Energy efficiency and productivity on intercropping of sweet corn (Zea mays saccharata Sturt.) and mungbean (Vigna radiata L.) with various tillage and crop population
2004
Santoso, M.B. | Mugnisjah, W.Q. | Agusta, M. | Burham, N.A.
Experiment of sweet corn-mungbean intercropping was conducted to know its efficiency and productivity. The objective of the experiment was to get combination of tillage and crop population which more productive and efficient in energy use. Experiment was arranged in split plot design, consisted of two factors, (1) method of tillages (conventional tillage, minimum tillage, and non tillage) as main plot and (2) mungbean population (125 000, 166 666, 250 000, and 500 000 plants/hectare) intercropped with sweet corn (35 700 plants/hectare) as sub plot. The results showed that no interaction among two factors examined. The highest cob weight of sweet corn, grain yield of mungbean, and harvest index of mungbean were achieved by conventional tillage. Highest population of mungbean (500 000 plants/hectare) produced highest mungbean production, especially on the amount of pod and grain yield, but harvest index was the lowest. While, corn yield was reduced by increasing crop population. Increasing of crop population improved efficiency of light energy interception, but conversion efficiency of light energy and energy use efficiency was not significantly different. Results of the experiment also indicated that the highest commercial input efficiency to economical yield (0.99) was obtained from mungbean population of 166 666 plants/hectare with sweet corn population of 35.700 plants/hectare. Increasing mungbean population up to 500 000 plants/hectare improved efficiency of biological yield (3.92).
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