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Effect of Female Male Ratio and Harvesting Stage on Yield and Quality of Pointed Gourd (trichosanthes Dioica roxb.)

Nasmin Ara
Senior Scientific Officer (Horticulture)
Regional Agricultural Research Station, Bangladesh Agricultural Research Institute, Ishurdi-6620, Pabna, Bangladesh.

M. K. Bashar
Scientific Instructor
Agricultural Extension Division, OFRD, Bangladesh Sugarcane Research Institute, Ishurdi-6620, Pabna, Bangladesh.

MD. Karim
Senior Scientific Officer
Department of Agronomy, Regional Agricultural Research Station, Bangladesh Agricultural Research Institute, Ishurdi-6620, Pabna, Bangladesh.

Abstract/ Executive Summary:

The experiment was conducted at the Regional Agricultural Research Station, Ishurdi, Pabna during the growing season 2004-05 to find out the effect of optimum female male ratio and appropriate harvesting stage of pointed gourd on yield and quality. The studies were on three female male ration viz; 15:1 (T₁), 10:1 (T₂), and 5:1 (T₃) and three harvesting stages viz. 8, 12 and 16 days after female flower anthesis. The highest yield (31.0 t/ha) was obtained from 15:1 female male ratio (T₁). It was also observed that at 12 days after female flower anthesis (S₂) the plant produced the highest yield (31.06 t/ha). The lowest yield (18.77 t/ha) was recorded from 15:1 female male ratio with harvesting stage at 8 days after female flower anthesis S₂T₁ (15:1 plant density with harvest at 12 days) was found better yield.

Keywords: Female male ratio, Harvesting stage, Yield, Quality, Pointed gourd

Location: Regional Agricultural Research Station, Ishurdi, Pabna.

Start Date: 01-01-2005

End Date: 30-06-2006

Program Area: Crop-Soil-Water Management

Commodity: Pointed gourd

Objectives:

To find out the plant density (female male ratio) and appropriate stage of fruit harvest for higher yield and better quality of pointed gourd.

Methodology:

The study was undertaken at the Regional Agricultural Research Station, Ishurdi, Pabna during the period from 2005-06. The experiment was laid out in a factorial RCB design with three replications. Three different plant sex density (Female: Male) viz., (i) 15:1 , (ii) 10:1 (iii) 5:1 and three harvesting stages viz. (i) harvesting stage at 8 days after female flower anthesis (ii) harvesting stage at 12 days after female flower anthesis ( iii) harvesting stage at 16 days after female flower anthesis were included in the study. The male plant was planted in the middle of the bed. The anthesis of female flower was determined when the female folwer was opened. The mean annual rainfall was 1775 mm. The warmest and coldest months are June (36⁰C max.) and January (10.3⁰C max.) (Ara 2001). The soil of the experiment was clay loam in texture belonging to the high Ganges River flood plain under AEZ 11 (FAO, 1971). The selected plot was well drained having pH value 8.5. The bed sixe was 3.0m × 1.5m, spacing was 1.5m × 1.0m and pit was 50cm × 50cm × 50cm. The vine was planted on 10^th November 2005. BARI patal-2 (PG0025) was used as a planting material. Manures and fertilizers were applied as per recommendation (Rashid, 1993). The N P₂0₅ and K₂0 were applied in the form of urea, triple super phosphate (TSP) and Muriate of potash (MP) at the rate of 62.10 kg N, 80.40 kg P₂0₅, 60.00 kg K₂0 per hectare. The cowdung was applied at the rate of 10 tons per hectare. The entire quantity of cowdung, and TSP were applied at final land preparation. Urea and MP were applied as top dressing in three equal installments at 20, 60 and 90 days after sowing. The pointed gourd field was mulched with rice straw. Irrigation and other intercultural operations were done as and when necessary. Data on first flowering, vine length at first female flowering, number of node at 1^st female flowering, number of shoots per plant, number of fruits per plant, single fruit weight, weight of fruit per plant, fruit length, fruit radius, pulp weight per fruit, number of seed per fruit, weight of seeds per fruit yield ton per hectare were recorded. The significance of difference between treatments was evaluated by the least significance difference (LSD) test for interpretation of results (Gomez & Gomez, 1984).

Source of Information: SAARC JOURNAL OF AGRICULTURE, Vol. 5, Issue 2, 2007, pp. 07-18, ISSN 1682-8348, SAARC Agricultural Information Centre.

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The result of the present study suggested that at 12 days after female flower anthesis (S₂) the plant produced the highest yield (31.06 t/ha). The lowest yield (18.77 t/ha) was recorded from 15:1 female male ratio with harvesting stage at 8 days after female flower anthesis S₂T₁ (15:1 plant density with harvest at 12 days) was found better yield.

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