Site-specific nutrient management for maize in Sergio Osmeña, Zamboanga del Norte [Philippines]
2012
Salomes, F.M. | Comamao, J.G. | Mejares, A.P., Department of Aulture-Western Mindanao Integrated Agricultural Research Center, Sanito, Ipil, Zamboanga Sibugay (Philippines)
The Site-Specific Nutrient Management (SSNM) On-Farm Trials (OFT) were conducted in two wet (2009 and 2010) and two dry season croppings (2008-2009 and 2009-2010) in five barangays [villages] (Poblacion Bajo, Poblacion Alto, Biayon, Venus and Situbo) of Sergio Osmeña, Zamboanga del Norte. The study aimed to develop a site-specific fertilizer recommendation based on the principles of SSNM. The bottomline was to improve the productivity and profitability of maize farming in a sustainable approach. The experimental variables were T1-NPK, T2-NP, T3-NK, T4-PK, T5-PK+ Bio-N, T6-PK + OM (Organic Matter), T7-SSNM Prototype, T8-SSNM + Bio-N, T9-SSNM + OM and T10 Farmers' Field Practice (FFP). Each treatment was laid out in a 36 sq m plot, replicated across farms. Agronomic data and crop-cut samples of 4x3 m were taken from each plot to serve as basis for yield computation. Results have shown that the application of OM (Durabloom) gave positive increase in yield during the wet season although not consistent with the dry season results. Based on economic analysis, SSNM + OM (106-9-21 kg NPK/ha + 1.15 t/ha Durabloom) generally gave the highest net benefit and percent (%) Return on Capital (ROC) over other treatments.
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