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 field experiment was conducted with maize-groundnut cropping sequence. Rock phosphate and its combination with SSP were used as nutrient sources during Rabi 2016-17 (maize taken up in Kharif 2016). The study was carried out in the Central Farm, OUAT with the help of a field experiment laid out in Randomized Block Design with seven treatment T1 Control, T2 100% P(RP),T3 100% P(SSP), T4 75% P(RP) + 25% P(SSP), T5 50% P(RP) + 50% P(SSP), T6 25% P(RP) + 75% P(SSP) and T7 100% P(SSP) + Lime @ 0.2 LR and replicated in thrice. The soil of the experimental field was loamy acidic (pH 5.2) having Bray’s P of 15.68 kg ha-1. The different combinations with SSP were evaluated for their effectiveness in the cropping system. In addition to P applied @ 50kg P2O5 ha-1 and 40 kg P2O5 ha-1 to maize and groundnut crops respectively from various sources, N was added @ 150kgha-1 to maize and 20 kgha-1 to groundnut crop in the form of urea and K @50 and 40 kg K2O ha-1 was added to maize and groundnut crop in the form of MOP. Highest maize grain yield (5.03 t ha-1) was produced due to addition of 100%P (SSP) +Lime @ 0.2LR and highest pod yield (2.77 t ha-1) of groundnut was also due to 100%P (SSP)+Lime@0.2LR. The total heterotrophic bacteria population (c.f.u. X 104 g-1soil) was the highest in 100%P (SSP) + Lime@0.2LR in all the growth stage except flowering. Phosphorus solubilising bacteria population (c.f.u. X 104 g-1soil) were maximum at pod formation stage in 100%P(SSP)+ Lime@0.2LR and 100% P(RP) treatment but at harvest the treatment received 100%P(SSP)+ Lime @0.2LR had the highest population.
Citations |
 |
 |
 |
 |
