The effect of planting date and depth on the yield of potato cultivars in winter cultivation in Jiroft region
Subject Areas : Journal of plant ecophysiologyمحمد رضا بهرام جردی 1 , غلامعباس محمدی 2
1 - گروه زراعت، دانشگاه آزاد اسلامی، واحد جیرفت، جیرفت، ایران
2 - گروه زراعت، دانشگاه آزاد اسلامی، واحد جیرفت، جیرفت، ایران
Keywords: Yield, Potato, Endosperm, seed tuber, main stem,
Abstract :
In order to investigate the effect of different winter planting dates at two planting depths on the yield characteristics of potato cultivars, an experiment was carried out in the agricultural year of 2017-2016 in the teaching and research farm of Jiroft Branch Islamic Azad University, in the form of double split plots in the form of randomized complete blocks in four The repetition was executed. The main factor was cultivar (bamboo, Colombo and Sante), the sub-factor was planting depth (10 and 20 cm) and the sub-factor was planting date (21 December, 10 and 30 January). The results showed that the planting dates of Di and Bahman are superior in terms of total yield, yield of large tubers (larger than 55 mm), seed tubers (35-55 mm) and small tubers (smaller than 35 mm). It is significant compared to the planting date of December. By increasing the planting depth from 10 to 20 cm, the total performance and the performance of large tubers increased significantly, and no significant difference was observed in other cases. The amount of total yield was 40.39 tons per hectare and the yield of large tubers was 27.84 tons per hectare in the bamboo cultivar with a statistically significant difference more than the other two cultivars. Investigating the growth and development of plants showed that the earliest time of tuber formation in plants was cultivated in December and the latest in plants was cultivated in December. The number of aerial stems in the plants cultivated in December was also less than the plants in 10 and 30 January. Also, December cultivation did not result in early harvest.