2003 - Site-specific Nutrient Management Extension Project for
Rice 2002 - Site-Specific Nutrient Management Extension Project
2001 - Site-Specific Nutrient Management in Rice Site-Specific
Nutrient Management Extension Project for Rice, 2003 This
extension effort is aimed at testing technology developed in the
Reaching Towards Optimum Productivity (RTOP) project (Details in
Southeast Asia-01) for improving nutrient management in rice in
North Sumatra and Central Java. The first crops were planted in
2001. Verification of this technology is needed to convince
scientists of its validity before it is widely disseminated to
policy-makers, local government officials, and farmers.
Evaluation of the site-specific nutrient management (SSNM)
technique continued in Asahan and Simalungun Districts (North
Sumatra). In these two districts, a complete treatment of
nitrogen (N), phosphorus (P), and potassium (K) included 115 kg
N (10 kg N from ammonium sulfate and 105 kg N from urea), 36 kg
P2O5, and 50 kg K2O to produce 5