Manure Fertilization for Soybean Crop Production Inoculated with Rhizobium Bacteria Catalyzed by some Micronutrients Foliar Spraying

Abstract

A field study was carried out during two consecutive summer seasons of 2019 and 2020 at the Experimental Farm, Faculty of Agriculture, Al-Azahar University, Assiut Governorate (27° 12- 16.67= N latitude and 31° 09- 36.86= E longitude) to examine the impact of manure and some micronutrients application company with Rhizobium bacteria on soybean crop growth and its yield The experiment was laid out in a randomized complete block design with three replicates. The trial consisted of nine treatments as follows (T1: control, T2: inoculation with Rhizobium, T3: sheep manure addition, T4: pigeon manure addition, T5: Rhizobium+ iron + manganese + zinc, T6: Rhizobium + sheep manure, T7: Rhizobium + sheep manure + micro-nutrients, T8: Rhizobium + pigeon manure, T9: Rhizobium + pigeon manure + micronutrients. Inoculation of soybean seeds with Rhizobium and organic fertilization and spraying with micronutrients (T9) resulted in a significant increase in the tested traits (plant height, leaves No./ plant, branches No/ plant, pods No./ plant, seeds No./ pod, seeds No./ Plant, 100-seedweight, seed and biological yields. The T9 treatment gave the highest seed yield of 1.46 and 1.49 ton/ fed that increased by 25.86 and 26.27% in the 1st and 2nd season respectively compared to control treatment (T1) that realized 1.16 and 1.18 ton/ fed for the corresponding seasons. Seed yield was the strongest positively significant correlated with all tested traits in both seasons. So, implement balanced and timely nutrient management practices for soybean contributes to the sustainable growth yield in a good quality.