The Effect of using Organic and Minerals Fertilizers on Some Chemical and Physical Characteristics of Sandy Soil & Quality Productivity of Lupine (Lupinus termis L.) Yield

This study aimed to investigate the effectiveness of compost and biochar amendment as improvement in physical - chemical properties of sandy Loam soil and, So, maintaining the sustainability of (Lupinus termis L.) growing systems, a field experiment was carried out during the two successive winter seasons of 2021/ 2022 and 2022/ 2023 respectively, at the Ismailia Agriculture Research Station Agriculture Research center (ARC) – Egypt, (30o 35’ 41.9" N latitude 32o 16’ 45.8" E longitude .the super effect of compost and biochar amendment with different rates of mineral nitrogen on some chemical and physical properties and productivity of Lupine (Lupinus termis L.) under sandy Loam soil , the study design was a split block design in improving some physical and chemical properties of sandy Loam soil. Results showed that the available macronutrients N, P and K all Comparisons Test of Compost and Biochar for Mineral are significantly different from one another, while, all Comparisons Test of Rates of N and all treatments are no significant pairwise differences among the means, the impact of different rates of Mineral, compost and biochar treatment on soil pH by rates of N (0,20,40and 60 kg/fed), the results explained that no significant different between all treatments. But ,OM results showed that, compost or biochar compost were slightly increase organic matter content as compare with control and (CEC), results obtained that compost or biochar compost were slightly increase in CEC, this results due to decompose and release more carboxyl and hydroxyl phenolic groups, the main Effect of mineral, compost and biochar obtained in physical and chemical properties soil, The extra influence prosity was in The effect of Mineral-N, the results obtained that, Biochar treatment is significantly affected, but all treatments, there are no significant pairwise differences among the means. the values of drainable pores (DP) and water holding pores (WHP) were higher value in compost > biochar than the other pores in compost, Biochar treatments and the effect of physical properties on slowly drainable pores (SD) and (FC)field capacity were are no significant pairwise differences among the means, the application of all amendments decreased soil HC (cmh-1) values when compared to the control. the results observation that compost>Biochar>minerals and The effect of Mineral-N was followed the pattern of N60> N40 > N20 > N0, as results showed that, all two means are significantly different from one another. obtained that, the value of bulk density is decreased by adding treatments compost > biochar > minerals treatment there are no significant, finally, results obtained the effect of compost, biochar on improving sandy loamy soil, more than, The effect of Mineral-N.