Determination of the effects of different row spacings on yield and some other properties of pea (Pisum sativum L.) cultivars sown in spring and autumn

This study was conducted to determine the effects of different row spacings (20, 30 and 40 cm) on fresh seed yield and some other properties of pea (Pisum sativum L.) cultivars (Carina, Sprinter and Utrillo) sown in spring and autumn in Samsun conditions. The experiment was set in split-split plot design with three replications. Green pod and fresh seed yield, pod/plant, pod length, seed/pod, unfilled seed/pod, fresh seed weight/fresh pod weight, fresh seed ratio remained above 9.5 mm sieve and under 7.5 mm sieve and protein content of seeds harvested at green mature stage were investigated. Utrillo (13.78 t/ha) and Sprinter (10.87 t/ha) were high yielded cultivars for green pod yield. The highest green pod yield was (14.49 t/ha) obtained from 20 cm row spacing. Autumn and spring sowings gave 13.49 and 7.64 t/ha green pod yield, respectively. For fresh seed yield, best cultivars were Utrillo (5.82 t/ha) and Sprinter (5.29 t/ha). 20 cm row spacing gave the highest fresh seed yield (6.67 t/ha). Fresh seed yield obtained from autumn sowing (6.64 t/ha) was higher than spring sowing (3.27 t/ha). According to the results of the study, Utrillo and Sprinter cultivars, 20 cm row spacing and autumn sowing may be recommended in Samsun conditions.