Progress 01/10/20 to 12/31/24
Outputs
Target Audience:Target audiences include state and national regulatory officials, government agencies, extension educators, commercial growers, turf managers, landscape professionals, arborists, foresters, hobbyist gardeners, and homeowners in Connecticut. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?The results of plant disease surveys in the state have been used in training arborists (CT Tree Protective Association's Arboriculture 101 courses and CT Tree Warden Association's Tree Disease course), plant care professionals (Connecticut Nursery and Landscape Association and CT Organic Land Care Accreditation Course), gowers (CT Christmas Tree Association, Greenhouse Grower Association), and interested state residents or hobbyists (Bonsai Societies, Garden clubs, UConn Advance Master Gardener Training Programs, Experiment Station Association). Six seasonal assistants and interns who worked PDIO were trained for database management, sample handling, and disease diagnosis. How have the results been disseminated to communities of interest?Plant health issues were promptly addressed through the CAES website's "What's New" section. common DNA emerging plant disease problems and their management were discussed with stakeholders through the responses to 12,521 inquiries from byvisit, phone, mail, and email. the science-based information on plant health problems was also delivered to arborists, landscapers, growers, mastered gardeners, residences, and the public throughover 131 oral presentations, 20 exhibits, 10 media interviews, and numerous publications.Publishing Experiment Station fact sheets was an efficient way to deliver information, which was regularly updated and is available in hard copy and PDF files on the Station's website.The publications were disseminated to the public through visiting the office, mail, email, and public events, and through the Experiment Station website. What do you plan to do during the next reporting period to accomplish the goals?
Nothing Reported
Impacts
What was accomplished under these goals?
Beech leaf disease has been found in all counties in the State and remains the most concerned issue among plant health inquiries since the disease was first found in Connecticut in 2019. Boxwood blight remains a serious issue and concern in nurseries and landscapes especially during rainy and wet summer weather conditions. Severe epidemics of Septoria leaf spot of lilac, an emerging disease in the State resulted in browning of leaves and early defoliation in the late summer in 2023 and 2024. Phytophthora root rot was prevalent on woody and herbaceous ornamentals in nurseries and landscapes including Japanese yew, rhododendron, azalea, boxwood, cranberry, lilac, forsythia, arborvitae, inkberry, Fraser fir, butterfly bush. Gymnosporangium and other rust diseases were common on various host plants, such as apple, pear, quince, serviceberry, smoke bush, cedar, spruce, rose, blueberry, hollyhock, yellow elder, golden rod, raspberry, and turfgrass. In the wet spring weather conditions, Exobasidium leaf gall was problematic on azalea and rhododendron. Rhizosphaera needlecast and Stigmina needlecast remained two major foliar diseases on spruce trees. Rosellinia needle blight was first found in the State in 2023. Black knot disease was prevalent on cherry, plum, and peach trees. Volutella blight/canker was prevalent pachysandra, which was partially contributed by severe drought and heat stress. Alfalfa mosaic virus was another common disease of pachysandra. Botryosphaeria canker was found on rhododendron, maple, arborvitae, apple, viburnum, apple, juniper, cypress, holly, andromeda, hornbeam, rose, quince, oak, hawthorn, blueberry, and willow. Botryosphaeria leaf spot was found on rhododendron bushes from a nursery. Botrytis blight/canker was found on phlox, hosta, dianthus, impatiens, lavender, snapdragon, raspberry, peony, tulip, epimedium, lily, daffodil, geranium, helichrysum, marigold, rose, hemp, and basil. Powdery mildew was found on dogwood, Japanese maple, lilac, serviceberry, ninebark, peony, beebalm, and rudbeckia. Downy mildew was found on an Agastache, viburnum, phlox, aster, grape, basil, cucumber, and butterfly bush. Fusarium wilt of tomato became prevalent in vegetable gardens. Bacteria leaf spots were found on greenhouse-grown zinnia, salvia, chrysanthemum, and heuchera. Tobacco rattle virus was confirmed on a anemone sample, and hosta X virus was confirmed on a hosta plant. A lobelia plant collected from a nursery was positive to immunostrip test for cucumber mosaic virus. In a greenhouse, severe damages of powdery mildew of chervil and rhizoctonia blight of rutabaga were overserved. A severe outbreak of tomato spotted wilt virus on tomato plants was reported in a farm, which resulted from the infection of tomato seedlings in a greenhouse where mixed bedding plants grew. Bacterial leaf spot and Phytophthora blight remained major problems on peppers. Verticillium wilt was a major disease on eggplant. Fungal leaf spot and black knot disease was prevalent on cherry and plum trees. Rust, Fabraea leaf spot, and sooty blotch were problematic on pear trees. Cedar-apple rust, scab, fire blight, Marssonina blotch, and black rot were prevalent on apple trees. Peach leaf curl and peach brown rot were problematic in orchards. Black rot, powdery mildew, downy mildew, and anthracnose were commonly found on grapevines. Phytophthora root rot was confirmed in a cranberry field. Rust disease was found on raspberry and blueberry bushes. Armillaria root rot was diagnosed on a raspberry bush. Phomopsis canker, Botryosphaeria canker, and mummy berry were major diseases of blueberry. Orange rust was found on blackberry. Brown patch and dollar spot were prevalent in turfgrasses because of humid and warm weather conditions. Other diseases that were common in lawns are summer patch, red thread, pink patch, Pythium blight, anthracnose, Bipolaris leaf spot, powdery mildew, and rust. Slime mold and mushrooms in lawns raised residence's concerns.
Publications
- Type:
Other
Status:
Published
Year Published:
2023
Citation:
Yonghao Li. 2023. Dollar spot of turf grass in home lawn. https://portal.ct.gov/-/media/CAES/DOCUMENTS/Publications/Fact_Sheets/Plant_Pathology_and_Ecology/Dollar-Spot-of-Turfgrass-in-Home-Lawns.pdf.
- Type:
Other
Status:
Published
Year Published:
2023
Citation:
Yonghao Li. 2023. Gray snow mold of turf grass in home lawn. https://portal.ct.gov/-/media/CAES/DOCUMENTS/Publications/Fact_Sheets/Plant_Pathology_and_Ecology/Gray-Snow-Mold-of-Turfgrass-in-Home-Lawns.pdf.
- Type:
Other
Status:
Published
Year Published:
2024
Citation:
Yonghao Li. 2024. Edema. https://portal.ct.gov/-/media/CAES/DOCUMENTS/Publications/Fact_Sheets/Plant_Pathology_and_Ecology/Edema.pdf.
- Type:
Other
Status:
Published
Year Published:
2024
Citation:
Yonghao Li. 2024. Black root rot of ornamentals. https://portal.ct.gov/-/media/CAES/DOCUMENTS/Publications/Fact_Sheets/Plant_Pathology_and_Ecology/Black-Root-Rot-of-Ornamentals.pdf.
- Type:
Other
Status:
Published
Year Published:
2024
Citation:
Yonghao Li. Powdery Mildew of Strawberry. https://portal.ct.gov/-/media/caes/documents/publications/fact_sheets/plant_pathology_and_ecology/powdery-mildew-of-strawberry.pdf.
- Type:
Other
Status:
Published
Year Published:
2024
Citation:
Yonghao Li. Powdery Mildew of Woody Ornamentals. https://portal.ct.gov/-/media/caes/documents/publications/fact_sheets/plant_pathology_and_ecology/powdery-mildew-of-woody-ornamentals.pdf.
|
Progress 10/01/23 to 09/30/24
Outputs
Target Audience:Target audiences include state and national regulatory officials, government agencies, extension educators, commercial growers, turf managers, landscape professionals, arborists, foresters, hobbyist gardeners, and homeowners in Connecticut. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?The results of plant disease surveys in the state have been used in training arborists (CT Tree Protective Association's Arboriculture 101 course and CT Tree Warden Association's Tree Disease course), plant care professionals (e.g. Connecticut Nursery and Landscape Association and CT Organic Land Care Accreditation Course), growers (e.g., CT Christmas TreeAssociation, Greenhouse Grower Association), and interested state residents or hobbyists (e.g., Bonsai Societies, garden clubs, UConn Advance Master Gardener Training Program, Experiment Station Association). A seasonal assistant who worked in the PDIO was trained in database management, sample handling, and disease diagnosis. How have the results been disseminated to communities of interest?Plant health issues were promptly addressed through the CAES website's "What's New" section. Common and emerging plant disease problems and their management were discussed with stakeholders through the responses to 2,360 inquiries by visit, phone, mail, and email. The science-based information on plant health problems was also delivered to arborists, landscapers, growers, master gardeners, residences, and the public through over 29 oral presentations, seven exhibits, and four publications this year. Publishing Experiment Station fact sheets was an efficient way to deliver information, which was regularly u[updated and is available in hard copy and PDY files on the Station's website. The publications were disseminated to the public through visiting the office, mail, email, public events, and the ExperimentalStation website. What do you plan to do during the next reporting period to accomplish the goals?
Nothing Reported
Impacts
What was accomplished under these goals?
Rainy and wet weather conditions during the past and current growing seasons favored fungal, nematode, and bacterial diseases on trees, shrubs, herbaceous ornamentals, lawn grasses, fruits, and vegetables in 2024. Beech leaf disease, first confirmed in the state 2019, remained a serious threat to beech trees and raised a big concern to the homeowners and professionals. Distorted leaves and unopened dead leaf buds caused severe diebacks and decline of the infected beech trees. On eastern white pine, brown spot needle blight was prevalent and caused browning of old needles and early defoliation in June. Septoria leaf spot of lilac was favored by wet summer weather conditions last year and caused severe leaf blight and defoliation. A significantly increased number of black knot incidences and severe damage were found this year although this disease is common on cherry and plum trees. Boxwood blight was prevalent in landscapes andgardens, and the disease was also confirmed in a nursery. Excessive water and saturated soil from heavy thunderstorms favored Phytophthora root rot on woody ornamentals including rhododendron, lilac, boxwood, and Japanese yew. Rhizosphaera needlecast and Stigmina needlecast remained two major foliar diseases on spruce trees. Gymnosporangium rust diseases were found on various host plants, such as apple, pear, serviceberry, and cedar trees. Anthracnose diseases were found on many species of trees, such as sycamore, dogwood, hickory, maple, beech, hornbeam, and oak. Powdery mildew was diagnosed on leucothoe, beech, sycamore, maple, and serviceberry trees. Pythium root rot was found on ranunculus and hellebore in a farm and a nursery, respectively. Powdery mildew was prevalent on African violet, peony, phlox, petunia, beebalm, and rudbeckia. Botrytis blight was found on lavender, peony, tulip, snapdragon, hosta, epimedium, and lily. Rust diseases were found on hibiscus, iris, fern, and ornamental grasses. Daylily fungal leaf streak was confirmed in a daylily production field. Phytophthora root rot was problematic on lavender plants in nurseries and landscapes. Rhizoctonia damping-off was found on larkspur. Thielaviopsis root rot was found on helichrysum and nepeta. Hosta X virus was detected in hosta. Tobacco rattle virus was confirmed on epimedium and anemone. Bacteria leaf spots were found on greenhouse-grown hibiscus. Fungal leaf spot remained a common disease on iris, hosta, geranium, and rose campion. In a commercial greenhouse, powdery mildew and Rhizoctonia webbing blight caused severe damage on chervil and rutabaga, respectively. A severe outbreak of tomato spotted wilt virus on tomato plants was reported on a farm, which resulted from the infected tomato seedlings in a greenhouse where mixed bedding plants grew. Botrytis blight/canker was found on greenhouse-grown basil plants. Septoria leaf spot remained a major disease of garden tomatoes. Fusarium wilt of tomato became prevalent in vegetable gardens. Herbicide injury was problematic on tomatoes and cabbages in home gardens which were near lawns. Bacterial leaf spot and Phytophthora blight remained major problems on peppers. Powdery mildew, anthracnose, and bacterial angular leaf spot were major disease problems on cucurbits. Bacterial black rot was prevalent on cabbages and kales. Verticillium wilt was a major disease on eggplant. Fungal leaf spot and black knot disease was prevalent on cherry and plum trees. On ornamental pear trees, rust, Fabraea leaf spot, and sooty blotch were problematic. Cedar-apple rust, scab, fire blight, Marssonina blotch, and black rot were prevalent on apple trees. Peach leaf curl and peach brown rot were problematic in home-orchards this year. Black rot, powdery mildew, downy mildew, and anthracnose were commonly found on grapevines. Phytophthora root rot was confirmed in a cranberry field. Rust disease was found on raspberry and blueberry bushes. Armillaria root rot was diagnosed on a raspberry bush. Phomopsis canker, Botryosphaeria canker, and mummy berry were major diseases of blueberry. Orange rust was found on blackberry. Brown patch and dollar spot were prevalent in the summer 2024 because of humid and warm weather conditions. Other diseases that were common in lawns are summer patch, red thread, pink patch, Pythium blight, anthracnose, Bipolaris leaf spot, powdery mildew, and rust. Slime mold and mushrooms in lawns raised residence's concerns.
Publications
- Type:
Other
Status:
Published
Year Published:
2024
Citation:
Yonghao Li. 2024. Edema. https://portal.ct.gov/-/media/CAES/DOCUMENTS/Publications/Fact_Sheets/Plant_Pathology_and_Ecology/Edema.pdf.
- Type:
Other
Status:
Published
Year Published:
2024
Citation:
Yonghao Li. 2024. Black root rot of ornamentals. CAES Fact Sheet. https://portal.ct.gov/-/media/CAES/DOCUMENTS/Publications/Fact_Sheets/Plant_Pathology_and_Ecology/Black-Root-Rot-of-Ornamentals.pdf.
- Type:
Other
Status:
Published
Year Published:
2024
Citation:
Yonghao Li. 2024. Powdery Mildew of Strawberry. CAES Fact Sheet. https://portal.ct.gov/-/media/caes/documents/publications/fact_sheets/plant_pathology_and_ecology/powdery-mildew-of-strawberry.pdf.
- Type:
Other
Status:
Published
Year Published:
2024
Citation:
Yonghao Li. 2024. Powdery Mildew of Woody Ornamentals. CAES Fact Sheet. https://portal.ct.gov/-/media/caes/documents/publications/fact_sheets/plant_pathology_and_ecology/powdery-mildew-of-woody-ornamentals.pdf.
|
Progress 10/01/22 to 09/30/23
Outputs
Target Audience:Target audiences include state and national regulatory officials, government agencies, extension educators, commercial growers, turf managers, landscape professionals, arborists, foresters, hobbyist gardeners, and homeowners in Connecticut. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?The results of plant disease surveys in the state have been used in training arborists (CT Tree Protective Association's Arboriculture 101 course and CT Tree Warden Association's Tree Disease course), plant care professionals (e.g. Connecticut Nursery and Landscape Association and CT Organic Land Care Accreditation Course), growers (e.g., CT Christmas Tree Association, Greenhouse Grower Association), and interested state residents or hobbyists (e.g., garden clubs, UConn Advance Master Gardener Training Program, Experiment Station Association). A seasonal assistant who worked in the PDIO was trained for database management, sample handling, and disease diagnosis. How have the results been disseminated to communities of interest?Plant health issues were timely addressed through the 'What's New' section on the Station website. Common and emerging plant disease problems and their management were discussed with stakeholders through the responses to 3,649 inquiries from stakeholders by visit, phone, mail, and email. The science-based information on plant health problems was also delivered to arborists, landscapers, growers, master gardeners, residences, and the public through over 37 oral presentations, 5 exhibits, and numerous publications this year. Publishing Experiment Station fact sheets was an efficient way to deliver information, which was regularly updated and is available in hard copy and PDF files on the Station's website. The publications were disseminated to the public through visiting the office, mail, email, and public events, and through the Experiment Station website. What do you plan to do during the next reporting period to accomplish the goals?
Nothing Reported
Impacts
What was accomplished under these goals?
Beech leaf disease remains the most concerned issue among plant health inquiries because the disease has been distributed in all counties in Connecticut. Distorted leaves and unopened dead leaf buds caused severe diebacks and decline of the trees. Extreme cold temperatures on February 3-4, 2022 caused severe winter damage on bigleaf hydrangea in some areas, which resulted in failure to bloom. Late frost on May 18 resulted in severe freezing/frost damages on warm-season vegetable transplants, fruit trees, and woody ornamentals (newly opened leaves of Japanese maple and redbud trees). Cool and wet spring weather conditions were favored for some foliar diseases, such as Exobasidium leaf gall on azalea and rhododendron, Gymnosporangium rust diseases on various host plants, such as apple, pear, serviceberry, and cedar trees, anthracnose on dogwood, hickory, maple, beech, hornbeam, and oak. Rainy and wet summer weather conditions resulted in boxwood blight outbreak in the summer 2023. A severe outbreak of Septoria leaf spot of lilac resulted in browning of leaves and early defoliation in the late summer. Botryosphaeria leaf spot was found on rhododendron bushes from a nursery. Powdery mildew was found on dogwood, Japanese maple, lilac, serviceberry, ninebark, peony, beebalm, and rudbeckia. Rhizosphaera needlecast and Stigmina needlecast remained two major foliar diseases on spruce trees. Volutella blight/canker of pachysandra was prevalent, which was contributed from severe drought and heat stress in the summer 2022. Alfalfa mosaic virus was another common disease of pachysandra although the disease does not cause severe damage to the plants. A lobelia plant collected from a nursery was positive to immunostrip test for cucumber mosaic virus. Downy mildew was found on an Agastache plant and a phlox plant that were collected from nurseries. Phytophthora root rot was found on lavender and wild ginger in nurseries and landscapes. Botrytis blight/canker was found on phlox, hosta, dianthus, impatiens, and basil. Bacteria leaf spots were found on greenhouse-grown zinnia, salvia, chrysanthemum, and heuchera. A severe outbreak of tomato spotted wilt virus on tomato plants was reported in a farm, which was resulted from the infection of tomato seedlings in a greenhouse where mixed bedding plants grew. Fusarium wilt of tomato became prevalent in home vegetable gardens. Bacterial leaf spot and Phytophthora blight remained major problems on peppers. Verticillium wilt was a major disease on eggplant. Peach leaf curl was widely reported in home orchards in the early season. Black knot disease was prevalent on cherry, plum, and peach trees. On pear trees, rust and Fabraea leaf spot were problematic. Black rot, powdery mildew, downy mildew, and anthracnose were commonly found on grapevines. Rust disease was found on both leaves and stems of raspberry bushes. Phomopsis canker, Botryosphaeria canker, and mummy berry were major diseases of blueberry. Anthracnose crown rot was problematic in strawberry farms. Dollar spot was prevalent in the summer 2023 because of humid and warm weather conditions. Slime mold and mushrooms in lawns raised residence's concerns.?
Publications
- Type:
Other
Status:
Published
Year Published:
2023
Citation:
Yonghao Li. 2023. Botrytis Blight of Blueberry. CAES Fact Sheet. https://portal.ct.gov/-/media/CAES/PDIO/Fact-Sheets/Botrytis-Blight-of-Blueberry.pdf
- Type:
Other
Status:
Published
Year Published:
2023
Citation:
Yonghao Li. 2023. Phytophthora Root Rot of Woody Ornamentals. CAES Fact Sheet. https://portal.ct.gov/-/media/CAES/PDIO/Fact-Sheets/Phytophthora-Root-Rot-of-Woody-Ornamentals.pdf
- Type:
Other
Status:
Published
Year Published:
2023
Citation:
Yonghao Li. 2023. Anthracnose of Strawberry. CAES Fact Sheet. https://portal.ct.gov/-/media/CAES/DOCUMENTS/Publications/Fact_Sheets/Plant_Pathology_and_Ecology/Anthracnose-of-Strawberry.pdf
- Type:
Other
Status:
Published
Year Published:
2023
Citation:
Yonghao Li. 2023. Pine Wilt. CAES Fact Sheet. https://portal.ct.gov/-/media/CAES/DOCUMENTS/Publications/Fact_Sheets/Plant_Pathology_and_Ecology/Pine-Wilt.pdf
|
Progress 10/01/21 to 09/30/22
Outputs
Target Audience:Target audiences include state and national regulatory officials, extension educators, commercial growers, turf managers, landscape professionals, arborists, foresters, hobbyist gardeners, and homeowners in Connecticut. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?The results of plant disease surveys in the state have been used in training arborists (CT Tree Protective Association's Arboriculture 101 course and CT Tree Warden Association's Tree Disease course), plant care professionals (e.g. Connecticut Nursery and Landscape Association and CT Organic Land Care Accreditation Course), growers (e.g., CT Christmas Tree Association, Greenhouse Grower Association), and interested state residents or hobbyists (e.g., garden clubs, UConn Advance Master Gardener Training Program, Experiment Station Association). A seasonal assistant who worked in the PDIO was trained for database management, sample handling, and disease diagnosis. How have the results been disseminated to communities of interest?Plant health issues were timely addressed through the 'What's New' section on the Station website. Common and emerging plant disease problems and their management were discussed with stakeholders through the responses to 3,535 inquiries from stakeholders by visit, phone, mail, and email. The science-based information on plant health problems was also delivered to arborists, landscapers, growers, master gardeners, residences, and the public through over 24 oral presentations, 1 exhibit, and numerous publications this year. Publishing Experiment Station fact sheets was an efficient way to deliver information, which was regularly updated and is available in hard copy and PDF files on the Station's website. The publications were disseminated to the public through visiting the office, mail, email, and public events, and through the Experiment Station website. What do you plan to do during the next reporting period to accomplish the goals?
Nothing Reported
Impacts
What was accomplished under these goals?
Volutella blight, a common fungal disease of pachysandra, caused severe damages in 2022 because of heat and drought stress from the extreme summer weather. The death and declining of established arborvitae trees and rhododendron bushes were widely reported, which might be contributed by prolonged heat and drought stress during the summer and bad root health. A widespread beech leaf disease and more severe damages on varieties of beech species pose a threat to beech trees in both landscapes and forests. Besides distorted leaves and dark-green bends, unopened dead leaf buds resulted from beech leaf disease were observed on infected trees. Boxwood blight remains a major concern on boxwoods in landscapes and nurseries. Other common problems on boxwood were winter injury, Volutella blight/canker, and Macrophoma leaf spot. Alternaria leaf spot resulted in severe early defoliation on privet in early summer. Botryosphaeria canker was prevalent on oak, beech, cedar, hornbeam, and rhododendron. Trellis rust was problematic on pear trees and cause severe damages on certain varieties. Powdery mildew was found on dogwood, Japanese maple, lilac, serviceberry, and ninebark. An increased trend in Dutch elm disease was observed even on some resistant varieties. Rhizosphaera needlecast and Stigmina needlecast remained two major foliar diseases on spruce including blue spruce and Norway spruce. Fungal leaf spot remained a major disease on mountain laurel. Xanthomonas blight of geranium was detected in many greenhouses in the spring 2022 because of infected plugs in shipments from suppliers. Several dahlia plants from landscapes and propagation rooms were tested positive for Potyviruses. Southern blight caused by Sclerotium rolfsii was prevalent on hosta. Septoria leaf spot remained a major disease in garden- and field-grown tomatoes. Fusarium wilt of tomato became prevalent in vegetable gardens. Black knot was prevalent on cherry, plum, and peach trees. Brown patch, summer patch, red thread, pink patch, dollar spot, Pythium blight, anthracnose, Bipolaris leaf spot, powdery mildew, and rust were common lawn grass diseases.
Publications
- Type:
Websites
Status:
Published
Year Published:
2022
Citation:
e-Gro Alert 11 (19):1-3. http://www.e-gro.org/pdf/2020-11-19.pdf
|
Progress 10/01/20 to 09/30/21
Outputs
Target Audience:Target audiences include state and national regulatory officials, extension educators, commercial growers, turf managers, landscape professionals, arborists, foresters, hobbyist gardeners, and homeowners in Connecticut. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?The results of plant disease surveys in the state have been used in training arborists (CT Tree Protective Association's Arboriculture 101 course and Tree Warden School organized by the Tree Wardens' Association of CT), plant care professionals (e.g. Connecticut Nursery and Landscape Association and CT Organic Land Care Accreditation Course), growers (e.g., CT Christmas Tree Association, Greenhouse Grower Association), and interested state residents or hobbyists (e.g., garden clubs, UConn Advance Master Gardener Training Program). A seasonal assistant who worked in the PDIO was trained for database management, sample handling, and disease diagnosis. How have the results been disseminated to communities of interest?Plant health issues were timely addressed through the 'What's New' section on the Station website. Common and emerging plant disease problems and their management were discussed with stakeholders through the responses to 3,325 inquiries from stakeholders by visit, phone, mail, and email. The science-based information on plant health problems was also delivered to arborists, landscapers, growers, master gardeners, residences, and the public through over 28 oral presentations, 3 exhibits, and numerous publications this year. Publishing Experiment Station fact sheets was an efficient way to deliver information, which was regularly updated and is available in hard copy and PDF files on the Station's website. The publications were disseminated to the public through visiting the office, mail, email, and public events, and also through the Experiment Station website.? What do you plan to do during the next reporting period to accomplish the goals?
Nothing Reported
Impacts
What was accomplished under these goals?
Since beech leaf disease was first detected in Connecticut in 2019, it has been found in all counties of the State. Compared to the last two years, more severe damages with distorted and leathery leaves were observed on infected trees in the spring of 2021. Anthracnose was also contributed to necroses of leaves on affected beech trees. Numerous reports about the death of arborvitae trees were received in the fall of 2020 and in the spring of 2021, which was contributed by drought and heat stress in summer 2020. Phytophthora root rot and poor root conditions also contributed to declining of arborvitaes. Pestalotiopsis needle blight was prevalent in arborvitae, which might be associated with winter injury and environmental stress on the trees. Boxwood blight was found occasionally in landscapes and nurseries. Colletotrichum dieback was first detected in Connecticut in 2020. Alternaria leaf spot resulted in severe early defoliation on privet in early summer. Rhizosphaera needlecast and Stigmina needlecast remained two major foliar diseases on spruce including blue spruce and Norway spruce. Rust diseases were found on goldenrod in flower gardens. Fusarium wilt became prevalent tomato both in greenhouses and home gardens. Septoria leaf spot, blossom-end rot, anthracnose, and bacterial leaf spot remained major diseases in the garden- and field-grown tomatoes. On peppers, bacterial leaf spot and Phytophthora blight were problematic. Bacterial black rot and Alternaria leaf spot were found on broccoli and brussels sprouts. Powdery mildew damages were found on hemp. Plum pocket disease was found in a home orchard. Black knot was prevalent on cherry, peach, and plum trees and caused significant diebacks. On pear trees, rust and Fabraea leaf spot were found. Leaf curl, scab, and brown rot continued to be major diseases on peach. Black rot, powdery mildew, downy mildew, and anthracnose were commonly found on grapevines. The suddenonset of cold temperatures in early November resulted in chilling injury on turfgrasses. Snow mold resulted in the browning of lawn grasses in spring 2021.
Publications
- Type:
Other
Status:
Published
Year Published:
2020
Citation:
Li, Y. H. Brown Rot of Stone Fruit. CAES Fact Sheet https://portal.ct.gov/-/media/CAES/DOCUMENTS/Publications/Fact_Sheets/Plant_Pathology_and_Ecology/2020/Brown-Rot-of-Stone-Fruit.pdf.
- Type:
Other
Status:
Published
Year Published:
2020
Citation:
Li, Y. H. Pythium Blight of Turfgrasses. CAES Fact Sheet https://portal.ct.gov/-/media/CAES/DOCUMENTS/Publications/Fact_Sheets/Plant_Pathology_and_Ecology/2020/Pythium-Blight-of-Turfgrasses.pdf.
- Type:
Other
Status:
Published
Year Published:
2021
Citation:
Li, Yonghao, and Robert E. Marra. 2021. Beech Leaf Disease Updates 2021. CAES Fact Sheet. https://portal.ct.gov/-/media/CAES/DOCUMENTS/Publications/Fact_Sheets/Plant_Pathology_and_Ecology/Beech-Leaf-Disease---Updates-2021.pdf.
- Type:
Other
Status:
Published
Year Published:
2021
Citation:
Li, Y. H. Dutch Elm Disease. CAES Fact Sheet https://portal.ct.gov/-/media/CAES/DOCUMENTS/Publications/Fact_Sheets/Plant_Pathology_and_Ecology/Dutch-Elm-Disease.pdf.
- Type:
Other
Status:
Published
Year Published:
2021
Citation:
Li, Y. H. Fusarium Wilt of Tomato. CAES Fact Sheet https://portal.ct.gov/-/media/CAES/DOCUMENTS/Publications/Fact_Sheets/Plant_Pathology_and_Ecology/Fusarium-Wilt-of-Tomato.pdf.
|
Progress 01/10/20 to 09/30/20
Outputs
Target Audience:Target audiences include state and national regulatory officials, extension educators, commercial growers, turf managers, landscape professionals, arborists, foresters, hobbyist gardeners, and homeowners in Connecticut. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?The results of plant disease surveys in the state have been used in training arborists (CT Tree Protective Association's Arboriculture 101 course), plant care professionals (e.g. Connecticut Nursery and Landscape Association and CT Organic Land Care Accreditation Course), growers (e.g., CT Christmas Tree Association, Greenhouse Grower Association), and interested state residents or hobbyists (e.g., garden clubs, UConn Advance Master Gardener Training Program, Experiment Station Association). A seasonal assistant who worked in the PDIO was trained for database management, sample handling, and disease diagnosis. How have the results been disseminated to communities of interest?Plant health issues were timely addressed through the 'What's New' section on the Station website. Common and emerging plant disease problems and their management were discussed with stakeholders through the responses to 3,187 inquiries from stakeholders by visit, phone, mail, and email. The science-based information on plant health problems was also delivered to arborists, landscapers, growers, master gardeners, residences, and the public through over 13 oral presentations, 4 exhibits, and numerous publications this year. Publishing Experiment Station fact sheets was an efficient way to deliver information, which was regularly updated and is available in hard copy and PDF files on the Station's website. The publications were disseminated to the public through visiting the office, mail, email, and public events, and also through the Experiment Station website. What do you plan to do during the next reporting period to accomplish the goals?
Nothing Reported
Impacts
What was accomplished under these goals?
A longer cool and wet spring weather conditions resulted in severe epidemics of fungal foliar diseases on woody ornamental and fruit trees including oak anthracnose, sycamore anthracnose, dogwood anthracnose, hornbeam anthracnose, fungal leaf spot of cherry, and apple scab, which caused significant distorted new growth and premature defoliation. Significant defoliation caused by anthracnose was noticed on red maple trees in June. Beech leaf disease was detected early (late May) in New Haven County this year. Boxwood dieback caused by Colletotrichum theobromicola was detected on a sample, which is the first report of the disease in Connecticut. The dry and hot summer weather resulted in severe heat and drought stress on nonmetals and vegetables such as a large scale of browning of needles and diebacks of arborvitae. a sustained period of cold to freezing daily low temperatures occurred from Oct. 30 to Nov. 3 after warm October resulted in the widespread chilling injury of turfgrasses. Anthracnose and summer patch of turfgrasses were prevalent in the summer. Botryosphaeria leaf spot was identified on hornbeam. Severe powdery mildew damages were observed on Japanese maple in the summer. Epidemics of Alternaria leaf spot in the spring resulted in severe early defoliation of privet. Gnomonia leaf spot of shagbark hickory was first identified in Connecticut. Septoria leaf spot and early blight remained problematic on tomato plants.
Publications
- Type:
Other
Status:
Published
Year Published:
2020
Citation:
Li, Y. H. 2020. Marssonina Blotch of Apple. CAES Fact Sheet. https://portal.ct.gov/-/media/CAES/DOCUMENTS/Publications/Fact_Sheets/Plant_Pathology_and_Ecology/2019/Marssonina-Blotch-of-Apple.pdf?la=en
- Type:
Other
Status:
Published
Year Published:
2020
Citation:
Li, Y. H. 2020. Gray Mold of Tomato. CAES Fact Sheet https://portal.ct.gov/-/media/CAES/DOCUMENTS/Publications/Fact_Sheets/Plant_Pathology_and_Ecology/2020/Gray-Mold-of-Tomato-(1).pdf.
- Type:
Other
Status:
Published
Year Published:
2020
Citation:
Li, Y. H. 2020. Boxwood Blight, CAES Fact Sheet https://portal.ct.gov/-/media/CAES/DOCUMENTS/Publications/Fact_Sheets/Plant_Pathology_and_Ecology/2020/Boxwood-Blight-(1).pdf?la=en
- Type:
Other
Status:
Published
Year Published:
2020
Citation:
Li, Y. H. 2020. Black Rot of Grape. CAES Fact Sheet https://portal.ct.gov/-/media/CAES/DOCUMENTS/Publications/Fact_Sheets/Plant_Pathology_and_Ecology/2020/Black-Rot-of-Grape-(1).pdf.
- Type:
Other
Status:
Awaiting Publication
Year Published:
2020
Citation:
Li, Y. H. 2020. Brown Rot of Stone Fruit. CAES Fact Sheet
- Type:
Other
Status:
Awaiting Publication
Year Published:
2020
Citation:
Li, Y. H. 2020. Pythium Blight of Turfgrasses. CAES Fact Sheet
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