Progress 10/01/07 to 06/10/11
Outputs
OUTPUTS: Field expereiment was repeated at the George Washington Carver Agricultural Research Farm in Jefferson City, Missouri to investigate the effects of soil applied nitrogen fertilizer and irrigation on the growth, development and quality of four varieties of sweet potato(Ipomoea batatas). Field data collected included rainfall, air and soil temperature, relative humidity, soil moisture content,fresh vine weight, percent N in sweet potato root and leaf tissue, and yield. PARTICIPANTS: Not relevant to this project. TARGET AUDIENCES: Not relevant to this project. PROJECT MODIFICATIONS: Not relevant to this project.
Impacts
Increasing the rate of applied nitrogen (N) significantly decreased the number of one size roots, but did not significantly decreas the yield of number one size roots. Fresh vine weight was significantly increased by increasing rates of applied N (Urea) but not dried vine weight. Increasing the rate of N from 0 lb/ac to 90 lb/ac significantly increased the percent N in sweet potato root and leaf tissue. Increasing the rate of applied N did not increase the average marketable root yield. Irrigation had a significant effect on the yield of number one and jumbo size roots, fresh yield of fiberous roots and vines, percent leaf nitrogen, and total marketable root yield. The variety "Georgia Jet", had significantly higher yields of number one and jumbo size roots and marketable yields than "Centennial", "Bunch", and "Beauregard".
Publications
- No publications reported this period
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Progress 10/01/09 to 09/30/10
Outputs
OUTPUTS: Fields plots were established at the George Washington Carver Agricultural Research Farm in Jefferson City, Missouri to investigate the effects of soil applied nitrogen fertilizer and irrigation on the growth, development and quality of four varieties of sweet potato(Ipomoea batatas); and to evaluate the performance of two watermelon (Citrullus lanatus) cultivars under two types of row-cover. This report summarizes results from data, not reported in 2009, collected in 2008 on the performance of two watermelon cultivars under two types of row-cover. Field data collected included rainfall, air and soil temperature, relative humidity, and soil moisture. Two watermelon cultivars (Black Diamond and Crimson Sweet) were direct-seeded on raised beds under two different row-covers (slitted plastic row-cover and 50None-waven Polypropylene Fabric row-cover) and on a traditional direct-seeded raised bed in three replications on May 27, 2008. Germination data were recorded up until the removal of the row covers. The watermelons were harvested on August 18 and 29, 2008. At harvest, the watermelons were counted and weighed individually. PARTICIPANTS: Not relevant to this project. TARGET AUDIENCES: Nothing significant to report during this reporting period. PROJECT MODIFICATIONS: Nothing significant to report during this reporting period.
Impacts
The 50None-waven Polypropylene Fabric row-cover significantly increased the number of watermelons (Citrullus lanatus)produced. The slitted plastic row-cover did not increase the number of watermelons produced in 2008. However, neither row-cover type increased the total watermelon yield. Although the 50None-waven Polypropylene Fabric type increased the number of watermelons produced, it did not significanlty increase the average total yield of watermelons. The number of watermelons produced, the total yield and the average yield produced per watermelon did not vary significantly between the two varieties. The variey, Black Diamond had a significantly higher germination rate than Crimson Sweet. Watermelons seeded under the 50None-waven Polypropylene row-cover had higher germination percentages than those seeded under slitted plastic or in traditional seeded rows but not significantly so. Significantly less watermelons were harvested during the earliest harvest date that the latest date; however, the average weight per watermelon did not vary between harvest dates. Data have been collected for the same study in 2009 and 2010. This data will be summarized and evaluated in the final- project report. St. Louis and Kansas City offers good market opportunity for sweet potato producers in Missouri. With improved management and cultural practices, it is possible for Missouri farmers to increase their income using high quality sweet potatoes and water melons. This study will have potential implications for promoting improved diets and health.
Publications
- No publications reported this period
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Progress 10/01/08 to 09/30/09
Outputs
OUTPUTS: Field plots were established at the George Washington Carver Agricultural Research Farm in Jefferson City, MO in 2008 to investigate the effects of soil applied nitrogen fertilizer and irrigation on the growth, development and quality of four varieties of sweet potato; and to evaluate the performance of two watermelon cultivars under two types of row-cover. Field samples were collected every 30 days up until 120 days of growth. This report summarizes results based on 120 days of growth. Increasing the rate of applied nitrogen (N) significantly decreased the number of one size roots, but did not significantly decreased the yield of number one size roots. Fresh vine weight was significantly increased by increasing rates of applied N (Urea) but not dried vine weight. Increasing the rate of N from 0 lb/ac to 90 lb/ac significantly increased the percent N in sweet potato root and leaf tissue. Increasing the rate of applied N did not increase the average marketable root yield. Irrigation had a significant effect on the yield of number one and jumbo size roots, fresh yield of fiberous roots and vines, percent leaf nitrogen, and total marketable root yield. The variety "Georgia Jet", had significantly higher yields of number one and jumbo size roots and marketable yields than "Centennial", "Bunch", and "Beauregard". PARTICIPANTS: Not relevant to this project. TARGET AUDIENCES: Nothing significant to report during this reporting period. PROJECT MODIFICATIONS: Nothing significant to report during this reporting period.
Impacts
St. Louis and Kansas City offers good market opportunity for sweet potao (Ipomea batatas) producers in Missouri. With improved management and cultural practices, it is possible for Missouri farmers to increase their income using high quality sweet potatoes and watermelons. This study will have potential implications for promoting improved diets and health.
Publications
- No publications reported this period
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Progress 10/01/07 to 09/30/08
Outputs
OUTPUTS: Field plots were established at the George Washington Carver Agricultural Reseach Farm in Jefferson City, Missouri to investigate the effects of soil applied nitrogen fertilizer and irrigation on the growth,development and quality of four varieties of sweet potato; and to evaluate the performance of two watermelon cultivars under two types of row-cover. The treatments included four rates of urea fertilizer (0,20,40 and 60 pounds per acre); six irrigation periods (30 days each);four harvest intervals (30 days)and four sweet potato varieties. Treatments were arranged in a completely randomized split-split-split plot design. Sweet potato slips were transplanted to field plots on May 15, 2008 and harvesting was initiate on June 16, 2008. Vines and roots were harvested at 30-day intervals until plants reached 120-days of growth. Field data collected included rainfall, air and soil-temperature, relatived humidity, and soil moisture. Root and vine fresh and dry weights, percent leaf-nitrogen,and root beta-carotene content are being recorded in the laboratory. Two watermelon (Citrullus lanatus) cultivars were direct-seeded on raised beds under two different row-covers (slitted plastic row-cover and 50None-waven Polypropylene Fabric row-cover) in three replications on May 27, 2008. The watermelons were harvested on August 18 and 29, 2008. At harvest, the watermelons were counted and weighed individually. Data are being prepared for statistical analyses. PARTICIPANTS: Not relevant to this project. TARGET AUDIENCES: Nothing significant to report during this reporting period. PROJECT MODIFICATIONS: Nothing significant to report during this reporting period.
Impacts
St. Louis offers good market opportunity for sweet potato (Ipomea batatas) producers in Missouri. With improved management and cultural practices, it is possible for Missouri farmers to increase their income high quality sweet potatoes and watermelons (Citrullus lanatus).
Publications
- No publications reported this period
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