BIOMASS YIELD ENHANCEMENT OF DHAINCHA (SESBANIA SPECIES) THROUGH CULTURAL PRACTICES

Author:

CHANDA S. C.1,RAZZAK M. A.2,HOSSAIN M. A.2,GOLAM SARWAR A. K. M.2

Affiliation:

1. Laboratory of Plant Systematics, Department of Crop Botany, Bangladesh Agricultural University, Mymensingh, Bangladesh; Department of Agriculture Extension, Sirajganj, Bangladesh

2. Laboratory of Plant Systematics, Department of Crop Botany, Bangladesh Agricultural University, Mymensingh, Bangladesh

Abstract

Three separate field experiments were conducted to exploit biomass yield potential of dhaincha (Sesbania species) by different cultural practices. A total of six accessions from three Sesbania species, viz. S. bispinosa (#05, 71, 77 and 109), S. cannabina (#28) and S. sesban (#81), were used as experimental materials. Experimental treatments were population densities, viz. 180, 240 and 300 plants m-2; sowing dates, viz. 30 April, 15 May, 30 May and 15 June, and fertilizer doses, viz. 0 (without N/control), 10, 20 and 30 kg N ha-1. All the experiments were designed following randomized complete block design with three replications. Experiments on population density and sowing dates were conducted in control condition (without any fertilizer application). The N-fertilizer was applied as top dress at 30 days after sowing (DAS) and crops were harvested at 60 DAS. The maximum biomass (10.07 t ha-1) was obtained from 240 plants m-2. At 30 April sowing, plants produced the tallest height (199.69 cm), widest base diameter (1.02 cm), highest fresh weight (62.07 t ha-1) and biomass yield (14.73 t ha-1). There were no significant differences in biomass yield and yield contributing descriptors between 20 and 30 kg N ha-1. Among the species, S. bispinosa was the best performer in terms of biomass yield and yield contributing descriptors. It may be concluded that S. bispinosa (accession #71) could be cultivated with the population density 240 plants m-2, at 30 April, without any fertilizer application. In case of later sowing/cultivation, the 20 kg N ha-1 could be applied for the maximization of biomass yield.

Publisher

University of Agricultural Sciences and Veterinary Medicine in Iasi

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