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Effect of Planting Density on Morphological Features and Yield in ‘baby’ Corn

M.S.A. Fakir
Department of Crop Botany, Bangladesh Agricultural University, Mymensingh

M.A. Islam
Department of Crop Botany, Bangladesh Agricultural University, Mymensingh

Abstract/ Executive Summary:

A field experiment was carried out to investigate the effect of four planting densities (6, 8, 10 and 20 plants/m²) on some important canopy structure and yield (husked fresh cob weight/ha) of 'baby' corn in two varieties (sweet corn and pop corn). Genetic variations existed for morphological characters and yield attributes in the two varieties with the sweet corn variety was shorter, thicker stem with larger cob and more yield in the sweet corn than in the pop corn. Irrespective of varieties, a density of 10 plants/m² produced greater and larger ‘baby’ corn. Results concludes that an optimum density of 10 plants/m² for baby corn yield (c. 7.0 t/ha) was observed in the both varieties under Mymensingh condition (24°75′N 90°50′E).

Keywords: Spacing, Canopy, Young cob, Vegetable, Zea mays

Location: Field Laboratory, Department of Crop Botany, Bangladesh Agricultural University, Mymensingh

Start Date: 00-03-2007

End Date: 00-05-2007

Program Area: Crop-Soil-Water Management

Commodity: Maize

Objectives:

1. To investigate the effect of planting density on morphological features and yield attributes of baby corn in two varieties.

Methodology:

The research work was conducted at the Field Laboratory, Department of Crop Botany, Bangladesh Agricultural University, Mymensingh, between March and May, 2007. Geographically the experimental field is located at 24°75'N latitude and 90°50'E longitude at the elevation of 18m above the sea level. Seeds of BARI sweet corn-1 (SC) and pop corn (PC) were collected from Bangladesh Agricultural Research Institute (BARI), Joydevpur, Gazipur. The soil was fertilized following the manual of BARC. There were eight treatments (2 varieties x 4 densities). The four planting densities were 20 plants/m² (75 x 10 cm); 10 plants/m² (75 x 20 cm); 8 plants/m² (75 x 30 cm); and 6 plants/m² (75 x 40 cm). A distance of 5 cm on all the inner sides of lm x lm was considered as border. Seeds were hand sown at 3-5 cm depth on 1 April 2007. Eight treatments were laid out in a Randomized Complete Block Design (RCBD) with three replications. Block to block and plot to plot distance were l m and 0.75 m, respectively; while the unit plot size was 2.4 x 1.5m. The final harvest was done 10-12 days after silking (45-47 days after sowing). Data were recorded on randomly selected nine plants taking three plants/ replication. Morphological characters of stem, leaf, tassel, cob, yield and yield attributes were recorded. The yield/ha was estimated from the yield/plant. The data were analysed statistically to find out the statistical significance and the mean differences were evaluated by least significance difference.

Source of Information: J. Agrofor. Environ. 2 (2): 9-13, 2008; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Genetic variations existed for morphological characters and yield attributes in the two varieties with the sweet corn variety was shorter, thicker stem with larger cob and more yield in the sweet corn than in the pop corn. Irrespective of varieties, a density of 10 plants/m² produced greater and larger ‘baby’ corn. Results concludes that an optimum density of 10 plants/m² for baby corn yield (c. 7.0 t/ha) was observed in the both varieties under Mymensingh condition (24°75′N 90°50′E).

Knowledge Management: Journal