National Academy of Agricultural Sciences (NAAS)
|
PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
A net house experiment was conducted during kharif, 2018 at Agricultural Research Institute, Rajendranagar, Hyderabad, Telangana state to know the requirement of N and P to soybean crop in high phosphorus soils. The soils employed for the experiment were sandy clay loam in texture, low in available nitrogen, high in phosphorus and high in potassium status. The experiment was conducted employing 4 levels of N (60, 80, 100 and 120 kg N ha-1) 2 levels of phosphorus (42 and 60 kg P2O5 ha-1) and with three high P soils having 69, 82 and 107 kg native available P2O5 ha-1. Application of nitrogen @ 80 kg ha-1 resulted in higher seed (14.60 g pot-1) and haulm yield (21.03 g pot-1) when compared with 60 kg N ha-1 but it was found to be on par with the application of 100 and 120 kg N ha1.The significant increment in the seed yield of soybean was observed in all the three high P soils with increase in nitrogen levels from 60 to 80 kg N ha-1. Application of phosphorus @ 100% RDP or 70% RDP resulted in on par seed and haulm yield in all three high P soils. Thus reducing the level of phosphorus application from 60 to 42 kg P2O5 ha-1 had no significant effect on the yield of soybean. The yield achieved by application of 80 kg N ha-1 and 100% RDP was found to be on par with the application of 100, 120 kg N ha-1 along with 70 or 100% RDP.
Citations |
 |
 |
 |
 |
