Potential Use of Urea Briquettes-Diammonium Phosphate Fertilizer for Rice Crop
Sunil B. H.*
ICAR- National Bureau of Soil Survey and Land Use Planning, Nagpur, Maharashtra (440 033), India
Lal Chand Malav
ICAR- National Bureau of Soil Survey and Land Use Planning, Nagpur, Maharashtra (440 033), India
Sudhakara N. R.
ICAR- Central Institute of Temperate Horticulture, Srinagar, Jammu and Kashmir (190 007), India
DOI: NIL
Keywords: Diammonium phosphate, NP fertilizer, Transplanted rice, Urea briquettes
Abstract
Urea briquettes containing diammonium phosphate (UB-DAP) can be cost effectively produced using a portable fertilizer briquetter on a small scale (200 kg h-1) at the village level and at a price affordable by small rice farmers. Their improved management consists of hand placement of properly sized (weight) UB-DAP (N:P = 4:1) per briquette for every four rice hills, and at 7-10 cm soil depth, on the day of or the day after transplanting using modified 20 × 20 cm spacing (25 hills m-2). This management is simple to adopt, saves up to 50% of the labour normally required for its conventional hand placement, and helps to reduce the lag period of spatial non-availability of DAP-P to the rice plants. The fertilizer use offers women farmers a unique opportunity to play an important role in increasing rice productivity.
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Reference
DeDatta, S, K., 1994. Sustainable rice production: challenges and opportunities. International Rice Communication Newsletter 39, 209-219.
International Fertilizer Development Center (IFDC), 1993. Annual Report Muscle Shoals, Alabama. International Fertilizer Manual, 20-22.
Savant, N. K., 1995. Increased rice production with less fertilizer. Information Centre for Low-External-Input and Sustainable Agriculture (ILEIA). Newsletter 11(1), 24-25.
Savant, N. K., Stangel, P. J., 1990. Deep placement of urea supergranules in transplanted rice: principles and practices. Fertilizer Research 25(1), 1-83.