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Effect of Desuckering and Earthing Up on the Yield of Mukhikachu in the Coastal Saline Area of Satkhira

P K Sardar
Principal Scientific Officer
On-Farm Research Division, Bangladesh Agricultural Research Institute, Daulatpur, Khulna

M M Howlader
On-Farm Research Division, Bangladesh Agricultural Research Institute, Daulatpur, Khulna

M M Hossain
On-Farm Research Division, Bangladesh Agricultural Research Institute, Daulatpur, Khulna

Abstract/ Executive Summary:

Three desuckering practices viz. S₁=Complete removal of sucker, S₂=Removal of suckers keeping 3 and S₃=No desuckering (control). Similarly, three treatments of earthing up viz. E₁=One earthing up at 60 days after planting (DAP). E₂=Two earthing up at 60 and 90 DAP and E₃=Three earthing up at 60, 90 and 120 DAP were practiced. No significant difference was found on yield in case of desuckering. However control plants (S₃) gave the highest corm yield (14.34 t/ha). In case of earthing up treatments, E₂ (earthing up at 60 and 90 DAP) gave the highest corm yield (15.71t/ha) followed by E₃(earthing up at 60, 90 and 120 DAP) and E₁ (earthing up at 60 DAP) giving 15.60 t/ha and 10.82 t/ha respectively. However, removal of all suckers keeping 3 (S₂) and earthing up at two times 60 and 90 DAP (E₂) produced the highest corm yield (16.39 t/ha) in mukhikachu. The lowest corm yield (9.58 t/ha) was obtained by the same desuckering treatment coupled with E₁ (earthing up at 60 DAP).

Keywords: Mukhikachu, Desuckering , Earthing up

Location: Satkhira

Start Date: 05-05-2009

End Date: 19-11-2009

Program Area: Crop-Soil-Water Management

Commodity: Aroids

Objectives:

To evaluate the effect of earthing up and desuckering practices on the yield of mukikachu in the saline area of Satkhira.

Methodology:

The experiment was conducted in the farmer’s field at MLT site, Satkhira during 2009-10. The experiment was comprised two factors- desuckering and earthing up. Desuckering composed of 3 treatments viz. S₁=Complete removal of sucker, S₂=Removal of suckers keeping 3, S₃=No desuckering (control). Similarly, earthing up composed of 3 treatments viz. E₁= One earthing up at 60 DAP, E₂=Two earthing up at 60 and 90 DAP and E₃=Three earthing up at 60, 90 and 120 DAP. The experiment was laid out in RCB (factorial) design having three replications. The variety Bilashi was used in the trial. The unit plot size was 2.0x1.8m. Mother corm was planted in line with the spacing of 60x40cm on 5 May, 2009. The land was fertilized with 160-135-190-15 kg of urea, TSP, MoP and gypsum per hectare respectively. All fertilizers other than urea were applied as basal during final land preparation. Urea was side dressed at 20, 35 and 55 DAP. The land was irrigated twice during the crop growing period. All the intercultural operations were done as and when necessary. The crop was harvested on 19 November, 2009. Data were collected and analyzed statistically by using MSTAT-C program and the mean difference was evaluated by the least significance difference (Gomez and Gomez 1984). The yield was calculated by summing the weight of both corms and cormels produced. Soil salinity was recorded at an interval of 15 days during the crop growing period and it ranged from 2.00-5.5 dS/m. Before measuring soil salinity soil sample was collected from root zone as per treatment. Soil sample were dried up to remove moisture. The air dried sample was crushed and ground with hammer and removed foreign matters and plant materials. Then soil solution was made by adding one part soil with five parts distilled water and shaked well for 30 minutes for bringing more salts into the solution. Soil solution was allowed to settle for one minute. Before testing, EC meter (HANNA Model HI 8033) was calibrated with 0.01M KCl at 25⁰ C (Leif Peterson, 2002). Then the electrode of conductivity meter was placed in the solution and meter reading was recorded. The reading was converted to soil salinity by multiplying the conversion factor. In case of meter reading (x) <2, EC=0.122+1.32x; 2-14, EC=1.269+1.267x; >14.1, EC=8.31+0.895x.

Source of Information: Bangladesh J. Agriculturist. 5(2): 67–70, 2012 ISSN 1812-4631

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Removal of all suckers keeping 3 (S₂) and earthing up at two times 60 and 90 DAP (E₂) produced the highest corm yield (16.39 t/ha) in mukhikachu. The lowest corm yield (9.58 t/ha) was obtained by the same desuckering treatment coupled with E₁ (earthing up at 60 DAP).

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