Performance of upland rice (Oryza sativa L.) as influenced by nk levels and fym substitution

The experiment entitled ‘Performance of upland rice(Oryza sativa L.) as influenced by NK levels and FYM substitution’ was conducted in the field of Sri. Ambu, Akshaya Koolome road, Madikkai during the virippu season of 2015 to study the influence of different levels of N and K on growth, yield attri...

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Bibliographic Details
Main Author: Saravana Kumar M
Other Authors: Jayakrishnakumar V (Guide)
Format: Ph.D Thesis
Published: Padannakkad Department of Agronomy, College of Agriculture 2016
Subjects:
Department of Agronomy
LEADER 04565nam a22001697a 4500
082 |a 630  |b SAR/PE 
100 |a Saravana Kumar M 
245 |a Performance of upland rice (Oryza sativa L.) as influenced by nk levels and fym substitution 
260 |a Padannakkad  |b Department of Agronomy, College of Agriculture  |c 2016 
300 |a 78 Pages 
502 |a MSc 
520 3 |a The experiment entitled ‘Performance of upland rice(Oryza sativa L.) as influenced by NK levels and FYM substitution’ was conducted in the field of Sri. Ambu, Akshaya Koolome road, Madikkai during the virippu season of 2015 to study the influence of different levels of N and K on growth, yield attributes, yield of upland rice and to assess the possibility of substitution of inorganic N by FYM (Farmyard Manure). The experiment was laid out in randomised block design with 10 treatments and 3 replications. The treatments were T 1 - 80 kg N applied as 100% CF (Chemical Fertilizer) and 40 kg K 2 O, T 2 - 80 kg N applied as 60 kg CF, 20 kg FYM and 40 kg K 2 O, T 3 - 80 kg N applied as 40 kg CF, 40 kg FYM and 40 kg K 2 O, T 4 - 100 kg N applied as 100% CF and 50 kg K 2 O, T 5 - 100 kg N applied as 75 kg CF, 25 kg FYM and 50 kg K 2 O, T 6 - 100 kg N applied as 50 kg CF, 50 kg FYM and 50 kg K 2 O, T 7 - 120 kg N applied as 100% CF and 60 kg K 2 O, T 8 - 120 kg N applied as 90 kg CF, 30 kg FYM and 60 kg K 2 O, T 9 - 120 kg N applied as 60 kg CF, 60 kg FYM and 60 kg K 2 O and T 10 - 60 kg N applied as 100% CF and 30 kg K 2 O. A dose of 30 kg P 2 O 5 ha -1 was uniformly applied to all treatments. The results of the experiment revealed that application of 120 kg N ha -1 with 50 per cent substituted as FYM and 60 kg K 2 O ha -1 significantly increased the growth and yield attributessuch as height, leaf area index, number of productive tillers m -2 , panicle weight, panicle length, total spikelets panicle -1 , filled grains panicle -1 and 1000 grain weight. Higher grain and straw yields were obtained with the application of 120 kg N ha -1 with 50 per cent substituted by FYM and 60 kg K 2 O ha -1 and was on par with 120 kg N ha -1 with 25 per cent substituted as FYM and 60 kg K 2 O ha -1 . Application of120 kg N ha -1 with 25 per cent substituted as FYM and 60 kg K 2 O ha -1 registered the highest harvest index.Application of 100 kg N ha -1 as chemical fertilizer and 50 kg K 2 O ha -1 recorded the maximum grain protein content. The uptake of N, P and K differed significantly. The highest uptake of N was recorded by the application of 120 kg N ha -1 with 25 per cent substituted by FYM and 60 kg K 2 O ha -1 . The P uptake was highest for N applied at 100 kg ha -1 with 25 per cent substituted as FYM and 50 kg K 2 O ha -1 . The highest K uptake was recorded by the application of 120 kg N ha -1 with 50 per cent substituted as FYM and 60 kg K 2 O ha -1 . The soil physical properties were favourably influenced by treatments. The lowest bulk density and highestporosity valueswere recorded by the application of 120 kg N ha -1 with 50 per cent substituted as FYM and 60 kg K 2 O ha -1 . The highest water holding capacity was recorded by the application of 100 kg N ha -1 with 50 per cent substituted as FYM and 50 kg K 2 O ha -1 . The available nutrient status of the soil was significantly improved by the application of treatments. At post harvest stage, soil available N and P 2 O 5 were found to be enhanced due to the application of 120 kg N ha -1 with 25 per cent substituted by FYM and 60 kg K 2 O ha -1 . The Highest value for soil available K 2 O was recorded by the application of 120 kg N ha -1 with 50 per cent substituted as FYM and 60 kg K 2 O ha -1 .There was significant increase in the organic carbon status of the soil after the experiment. The application of 120 kg N ha -1 with 50 per cent substituted as FYM and 60 kg K 2 O ha -1 recorded the highest organic carbon status of the soil. The highest net return and benefit cost ratio were registered with application of 120 kg N ha -1 with 25 per cent substituted by FYM and 60 kg K 2 O ha -1 . The results indicated that integrated use of organic and inorganic source of nutrients not only increased the growth, yield attributes and yield of upland rice, but also improved the soil physical, chemical properties and economics of cultivation 
650 |a Department of Agronomy 
700 |a Jayakrishnakumar V (Guide) 
942 |2 ddc  |c TH 
999 |c 154917  |d 154917 
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