Progress 10/03/16 to 10/03/21
Outputs
Target Audience:The target audience reached during this project included stakeholders (growers, production managers, farm operators, and industry personnel), researchers, extension personnel, students, interns, and the general public. The data from ongoing studies was presented at both grower and scientific seminars. These talked included the state-wide Florida Citrus Show and Citrus Expo, extension seminars, and the annual Soil Science Society of America meeting. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?Training and mentorship of a postdoctoral research associate, two MS students, and two PhD students has been provided by this project. How have the results been disseminated to communities of interest?Results from experiments conducted during this project were presented to citrus growers, industry, and extension personnel at the Citrus Expo (Ft. Myers, FL) and extension seminars for Polk County and Southwest Florida. In addition, results from these experiments were presented to UF Master Gardner's in Broward County and used for Florida Certified Crop Advisor certification sessions.? What do you plan to do during the next reporting period to accomplish the goals?
Nothing Reported
Impacts
What was accomplished under these goals?
Impact: Results from greenhouse and field trials during this project have found that commercially available soil amendments have little or no impact on the soil microbial community composition of citrus. There also appears to be little impact of these products on tree health or production. However, studies conducted during this project have found that native microbial consortia, biological soil crusts, have significant impacts on the soil microbial community and nitrogen cycling in citrus orchards. These naturally occurring groups of microorganisms do appear to be contributing nitrogen to the soil profile for citrus. Preliminary results of ongoing study examining the influence of compost on the soil microbial community of citrus indicates significant changes to specific soil microbial taxa which may be linked to changes in root growth. Microbial sequencing data from studies conducted during this project have been used to determine the relationship between core and functional microbiomes of different citrus rootstocks, in addition to other crops, which provided valuable insight into how future studies should examine functional components of the soil microbiome. Objective 1: Field and greenhouse trials examining the influence of biological soil crusts, naturally occurring consortia of bacteria, fungi, archaea, lichens, and mosses, on citrus trees have been completed by two PhD graduate students. Results from two field studies have been published in peer-reviewed journals, and a third has been submitted for publication. Results from a field trial examining the impact of commercially available soil amendments on the soil microbial community of citrus was published in the peer-reviewed journal Trees. This study found that amendments overall had little or no impact on the soil microbial community composition, and no impact on tree health or production. However, there were some changes to specific microbial taxa with amendments and root macro- and micronutrient concentrations with the application of fulvic acids. Objective 2: A multi-year field trial in a commercial citrus orchard to examine the influence of compost amendments on the soil microbial community and tree health is currently in progress. This field trial includes multiple citrus rootstocks. Preliminary results indicate rootstock genotype does impact the response of the rhizosphere microbial community to compost addition.
Publications
- Type:
Journal Articles
Status:
Published
Year Published:
2021
Citation:
Toole DR, Zhao J, Martens-Habbena W, Strauss SL. (2021) A comparison of bacterial functional prediction tools in Southwest Florida soils. Applied Soil Ecology 168: 104129
- Type:
Journal Articles
Status:
Published
Year Published:
2021
Citation:
Castellano-Hinojosa A, Myering B, Nuzzo A, Strauss SL, Albrecht U (2021) Effect of plant biostimulants on root and plant health and the rhizosphere microbiome of citrus trees in Huanglongbing-endemic conditions. Trees 35: 1525-1539
- Type:
Journal Articles
Status:
Published
Year Published:
2021
Citation:
Castellano-Hinojosa A, Strauss SL (2021) Insights into the taxonomic and functional characterization of agricultural crop core rhizobiomes and their potential microbial drivers. Scientific Reports 11:10068; doi: 10.1038/s41598-021-89569-7
- Type:
Journal Articles
Status:
Published
Year Published:
2021
Citation:
Nevins C, Inglett P, Strauss SL (2021) Biological soil crusts vertically structure the subsurface microbiome in a sandy agroecosystem. Plant and Soil 462: 311-329
- Type:
Journal Articles
Status:
Published
Year Published:
2021
Citation:
Castellano-Hinojosa A, Martens-Habbena W, Smyth AR, Kadyampakeni D, Strauss SL (2022) Effect of cover crops on soil properties, abundance of N-cycling genes, and greenhouse emissions in citrus agroecosystems. Applied Soil Ecology 172: 104241, doi: 10.1016/j.apsoil.2021.104341
- Type:
Journal Articles
Status:
Under Review
Year Published:
2022
Citation:
Nevins C, Inglett P, Strauss SL (2022) Seasonality drives microbiome composition and nitrogen cycling in soil below biocrusts. Soil Biology and Biochemistry
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Progress 10/01/19 to 09/30/20
Outputs
Target Audience:The target audience reached during this period included stakeholders (growers, production managers, farm operators, and industry personnel), researchers, extension personnel, students, interns, and the general public. The data from ongoing studies was presented at both grower and scientific seminars. These talked included the state-wide Florida Citrus Show and Citrus Expo, extension seminars, and the annual Soil Science Society of America meeting. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?Training and mentorship of a postdoctoral research associate and two MS students has been provided by this project. How have the results been disseminated to communities of interest?Preliminary data from experiments were presented to citrus growers, industry, and extension personnel at the Citrus Show (Ft. Pierce, FL), a citrus-focused podcast (All in for Citrus, produced by UF/IFAS), and extension seminars for Polk County citrus growers. In addition, results from these experiments have been presented to UF Master Gardner's in Broward County, and used for Florida Certified Crop Advisor certification sessions. Data was also presented at the Soil Science Society of America annual meeting. What do you plan to do during the next reporting period to accomplish the goals?
Nothing Reported
Impacts
What was accomplished under these goals?
Impact: Results from a field trial examining the impact of commercially available soil amendments on the soil microbial community of citrus was recently submitted for publication in the journal Trees. A multi-year field trial in a commercial citrus grove is currently underway examining the influence of compost amendments on the soil microbial community and tree health. Objective 1: Greenhouse trials examined the influence of amending soils with biological soil crusts, naturally occurring consortia of bacteria, fungi, archaea, lichens, and moss, on citrus seedlings. These trials have been completed by a PhD graduate student and results are currently being prepared for publication. Studies continue to examine the interaction between rootstock propagation, soil type, and the soil microbial community composition. Objective 2: The results from a multi-year project to examine the impact of soil amendments on microbial communities of mature commercial citrus soils have been submitted for publication. In addition, a publication examining the relationship between core and functional microbiomes of different citrus rootstocks, in addition to other crops, has been submitted for publication. A field project examining the interactions between compost, rootstock genotype, and soil microbial communities of newly planted trees recently began the second year. Data from year 1 of the trial are still being analyzed.
Publications
- Type:
Journal Articles
Status:
Published
Year Published:
2020
Citation:
Nuzzo A, Satpute A, Albrecht U, Strauss SL (2020) Impact of soil microbial amendments on tomato rhizosphere microbiome and plant growth in field soil. Microbial Ecology 80: 398-409
- Type:
Journal Articles
Status:
Submitted
Year Published:
2020
Citation:
Castellano-Hinojosa A, Strauss SL (2020) Insights into the taxonomic and functional characterization of agricultural crop core rhizobiomes and their potential microbial drivers. Biology and Fertility of Soils
- Type:
Journal Articles
Status:
Submitted
Year Published:
2020
Citation:
Castellano-Hinojosa A, Myering B, Nuzzo A, Strauss SL, Albrecht U (2020) Effect of plant biostimulants on root and plant health and the rhizosphere microbiome of citrus trees in Huanglongbing-endemic conditions. Trees
- Type:
Journal Articles
Status:
Submitted
Year Published:
2020
Citation:
Toole DR, Zhao J, Martens-Habbena W, Strauss SL. (2020) A comparison of bacterial functional prediction tools in Southwest Florida soils. Applied Soil Ecology
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Progress 10/01/18 to 09/30/19
Outputs
Target Audience:The target audience reached during this period included stakeholders (growers, production managers, farm operators, and industry personnel), researchers, extension personnel, students, interns, and the general public. The data from ongoing studies was presented at both grower and scientific seminars. These included talks at the state-wide Florida Citrus Show and a Citrus Soil Health Field Day, a citrus podcast produced by UF/IFAS, and presentations at the annual Soil Science Society of America meeting. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?
Nothing Reported
How have the results been disseminated to communities of interest?Preliminary data from experiments were presented to citrus growers, industry, and extension personnel at the Citrus Show (Ft. Pierce, FL), the Citrus Soil Health field day (Howie-in-the-Hills, FL), a citrus-focused podcast (All in for Citrus, produced by UF/IFAS), and seminars at the UF/IFAS Southwest Florida Research and Education Center. Data was presented at the Florida State Horticulture Society meeting, and the annual Soil Science Society of America meeting. What do you plan to do during the next reporting period to accomplish the goals?
Nothing Reported
Impacts
What was accomplished under these goals?
Impact: One field trial examining the impact of soil amendments on the microbial community of citrus soils was recently completed, and the last data collected is currently being analyzed. Preliminary data was presesnted to citrus growers and other industry personnel at the Florida Citrus Show in Ft. Pierce, FL and a Citrus Soil Health Field Day. Objective 1: Greenhouse trials, in collaboration with local citrus nurseries, looked at the impact of different soil types on citrus rhizosphere microbial community composition. A Master's graduate student conducted this research, and it was presented at the Florida State Horticulture Society meeting. This work has also been accepted for publication in the Proceedings of the Florida State Horticulture Society. Studies continue to look at interaction between rootstock propagation, soil type, and the soil microbial community composition. Objective 2: Field experiments from a multi-year project to examine the impact of soil amendments on the soil microbial communities of mature commercial citrus have recently been completed. The last data points are being analyzed, and publications are in preparation. A new field project was recently started to look at the interaction between compost, rootstock genotype, and the soil microbial community of newly planted citrus.
Publications
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Progress 10/01/17 to 09/30/18
Outputs
Target Audience:The target audience reached during this period included stakeholders (growers, production managers, farm operators, and industry personnel), researchers, extension personnel, students, interns, and the general public. Data from ongoing studies was presented at both grower and scientific seminars. These included talks at the Citrus Show and Citrus Expo, two state-wide citrus industry meetings, as well as seminars at the UF/IFAS Tropical REC and Everglades REC, and a presentation at the Penn State Phytobiomes Symposium. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?
Nothing Reported
How have the results been disseminated to communities of interest?Preliminary data from experiments were presented to citrus growers and industry and extension personnelat the Citrus Expo (August, Ft. Myers, FL), and the Citrus Show (January, Ft. Pierce, FL). Preliminary data was also presented at research conferences, including the Penn State Phytobiomes Symposium in June. What do you plan to do during the next reporting period to accomplish the goals?
Nothing Reported
Impacts
What was accomplished under these goals?
Impact: Field experiments to examine the impact of soil amendemnts on the microbial community of citrus soils were continued in multiple groves. Preliminary data was presented to citrs growers and other industry personnel at two large citrus industry conferences: the Citrus Show (Ft. Pierce, FL - January) and the Citrus Show (Ft. Myers, FL - August). Objective 1: Greenhouse trials in collaboration with local citrus nurseries were begun to look at the impact of different soil types on ctirus rhizosphere microbial community composition. A graduate student is assisting with this project. In addition, an additionalgreenhouse experiment was performed as an initial screening/testing procedure on the efficacy of additional soil amedment products to improve plant growth and change the soil microbial community. A postdoctoral research associate assisted with this project. Both trials will conclude in the next several months. Objective 2: Experiments continued in the field to asess the impact of soil amendments on the soil microbial communities of citrus. Data has been collected from field trials examining the impact of amendments on mature citrus in two different commercial groves. The first set of data has been collected from anadditional trial examining the interaction of propagation method, rootstock genotype, and soil type. Data is still being analyzed and collected for both trials, as these are multi-year projects.
Publications
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Progress 10/03/16 to 09/30/17
Outputs
Target Audience:The target audience reached during this period included industry stakeholders (growers, production managers, farm operators, industry personnel), researchers, extension personnel, students, interns, and the general public. Data from ongoing studies was presented at both grower seminars and scientific conferences. These included a talk for citrus growers on July 26 at the UF/IFAS Southwest Florida REC and an oral presentation at the 2017 American Society for Horticultural Sciences in September. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?
Nothing Reported
How have the results been disseminated to communities of interest?A seminar in collaboration with the plant physiologist was organized and held for local citrus growers in July 2017. This seminar provided information on the current knowledge of soil microbial amendments in agriculture and citrus, and preliminary data from greenhouse trials. Posters with information on the ongoing experiments were also presented at the local citrus show in August. What do you plan to do during the next reporting period to accomplish the goals?
Nothing Reported
Impacts
What was accomplished under these goals?
Impact: In the first year of this project, experiments were started to begin the examination of soil amendments in citrus. A seminar was organized and held for over 60 local citrus growers, where information on our current knowledge of soil microbial amendments and citrus was presented. Objective 1: Examine the effect of soil amendments on citrus seedlings and different citrus propagation methods under greenhouse conditions. These initial trials will be used to screen different amendments for those that have the greatest effect on the overall soil bacterial and fungal diversity and plant growth (including root growth). Trials were begun in collaboration with local citrus nurseries and tissue culture companies. A graduate student was recruited for start in Fall 2017 to work on this project. Preliminary data has been collected for several citrus rootstocks. Plans are being made for the next phase of greenhouse trials. Objective 2: Examine the impact of soil amendments on the soil microbial community and functional groups of non-affected and HLB-affected citrus in relation to soil type, rootstock, and tree age. Working with a plant physiologist, this data will be correlated with the impact of these amendments on the tree health and productivity. Together, this will provide information on whether changes to the soil microbial community, if they occur, directly impacts the health and productivity of citrus. Experiments were begun both in the greenhouse and in field trials to assess the impact of soil amendments on the soil microbial community of citrus. These trials involve four different rootstocks, multiple tree ages, and trees under different management practices. Data has been collected for two time points: prior to treatment and six months after the first treatment application. Data is still being analyzed and collected, as this is a multi-year project.
Publications
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