Effect of Cattle Urine Application on Soil Properties of Lateritic Soils under Spinach Cultivation

Abstract

The experiment was undertaken to study effect of soil application of cattle urine on growth and yield of spinach in Lateritic soil at wire house of Division of Soil Science and Agriculture Chemistry RCSM College of Agriculture Kolhapur during rabi- 2020. There are total seven nitrogen substitution treatments through urea and cattle urine. The treatment consist of absolute control, recommended dose of fertilizers (40:40:40 kg ha-1N, P2O5 and K2O), general recommended dose of fertilizers (40:40:40 kg ha-1 N, P2O5 and K2O + FYM @ 10 t ha-1), 75% RDN-urea + 25% N- cattle urine, 50% RDN-urea + 50% N-cattle urine, 25% RDN-urea + 75% N- cattle urine, 100% RDN-cattle urine replicated thrice in complexly randomized design. It could be observed from the data that pH and EC of lateritic soil was increased with the application of cattle urine for nitrogen substation. Significantly higher pH (7.67) and EC (1.01dsm-1) of lateritic soil was reported with the application of 100% RDN through cattle urine at first of spinach (46 DAS). Decreasing trend in soil EC was observed at second ut of spinach in all the treatments under study while non-significant results were obtained for soil reaction (pH) at second cut. Significantly higher (1.40%) and (1.07%) organic carbon in lateritic soil was reported with the application of 100% RDN through cattle urine at first and second cut of spinach. Calcium carbonate content in lateritic soil at both the cuts of spinach were recorded non- significant result due to the application of nitrogen through fertilizer and cattle urine. Significantly higher (253.93 kg ha-1) soil available nitrogen (253.93 and 184.97 kg ha-1), phosphorus (30.72 and 29.10 kg ha-1) and potassium (313.43 and 303.00 kg ha-1) were recorded at first and second cut of spinach with the application of 100% RDN through cattle urine respectively. Significantly higher DTPA Fe (26.55 and 24.30 mg kg-1), Mn (23.39 and 21.70 mg kg-1), Zn (7.09 and 3.84 mg kg-1) and Cu (12.01 and 9.12 mg kg-1) were recorded with the application of 100 % RDN thorough cattle urine. Further it can be seen from the data that DTPA availability of metallic micronutrients were higher in those treatments received cattle urine for either substitution of nitrogen @ 25,50, 75 or 100 percent.