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Synchronization of Nitrogen Application with Growth Stages of Maize

M. R. A. Mollah
Agricultural Research Station, Bangladesh Agricultural Research Institute (BARI), Seujgari, Bogra-5800

M. Asaduzzaman
Agricultural Research Station, BARI, Shibpur, Narsingdi

M. A. Akther
Agricultural Research Station, Bangladesh Agricultural Research Institute (BARI), Seujgari, Bogra-5800

K .M. Khalequzzaman
Regional Agricultural Research Station, BARI, Ishurdi, Pabna, Bangladesh

Abstract/ Executive Summary:

The experiment was conducted to verify the effect of nitrogen (N) application at different growth stages of maize at Multilocation Testing (MLT) site sherpur under On Farm Research Division, BARI, Bogra during 2005-06. Three urea application treatments were T₁ (1/3 as basal + 1/3 at 8 leaves stage + 1/3 at tasseling stage), T₂ (30 % as basal + 70% at 8 leaves stage) and T₃ (50% as basal and 50% at 8 leaves stage). Plant height, no of filled grains/cob, 100 seed weight, grain yield and straw yield were highest in T₂ compared to others. On the other hand, the highest no of cob was found in T₁ and unfilled grain/cob in T₃. There was no significant difference for grain yield among the treatments: But the comparatively higher grain yield (8.27 t/ha) was obtained from treatment T₂. The present results clearly indicate that in hybrid maize urea should be applied either 30% or 50% as basal and rest 70% or 50% at 8 leaves stage instead of 1/3 as basal +1/3 at 8 leaves stage + 1/3 at tasseling stage.

Keywords: Yield, Synchronization of N application, Growth stage

Location: Multilocation Testing (MLT) site at Sherpur, Bogra under On Farm Research Division, BARI

Start Date: 00-12-2005

End Date: 00-04-2006

Program Area: Crop-Soil-Water Management

Commodity: Maize

Objectives:

To verify the effect of nitrogen (N) application at different growth stages of maize.

Methodology:

The experiment was conducted at farmers’ field under MLT site sherpur, Bogra during 2005-06. Two new nitrogen fertilizer application methods were tested against the present recommendation. T₁was the present recommendation of N fertilizer application method where N was applied as basal and two top-dress at 8 leaves stage and at tasseling stage. T₂ was the new one where N was applied 30% as basal and 70% as top-dress at 8 leaves stage. T₃ was another new one where N was applied 50% as basal and 50% as top dress at 8 leaves stages. The experiment was designed in RCB with 4 dispersed replications. Seeds of maize were sown at 6-7 December, 2005 maintaining the spacing 75 cm X 25 cm. Fertilizers nutrients were used @ 253-51-110-46-5.4-1.25 kg N-P-K-S-Zn-B and 6 ton cowdung per hectare. Entire amount of P, K, S, Zn, B and cow dung were applied as basal during final land preparation. N was applied as treatment concerned. Two irrigations were applied at January 9 and February 26, 2006. Other intercultural operation was done as and when necessary. The hybrid maize variety was pacific-II and the crop was harvested at 24-26 April, 2006. Data on different parameters were collected and analyzed statistically following Duncan’s New Multiple Range Test (DMRT).

Source of Information: Int. J. Sustain. Crop Prod. 2(3):53-55, 2007

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

In hybrid maize urea should be applied either 30% or 50% as basal and 70% or 50% at 8 leaves stage instead of 1/3 as basal + 1/3 at 8 leaves stage + 1/3 at tasseling stage. Apparently the present findings could save labor cost and particularly it also relieves the farmers from health hazard of applying urea at tasseling stage.

Knowledge Management: Journal