Effects of Brassinosteriods and Trichoderma sp. on Drought Tolerance of Khao Dok Mali 105 Grown in Greenhouse

Abstract

Agriculture is an important role in livelihoods and half of the area in country is utilized agriculture. The most of the lands are used for rice cultivation. The problem in dry season is low production. The aim of this study was to determine the effect of four brassinosteroids: 0, 0.005, 0.02, and 0.04 ppm with Trichoderma sp. 4 levels: 0, 1, 2, 3, kg per 100 iiters. of water. In KDML 105 rice, drought at the age of 30 and 75 days. The experimental design was Factorial in CRD including 16 treatments with 3 replications. Data collection at the age of 45 days after harvesting. It was found that the number of shoots per plant and the resistance to wilting increased with 0.02 ppm brassinosteroids plus Trichoderma sp. of 3 kg per 100 liters of water. Peak at 13.67 plants per hill by use of 0.04 ppm of brassinosteroids in combination with Trichoderma sp. was 1 kg per 100 liters of water, giving the highest resistance to suturing at 1.00 points. For data collection on 90 days after plant result was higher plant height with Trichoderma sp. 2 kg per 100 lit of water. The leaf area was highest when used with 0.4 ppm of brasinosteroids plus Trichoderma sp. of 1 kg per 100 liters of water. Most chlorophyll SPAD use brassinosteroids 0.005 ppm together with 2 kg per 100 L. of water. The rate of photosynthesis increased with the use of Trichoderma sp. 2 kg per 100 lit of water alone. And the water retention rate decreased. When using brassinosteroids 0.02 ppm with Trichoderma sp. 1 kg per 100 liters of water. At the age of reproduction, the percentage of seeds was highest when used with 0.04 ppm of brassinosteroids plus Trichoderma sp. of 2 kg per 100 liters of water. Root dry weight increased with 0.005 ppm Brassicosteroids. Dry weight increased with 0.005 ppm brassinosteroids plus 1 kg bodyweight. 100 liters of water. Therefore, the use of brasinosteroids together with Trichoderma sp. can help KDML 105 rice tolerate drought. Growth and yield were increased.