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Evaluation of Multi Nutrient Fertilizers for Wetland Rice

A. T. M. A. Choudhury
Soil Chemistry Division, Bangladesh Rice Research Institute, Gazipur - 1701, Bangladesh.

S. K. Zaman
Soil Chemistry Division, Bangladesh Rice Research Institute, Gazipur - 1701, Bangladesh.

N. I. Bhuiyan
Soil Chemistry Division, Bangladesh Rice Research Institute, Gazipur - 1701, Bangladesh.

Abstract/ Executive Summary:

Three grades of multination fertilizers were field tested in wetland rice culture at Bangladesh Rice Research Institute (BRRI) farm during Aus and Transplant Aman seasons, 1991 using randomized complete block design with a view to evaluate their effectiveness against straight fertilizers. Results showed that multi-nutrient fertilizers performed similarly as straight fertilizers in increasing grain yield of rice. Mineral nutrition of and nutrient removal by rice plants were also almost similar irrespective of fertilizer sources.

Keywords: Rice, Soil, Wetland rice culture, Fertilizer

Location:

Start Date: 00-00-1991

End Date: 00-00-1991

Program Area: Crop-Soil-Water Management

Non-commodity: Performance

Objectives:

To evaluate their efficiency of advantages and disadvantage relative to straight fertilizers and
To evaluate the efficiency of mixed /complex fertilizers relative lo straight ones in wetland rice culture.

Methodology:

Two field experiments were conducted in Grey-Terrace soil (C.hhlata series) of Bangladesh Rice Research Institute (BRRI) farm Joydebpur during 1991 Aus (April - August) and Transplant Aman (July-December) seasons. The soil of the experimental field was texturaly clay having pH 6.2, organic C 1. 13%. total N 0.09%, available P (Olsen ) 6.5 pp m, exchangeable K 0.21 me/ 100 g. available S 20 ppm and cation exchange capacity (CEC) 20 : 100g. Analyses of the soil were done following some standard procedures. The fertilizer sources used in the trials were: (1) Mixedfertilizer (7.58-14.44-11.53-4.44% N-P205-K20-S respectively). (2) Complex fertilizer (16- 16-16% N-P205- K20 respectively). (3) Complex fertilizer (23-23% N-P205 respectively) and (4) Straight fertilizers (Urea, TSP, MP and Gypsum). Mixed fertilizer was produced and supplied by Chittagong urea factory. Complex fertilizers were produced in the Netherlands and supplied by local agent. Effort was taken to maintain a single rate of nutrients for each of N (70 kg/ ha). P (20 kg/ ha). K (30 kg/ ha) and S (13 kg/ ha). But the doses varied slightly due lo the composition of fertilizer materials. There were six treatments including one absolute control. The experiment was laid out i n a randomized complete block design with 4 replications. Full dose of P, K and S was applied before transplanting at final land preparation. Nitrogen was applied in 3 splits incase of treatments T₁ and T₅ in 2 splits incase of treatments T_2, T₃ and T₄. In Aus season 30 day-old-seedlings of a modern variety rice, BRI (Chandina) were transplanted on the 22nd May, 1991 with a sp.acing of 20 cm X 20 cm. Necessary intercultural operations were done and supplementary irrigation was provided as and when required. Rice plants were harvested at maturity for grain and straw yields on the 22nd August 1991. During Tranplant Aman season. 50 day old-seedlings of BR22 (Kiron), aphotoperlod sensitive variety were transplanted on the 8th September,1991 in the same plot after harvesting Aus crop. A photoperiod sensitive variety was selected and relatively older seedlings were used In Transplant A ma n season because of delay in transplanting time. Fertilizer doses and application schedules were same In both the seasons. Grain and straw samples were analysed for total N, P and K concentrations following some standard procedures. Sulphur content of the plant samples were also analysed following the method. The data were analysed as per standard statistical procedures.

Source of Information: Bangladesh J. Soil Sci. 23 (1&2), 23 - 29, 1992, ISSN 0253-5440

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

This study indicates that multinutrient fertilizers either mixed or complex are equally effective as straight fertilizers in increasing grain yield of wetland rice. These fertilizer materials may be good alternatives of straight fertilizers for balanced fertilizer application al farmer's level. Results showed that multinutrient fertilizers performed similarly as straight fertilizers in increasing grain yield of rice. Mineral nutrition of and nutrient removal by rice plants were also almost similar irrespective of fertilizer sources.

Knowledge Management: Journal