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 |
An incubation experiment was conducted to study the combined effect of various fertilizer doses and Soil Test Crop Response (STCR) based Integrated Plant Nutrient System (IPNS) on potassium (K) fractions in bahour soil series of puducherry. The incubation experiment was carried out with ten treatments and three replications. The soil samples were drawn at 0th, 40th and 80th day of incubation and subjected for analysis of Water Soluble K, Exchangeable K, and Non Exchangeable K fractions. The results revealed that the application of STCR + IPNS – 180 q ha-1 treatment has improved the activities of Water Soluble K (30.57 mg kg-1) and Exchangeable K (146.43 mg kg-1) and application of Farm Yard Manure (12.5 t ha-1) alone increased the activity of Non exchangeable K (381.50 mg kg-1). The simple regression analysis proved that the rate of release was higher in STCR + IPNS treatments for water soluble and exchangeable K whereas it was lower for non exchangeable K. Hence it can be concluded the integrated use of STCR based NPK fertilizer along with IPNS increased the available potassium fractions in soil.
Citations |
 |
 |
 |
 |
