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Effects of Fertilizers Under Different Levels of Irrigation on the Yield of Wheat

Md. Saidul lslarn
Thana Extension Officer
Kazipur, Pabna, Bangladesh.

A.M. Shamsuddin
Professor
Department of Agronomy, Bangladesh Asricultural University, Mymensingh, Bangladesh.

Abstract/ Executive Summary:

The experiment was conducted at the Bangladesh Agricultural University Farm, Mymensingh to evaluate the effect of irrigation and fertilizers on the performance of a high yielding Mexican variety of wheat, Inia-66. The irrigation levels were, zero irrigation, one irrigation, two irrigation and three irrigation, and the fertilizer levels were, 56-56- 28, 84-84-56 and 112-112-84 kg (N-P₂0₅-K₂0) per hectare. The highest grain and straw yields were obtained from 3 irrigation which was, although, identical with 2 irrigation. The highest dose of fertilizer 112-112-84 kg (N-P₂0₅-K₂0) per hectare gave the highest grain and straw yields. Highest grain yield of wheat 3416.66 kg/ha (36.95 md/acre) Was produced when the crop was fertilized with 112-112-84 kg (N-P₂0₅-K₂0) per hectare and the crop was irrigated 3 times. The same rate of fertilizer produced identical grain yield under two irrigation. So number of optimum irrigation would be decided by the principle of marginal returns.

Keywords: Fertilizer, Irrigation, Wheat, Yield

Location: Bangladesh Agricultural University Farm, Mymensingh.

Start Date: 00-11-1974

End Date: 00-03-1975

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer

Objectives:

To find out optimum levels of NPK fertilizers and irrigation for wheat.

Methodology:

The experiment was conducted at the Bangladesh Agricultural University Farm, Mymensingh during the period from November 1974 to March 1975 to evaluate the effect of irrigation and fertilizer on the performance of wheat cultivar India-66. The experiment was laid out in a split-plot design with the four levels of irrigation; zero irrigation, one irrigation 55 days after sowing, two irrigation 24 and 55 days after sowing and three irrigation 24, 55 and 85 days after sowing, and three levels of fertilizer; 56-56-28 (N-P₂0₅-K₂0), 84-84-56 (N-P₂O₅-K₂⁰) and 112- 112-84 (N-P₂0₅-K₂O) kg hectare. The irrigation treatments were assigned to the main plots and the fertilizer treatments to the unit plots at random. The experiment was replicated four times. The net area of each unit plot was 12 square metres. All the phosphatic and potassic fertilizers and half of nitrogenous fertilizer were applied in each unit plot at the time of final preparation of the laud. The rest half of nitrogenous fertilizer was applied in two equal splits 24 and 64 days after sowing. The crop was planted in lines on the 18th November, 1974 and harvested on the 3rd March, 1975. Data on individual plant characters were recorded from ten randomly selected plants within each unit plot.

Source of Information: Bangladesh Journal of Agriculture, Vol-3, No-2, pag:358-361, Dec 1978

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The result of the present study indicated very well the effect of irrigation and fertilizer on the yield and growth of wheat. Highest grain yield of wheat 3416.66 kg/ha (36.95 md/acre) was produced when the crop was fertilized with fertilizer rate of 112-112-84 kg (N-P₂0₆-K₂0) per hectare and the crop was irrigated 3 times. But with same rate of fertilizers statistically identical yield of 2916.66 kg/ha (31.54 md/acre) of grain was produced when the crop was irrigated twice. Now Whether 2 or 3 irrigation would be said to be the optimum for crop that would be decided by the application of marginal return principle i.e., by comparing added return of yield with added cost of one extra irrigation.

Knowledge Management: Journal