Title: The evaluation of cutting time and chemical matter using effect on loading component yield and yield of local cultivars in dry-bed seeding
Author: Abdolali Gilani
Abstract: This study planned for the reduction of plant height, lodging rate, and development of local cultivars’ grain yield. The experiment was carried out in a randomized complete blocks design on a split- plot with three replications for two years (2019-2020) in the Shavoor agriculture research station. Rice cultivars namely (v1- Champ, v2- Red-anbori, and v3- Hovize) were the main plot, and lodging control methods(LCM) as subplot included four levels (C1-no cutting, C2- application of Medax Top(./5liter) 60 days after planting, C3 and C4 , cutting to height( 35 c m) in 70 and 85 days after planting respectively. The results of the combined analysis of variance showed that the third-order interaction was significant in %1. The highest grain yield of v1 C2 and v2 C2 with 4998 and 4282 kg/h was obtained in the first and second years. But a higher yield of v3 C3 (4218 kg/h)was in the second year. The effect of year, cultivar, LCM, second-order interaction, and third-order interaction on plant height was significant in %1. In all of LCM, v1 and v3 had the highest and lowest plant height. The longest and shortest plant height related to v1 C1 and v3 C2 with 156.33 and 86.67 centimeters in the second and first year respectively. Using of cutting reduced the internode length of cultivars to -6 centimeters. Therefore cutting off the stem and using Medax Top can reduce plant height and inhabitor from lodging in v1 and v2.
Keywords: reducing plant height, Dry bed seeding, Peduncle, Grain yield