Phenology and Nutrient Studies of Rice (Oryza sativa L.) as Influenced by Different Crop Establishment Methods and Irrigation Scheduling
P. Nandini *
Department of Agronomy, College of Agriculture, Professor Jayashankar Telangana Agricultural University, Rajendranagar, Hyderabad-500030, India.
K. Avil Kumar
Department of Agronomy, College of Agriculture, Professor Jayashankar Telangana Agricultural University, Rajendranagar, Hyderabad-500030, India.
M. Goverdhan
Department of Agronomy, College of Agriculture, Professor Jayashankar Telangana Agricultural University, Rajendranagar, Hyderabad-500030, India.
T. L. Neelima
Department of Agronomy, College of Agriculture, Professor Jayashankar Telangana Agricultural University, Rajendranagar, Hyderabad-500030, India.
K.Chandrasekar
Regional Centre, National Remote Sensing Centre, Balanagar, Hyd-500037, Telangana, India.
T. Ram Prakash
Deparment of Soil Science and Agricultural Chemistry, College of Agriculture, Professor Jayashankar Telangana Agricultural University, Rajendranagar, Hyderabad-500030, India.
*Author to whom correspondence should be addressed.
Abstract
The investigation on influence of different crop establishment methods and irrigation scheduling on phenology and nutrient studies of rice (Oryza sativa L.) was carried out in sandy clay soils at Agriculture Research Station, Kampasagar, Nalgonda district for two kharif seasons of 2021 & 2022. The experiment was laid out in split plot design with three main plots and 3 sub-plots replicated thrice. Phenological parameters like days to 50% flowering and maturity has a significant impact among establishment methods in which dry direct seeded rice with drum seeder (M1) recorded less number of days compared to manual transplanted puddled rice (M3). Total nitrogen, phosphorus and potassium content was non significantly increased with wet seeded rice with drum-seeder (M2) followed by manual transplanted puddled rice (M3) and dry direct seeded rice with seed drill (M1) method. Unlike that of nutrient content, uptakes have shown significant difference among establishment methods. However, irrigation scheduling treatments and interaction effect has found to be non-significant for both the years of study. In comparison with first year study, second year recorded higher values which may be due to better favourable condition that attributed better performance of crop.
Keywords: Phenology, alternate wetting and drying, dry direct seeded rice, nutrient uptake and establishment methods