Evaluation of tillage systems for rainfed wheat
2002
Razzaq, A. | Hashmi, N.I. (National Agricultural Research Centre, Islamabad (Pakistan). Wheat Programme) | Majid, A. | Hobbs, P.R.
The paper analyses the data from on-farm experiments on tillage systems for rainfed wheat in the high rainfall areas of Islamabad District from 1986 to 1989. Experiments were conducted on farmer's fields previously planted with maize. Three tillage systems, deep ploughing (moldboard), shallow ploughing (cultivator) and minimum tillage (direct drilling) were studied. The average grain and straw yields were 3848 kg and 6276 kg/ha, respectively, for deep ploughed fields, and 3433 kg grain and 5807 kg straw/ha for direct drilled plots. The lowest yield (3290 kg grain and 5502 kg straw/ha) was obtained by the traditional method of shallow ploughing. Same trends were found in tillers/m2. The grain yield was positively correlated with tillers/m2 and 1000- grain weight. The two improved methods, deep ploughing for wheat and direct drilling of wheat, provided almost equal income (Rs. 5597 and 5565/ha respectively). The net benefit from traditional ploughing for wheat was Rs. 4245/ha, which was 31% less than the other two treatments.
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