Evaluation of cowpea cultivars before and after lowland rice environments [Philippines]
1986
Lantican, L.A. | Pandey, R.K. (International Rice Research Inst., Los Banos, Laguna (Philippines). Rice Farming Systems Program)
Variety trials on grain, vegetable and dual purpose (both grain and fodder) types of cowpea were conducted to identify cultivars suitable for pre and post rice cropping systems. The trials were conducted at the International Rice Research Institute, Los Banos, Laguna [Philippines] lowland farm before and after rice in 1984-85, under rainfed condition without fertilization. Significant differences among the entries were observed for grain, fresh pod and fodder yields. After rice, the most promising cultivars were TVx 2907-02D for grain type, BS3 (6-14R x AS) for vegetable type and TVx 2724-01F for dual purpose type giving yields of 1.678 t/ha, 11.128 t/ha and 1.582 t/ha grain + 17.040 t/ha fodder, respectively. Before rice, the highest yielders are IT82D-891 (1.017 t/ha) for grain type and UPLB S4 (11.470 t/ha) for vegetable type. In general, early maturing varieties with highly determinate plant type are more suitable before rice whereas medium maturing varieties with semi to indeterminate plant type perform better after rice.
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