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ThesisItem Open Access SOIL PLANT WATER DYNAMICS AND SOIL HEALTH AS AFFECTED BY NUTRIENT MANAGEMENT PRACTICES UNDER GRAM MAIZE CROPPING SEQUENCE(CSKHPKV, Palampur, 2016) DHIMAN, SHILVA; Dubey, Y.P.ABSTRACT An experiment was conducted at the farm of Department of Soil Science, CSKHPKV, Palampur during 2013-16 by taking gram-maize cropping sequence. There were three tillage treatments i.e. conservation tillage, conventional tillage and no tillage; and three nutrient management practices i.e. organic management, integrated management and RDF management (inorganic). Gram and maize was taken as main crops and wheat was grown with gram crop without any tillage practice i.e. integrated and RDF management. Aerobic and anaerobic composts were used in crop as soil application and for top dressing. The organic management with conventional tillage was found to be significantly superior with rest of the treatment combinations on yield attributes, symbiotic parameters and yield of gram in all the three years. The major constraints to grow gram at Palampur was the attack of root rot disease. The disease incidence was reduced through organic nutrient management with conventional tillage. The yield attributes and yield of maize was better in integrated management in first year and in organic management in second year. The conventional tillage in both the years registered significant impact on yield and yield attributes of maize. The yield and yield attributes was better in gram-maize cropping sequence than wheat-maize cropping sequence under integrated and RDF management. The protein and carbohydrate content of gram and maize in both seed and straw was found to be higher in organic management with conventional tillage. The nutrient content and uptake of nutrients was the highest in organic nutrient management with conventional tillage in all the crop growth stages in gram and at harvest whereas in maize it was the highest in integrated nutrient management with conventional tillage. The RLWC (Relative Leaf Water Content), LSC (Leaf Saturation Curve) and volumetric soil moisture content was recorded highest in organic management with conventional tillage in both gram and maize. All the physical properties except available water and SPR (Soil Penetration Resistance) were found to be higher in inorganic nutrient management with conventional tillage. The chemical properties i.e. pH, OC, total nitrogen and total phosphorus was found to be highest in organic nutrient management with conventional tillage whereas available N, P and K was found to be significantly higher in integrated nutrient management with conventional tillage in both surface and subsurface soil. The ammonical nitrogen in both surface and subsurface soil was found to be highest in inorganic nutrient management with conservation tillage whereas the nitrate nitrogen in both surface and subsurface soil was found to be higher in inorganic management with conventional tillage. The physical properties i.e. particle density, WHC (Water Holding Capacity), FC (Field Capacity), PWP (Permanent Wilting Point), AW (Available Water) and WSA (Water Stable Aggregates) were significantly and positively correlated with chemical and biological properties whereas SPR and ammonical nitrogen were negatively correlated. All the chemical properties were positively correlated with soil physical and biological properties except SPR and pore space. All the biological properties were positively and significantly correlated with physical and chemical properties except SPR, ammonical nitrogen and pore space. The physical, chemical and biological properties were generally positively correlated with each other except few parameters i.e. SPR, Ammonical nitrogen and pore space at both the depths.