Shereen A. H. Saad, M. A. Esmaeil and Nahed A. E. Aiad( 2017). Characterization And Prediction Of Long-Term Affected Soil After Permanent Agricultural PracticesMiddle East Journal of Agriculture Volume : 06 | Issue : 04 | Oct.-Dec. | 2017
Research Pages:1376-1388 ISSN 2077-4605
Abstract: There is no doubt that, nowadays agriculture can be depending on agriculture management. Hence, this study is a special attempt to set the pertinent facts and ideas about some soil properties and behavior affected by agriculture management. This study can be achieved by estimating the chemical characterization of soil surface and subsurface (available N, P and K, electrical conductivity (EC), soil reaction (pH), soil organic matter (OM%) and total soluble ions) not only in 1989, 2007 and 2015, but also predict it till 2025 by Slide-write computer program, as affected by permanent fertilization and two crop rotations) in real time and predict it in a future till 2025. This study carried out at a long-term fertilization experiment in Bahtim (clay soil) to study the prolonged effect of permanent fertilization treatments: Unfert (control treatment without any fertilizer or organic manure), N (mineral N fertilizer), NP (mineral N and P fertilizers), NPK (complete fertilization with mineral N, P and K) and FYM (farm yard manure) under crop rotations namely, one- year rotation (cotton yearly) and three-year rotation (cotton followed by clover then corn followed by wheat then corn). The results showed that, soil properties determined through the observation or the prediction data were in a high correlation with all agriculture tested practices along time. Concerning the long-time effect, there were a decline trend in the available (N, P and K) along time and expected to be till (2025) even with added the studied fertilizers. The results further show that even with use of fertilizers application, mineral fertilizers alone (N, NP and NPK fertilizers) in the intensive cropping system creates infertility and unfavorable conditions of soil which were lowering of soil (EC and OM%) and available (N, P and K). Permanent complete fertilizers (NPK) improve the tested soil chemical properties, but this improving is less than (FYM). Also, this study indicated that the practices of crop rotation could potentially improve soil fertility, three-year rotation enhanced (OM %), tested chemical properties than one- year rotation. Respecting to soil depth, available nutrients in the soil surface layer were higher than that in the deeper one under all studied treatments along time and expected to be till 2025 within both one or three-year rotation
Keywords: (Prediction, long-term fertilization, crop rotations, soil depth, soil chemical properties.)
