International Rice Congress 2023
Published October 16, 2023 | Version v1
Conference paper Open

Fertile Soils: Performance of Fertilizers in Rice Production in the Philippines

Authors/Creators

  • 1. Philippine Rice Research Institute, Science City of Muñoz, Philippines
  • 2. Philippine Rice Research Institute, Los Baños, Philippines
  • 3. Philippine Rice Research Institute, Batac, Philippines
  • 4. Philippine Rice Research Institute, San Mateo, Philippines
  • 5. Philippine Rice Research Institute, Murcia, Philippines
  • 6. Philippine Rice Research Institute, RTRomualdez, Philippines
  • 7. Philippine Rice Research Institute, Midsayap, Philippines

Description

Achieving balanced nutrition in rice production can be challenging but it can be done with the use of combination of different sources of nutrients essential to the rice plant. PhilRice evaluated different fertilizer products approved by the Fertilizer and Pesticide Authority across six (6) agroclimatic zones for four (4) seasons. We aim to generate information for a profitable, sustainable, and environment-friendly nutrient management package of technologies. The nutrient management protocols were grouped into: inorganic (NM1), inorganic + biostimulants (NM2), inorganic + biostimulants and biofertilizers (NM3) with PhilRice nutrient management protocol (control) and farmers' practice (FP) as comparison. Yield during the dry season (DS) was high in NM3 (7.02t/ha) followed by NM1 (6.45t/ha) and NM2 (6.29t/ha) compared to control (5.99t/ha) and FP (5.33t/ha). However, in the wet season (WS), no significant yield differences were obtained across nutrient management protocols (5.24-5.58t/ha) with NM3 obtaining the highest yield. Fertilizer costs during the DS was highest in NM2 and lowest in FP; and the WS highest cost was recorded in FP and lowest in NM1. Average cost of producing paddy rice was high in FP in both seasons (P10/kg) and lowest in NM3 (P7.72-8.53/kg). In addition, net income was highest in NM3 and lowest in FP (both seasons). NM2 and NM3 used a combination of soil-applied fertilizers single elements or combination (nitrogen, P2 O 5 , K2 O, S 2 O 4 , zinc) and foliar-applied fertilizers single or combination elements (calcium, copper, magnesium, manganese, zinc, sulfur, boron, iron, molybdenum). Other related products applied include growth promoters such as microorganisms, biostimulants, fulvic acid, humic acid, organic matter, vitamin B complex, among others. The application rates and times were variable depending on the location.

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