Effect of mineral and organic fertilizers on yield, yield components and chemical composition of some wheat cultivars

Two field experiments were carried out during 2017/2018 and 2018/2019 seasons at Wadi El- Rayan Fayoum Governorate, Egypt to study the effect of nitrogen fertilizer (ammonia gas 82%) and organic fertilizer on yield and its components of two wheat cultivars. The main results could be summarized as follows: Misr-1 cultivar exceed Sids-1 cultivar in grain yield and its components significantly except grain yield (ton/fed.) and harvest index%. Addition of 75kg N/feddan (ammonia gas 82%) resulted in a significant increment in yield and its components except harvest index% comparison with other treatments (control and 50 kg N/ feddan). The application of organic fertilizer at the rate of 15 ton/ feddan significantly increased yield and its components, except harvest index%. The interaction between wheat cultivars and nitrogen fertilizer was significant yield and its components except grain index (g), straw yield ton/feddan, protein percentage and carbohydrate percentage, while the interaction between wheat cultivars and organic fertilizer was significant in all characters under study except number of tillers/m 2 , grain index and straw yield (ton/ feddan). The interaction between nitrogen fertilizer and organic fertilizer was significant in all characters under study except number of spikes/ m 2 and straw yield (ton/ feddan). It is clear from results that the interaction between wheat cultivars x nitrogen fertilizer x organic fertilizer was significant in all characters under study except number of spikes/ m 2 , straw yield (ton/ feddan) and protein percentage%. The most effective treatment were obtain by using Misr-1 cultivar +75 kg N / fed., + 15 ton / fed., organic fertilizer.