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Performance of Lentil Varieties Under Relay and Minimum Tillage Conditions in T.aman Rice

M. R. Islam
Senior Scientific Officer
Agronomy Division, Regional Agricultural Research Station, Bangladesh Agricultural Research Institute,, Ishurdi, Pabna.

M. O. Ali
Principal Scientific Officer
Pulses Research Center, BARI, Joydebpur, Gazipur. Bangladesh.

M. K. Uddin
Principal Scientific Officer
Spices Research Center. BARI. Bogra,

Abstract/ Executive Summary:

A study on comparative productive efficiency and feasibility of lentil varieties both at relay and minimum tillage were conducted at the Regional Agricultural Research Station, BARl, Ishurdi, Pabna, Bangladesh during the Rabi season of 2007 -08 and 2008-09. Three lentil varieties viz. BARI Masur-2. BART Masur-3 and BARI Masur-4 and two sowing methods viz. relay sowing and furrow sowing (Minimum tillage) were compared. The highest seed yield (1.59 t/ha) was obtained from BARI Masur-4 because or highest number or pods/plant and plant population/m^-2 while lowest from BARI Masur-2 (1.39 t/ha). The sowing methods had significant effect on the seed yield of lentil. Crops sown in furrows produced higher seed yield (1.60 t/ha) than that or crops in relay sowing. The interaction effect between varieties and sowing methods also had significant effect on the seed yield and yield attributes. The lentil variety BARI Masur-4 when grown in furro ws gave the highest seed yield (1.70 t/ha). Though seed yield and gross return were highest in furrow sowing but highest benefit cost ratio (4.67) was found in relay sowing method.

Keywords: Lentil, Relay, Minimum tillage

Location: Regional Agricultural Research Station, Ishurdi, Pabna, Bangladesh

Start Date: 00-00-2007

End Date: 00-00-2009

Program Area: Farming System

Commodity: Rice, Lentil

Objectives:

To evaluate productive efficiency and economic feasibility under relay and minimum tillage condition.

Methodology:

The experiment was conducted at the Regional Agricultural Research Station, Ishurdi, Pabna, Bangladesh during the rabi season of 2007-08 and 2008-09 to find out the comparative productive efficiency and feasibility of lentil varieties under relay and minimum tillage. The climate of the experimental site was subtropical in nature. The two years average total rainfall of 36.54 mm (about 53% of which falls in the last quarter of January), average minimum temperatures of 7-10 °C, and average maximum temperatures of 28-31 °C occurred during the growing periods. The experimental field was medium high and the soil was clay loam in texture having 7.50 p^H, 1.35% organic matter, 0.071 % total nitrogen, 11 μg/ml) available phosphorus, 0.12 meq/100g soil available potassium, 15 μg/ml sulphur, 0.66 μg/ml boron and 2.0 μg/ml zinc. Which indicated that soil contain amount of total nitrogen, Phosphorus, potassium below the critical level (0.10 %, 14 μg/ml, 0.20 meq/100g); sulphur, boron above the critical level (14,0.20 μg/ml) and zinc equal to critical level (2.0 μg/ml). The experiment was laid out in a split-plot design with three replications. Three lentil varieties viz. BARl Masur-2, BARI Masur-3 and BARl Masur-4 and two sowing methods viz. relay sowing and seed sowing in furrows at 40 cm apart rows were included in the study. In varietal characteristics, BARI Masur-2 needs 105-110 days to mature and its 1000 seed weight is about 12.50 g (at 8.c)% moisture content) having an average yield of 1.8-1.9 ton/ha. BARI Masur-3 requires 100-105 days to mature having 1000 seed weight about 23.80 g (at 8.0o/c moisture content) which seed yield ranged from 1.9-2.0 ton/ha. BARI Masur-4 takes 110-115 days to mature and its 1000 seed weight about 19.84 g (at 8.0% moisture content) as well as seed yield ranged from 1.9-2.0 ton/ha. The lentil varieties were assigned to the main-plot and the sowing methods in the sub-plot. The unit plot size was 6m x Sm. The crop was fertilized with 20-18-20 kg N- P - K/ha. In case of relay sowing, the fertilizer was broadcast in the standing T. Aman crop just before relay sowing of seeds. Seed and fertilizer were placed in the same furrow in case of furrow sown crop. The seeds of lentiI were broadcast in a standing rice crop after the excess water drained out i.e., 10 days before the rice harvest. The seed rate of BARI Masur-2 and BARl Masur-4 were used @ 40 and 35 kg/ha, respectively in relay and furrow method. In case of BARI Masur-3, 45 and 40 kg seed/ha were used in relay and furrow method, respectively. T. Aman rice was harvested at a height of straw 30 cm. The crop was sown on 31 October 2007 and 1 November 2008, respectively in case of relay sowing while in case of crop sown in furrows on 9 and 10 November 2007 and 2008, respectively. The crop was harvested in between 15-20 February in both the years, respectively. The changes or soil moisture level at different days after emergence is depicted. Soil sample was collected from 0-30 cm depth and moisture content was calculated by oven dry method. Data on yield and yield components were recorded, statistically analyzed and mean values were adjudged by LSD test at 0.05 levels or probability.

Source of Information: Bangladesh J. Agril. Res. 40( 2): 271-278. June 2015, ISSN 0258-7122

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Furrow sowing method was found superior to relay cropping in terms of highest seed yield of lentil but due to higher cost was involved in this system. As a result, relay cropping was found better benefit than furrow method of sowing. This technology could he demonstrated to resource poor farmers who have limited fund to grow lentil.

Knowledge Management: Journal