Tropical Grasslands (2001) Volume 35, 129138
Effects of plant spacing and sowing time on seed yield and seed quality of Paspalum atratum in Thailand
C. PHAIKAEW1, C. KHEMSAWAT1, S. TUDSRI2, Y. ISHII3, H. NUMAGUCHI3 and E. TSUZUKI3
1Division of Animal Nutrition, Department of Livestock Development, Bangkok, Thailand
The effects of plant spacing on seed yields of Paspalum atratum were evaluated in 1996–1998 on a low lying, infertile soil in Yasothorn province, north-east Thailand, comparing 4 plant spacings of 75 × 75, 75 × 100, 75 × 125 and 100 × 100 cm. All spacings produced high seed yields (average 819 kg/ha), with no differences between row spacings. All plant spacings produced seed of high quality, with seed germination and thousand pure-seed weights averaging 85% and 3.1 g, respectively. However, there was a tendency to obtain higher yields of good quality seed from the wider row spacings of 100 and 125 cm in all 3 years.