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Effect of Straw Mulch and Irrigation Level on Yield and Water Use of Indigenous Potato

Mst. Mushfiqua Hasneen Chowdhury
Senior Instructor
National Agriculture Training Academy Gazipur-1703

Dr. Md. Jamil hasan
Principal Scientific Officer
Head Hybrid Rice division Bangladesh Rice Research Institute Gazipur-1701

Abstract/ Executive Summary:

The results indicated that quite a lot of soil moisture was conserved by mulching, thereby, reduced irrigation water requirement remarkably. On an average mulching produced 16.15% higher yield over non-mulching and under the highest irrigation level it saved 13.62 mm irrigation water and produced 13.3% more yields. Mulching also favoured improvement of tuber size to a considerable extent. All the characters studied including yield were increased with irrigation frequency as well. The highest yield of 4.39 t/ha found with four irrigation, was 65.48% higher than the yield (5.07 t/ha) of non-irrigated plot. Interaction effect further stated that both higher number of irrigation and mulching was important for growth and yield of potato. Water use efficiency (total and irrigation) of mulching was also better than non-mulching.

Keywords: Potato, Mulching, Irrigation water use efficiency

Location: Experimental farm of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Salna, Gazipur

Start Date:

End Date:

Program Area: Crop-Soil-Water Management

Commodity: Potato

Objectives:

The investigation was under taken to study the effect of straw mulch and irrigation level on yield and water use of indigenous potato

Methodology:

The experiment was laid out in split plot design with three replication using local indigenous potato variety Lalpakhri. The mulching (M₁) with 12-15 cm thick rice straw and un-mulching (M₀) treatment were placed in the main plots. Five irrigation treatments viz., 10: no irrigation after seedling establishment, 11: one irrigation at 30 days after sowing (30 DAS), 12: two irrigation at 30 and 45 DAS, 13: three irrigation at 30, 45 and 60 DAS and 14: four irrigation at 30, 45,, 60 and 75 DAS were placed in the sub-plots. After harvest tuber diameter was obtained from 8 randomly selected tubers from each plot. The size grade distribution of tubers were done into three size categories as < 35 mm, 35-45 mm and > 45 mm and weight of tubers under each size grade were recorded. The data were also recorded on plant height, number of leaves /plant, number of stem/hill, fresh weight of plants/hill, canopy coverage, number of tubers/hill, tuber yield/plant and yield (t/ha). The recorded data were analyzed statistically. The significance of treatment effects was tested by variance ratio and means were compared by least significant difference test.

Source of Information: Bangladesh Journal of Agricultural Sciences, 29(2):243-250, July, 2002

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

ll the characters studied including yield were increased with irrigation frequency as well. The highest yield of 4.39 t/ha found with four irrigation, was 65.48% higher than the yield (5.07 t/ha) of non-irrigated plot. Interaction effect further stated that both higher number of irrigation and mulching was important for growth and yield of potato.

Knowledge Management: Journal