Amira M. Hassen( 2021). Effect of Integrated Some Amendments and Bio-Fertilizers with
Mineral-N Fertilization on Soil Fertility and Peanut Crop Productivity
American-Eurasian J. Agric. & Environ. Sci., 21 (3): 157-167, 2021
ISSN 1818-6769
Abstract: Two field experiments were conducted during the two successive summer seasons of 2019 and 2020, on a loamy sand soil at El-Qantra Shark, Ismailia Governorate, Egypt. The aim was to study the effect of nitrogen fertilizer as Urea (46% N) at different rates (15, 20 and 30) kg N fed 1 either alone or in a combination with compost at a rate of 5Mg fed 1, bio-fertilizer, (Rhizobium radiobacter sp.) as salt tolerant PGPR strain as well as humate substances at a rate of 10 kg fed 1 on soil fertility and peanut (Arachis hypogaea) crop productivity. The results could be summarized as follow: The soil pH and EC were decreased due to application of compost with 20kg N fed 1 compared with the values of such values before planting. Also, in most cases, results reveal that the available content of NPK, after peanut harvest, were significantly influenced due to
compost, bio- fertilization and K- humate applied with 20 kg fed 1 of mineral N fertilizer compared to mineral fertilizer alone. In most cases, the peanut yield and its components as well as N, P, K, Fe, Mn and Zn uptake of peanut seed were significantly increased due to compost, bio- fertilization and K- humate applied with 20 kg
fed 1 of mineral N fertilizer compared to other treatments. The highest values of chlorophyll in peanut leaves at 70 days from planting and seed protein content were obtained when applying the 20 kg N fed 1with compost or bio-fertilizer. Also, the proline content was increased with decreasing the rates of mineral N fertilizer in
combination with all amendment treatments and the highest content of proline was obtained by application of 15 kg N/ fed 1 alone. So, it is worth mentioning the effective role of applied compost at the rate of 5Mg fed 1 or bio fertilizer in combination with urea at the rate of 20 kg N fed 1 could achieve the highest yield and best quality of peanut plants grown under salinity stress.
Keywords: (Groundnut Saline soil Urea Fertilizer Bio- fertilizer Compost K-humate)
