Effect of Different Rice Establishment Methods on Soil Nutrient Status and Carbon Stock in Paddy Growing Soils of Jagtial, Telangana, India
D. Amulya *
Department of Soil Science and Agricultural Chemistry, Agricultural College, Polasa, Jagtial, Professor Jayashankar Telangana State Agricultural University, Hyderabad, Telangana, India.
A. Krishna Chaitanya
Department of Soil Science and Agricultural Chemistry, Regional Sugarcane & Rice Research Station Rudrur, Nizamabad, Professor Jayashankar Telangana State Agricultural University, Hyderabad, Telangana, India.
R. Sai Kumar
Department of Soil Science and Agricultural Chemistry, Agricultural College, Polasa, Jagtial, Professor Jayashankar Telangana State Agricultural University, Hyderabad, Telangana, India.
E. Rajanikanth
Department of Agronomy, NARP RARS, Polasa, Jagtial, Professor Jayashankar Telangana State Agricultural University, Hyderabad, Telangana, India.
*Author to whom correspondence should be addressed.
Abstract
The study was conducted to know the nutrient status, yield, straw and harvest index in 4 different cropping systems viz., (i) manual transplanting; (ii) dry direct seeding; (iii) drum seeding and (iv) machine transplanting 120 soil samples were analysed, 30 from each establishment method. The soil fertility status from different establishment methods was studied by analysing the samples for pH, EC, bulk density, organic carbon, available nitrogen, phosphorous, potassium, iron, zinc, total organic carbon and carbon stock. The study revealed that there is a significant difference in bulk density ranged high in machine transplanting (1.48 Mg m-3) and low in dry direct seeding (1.45Mg m-3). pH of soils was neutral to slightly alkaline in nature and iron content of soils ranged from 5.75 to 8.97 mg kg-1.
Keywords: Paddy, survey in different rice establishment methods, soil nutrient status, yield, straw, harvest index