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On-farm Verification of Linseed and Sesame Variety for Fallow-fallow-t Aman Rice Cropping System in Sylhet Region of Bangladesh

M.I. Nazrul
On-Farm Research Division, Bangladesh Agricultural Research Institute (BARI)

Abstract/ Executive Summary:

A field experiment was conducted during rabi and kharif seasons of 2014-15 and 2015-16 to find out suitable linseed and sesame genotypes to fit in the Fallow-Fallow-T. aman rice cropping system under AEZ 20 in Sylhet region of Bangladesh. This experiment was laid out in a randomized complete block design (RCBD) with six dispersed replications. It was revealed that among the different linseed varieties, the genotype Zokiganj-local gave the maximum number (31.40) of capsules plant^-1 and 1000-seed weight (4.01g) with the highest seed yield (1003 kg ha^-1). Similarly, sesame var. BARI Til-4 provided maximum number of capsules plant^-1 (71.33), seeds plant^-1 (70.33) and highest 1000-seed weight (3.012g), which resulted the highest seed yield (1150 kg ha^-1) yield in arable fallow land of Sylhet region. The lowest seed yield 782 and 840 kg ha^-1 of linseed and sesame was produced by the genotypes Patuakhali local and the var. BARI Til-3, respectively.

Keywords: Sesame, Linseed, On-farm trial, Fallow land, Cropping system

Location: Location testing (MLT) site, Zokiganj

Start Date: 00-11-2014

End Date: 00-08-2016

Program Area: Farming System

Non-commodity: Cropping pattern

Objectives:

The present investigation was carried out to assess the performance of linseed and sesame varieties under rainfed conditions for Sylhet area.

Methodology:

The experiment was conducted at multi location testing (MLT) site, Zokiganj during rabi and kharif-I seasons of 2014-15 and 2015-16 to select suitable linseed and sesame genotypes to fit into the Fallow-Fallow-T. (Transplanted) aman rice cropping system under AEZ 20 in Sylhet region of Bangladesh. This is located in between 240 51' and 250 00' north latitudes and 92013' and 920 30' east longitudes and on an altitude of 10 meters. Total cultivable land in the area is 11210 ha, which covered 70% single cropped, 63% double cropped and 88% triple cropped with cropping intensity 169%. The area is dominated by medium land with clay loam and loamy soils. Major crops are paddy, mustard, sesame, linseed, potato, and winter vegetables. The dominant cropping patterns are fallow-fallow-T. aman rice, fallow-T. aus rice-T. aman rice, vegetable-T. aus rice-T. aman rice and Boro rice-fallow-fallow. The average climatic data of Sylhet shows that the mean annual minimum temperature was 16.20⁰C and the mean annual maximum temperature was 33.7 ⁰C and the annual mean temperature was nearly 17.15⁰C.

Rainfall of the area is uni-modal, usually occurring during April to October, and total annual rainfall reached to 3372 mm; whereas in December no rain at all and lowest amount of rainfall occurs in January followed by February. However, in rest of the months total rainfall was ranged from 112 mm to just below 200 mm. Rainfall increases gradually from the month of May and continued up to September. This experiment was laid out in a randomized complete block design (RCBD) with six dispersed replications. There were four different genotypes of linseed (var. BARI Tishi-1: Nila, Noakhali- Local, Patuakhali-Local and Zakiganj-Local) and sesame (T-6, BARI Til-2, BARI Til-3 and BARI Til-4) with seed rate 8.0 and 7.5 kg ha^-1, respectively. The unit plot size was 10 m × 10 m. Seeds were sown in broadcast method.

The seeds of linseed varieties were sown on 5-7 December and harvested on 10-15 March; on the contrary, sesame seeds were sown on 15-18 March and the crop harvested at full maturity on 12-15 June in 2014-15 and 2015-16, respectively. The seed yield was adjusted to 8% moisture content. The fertilizer nutrients NPKS (38-13-20-8 for linseed and 56-23-40-18 kg ha^-1 for sesame) were applied in the form of urea, triple superphosphate (TSP), muriate of potash (MoP) and gypsum, respectively (FRG, 2012). All fertilizers were applied as a basal during final land preparation. Plant protection measures and different intercultural operations were taken as and when necessary to raise healthy crops. The recorded data were statistically analyzed and mean values were separated by LSD test following Gomez and Gomez (1984).

Source of Information: Bangladesh Agron. J. 2017, 20 (1): 7-12

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The result showed that sesame var. BARI Til-4 produced higher seed yield followed by BARI Til-2 but in case of linseed var. Zokiganj-local out-yielded the other local as well as BARI developed linseed var. BARI Tishi-1. So, local variety of linseed should be given priority and yield could be enhanced by proper cultivation program.

Knowledge Management: Journal