Integration of fodder production in corn-based cropping system [Philippines]
1986
Furoc, R.E. | Roxas, D.B. | Dizon, M.A. | Carangal, V.P. (International Rice Research Inst., Los Banos, Laguna (Philippines))
In the first experiment, a commercial grain cultivar of pigeon pea (Cajanus cajan (L.) Millsp.), mungbean (Vigna radiata (L.) Wilzeck) variety CES 55 and soybean (Glycine max (L.) Merril) variety L-114 were intersown at a population of 200,000 plants per hectare at 0, 1, 2, and 3 weeks after planting of the main corn crop variety pH 801. The intercrops and sowing dates did not significantly affect corn stover yield and yield of marketable green corn. The highest fodder yield was obtained from soybean sown simultaneously with green corn crop at 3.79 t/ha fresh herbage. In the second experiment, the effect of plant density and dates of harvesting soybean fodder intercropped with green corn was examined. Soybean was intersown at 200,000; 400,000 and 600,000 plants per hectare and cut as fodder 40 and 60 days after sowing. F1628resh herbage yield of soybean fodder ranged from 4.12 to 9.40 t/ha during the wet season and 2.6 to 4.6 t/ha during the dry season. The seasonal herbage yield variation was attributed to photoperiod sensitivity reponse of the variety. Intercropping did not depress marketable corn yield in both seasons. Monocorn plots generally had lower yield compared to intercropped treatments. The 400,000 plants per hectare and 40-day old fodder intercrops appears to be an optimum combination. Crude protein content of the soybean fodder averaged 33.1% (dry basis) and 30.1% at 40 and 60 days respectively, while IVDMD averaged at 64.3 and 56.8% respectively. Based on available corn stover, weight of non-marketable green corn and soybean fodder, projections of liveweight gains were made and economic profitability of this crop livestock production scheme was estimated and discus
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