IMPROVE WHEAT PRODUCTIVITY BY USING A COMBINATION OF MINERAL NITROGEN, ORGANIC AND BIOLOGICAL FERTILIZERS UNDER NEW SANDY SOIL CONDITIONS

Abstract

Two experiment were conducted among two successive winter seasons (2019/2020 and 2020/2021) at Ismailia Research Station, Ismailia Governorate. The experiments were designed to improve wheat productivity by using a combination of mineral nitrogen, organic and biological fertilizers under new sandy soils conditions. A number of sixteen treatments designed by using recommended dose of nitrogen (Ammonium nitrate) or its half, organic fertilizer (Farm yard manure), grain inoculated with SWERI inoculum asbiofertilizer (Azotobacter chroococcum, B. megatheriumand B. circulant), and Streptomyces luteogriseus. The experimental results showed that the cultivated soil was belongs to sandy soil type and was poor in each of NPK elements, with low rate of each of microbial counts and dehydrogenase activity before planting. These parameters were improved after cultivation of wheat inoculated with biofertilizers and organic fertilizer compared to before planting. This was obvious when plant heights and weights of each of plant sample, straw, grains, ears and hundred wheat grains were estimated. It was also noted that nitrogen content and protein percentages in wheat grains as well as straw were improved. Treatment No. 16 consists of SWERI, and actinomycetes inoculums, as biofertilizers, and organic fertilizer combined with 50% of recommended dose of mineral nitrogen was the most effective ones compared to each of blank (unfertilized soil cultivated with un-inoculated grains, T01)or control (soil fertilized with the recommended of mineral nitrogen and cultivated with un-inoculated grains, T02). This was reflected by increasing the expected wheat yield obtained among treatment No. 16. This treatment was also gave the highest yield amounted of grains and straw which approximately an average of 19.1 Ardab per Feddan, while each of blank and control gave 7.25 and 12.8 Ardab per Feddan respectively. As a conclusion, treatment contained the SWERI and actinomycetes inoculums, organic fertilizer and 50% of recommended dose of mineral nitrogen has led to stimulate the growth of wheat plants in sandy soils, which promises the possibility of expanding the cultivation of such soils with wheat. Therefore, one can recommend with these experimental findings, which may contribute in a large and effective way to bridge the food gap, especially with the continuous increase in population numbers