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Articles by J. Maheswari
Total Records ( 3 ) for J. Maheswari
  J. Maheswari , N. Maragatham and G. James Martin
  A Field experiment was conducted at wetlands (Vertic Ustochrept), Agricultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore during Kharif (June to October) season of 2005, to ascertain the optimum irrigation method and nitrogen dose to enhance aerobic rice (Oryza sativa L.) productivity with PMK 3 cultivar. Four irrigation regimes viz., irrigation at IW/CPE ratio of 0.8, 1.0, 1.2 and micro sprinkler irrigation once in three days, four N levels viz., 100, 125, 150 and 175 kg ha-1 were tested in strip-plot design with three replications. Irrigation at 1.2 IW/CPE ratio recorded significantly higher crop growth rate and yield with no moisture stress, minimal proline accumulation and sterility coefficient. N levels followed the quadratic response (R2>0.973), with 150 and 175 kg N ha-1 produced on par growth and yield. Hence, irrigation at 1.2 IW/CPE ratio with 150 kg N ha-1 will be optimum to realise the maximum productivity under aerobic rice cultivation.
  J. Maheswari , Jayakumar Bose , S.P. Sangeetha , S. Sanjutha and R. Sathya Priya
  Field experiment has been conducted at wetlands (Vertic ustochrept), Agricultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore during Kharif (June to October) season of 2005, to ascertain the optimum irrigation method and nitrogen dose to enhance aerobic rice (Oryza sativa L.) productivity with PMK 3 cultivar. Four irrigation regimes viz., irrigation at IW/CPE ratio of 0.8, 1.0, 1.2 and micro sprinkler irrigation once in three days, four N levels viz., 100, 125, 150 and 175 kg ha-1 were tested in strip-plot design with three replications. Irrigation regimes and N levels increased the Leaf Area Index (LAI) and soluble protein content in a dose response manner. Irrigation treatments did not affect the chlorophyll content. However, N levels increased the chlorophyll content. Irrigation at 1.2 IW/CPE ratio recorded significantly minor proline accumulation, crop growth rate and yield with less moisture stress. N levels (150 and 175 kg N ha-1) produced on par growth and yield. Hence, irrigation at 1.2 IW/CPE ratio with 150 kg N ha-1 will be optimum to realise the maximum productivity under aerobic rice cultivation.
  R. Sathya Priya , M. Mohammed Yassin , J. Maheswari and S.P. Sangeetha
  A field experiment has been conducted at garden lands (Vertic ustochrept) of Agricultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore during Kharif (June to October) season of 2004 to ascertain the optimum nutrient requirement for groundnut+sunflower intercropping system under irrigated conditions with replacement series to enhance the productivity of groundnut+sunflower inter cropping system. Groundnut was raised as main crop and sunflower was planted as intercrop with 3:1 ratio. There were ten treatments viz., control (T1), 100% Recommended Dose of Fertilizers (RDF) to main and inter crops (T2), 100% RDF to main crop+no fertilizer to intercrop (T3), 100% RDF to main crop+100% RDF to intercrop (T4), 100% RDF to main crop+50% RDF of intercrop (T5), T3+50% RDF to intercrop as basal+50% N to intercrop as top dress (T6), T3+50% N to intercrop as basal (T7), T3+100% PK of intercrop as basal+50% N as basal+50% N as top dress (T8), pure crop of sunflower with RDF (T9) and pure crop of groundnut with RDF (T10) were tested in randomized block design with three replications. All the above fertilizer treatments were imposed based on the area. 100% RDF to groundnut (main crop)+100% RDF P and K to sunflower (intercrop)+50% of N basal and 50% of N as top dressing to sunflower increased yield attributes, yield and oil contents of groundnut and sunflower. So, 100% recommended doses of NPK fertilizer to groundnut+100 RDF PK to sunflower with 50% N as basal and 50% (T8) as top dressing will be optimum to realize maximum yield under groundnut+sunflower intercropping system in irrigated conditions.
 
 
 
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