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The first experiment was carried out to investigate the effect of inoculating sweet pepper seeds and transplant roots with Nitrobin (contains N-free living bacteria; Azotobacter and Azospirillium) and Phosphorin (contains a PDB such Bacillus) in order to decreased the needed N and P fertilizers required for growing and producing sweet peppers under clay loam soil conditions. The second experiment aimed to study the effect of different organic fertilizer sources (FYM, Chichen manure, Biogas manure and Agrolig) in order to determine the optimum organic level and source required for clean sweet...

The purpose of this experiment is to study the effect of organic and mineral nitrogen fertilizers on the vegetative growth, leaf chemical composition and tuber yield and quality of potato Sponta cv. (medium early to medium late) under new cultivated soil conditions and using drip irrigation system. This experiment included 16 treatments which were 3-organic fertilizer sources i.e., Chicken manure, Biogas manure and Compost, each at 50 kg N/fed. or without organic fertilizer within 4-total levels of N (50, 100, 150 and 200 kg N/fed.). Phosphorus and potassium fertilizers were added to all...