High quality and yield cultivation methods of the peanut cultivar 'Chiba P114'
2018
Kuroda, S. | Kuwata, C. | Iwasa, H. | Oida, H. | Suzuki, K.
The Peanut Cultivar 'Chiba P114' has a higher sucrose content but its branches are longer, compared with cv. Nakateyutaka. In order to be stable the high sucrose content and yield, and control the branch growth of the Peanut Cultivar 'Chiba P114', we investigated the effect of planting density, fertilizer, sowing time and harvest time on its growth, yield and quality. 1. The optimal planting density for harvesting workability and yield is 500 plants/a (1 plant per hill at 30-cm hill spacing). 2. Varying the amounts of basal dressing and topdressing at flowering time had no discernible effect on growth, yield or quality, which indicated that the standard amounts of basal dressing are suitable and topdressing at flowering time is unnecessary. 3. Optimal sowing time is from mid-May to mid-June. Earlier sowing caused a decrease in sucrose content and later sowing caused a reduction of the yield. 4. Varying the harvest time had no significant effect on the sucrose content or eating quality. However, the rate of browned and faded seeds increased, especially from 85 days after flowering, which indicates that harvesting at 80 days after flowering is most appropriate. 5. Irrigation at 20 days after flowering contributed to an increase in the yield of pods without decreasing the sucrose content.
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