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Synopsis : the MARIF maize on-farm research programme 1984; development of an on-farm research programme with a farming systems perspective
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Synopsis : the MARIF maize on-farm research programme 1984; development of an on-farm research programme with a farming systems perspective
A synopsis of the 1984 maize on-farm research program at the Malang Research Institute for Food Crops (MARIF) in eastern Java is presented, summarizing interim results of the informal survey, a round of on-farm trials implemented in the first dry season, and proposals for further research (currently being undertaken).
Van Santen, C. E. · 1984
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Abstract
Diagnostic observations on the maize crop revealed spindly development with discolored leaves, despite intensive management; some interplant competition; less than optimal application of high quantities of nitrogen fertilizer; and some use of impure seed. During the farm trials, farmer seed was compared to certified MARIF seed, and crops were raised under varying plant density and timing and quantity of fertilizer applications. The average trial yield of 3900 kg dry grain per hectare was at least 25% below the yield potential that should be obtainable from the varieties selected and the level of management applied; data suggest that low yields are caused by fertility problems in the young, dry volcanic soils. Attached is a reprint of a colleague"s letter which comments on the synopsis, thereby demonstrating the dialogue that can be initiated by networking papers.
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