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Techniques of Efficient Fertilizer Management for Wetland Rice- a Review

Umme Aminun Naher
Principal Scientific Officer
Soil Science Division, BRRI

Qurban Ali Panhwar.
Research Fellow
Universiti Putra Malaysia, malaysia

Radziah Othman
Associate Professor
Land management Department,Universiti Putra Malaysia, malaysia

Shamshuddin Jusop
Professor
Land management Department,Universiti Putra Malaysia, malaysia

Md. Abu Saleque
Principal Scientific Officer
Soil Science Division, BRRI

Abstract/ Executive Summary:

Efficient fertilizer management was proved as a tool for increased crop production in an environmental friendly way. Nutrient response studies determine optimum economic doses for a particular nutrient under specific soil environment. Fertilizers need assessment entails, soil test results and nutrient response models. A few models for fertilizer rate calculation based on soil test values, are briefly discussed in this paper. The test results from site specific nutrient management (SSNM) model showed about 10% grain yield increase compared to that of farmers’ practice in Asia. The results of several studies showed that the use of urea supper granule (USG), leaf color chart (LCC) and Soil Plant Analysis Division: Chlorophyll meter (SPAD) based on N fertilizer management increased N fertilizer use efficiency and reduces environmental risk. The mean yield values of 18 tidal prone sites of Bangladesh showed USG produced an average of 17.84% higher yield of MV rice and saved an average of 32.52% of N over prilled urea. N and K nutrients response in rice were best fitted to quadratic and square root quadratic, while for P response curve it was linear plateau. In clay loam soils of Bangladesh, a linear yield increase was observed from <3 to 6 mg kg-1 available P and then leveled-off up to 17 mg kg^-1. Potassium fertilizer positive response was found up to 80 kg ha^-1 of K in clay loam soils of Bangladesh. It can be concluded that for sustainable, efficient and environment-friendly rice production fertilizer application should be based on plant and soil tests, either it derived from different model or crop nutrient response study.

Keywords: Fertilizer model, Nitrogen, Phosphorus, Potassium, Sulfur, Zinc

Location: BRRI, Gazipur

Start Date: 01-01-2011

End Date: 31-12-2011

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer

Objectives:

To describe efficient ways of using chemical fertilizers for maximal rice production considering the unpredictable climatic condition

Methodology:

This paper reviewed different methods of soil nutrient management techniques for efficient fertilizer handling and maximize rice yield. Different tools for N, P, K fertilizer management such as USG, LCC, SPAD, IRRI model, SSNM, fertilizer spray etc were briefly described.

Source of Information: Aust. J. Crop Sci. 5(12): 1661-1669.(Scopus JCR 0.398).

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Balanced fertilizer application increases crop production and maintained soil fertility that is the primary requirement of sustainable agriculture. Optimum dose derived from soil plant analysis or any nutrient response studies. The rate and method of fertilizer application differed with soil physical, chemical and biological properties. An optimum dose of fertilizer application save environmental pollution and ensures farmer’s profit. Practicing any fertilizer model with target yield is helpful for resource poor farmer. Efficient nutrient management for sustainable rice production guarantees minimum environmental pollution with higher crop productivity.

Knowledge Management: Journal