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Integrated Management of Lentil as Relay Crop in the Rice- Based Cropping System

Dr.Md. Omar Ali
Principal Scientific Officer (PSO)
Pulses Research Sub-Station, Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur-1701, Bangladesh,

Dr.Md. Iqbal Zuberi
Professor
Department of Botany, Rajshahi University,Rajshahi

Dr. Ashutosh Sarker
Regional Coordinator and Food Legume Breeder
ICARDA South Asia and China Regional Program,International Centre for Agricultural Research in the Dry Areas (ICARDA), New Delhi, India

Abstract/ Executive Summary:

The experiment was based on three genotypes- Rajbari local, X95S-167(4) and (iii) X95S-136; two types of rice straw height- 10 cm and 30 cm ; three seed rates (kg/ha)- eg. 30,50 and 60, and three levels of fertilizer- control, 30-60-20 kg/ha of N-P₂O₅-K₂O and 30-60-30 kg/ha of N-P₂O₅-K₂O. The experiment was laid out in a split-split-split-plot design with three replications. Genotype was placed in the main-plot, rice straw height was in the sub-plot, seed rate was in the sub- sub-plot and fertilizer level was in the sub- sub-sub-plot. From this study, it was observed that lentil genotype X95S-136X planted with a rice straw height under 30 cm, at a seed rate of 50 kg/ha, and with a fertilizer level at 30-60-30 kg/ha of N-P₂0₅-K₂0 produced the highest lentil seed yield of 2070 kg/ha and the lowest seed yield (550 kg/ha ) was obtained from genotype Rajbari local, planted with a rice straw height under 10 cm, at a seed rate of 30 kg/ha, and no fertilizer. Similar results regarding seed and straw yield was also found in the farmer’s field.

Keywords: Variety, Straw height, Seed rate, Fertilizer, Lentil , Relay cropping

Location: Pulses Research Centre (PRC), BARI) Ishurdi, Pabna

Start Date: 04-11-2009

End Date: 04-03-2010

Program Area: Farming System

Commodity: Lentil

Objectives:

To find out the suitable management package for better plant establishment and higher yield of lentil under relay cropping.

Methodology:

A field experiment was conducted at Pulses Research Centre of Bangladesh Agricultural Institute (BARI), Ishurdi, Pabna, Bangladesh during rabi season of 2009 to find out the suitable management package for better plant establishment and higher yield of lentil under relay cropping. The experiment was based on three genotypes- Rajbari local, X95S-167(4) and (iii) X95S-136; two types of rice straw height- 10 cm and 30 cm ; three seed rates (kg/ha)- eg. 30, 50 and 60, and three levels of fertilizer- control, 30-60-20 kg/ha of N-P₂O₅-K₂O and 30-60-30 kg/ha of N-P₂O₅-K₂O. The experiment was laid out in a split-split-split-plot design with three replications. Genotype was placed in the main-plot, rice straw height was in the sub-plot, seed rate was in the sub- sub-plot and fertilizer level was in the sub- sub-sub-plot. The unit plot size was 4 m x 3 m. Lentil seeds were broadcasted as per treatment in the rice field after excess water was drained out 15 days before rice harvest on 4 November, 2009. Rice straw height was maintained as per treatment. Fertilizers as per treatments, urea, triple super phosphate (TSP) and muriate of potash (MoP) were applied. TSP and MoP were applied 2 days before lentil sowing and urea was top dressed at 20 days after emergence. Rice was harvested with a sickle as per treatment. Intercultural operations were done when required. The crop was harvested on 4 March in 2010. Data on yield contributing characters were recorded from 10 randomly selected plants from each plot and, grain yield (kg/ha) and straw yield (t/ha) were recorded from whole plot at harvest. The recorded data were statistically analyzed and means values were adjudged by Duncan's Multiple Range Test.

Source of Information: Ph.D.Thesis of Agronomy, Life and Earth Science Faculty, RajShahi University, Rajshahi,2010

Article Link (Online Journal):

Funding Source:

1. Government

Budget: Thirty Thousand only

Total Budget (Tk.) : Thirty Thousand only

Achievement/Findings:

It was found that,Lentil genotype X95S-136 as well as X95S -167(4) under 30 cm rice straw height with seed rate of 50 kg/ha and with fertilizer level @ 30-60-30 kg/ha of N- P₂O₅-k₂0, all together showed better yield performance under relay cropping in transplanted aman rice. Relay cropping of lentil with transplanted aman rice may give an opportunity for earlier sowing of lentil for substantial seed yield which may contribute to further improvement of the system. Besides this, inclusion of lentil in the rice-based cropping system, lands could be brought under lentil cultivation to enhance lentil production, provide human and animal nutrition and also to ensure soil health improvement for sustainable production system. Finally, sustainable agriculture will be helpful for safety food production in the farm level as well as food will be secured.

Knowledge Management: Thesis