Asian Science Citation Index is committed to provide an authoritative, trusted and significant information by the coverage of the most important and influential journals to meet the needs of the global scientific community.  
ASCI Database
308-Lasani Town,
Sargodha Road,
Faisalabad, Pakistan
Fax: +92-41-8815544
Contact Via Web
Suggest a Journal
Pakistan Journal of Biological Sciences
Year: 2004  |  Volume: 7  |  Issue: 1  |  Page No.: 45 - 48

Effect of Rice Straw and Lime on Phosphorus and Potassium Mineralization from Cowdung and Poultry Manure under Covered and Uncovered Conditions in the Tropical Environment

U.A. Naher, M.A. Hashem, B.K. Mitra, M.K. Uddin and M.A. Saleque    

Abstract: A pot study was conducted at greenhouse to measure the P and K mineralization rate from fulvic acid with fresh poultry manure, partially decomposed cowdung, rice straw and lime under covered and uncovered condition. The decomposition period was 90 days. Initially the cowdung contain 127 ppm of fulvic acid P and 2.23 meq /100 g of fulvic acid K whereas the poultry manure contain 378 ppm of fulvic acid P and 13.4 meq /100 g of fulvic acid K. The P and K immobilization takes place after 15 days of decomposition and with the passing of time it increased gradually. The lime addition increased P concentration in cowdung treatments and the highest of 1505 ppm of fulvic acid P was recorded at 75 days of decomposition in the covered cowdung + lime treatment. The addition of rice straw increased K concentration in both cowdung and poultry manure treatments but it decreased the mineralization rate. The highest of 67 meq /100 g of fulvic acid K was mineralized at 75 days of decomposition in the uncovered poultry manure + rice straw treatment. The fulvic acid P mineralization was higher in the covered cowdung and poultry manure treatments. The fulvic acid K mineralization was also high in the covered cowdung treatments but in the poultry manure treatments it was higher in the uncovered treatments.

Cited References   |    Fulltext    |   Related Articles   |   Back
   
 
 
 
  Related Articles

 
 
 
 
 
 
 
 
 
Copyright   |   Desclaimer   |    Privacy Policy   |   Browsers   |   Accessibility