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Efficiency of Intercropping Vegetables and Spices Relayed with Pointed Gourd

M. R. Islam
Senior Scientific Officer
Agronomy Division, RARS, BARI, Ishurdi, Pabna, Bangladesh.

M. A. K. Mian
Principal Scientific Officer
Regional Agricultural Research Station, BARl, lshurdi, Pabna, Bangladesh.

S. N. Mahfuza
Scientific Officer
Agrononiy Division, BARI, Joydebpur, Gazipur, Bangladesh.

J. Hossain
Scientific Officer
Agrononiy Division, Regional Agricultural Research Station, Ishurdi, Pabna, Bangladesh.

A. Hannan
Senior Scientific Officer
BARI, Joydebpur, Gazipur, Bangladesh

Abstract/ Executive Summary:

An intercropping experiment was conducted at the Regional Agricultural Research Station, BARI, Ishurdi, Pabna during 2007-2008 and 2008-2009 to find out the suitable inter crop combination for increasing total productivity and returns. Seven treatments, viz. sole pointed gourd, two times lalshak + two rows turmeric in between pointed gourd lines, two times spinach + two rows turmeric in between pointed gourd lines, one time bush bean + two rows turmeric in between pointed gourd lines, two times lalshak + two rows ginger in between pointed gourd lines, two times spinach + two rows ginger in between pointed gourd lines and one time bush bean + two rows ginger in between pointed gourd lines were compared. All the inter cropping combinations were higher in terms of pointed gourd equivalent yield, gross return, gross margin and benefit cost ratio (BCR) over sole crops. The highest pointed gourd equivalent yield (105.92 t ha^-1) and gross return (Tk. 2118480 ha^-1) was found from two times spinach + two rows ginger in between pointed gourd lines combination. The land equivalent ratio was observed highest (2.29) in same combination which was similar to one time bush bean + two rows ginger in between pointed gourd lines combination. One time bush bean + two rows ginger in between pointed gourd lines combination gave the highest monetary returns in respect of gross margin (Tk.1623333 ha^-1) and BCR (4.19). The increases in total productivity in terms of pointed gourd equivalent yields were 53.72-128.62 t ha^-1 in inter crop combination compared to base crop.

Keywords: Intercropping, Relay, Vegetables, Spices, Pointed gourd

Location: Regional Agricultural Research Station, BARI, Ishurdi, Pabna

Start Date: 00-00-2007

End Date: 00-00-2009

Program Area: Farming System

Commodity: Pointed gourd

Objectives:

To find out the suitable inter crop combination for increasing total productivity and returns with short duration vegetables crop with pointed gourd.

Methodology:

The experiment was conducted at the Regional Agricultural Research Station, BARI, Ishurdi, Pabna during 2007-2008 and 2008-2009 to find out the suitable inter crop combination for increasing total productivity and return. The treatments were T₁= Sole pointed gourd, T₂= Two times lalshak + two rows turmeric in between pointed gourd lines, T₃= Two times spinach + two rows turmeric in between pointed gourd lines, T₄= One time bush bean + two rows turmeric in between pointed gourd lines, T₅= Two times lalshak + two rows ginger in between pointed gourd lines, T₆= Two times spinach + two rows ginger in between pointed gourd lines and T₇= One time bush bean + two rows ginger in between pointed gourd lines. The experiment was conducted in a randomized block design with three replications. The unit plot size was 6.0 m 1.25 m. Pointed gourd spacing was maintained as 1m 1m. Pointed gourd, lalsak (red amaranth), spinach and bush bean were planted / sown on 2 and 7 December 2007 and 2008, respectively. Lalshak and spinach were sown for second time after harvesting of first sowing. Turmeric and ginger were relayed in between two pointed gourd lines on 16 and 28 March 2008 and 2009, respectively after harvesting of vegetables (second time) and bush bean maintaining 50 cm 25 cm spacing. Pointed gourd was harvested from 1st May, 2008 to 30 October, 2008 and 5 May 2009 to 28 October 2009 respectively. Lalshak (red amaranth) and spinach were harvested on 26-28 DAS and 35-40 DAS respectively, in both sowing times. Turmeric and ginger was harvested on 7 and 10 December 2008 and 2009, respectively. The seed rate of lalshak (red amaranth), spinach, bush bean, turmeric and ginger were 2, 20, 120, 2000 kg ha^-1, respectively. Pointed gourd var. BARI potol-1, red amaranth var. BARI lalshak-1, Local var. of spinach, turmeric var. shinduri and local var. of ginger were used in the experiment. Trelly size was 6.0 m x 1.30 m (12 plants / trelly). During pointed gourd planting, 4.0 kg cowdung and 50 g TSP were applied in each pit. Urea and muriate of potash were applied at the rate of 25 g in each pit with three equal installments at 20, 60 and 90 DAE. Lalshak was fertilized @ 108-24-40-6 kg ha^-1 of N-P-K-S, respectively. Half of N and full amount of other nutrients were applied as basal dose and rest N was applied at 20 DAS. Second sown lalshak was fertilized with 54 kg ha -1 of N as basal and 54 kg ha^-1 as top dressed at 20 DAS. Spinach was fertilized with 10 t ha^-1 of CD + 92-15-38 kg ha^-1 of N-P-K. Half N and full amount of other nutrients were incorporated as basal. Rest N was top dressed at 15 DAS. Second sown spinach was fertilized with 46 kg ha^-1 of N as basal and 46 kg ha^-1 was top dressed at 15 DAS. Bush bean was fertilized with 120-40-60-12-3 kg ha^-1 of N-P-K-S-Zn. Half N and full amount of other nutrient was given as basal and rest N was top dressed at 30 DAS. For ginger, 160-60-160-20-4 kg ha^-1 of N-P-K-S-Zn and for turmeric, 160-48-140-20-4 kg ha^-1 of N-P-K-S-Zn was applied. Half N and full amount of other nutrients were incorporated as basal both for ginger and turmeric. Rest N for ginger was top dressed at 42 DAS and for turmeric at 80 DAS. Plots were kept weed free for whole growing period. Irrigation and other intercultural operation were done as and when required. Data on yield and yield attributes were taken and analyzed statistically. Equivalent yield, gross return, gross margin and BCR were calculated. Pointed gourd equivalent yield (PEY) was calculated.

Source of Information: Bangladesh Agron. J. 2015, 18(1): 7-12

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Achievement/Findings:

The result revealed that the maximum monetary returns in respect of gross margin (Tk. 1623333 ha^-1) and BCR (4.19) could be obtained with one time bush bean + two rows ginger in between pointed gourd lines combinations. Therefore, farmers should be interested to grow pointed gourd at wider spacing (1m x 1m) inter cropped with vegetables and relayed of spices instead of mono culture of pointed gourd.

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