Amal El-Guibali; Sahar, M. Zakaria and Magda, A.Ewais( 2016). Integrated nitrogen management for growth and yield of maize (Zea mays L.). EEgypt. J. of Appl. Sci., Vol. 31(10): 233-247.
Abstract: A field experiment was conducted to study the effect of integrated use of organic, bio and inorganic fertilizers on growth and yield of maize (Zea mays L.) (c.v., Triple hybrid 325) during the two successive growing summer seasons of 2013 and 2014 in sandy soil at El-Sharawy village in EL-Bostan area-Noubaria Region, El-beheira governorate (Latitude 30° 43' 22.01" N, Longitude 30° 16' 44.50" E). The treatments were arranged in a complete randomized block design with three replicates. Significant positive influences were noticed for 50% of the recommended mineral N+25% of the recommended N as organic +Bio on yield and yield parameters of maize plants when compared to the other combined treatments. Also, results indicated that the treatments comprising 75% mineral N +bio, 75% mineral N+25% organic N and 50% mineral N +50% organic N significantly increased some of studied parameters such as plant height, weight of 100 grain, grains and biological yield than 100% mineral N. All quality parameters, i.e. protein, oil %, protein and oil yield (kg fed-1.), total carbohydrate and Starch content under 50% mineral N+25% organic N +Bio, 75% mineral N +25% organic N and 75% mineral N +bio treatments were recorded the highest and significant values comparing to the lowest value recorded by the 100% mineral N or organic N alone. Treatment of 50% mineral +25% organic N +Bio produced the highest grain yield (4493.67 Kg fed-1) which was10.87 % higher than the 100% mineral N control (4053Kg fed-1) and 35.94% more than the lowest yield of 100% organic N (3305.67 Kg fed-1).Hence, it can be concluded that the integrated fertilizer management of mineral N, organic and bio fertilizer could be used to minimizing the amount of mineral N fertilizer for different crops and reducing the soil or water pollution.
Keywords: (nitrogen management Maize growth Maize yield )
