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A Comparative Study Between Manual and Mechanical Seeding and Weeding on Growth and Yield of Hybrid Maize

M.T. Rahman
SO
Agronomy Division, Gazipur

M. A. H. S. Jahan
SO
Agronomy Division, Gazipur

Abstract/ Executive Summary:

The efficiency of BARI developed power tiller operated BARI inclined plate seeder, bed making inclined plate seeder and weeder were tested against existing seeding and weeding methods in maize cultivation during Rabi season of 2005-2006 at Joydebpur, Gazipur. Three seeding methods and four weed control method were used as treatment variables. Weeding methods exerted significant effects on weed flora, fresh and dry weight of weeds. Hand weeding at 25 DAE showed better weed control efficiency (86%) over no weeding. Significantly the highest maize grain yield (8.18 t/ha) was obtained when the plots were weeded by hand at 25 DAE followed by herbicide application at 25 DAE (7.74 t/ha). Seeding methods did not show any significant variation in respect of yield attributes and yield of maize. Highest BCR was recorded when maize was seeded by power tiller operated BARI inclined plate seeder (2.22) and weeded by BARI weeder (2.28). The results revealed that power tiller operated BARI inclined plate seeder in association with BARI weeder is economically profitable for seeding and weeding of hybrid maize production.

Keywords: Manual and mechanical seeding, Weeding, Growth, Yield, Maize

Location: Joydebpur, Gazipur

Start Date: 00-00-2005

End Date: 00-00-2006

Program Area: Farm Mechanization

Non-commodity: Efficiency

Objectives:

To compare the efficiency of BARI developed IPS and dry land weeder with existing seeding and weeding methods for economic production of hybrid maize.

Methodology:

This experiment was conducted at the research station of Bangladesh Agricultural Research Institute, Joydebpur, Gazipur during rabi season of 2005-06. The soil of the study area is slightly acidic in reaction (pH 6.4) with contents of 1.04% organic matter, 0.036% total nitrogen, 8.02 ppm available phosphorus, 0.18 meq/100 g soil exchangeable K and 10 ppm available sulphur respectively. The experiment was laid out in a split plot design with three replications. Three seeding methods- i) Seeding by hand ii) Seeding by power tiller operated BARI inclined plate seeder iii) Seeding by power tiller operated BARI inclined plate seeder along with bed making device were accommodated in the main plot and four weeding methods- i) No weeding, ii) One hand weeding at 25 DAE, iii) Weeding by BARI weeder at 25 DAE and iv) Weeding by herbicide U-46 at 25 DAE in the sub-plots. Fertilizers at the rate of 250-50-110-45-5-1 kg ha^-1 N P K S Zn B were applied as Urea, TSP and MP, Gypsum, Zinc Sulphate and Boric acid, respectively. One third of the urea and all others fertilizers were applied during final land preparation. Seeds of maize (cv. Pacific 984) were sown on 5 December, 2005 with 75 cm X 25 cm spacing. Remaining 2/3 Urea were top-dressed in two equal splits at 30 and 60 DAE followed by irrigation. A light irrigation by sprinkler was given after sowing for uniform emergence of the crop. Plant height and total dry matter (TDM) were collected from 30 DAE to maturity at 20 days interval. Weed samples were collected using 50cm X 50cm quadrate from randomly selected two places from each plot at 25 DAE and 20 days after treatment imposing. Number, fresh and dry weight of weeds was recorded. Weed control efficiency (WCE) was calculated according to Varshney (1999) using following formula. WCE (%)= (A-B/A) x 100 Where, A = Dry weight of weeds in no weeding plots and B = Dry weight of weeds in treated plots. The crop was harvested at 140 DAE. Yield and yield contributing characters were recorded and analyzed statistically and mean separations were done by DMRT.

Source of Information: Annual Report Agronomy Division 2005-2006, BARI

Article Link (Online Journal):

Funding Source:

1. Asian Development Bank

Budget: 10,000/-

Total Budget (Tk.) : 10,000/-

Achievement/Findings:

The highest maize grain yield (8.18 t/ha) was obtained when the plots were weeded by hand at 25 DAE followed by herbicide application at 25 DAE (7.74 t/ha). Seeding methods did not show any significant variation in respect of yield attributes and yield of maize. Highest BCR was recorded when maize was seeded by power tiller operated BARI inclined plate seeder (2.22) and weeded by BARI weeder (2.28). The results revealed that power tiller operated BARI inclined plate seeder in association with BARI weeder is economically profitable for seeding and weeding of hybrid maize production.

Knowledge Management: Report/Proceedings