- 期刊
- OpenAccess
Effects of NPK fertilizer and season on the flowering and sex expression of pumpkin (Cucurbita pepo Linn.)
並列摘要
Effects of NPK 15:15:15 compound fertilizer and planting season on flowering and sex expression of pumpkin were analyzed at the Teaching and Research Farm, Obafemi Awolowo University, Ile-Ife, Nigeria in year 2010. Results deciphered that day to 50% flowering, number of male and female flowers responded to season than fertilizer rates. Late season planting reached 50% flowering 5 days earlier than that of early season. At zero fertilizer rate 50% flowering was attained at 56 days after planting while the application of 250 kg ha-1 NPK (15:15:15) delayed 50% flowering by 4 days; at 100 - 150 kg NPK ha^(-1), the delay was 2 days. Early season had more number of male and female flowers per plant (25) than the late season ones (15). The ratio of male to female flowers was 3:1. Higher number of flowers per plant was obtained at 100 kg NPK ha^(-1) (25) than in control (12). However, increasing fertilizer rate above 100 kg does not significantly (P＜0.05) improve the number of flowers produced.
延伸閱讀
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