Publication Date
1985
Location
Kyoto Japan
Description
This investigation was carried out to elucidate the characteristics of dry matter production during the regrowth period of bahiagrass (Paspalum notatum Flugge) sward. Growth analysis was periodically done throughout the regrowth period based on total dry weight and leaf area index. Total and top dry weight increased showing a typical sigmoid curve from July 27 to September 11. Produced dry weight and average crop growth rate during the regrowth period were 983 gDW/m2 and 21.3 gDW/m2/day, respectively. The harvest index on September 11 was 45.4%. Leaf area index also increased showing the sigmoid curve during the regrowth. Maximum leaf area was 8. 53 on September 11. The optimum leaf area index and maximum crop growth rate during the regrowth period were 5.5 and 30 gDW/m2/day, respectively. Net assimilation rate decreased linearly with increasing of leaf area index and average net assimilation rate throughout whole regrowth period was 4.48 gDW/m2/day. Further, productive structure of canopy in this grass sward showed a typical erect-leaved type and light extinction coefficient of the canopy was 0.36.
Citation
Agata, W, "Studies on Dry Matter Production of Bahiagrass (Paspalum notatum) Sward I. Characteristics of Dry Matter Production during the Regrowth Period" (1985). IGC Proceedings (1985-2023). 7.
(URL: https://uknowledge.uky.edu/igc/1985/ses14/7)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Studies on Dry Matter Production of Bahiagrass (Paspalum notatum) Sward I. Characteristics of Dry Matter Production during the Regrowth Period
Kyoto Japan
This investigation was carried out to elucidate the characteristics of dry matter production during the regrowth period of bahiagrass (Paspalum notatum Flugge) sward. Growth analysis was periodically done throughout the regrowth period based on total dry weight and leaf area index. Total and top dry weight increased showing a typical sigmoid curve from July 27 to September 11. Produced dry weight and average crop growth rate during the regrowth period were 983 gDW/m2 and 21.3 gDW/m2/day, respectively. The harvest index on September 11 was 45.4%. Leaf area index also increased showing the sigmoid curve during the regrowth. Maximum leaf area was 8. 53 on September 11. The optimum leaf area index and maximum crop growth rate during the regrowth period were 5.5 and 30 gDW/m2/day, respectively. Net assimilation rate decreased linearly with increasing of leaf area index and average net assimilation rate throughout whole regrowth period was 4.48 gDW/m2/day. Further, productive structure of canopy in this grass sward showed a typical erect-leaved type and light extinction coefficient of the canopy was 0.36.
