اثر فواصل ردیف باریک ‭(NR) ‬و بسیار باریک ‭(UNR) ‬بر عملکرد، زودرسی و صفات کیفی پنبه ‭(Gossypium hirsutum)‬

One of the important method to increase yield and earliness in cotton( Gossypium hirsutum) is planting it in ultra narrow row (UNR) and narrow row (NR) crop production system. In this method cotton is planted in lower than 40 (cm) instead of 80 or 100 (cm). To study the effect of UNR and NR on 2 commercial cotton, a factorial experiment in randomized compleat block design was selected. Factors were row spacing (20, 30, 40, 50, 60, 70, 80, 90, 100) and cultivars (SAHEL, SIOKRA). The experiment was done in Gorgan in 3 years, 2007-9. Rezults for three years showed that Sahel cotton was better in yield in 20(cm) than control 80 (cm). Siokra as the other commercial cultivar was better in 30 (cm) than the other for 2 years of3.

Keywords:

پنبه , فاصله گذاری , عملکرد زراعی , زودرسی (گیاه)