2017 Volume 16 Issue 2 Pages 131-135
The objective of this study was to investigate the effects of the planting distance, system, and planting time on seed yield of the pumpkin (Cucurbita pepo L.) cultivar ‘Stripe pepo’ for edible seed production in Hokkaido. The effects of row width on the seed yield were the same at 150 and 300 cm. This can contribute to labor-saving in the case of ridging at a 300-cm row width compared with a 150-cm row width. Decreased intra-row spacing, from 52 to 35 cm, resulted in a significant increase in the seed yield. In addition, the intra-row spacing of 35 cm was suggested to be more appropriate for planting than two-row zigzag planting with an intra-row spacing of 70 cm at a row width of 300 cm. Furthermore, the number of fruits and seed yield per unit area increased further when the planting time was set earlier, between late-May and mid-June.
