Publication Date
1985
Location
Kyoto Japan
Description
To improve dallisgrass (Paspalum dilatatum Poir.) pasture productivity, the effects of autumn or spring topdressing in a field experiment and autumn nitrogen (N) application levels in a pot experiment on the regrowth and carbohydrate accumulation until winter and on the early summer production were studied. Dallisgrass pasture was topdressed in either autumn (late September) or spring (early March) at 0.5 kg/a each of N, phosphate (P2O5), and potash (K20), after the final cutting in late September 1978. Plants in pots were topdressed at the rates of 0.5, 1, 2, and 4 kg N/a, just after cutting in early October 1980. Chages in total non-structural carbohydrates (TNC) in stubble (tiller base below 5 cm) in the pasture were similar in autumn and spring topdressing. TNC in leaves and stems in mid November and late December was significantly higher in autumn topdressing than that in spring topdressing. Dry matter (DM) and nutrients yields in mid June were higher in autumn topdressing than those in spring topdressing though the differences were not significsnt. In the pot experiment DM weight of stubble and leaves and stems, and TNC in stubble in mid December significantly increased with increasing autumn N topdressing level, therefore, DM yields in early June increased by heavier N; however, the rates up to 2 kg N/a seem to be more effective than at 4 kg N/a.
Citation
Kobayashi, T, "Effect of Fertilization in Autumn or After Wintering on Dallisgrass Production in the Following Season" (1985). IGC Proceedings (1985-2023). 15.
(URL: https://uknowledge.uky.edu/igc/1985/ses16/15)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Effect of Fertilization in Autumn or After Wintering on Dallisgrass Production in the Following Season
Kyoto Japan
To improve dallisgrass (Paspalum dilatatum Poir.) pasture productivity, the effects of autumn or spring topdressing in a field experiment and autumn nitrogen (N) application levels in a pot experiment on the regrowth and carbohydrate accumulation until winter and on the early summer production were studied. Dallisgrass pasture was topdressed in either autumn (late September) or spring (early March) at 0.5 kg/a each of N, phosphate (P2O5), and potash (K20), after the final cutting in late September 1978. Plants in pots were topdressed at the rates of 0.5, 1, 2, and 4 kg N/a, just after cutting in early October 1980. Chages in total non-structural carbohydrates (TNC) in stubble (tiller base below 5 cm) in the pasture were similar in autumn and spring topdressing. TNC in leaves and stems in mid November and late December was significantly higher in autumn topdressing than that in spring topdressing. Dry matter (DM) and nutrients yields in mid June were higher in autumn topdressing than those in spring topdressing though the differences were not significsnt. In the pot experiment DM weight of stubble and leaves and stems, and TNC in stubble in mid December significantly increased with increasing autumn N topdressing level, therefore, DM yields in early June increased by heavier N; however, the rates up to 2 kg N/a seem to be more effective than at 4 kg N/a.
