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Screening of Country Bean Genotypes for Greenpod and Seed Production in Sylhet Region

T Akter
Officer, Sonali Bank Ltd., Madhabpur Branch, Habiganj

D Deb Nath*
Department of Horticulture, Faculty of Agriculture, Sylhet Agricultural University, Sylhet-3100

MS Islam
Department of Horticulture, Faculty of Agriculture, Sylhet Agricultural University, Sylhet-3100

F I Ivy
Department of Horticulture, Faculty of Agriculture, Sylhet Agricultural University, Sylhet-3100

Abstract/ Executive Summary:

An experiment was conducted during November 2013 to March 2014 at the experimental field of Sylhet Agricultural University (SAU), Sylhet to observe the differences in relation to seed colour, cotyledon colour, seed shape, flower colour, petiole and inflorescence length, pod shape and size, yield performances etc. among the five lablab bean genotypes viz., SB003, BP003, SB008, SB010 and IPSA Sheem-2. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications.The genotypes SB003 and SB008 had reddish brown seed coat colour while it was reddish for BP003 and black for SB010 and BARI Sheem-1. Among the genotypes 100 dry seed weight was ranged from 30.00 g (BARI Sheem-1) to 41.30 g (SB003). Variation in pod and seed yield potentiality was also found among five lablab bean genotypes. The genotype SB008 produced the maximum number of pods plant^-1 (263.3) followed by BP003 (256.3) but plant-1pod yield was maximum for the genotype BP003 (1.78 kg) followed by SB008 (1.68 kg). This variation was due to the individual pod weight. The highest pod yield was recorded in the genotype BP003 (11.86 t ha^-1) while it was the lowest in the genotype SB003 (9.0 t ha^-1). For seed production potentiality, the genotype SB008 produced highest amount of seed plant^-¹ (242.97 g) since it produced the maximum number of dry pods plant^-¹ (141.18).

Keywords: Lablab bean, Genotypes, Pod, Seed yield.

Location: Horticulture research field of Sylhet Agricultural University, Sylhet

Start Date: 00-11-2013

End Date: 00-03-2014

Program Area: Variety and Species

Commodity: Country bean

Objectives:

The present experiment was, therefore, undertaken to assess the pod and seed production potentiality among the collected country bean genotypes.

Methodology:

The experiment was conducted at the Horticulture research field of Sylhet Agricultural University, Sylhet during the November 2013 to March 2014. In this study five lablab bean genotypes were used to estimate pod and seed yield. The seeds of these genotypes were collected from the Department of Horticulture, Sylhet Agricultural University, Sylhet. The land was prepared by removing weeds, stubbles, crop residues and triming ails. Hence the land was acidic in nature, lime (Dolomite) was applied in the field @ 4 kg decimal^-1. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. The unit plot size was 1.5 m × 6.0 m accommodating single row bed-1and six pits bed^-1. Plants were spaced at 1.0 m in a bed and 2.0 m between two adjacent beds. Distances of 50 cm in the form of drain between the block and between the beds within a block were maintained. Pits of 50 cm × 50 cm × 50 cm were prepared two weeks before transplanting of seedlings. The soil of the pits and basal dose of fertilizers mixed well and prepared in such a way that the pit tops remained at least 10 cm above the ground level to facilitate drainage. For planting two seeds of each of the five genotypes were sown in poly bags containing well prepared mixture of sandy loam soil and well decomposed cowdung at 50 : 50 ratio on 10 November 2013 and 10 days old seedlings were transplanted in the pit and out of two seedlings, one was thinned out two weeks after transplanting. The land was fertilized with cowdung, urea, TSP and MoP @ 10 ton, 50 kg, 150 kg and 150 kg ha^-1, respectively (Rashid 1999). Full dose of cowdung, TSP and half of the MoP were applied during pit preparation one week before transplanting. The remaining MoP and urea were applied in three equal installments as top dressing at 15, 30 and 45 days after transplanting. Weeding, staking, irrigation and other intercultural operations were done as required. Data were recorded from all experimental plants on different morphological parameters, yield and yield attributes. Some of the parameters were analyzed using simple statistical measures while others were analyzed using MSTAT software for analysis of variance.

Source of Information: J. Sylhet Agril. Univ. 4(1):71-74, 2017 ISSN: 2308-1597

Article Link (Online Journal): www.jsau.com.bd

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Significant variations were observed among the genotypes in respect to seed yield and yield attributes except 100 dry seed weight. The highest seed yield plant^-1 was recorded in SB008 (242.97 g) due to the maximum number of dry pod plant^-1 (141.18). The seed yield plant^-1 was the lowest (124.42 g) in the genotype SB003. The highest seed yield ha^-¹ was obtained in SB008 (1.62 t) and was significantly differed from other genotypes. The lowest seed yield (0.83 t ha^-1) was obtained in SB003. Pod borer infestation (%) was highest in the genotype SB003 which was 2.11% and the lowest was 0.56% in the genotype SB010.

Knowledge Management: Journal