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Inter- and Between-row Spacing on Yield and Quality of a Pumpkin Interspecific Hybrid

Amani, M., Olfati, J. A., Esfahani, M.
International journal of vegetable science 2017 v.23 no.2 pp. 151-157
Cucurbita moschata, carotenoids, crop yield, growers, heterosis, hybrids, plant density, pumpkins, row spacing, vegetative growth
Previous research indicated that the pumpkin (Cucurbita moschata L.) interspecific hybrid ‘MO11 × P25’ had the most positive and negative heterosis for plant yield and plant length, respectively. Due to its negative heterosis for plant length it is possible to culture this plant at a higher plant density. Growers have two options when increasing plant populations per unit area; either within-row or between-row spacing can be decreased. The objective of this research was to determine the effect of altering plant population by varying between-row and in-row spacing on yield of pumpkin interspecific hybrid ‘MO11 × P25’ to increase yield by reducing vegetative growth and increasing reproductive. The interspecific hybrid ‘MO11 × P25’ was established at 1, 2, or 3 m between rows and 0.5, 0.75, or 1 m within rows. There were differences between inter- and between-row distances and their interaction on all characteristics except carotenoids content. Increasing interspecific hybrid ‘MO11 × P25’ plant population by varying both between-row and in-row spacing increased yield; the highest yield (98.4 t•ha ⁻¹) was with a spacing of 1 × 0.5 m.