Water Stress Mitigation on Growth, Yield and Quality Traits of Wheat (Triticumaestivum L.) Using Biofertilizer Inoculation

摘要

The aims of this research were to investigate the effects of biofertilization with a mixture of different microbial and fungi strains on wheat growth, water use efficiency and yield under water stress conditions plant. Microbial strains were Azospirillum brasilense, Bacillus megaterium var phosphaticum, Bacillus cereus, Bacillus subtilis, Pseudomonas fluorescence as well as the plant growth-promoting fungus as arbuscular mycorrhizal fungi (AMF). The biofertilizer was mixed with wheat seeds (verity Sakha-93) immediately before cultivation. Chemical and mechanical analyses of soil and irrigation water were done before sowing. Generally, the results showed significant increases and improvements in irrigation water use efficiency, growth, yield, yield attributes, protein and carbohydrate contents of wheat due to biofertilizer treatments under water stress. Biofertilizer inoculation increased grain, straw and biological yield/faddan by 26, 18 and 20 %, respectively. Meanwhile, biofertilizer inoculation reported about 30% increase in water use efficiency and irrigation water use efficiency increased from 1.12 to 1.46 for without biofertilizer and with biofertilizer treatments, respectively. It may be concluded from this study that biofertilizer inoculation to newly reclaimed soil is effective in improving crop productivity. It is unlikely that a single strain in the mixture was responsible for this but is more likely to be due to the mixture of several strains which save and ease nutrient supply to wheat. These increases represent applicable practice which may help to obtain a greater sustainability of the agro ecosystems.