Author:
Al-Mashhadani Ahmed Shehab,Al-Budeiri Muntadher Hammadi,Al-Khazali Ammar Jasim,Hassan Saad Fleah,Kadhem Ali Nadhem,Harbi Huda Hussien
Abstract
Abstract
This study aimed to determine the optimum seeding rate of rice (Oryza Sativa L.) cultivars in iraq. The experiment was conducted at Al Diwaniyah Research Station, Agricultural Research Office/Ministry of Agriculture for two seasons 2019 and 2021. A Factorial Experiment Design was used According to RCBD design in an order of split plot with three replicates, The main plots occupied the cultivars factor which was: - Yasamine (Y), Forat (F), Dijla (D), Baraka (B), Gadeer (G) and Anbar (A). While the seeding rate factor filled sub plots: - 40, 60, 80, 100, 120, 140 Kg ha-1. The research results for both seasons, indicated that each cultivar had an ideal seeding rate, as the seeding rate for the Y variety is 120 kgha-1, as it gave the best leaf area, the weight of 1000 grain, and the grains panicles-1, which was reflected in the best grain yield at this level. The results also showed that the seeding rate for the F variety was 140 kgha-1, as it gave the best plant height, panicles m-2, weight of 1000 grain, and grains panicles-1, thus giving the best grain yield at this level. The results showed that the seeding rate for variety D was 140 kgha-1, which gave the best plant height, leaf area, panicles m-2, and grains panicles-1, which reflected positively on the best grain yield at this level. The results indicated that the seeding rate for variety B was kgha-1, as it gave the best plant height, panicle m-2, unfertility, and grains panicles-1, which was reflected in the best grain yield at this level. As for the G variety, the best seeding rate was 120 kgha-1, as it excelled in all the studied treatments (plant height, panicle length, leaf area, panicles m-2, weight of 1000 grain, unfertility, and grains panicles-1), which was significantly reflected on the grain yield at this level. Whereas, cultivar A showed that the best seeding rate was 140 kgha-1 if it gave the best plant height, leaf area and panicles m-2 and thus gave the best grain yield at this level.