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Performance of T. Aman Rice-cum-vegetables as Influenced by Selected Species of Trellis-grown Vegetables and Nature of Trellis

M. A. Hasan
Department of Agronomy, Hajee Mohammad Danesh Science and Technology University,Dinajpur

N. Islam
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202

Abstract/ Executive Summary:

The experiment was carried out during the period from July 2005 to December 2005 with a view to observing the relative performance of flat trellis and T-trellis (180 cm breadth) in response to the T. Aman rice cv. BRRI dhan41 and selected trellis-grown vegetable. The treatments comprised four crop combinations viz. rice + bottle gourd (C₁), rice + white gourd (C₂), rice + bitter gourd (C₃) and rice + yard long bean (C₄), and four types of nature of trellises viz. Flat trellis (control) (T₁), Slant T-trellis (Fixed) (T₂), Flat T-trellis (T₃) and Slant T-trellis (Flexible) (T₄). The experiment was laid out in a randomized complete block design with three replications. T. Aman rice cv. BRRIdhan41 was fertilized with 220, 50, 60, 35 and 5 kg ha^-1 of urea, triple superphosphate, muriate of potash, gypsum and zinc sulphate, respectively. Thirty-day old rice seedlings were transplanted on 04 August 2005. The 50 cm breadth and raised ails were prepared and fertilized with different kinds of fertilizers and manures according to dike cropping manual. Vegetable seedlings were planted on 14 August 2005.Trellises (180 cm breadth) were made in the middle of the plot to minimize the shading effect on rice crop. After sampling the whole plot was harvested at maturity on 16 December 2005. Rice equivalent yield, gross return, net return and benefit-cost ratio were also calculated. The experimental results revealed that the lowest grain yield (4.29 t ha^-1) of rice was obtained from the crop combination of rice + yard long bean (C₄) with yield reduction of only 4.7% as compared to the highest grain yield of 4.50 t ha^-1. Regarding vegetable yield, bottle gourd (C₁) on the ails of rice plots gave the highest yield of 13.63 t ha^-1 followed by 9.01 t ha^-1 in white gourd (C₂). Bitter gourd (C₃) and yard long bean (C₄) were almost damaged by heavy and continuous rainfall during the growing period. Except flat trellis (T₁), there were no remarkable differences among the nature of trellis treatments. Flat T-trellis (T₃) appeared as the best (4.58 t ha^-1). Flat trellis (T₁) gave the lowest grain yield (4.20 t ha^-1) of rice with yield reduction of only 8.0% as compared with flat T-trellis (T₃). There was compensation in vegetable yield with respect to nature of trellis. Regarding vegetable production, flat T-trellis (T₃) produced the highest vegetable yield (7.45 t ha^-1) followed by flat trellis (T₁) (6.47 t ha^-1). As a result, these two types of trellises were found equally good in terms of producing higher rice equivalent yields. In vegetable cultivation with T. Aman rice crop, the highest values of gross return (Tk. 191,820 ha^-1), net return (Tk. 133,890 ha^-1) and benefit-cost ratio (3.31) were obtained from C₁T₃(rice + bottle gourd and 180 cm breadth flat T-trellis) treatment. The lowest values of gross return (Tk. 93,190 ha^-1), net return (Tk. 36,690 ha^-1) and benefit-cost ratio (1.65) were recorded from C₂T₄(rice + white gourd and flexible slant T-trellis) treatment combination.

Keywords: Performance, Trellis, Vegetable and T. aman rice.

Location: Agronomy Field Laboratory, Mymensingh, Bangladesh

Start Date: 00-07-2005

End Date: 00-12-2005

Program Area: Farming System

Commodity: Vegetables, Rice

Objectives:

1. To find out the performance of T. Aman rice-cum-vegetables as influenced by selected species of trellis-grown vegetables and nature of trellis.

Methodology:

The experiment was carried out at the Agronomy Field Laboratory, Mymensingh, Bangladesh during the period from July 2005 to December 2005 with a view to observing the relative performance of flat trellis and T-trellis (180 cm breadth) in response to the T. Aman rice cv. BRRI dhan41 and selected trellis-grown vegetable. The treatments comprised four crop combinations viz. rice + bottle gourd (C₁), rice + white gourd (C₂), rice + bitter gourd (C₃) and rice + yard long bean (C₄), and four types of nature of trellises viz. Flat trellis (control) (T₁), Slant T-trellis (Fixed) (T₂), Flat T-trellis (T₃) and Slant T-trellis (Flexible) (T₄). The experiment was carried out in a randomized complete block design with three replications and the unit plot was 4.0m × 2.5m. Rice crop was fertilized with 220, 50, 60, 35 and 5 kg ha_-1 of urea, triple superphosphate, muriate of potash, gypsum and zinc sulphate, respectively (BRRI, 2004). The whole amount of fertilizers except urea was given during final land preparation as basal application. Urea fertilizer was top dressed at 20 and 55 DAT of rice. Thirty-day old rice seedlings were transplanted on 04 August 2005. The 50 cm breadth and raised ails were prepared and fertilized with different kinds of fertilizers and manures according to dike cropping manual. All the vegetable crops were transplanted on the ails of rice plot maintaining a distance of 50 cm from pit to pit and later on these were given on to the trellis made of bamboo and plastic rope arrangements On the other hand, Vegetable seedlings were planted on 14 August 2005.Trellises (180 cm breadth) were made in the middle of the plot to minimize the shading effect on rice crop. Intercultural operations were done and plant protection measures were taken as per requirement of the rice-cum-vegetable cultivation. Five rice hills were selected randomly from each plot and uprooted before harvesting for recording data other than yields. After sampling the whole plot was harvested at maturity on 16 December 2005. Here, vegetable yield assessment was made not on the basis of area on which vegetables were grown but on the basis of whole plot. Rice equivalent yield, gross return, net return and benefit-cost ratio were also calculated. Data were analyzed and the mean differences were adjudged among the treatments by Duncan’s Multiple New Range Test.

Source of Information: J. Agrofor. Environ. 4 (1): 125-128, 2010; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

It could be concluded that bottle gourd and white gourd vegetable cultivation along with T. Aman rice crop is remunerative in terms of both yield and economics. While rice cultivation alone, because of its high input cost, is comparatively less profitable. So, rice cultivation could be made profitable by simultaneously growing vegetable on the ails of rice plots. Therefore, both flat trellis (T₁) and flat T-trellis with 180 cm breadth (T₃) were effective kind of trellis for this type of vegetable and rice production as because, these types of trellises provide minimum shading effects on the growing crops underneath.

Knowledge Management: Journal