Effect of planting date on crop yield under no-tillage condition.

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In this paper, We investigated an effect of planting date on growth and seed yield of barley, soybean and corn (Zea mays L.) under no-tillage condition.1) The effects of planting date on growth and seed yield were significant in the three crops, so we applied the second order regression equations with the maximum values between planting date and seed yield to these crops.2) The significant differences at 1% error level between conventional tillage (CT) and no-tillage (NT) were not observed in seed yield of the three crops.3) In the measurement of combustion heat related to the component of crop body, the differences between CT and NT were not clear. The clear differences among the three crops were not observed in leaf and stem, but in seed.
日本農作業学会の論文