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Effects of Different Sources and Levels of Nitrogen Fertilizer on Yield and Nutrient Contents of Maize (zea Mays) Forage

M. J. Khan
Professor
Department of Animal Nutrition, Bangladesh Agricultural University, Mymensingh-2202.

M. Shahjalal
Professor
Department of Animal Nutrition, Bangladesh Agricultural University, Mymensingh-2202.

M. E. Haque
Assistant Professor
Department of General Animal Science and Nutrition, Sylhet Govt. Veterinary College, Sylhet-3100.

M. A. Hashem
Associate Professor
Department of Animal Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.

Abstract/ Executive Summary:

An experiment was conducted to study the effect of different sources and levels of N-fertilizer on yield, chemical composition and in vitro digestibility of maize forage. The treatments were designed as To (control), T₁(75 kg N from urea/ha), T₂ (l00 kg N from urea/hay), T₃ (125 kg N from urea/hat, T₄ (75 kg N from cowdung/ha), T₅ (100 kg N from cowdung/ha), and T₆ (125 kg N from cowdung/ha). Application of 100 and 125 kg urea N/ha resulted higher (P<0.0 1) yields of forage estimated as green; DM, OM and CP. No significant (P<0.05) variation was observed among treatments for plant leaf and stem weight and the contents of CP, CF, EE and NFE but significant difference was observed for DM (P<0.05) OM and Ash (P<0.01). The digestibility of organic matter declined with increasing level of N application irrespective of sources. The digestible and metabolizable energy contents of maize fodder were not influenced significantly with increased level of nitrogen application. Maize fodder may be cultivated with the application of 100 kgN/ha from urea.

Keywords: Maize forage, Nitrogen, Urea, Cowdung.

Location: Animal Nutrition field laboratory of Bangladesh Agricultural University, Mymensingh.

Start Date: 00-12-1995

End Date: 00-02-1996

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer

Objectives:

To study the effect of different sources and levels of N- fertilizer on yield, chemical composition and in vitro digestibility of maize forage.

Methodology:

The experiment was conducted in the Animal Nutrition field laboratory of Bangladesh Agricultural University, Mymensingh, using different sources and levels of N-fertilizer. The seeds of fodder maize "Savar-I" was procured from BADC, Mymensingh and used for this study. The experiment was laid out in completely randomized design. The land was well prepared by traditional ploughing and was levelled by subsequent harrowing and laddering. The experiment was conducted for 82 days between December 1995 to February 1996. The total land was divided into 28 plots each having (4m x 4m) size. The experimental treatments were designated as T_o (control), T₁(75 kg N from urea/ha), T₂ (l00 kg N from urea/ha, T₃ (125 kg N from urea/ha), T₄ (75 kg N from cowdung/ha), T₅, (l00 kg N from cowdung/ha) and T₆ (l25 kg N from cowdung/ha). Triple super phosphate (TSP) and murate of potash (MP) at the rate of 60 kg/ha and 40 kg/ha, respectively were applied as a basal dose at the time of land preparation and urea and cowdung were applied at the time of final preparation of the land. Seeds were sown in rows at the rate of 75 kg/ha with a row spacing of 15 cm and plant spacing 5 cm. The maize plants were harvested after 82 days and fresh weight of the plant was recorded plot wise. Representative samples during the harvest of the plants were collected from each treatment group for analysis. Total dry matter in green forage was determined by drawing a composite sample from the harvest of individual plots. The proximate composiion of the plants for individual plots were. determined following the methods A0AC (1990).Data obtained for different parameters were analyzed statistically following the method of Steel and Torrie (980). Significant differences among the treatments were further tested using LSD method.

Source of Information: Bang. J. Anim. Sci. 2005, 34 (l & 2) : 55-61 (ISSN 0003-3588)

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The digestibility of organic matter declined with increasing level of N application irrespective of sources. The digestible and metabolizable energy contents of maize fodder were not influenced significantly with increased level of nitrogen application. Maize fodder may be cultivated with the application of 100 kgN/ha from urea.

Knowledge Management: Journal