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Effects of Minimum Tillage on Fuel Consumption and Economics in Blackgram (vigna Mungo (l.) Cultivation

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

Md. Enamul Haque
iDE, Bangladesh

Abstract/ Executive Summary:

Field capacity of 2WT in CT was the highest and the lowest was of VMP in ST, BP and ZT. Among the minimum tillage, field capacity of SPST and ST was the highest compared to ZT and BP. Fuel consumption was the highest in CT (40 l ha-1) followed by BP (37 l ha-1), ZT (32 l ha-1), SPST (31 l ha-1) and ST (29 l ha-1). Carbon dioxide emission was the highest in CT (105 kg ha-1) and the lowest in ST (75 kg ha-1). CT (41 man-hr ha-1) showed significantly higher labour requirement and ST (19 man-hr ha-1) showed lowest labour requirement in land preparation. Highest labour was saved in SPST and ST by VMP. Highest land preparation cost was obtained in CT (5002 Tk ha-1) and lowest in ST (3303 Tk ha-1). Emergence rate was highest in ZT followed by SPST, ST, BP and CT. Blackgram yield was statistically similar among all tillage methods. CT obtained the highest costs with Tk 28420 ha-1 and SPST obtained in the lowest cost with Tk 39020 ha-1. Highest BCR was observed in minimum tillage operation (1.31-1.33) compared to CT (1.25).

Keywords: Planter, Minimum tillage, Strip tillage, Zero tillage,Conventional tillage, Blackgram

Location: Rajshahi

Start Date: 01-01-2010

End Date: 30-06-2011

Program Area: Crop-Soil-Water Management

Commodity: Black gram

Objectives:

To compare the fuel consumption and production costs of minimum tillage systems compared with conventional tillage in blackgram cultivation.

Methodology:

The experiment was conducted in High Barind tract (HBT), Godagari, Rajshahi. Five tillage systems were compared in the experiment: conventional tillage (CT) with 2WT, single pass shallow tillage with VMP (SPST), zero tillage with VMP (ZT), bed planting with VMP (BP) and strip tillage with VMP (ST). CT consisted of two passes of roto tiller and the final levelling of the plot for seedbed preparation. Seed and fertilizer were broadcasted manually. Other tillage systems consisted of tillage operation by VMP and seed and fertilizer were applied simultaneously in single pass operation. Tillage systems were applied to the same plot during the experimental period. The experiment was carried out in a randomised complete block design with three replications. Blackgram was planted with HYV BARI mash3. Seeding was completed on 28 February 2011. Costs of all the field operations during the growing season were estimated in Taka. The value of the wheat grain constituted the gross income. In arriving at the gross margins, the total cost and gross income/or net economic return was evaluated together and was calculated as plot yield (kg ha-1) to total cost of wheat production. All costs and income figures are presented as per hectare. The results of the economic analysis for the five tillage systems were based on the mean of three replications. Data were analysed statistically using the analysis of variance (ANOVA). The statistical separation of means among treatments was obtained using the least significant difference (LSD) test at the 0.05 significance level.

Source of Information: FMPHT Division Report

Article Link (Online Journal):

Funding Source:

1. ACIAR	Budget:
2. Government	Budget:

Total Budget (Tk.) :

Achievement/Findings:

Minimum tillage (i.e. SPST, ZT and ST) saved 18-29% fuel compared to CT. ST method reduced by 28% CO2 emission compared to CT. SPST, ZT, BP and ST saved 56, 48, 34 and 53% labour in land preparation compared to CT. Land preparation cost was identical among the SPST, ZT and ST. SPST, ZT, BP and ST saved 31, 27, 13 and 34% land preparation cost compared to CT. ST indicated cost saving tillage technology in land preparation. Minimum tillage showed no yield advantage over CT in blackgram cultivation.

Knowledge Management: Report/Proceedings