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Evaluation of Planter to Establish Direct Seeded Rice Under Minimum Tillage Practices in Silty Clay Soil in Wet Season

AKM Saiful Islam
Senior Scientific Officer
Farm Machinery and Postharvest Technology Division, Bangladesh Rice Research Institute, Gazipur-1701

Dr. Md. Mosharraf Hossain
ARD, BRRI

Dr. Md. Abu Saleque
Soil Science Division, BRRI

Abstract/ Executive Summary:

This experiment was conducted in the farmer’s field to evaluate the performance of modified planter machine through establishing direct seeded rice during aman season (2010) with four tillage treatments such as: (i) conventional tillage (CT) (ii) strip tillage (ST), (iii) bed formation (BP) and (iv) zero tillage (ZT). In later three treatments, seeding and fertilizer application was done simultaneously in a single pass operation by planter. Flute type seed metering device was tested to study the seed dispensing rate, placement of seed and fertilizers. Minimum tillage saved fuel consumption by almost 20-42%, and could represent a 31-51% cost saving in land preparation compared to CT. Seedling emergence was not affected by tillage options which dictated that seeds were placed at proper depth. Seed meter worked well to dispense rice seed by maintaining actual seed rate. Seeds were not broken due to use of flute type seed metering device. Seedling emergence was not affected by tillage treatment. Yield was not statistically significant under minimum tillage and CT. Strip tillage performed better than the other two minimum tillage methods compared to conventional method. Planter reduced seeding time, saved fuel and labour costs compared to conventional method and helped in timely sowing.

Keywords: Minimum tillage, Strip tillage, Bed planting, Zero tillage, Fuel consumption, Labour, Seedling emergence, Weeding, Yield, Cost

Location: Godagari, Rajshahi

Start Date: 01-07-2010

End Date: 30-06-2011

Program Area: Farm Mechanization

Commodity: Farm machineries, Planter

Objectives:

To evaluate the seed metering device of the planter
To evaluate the agronomic performance of direct seeded rice under minimum tillage practices

Methodology:

The experiment was conducted at the farmer’s field, Kalipur, Digram, Godagari, Rajshahi during wet season. The study area lies at 24°31′57.54″N and 88°22′40.22″E. Agro-climatic (rainfall, evapotranspiration and thermal condition) data were collected from the weather station. The soil type was silty clay. Tillage treatments: (i) Conventional tillage by 2WT (CT); CT required 2 passes dry tillage by 2 wheel tractor (WT) operated rotavator to complete land preparation. (ii) Strip tillage by VMP in single pass operation (ST); (iii) Bed formed by VMP in single pass operation (BP); (iv) Zero tillage by VMP in single pass operation (ZT); Design: The treatments were arranged in a randomized complete block (RCB) design with three replications Seeding BR11 was direct seeded in 17 June 2010. In CT, land was prepared with two passes tillage by two wheel tractor, seeds and fertilizer were hand broadcasted. Tillage, seeding and fertilizer application was done in single pass operation by VMP, ST, BP and ZT. In BP, the width of bed and furrow were 35 cm and 20 cm, respectively. The line to line spacing in CT, ST, BP and ZT were 25, 20, 25 and 20 cm, respectively.

Source of Information: FMPHT Division report, 2010-2011

Article Link (Online Journal):

Funding Source:

1. ACIAR	Budget:
2. Government	Budget:

Total Budget (Tk.) :

Achievement/Findings:

Strip tillage saved 42% fuel seeding operation compared to CT. Grain yield was not significantly affected by tillage treatment in direct seeded rice in aman season. This study also reflected the same trend. Profitability of establishing direct seeded rice in ST was higher than that of planting seeds in CT. Direct seeded rice established in BP was less profitable in High Barind Tract.

Knowledge Management: Report/Proceedings