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Effect of Sowing Date on Green Cob and Fodder Yield of Hybrid Sweet Corn

I. M. Ahmed
SO
Agronomy Division, Gazipur

M. T. Rahman
SO
Agronomy Division, Gazipur

Abstract/ Executive Summary:

The experiment was carried out at BAR farm, Gazipur during two consecutive rabi seasons (2007-2009) to study the effect of sowing date on green cob and fodder yield of hybrid sweet corn. Five sowing dates were Nov. 15, Nov. 25, Dec. 5, Dec 15 and Dec 25 and the test variety was Hybrid 10. Sowing date showed significant influence on green cob and fodder yield in both years. Significantly highest green cob (27.76 t/ha for 2007-08 and 29.19 t/ha for 2008-09) and fodder (35.55 t/ha for 2007-08 and 36.69 t/ha for 2008-09) yield were obtained from November 25 sowing followed by November 15 and December 5 sowings. The lowest green cob (15.72 t/ha, 19.52 t/ha t/ha) and fodder yield (19.08 t/ha for 2007-08 and 23.39 t/ha for 2008-09) were obtained from December 25 sowing. The result indicates that optimal sowing dates for sweet corn could be from November 15 to December 5.

Keywords: Sowing date, Green cob, Fodder yield, Hybrid sweet corn

Location: Joydebpur, Gazipur

Start Date: 00-00-2007

End Date: 00-00-2009

Program Area: Crop-Soil-Water Management

Commodity: Maize

Objectives:

To determine optimum sowing time for successful cultivation of sweet corn.

Methodology:

The experiment was conducted at BARI farm, Joydebpur, Gazipur during rabi seasons of 2007-09. The soil belongs to Chhiata Series under AEZ 28. Five different dates of sowing (November 15, November 25, December 05, December 15 and December 25) were included in the study. The trial was laid out in a randomized complete block design with three replications. The unit plot size was 5 m x 4.5m. Seeds of hybrid sweet corn (Var. Hybrid 10) were sown according to treatments with the spacing of 45 cm x 25 cm. The experimental plot was prepared and labeled properly before sowing. Fertilizers at the rate of 250-90-130-20 kg/ha of N, P, K and S were applied in the form of urea, triple super phosphate (TSP), muriate of potash (MoP) and gypsum, respectively. The full amount of TSP, MoP, Gypsum, and 1/3 of urea were applied as basal during final land preparation. The remaining 2/3 of urea was side dressed at 30 and 55 days after emergence. Weeding, irrigation, and insecticide spraying were done as and when necessary to maintain an optimum growth condition for the crop. The green cobs were harvested at milk stage. The 1st-sown crop (Nov.15) was harvested at 109 DAS while 2nd, 3rd, 4th and 5th sown crops were harvested at 108, 112, 113 and 111 DAS, respectively. At harvest, 10 plants were randomly selected for collecting data on yield contributing characters and yield was recorded plot wise. Analysis-of-variance (ANOVA) was conducted on the data for both years and least significant difference (LSD) tests were used (Cochran and Cox, 1957) to determine differences among sowing dates using Mstat-C statistical software.

Source of Information: Annual Report, Agronomy Division 2008-2009

Article Link (Online Journal):

Funding Source:

1. Asian Development Bank

Budget: 15,000/-

Total Budget (Tk.) : 15,000/-

Achievement/Findings:

Highest fresh green cob yields were obtained from November 15 to December 5 sowing in Gazipur region. November sown crop got comparatively low temperature than other sowing dates, that favors it longer vegetative as well as reproductive stage and ultimately gave better green cob and fodder yield of hybrid sweet corn. The result indicates that optimal sowing dates for sweet corn could be from November 15 to December 5.

Knowledge Management: Report/Proceedings