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Effect of Fertilizer and Variety on the Yield of Sweet Potato

M.R.Ali
Senior Scientific Officer, RARS, Jamalpur,

D.J. COSTA
Principal Scientific Officer, RARS, Jamalpur,

M.J. ABEDIN
Additional Agricultural Extension Officer, Jamalpur Sadar, Jamalpur,

M .A. SAYED
onitoring and Evaluation Officer, DAE, Jamalpur,

N.C. BASAK
Senior Scientific Officer, OFRD, ARS, BARI, Mymensingh, Bangladesh.

Abstract/ Executive Summary:

The field experiment was conducted during the rabi season of 2005-06 in the farmer's field of Multi-location Testing (MLT) site, Melandah, Jamal pur to evaluate the performance of sweet potato varieties as well as to determine the optimum dose of fertilizer of sweet potato. Two varieties of sweet potato viz., i) BARI Sweet Potato-5 and ii) BAR!Sweet Potato-7 and five fertilizer doses viz., i) Estimated fertilizer dose for average yield goal (EDI for average yield goal), ii) Integrated Plant Nutrient System (lPNS) basis fertilizer dose, iii) Fertilizer Recommendation Guide' 97, iv) Farmer's practice, and v) Control. The highest sweet potato yield was obtained from BARI SP-7 with (lPNS) basis fertilizer doses (33.9 t/ha). The lowest sweet potato yield was obtained from BARI SP-7 with control treatment. The highest gross return ( 112700 Tk./ha) and gross margin (I 0756 Tk./ha) was recorded from IPNS basis fertilizer treatment. The lowest gross return (40950 Tk./ha) and gross margin (40951) Tk./ha) was recorded from control treatment. But the cost and return analysis showed that the highest benefit cost ratio (24.95) and marginal rate of return (1452) was found from FRG/97 treatment due to lower additional cost.

Keywords: Fertilizer, IPNS, Sweet potato,Yield.

Location: At the farmer's field of Multiplication lest (MLT), site, Melandah, Jamalpur

Start Date: 00-00-2005

End Date: 00-00-2006

Program Area: Crop-Soil-Water Management

Commodity: Potato

Objectives:

To determine the profitability of different combinations of fertilizers.

Methodology:

The experiment was conducted at the farmer's field of Multiplication lest (MLT), site, Melandah, Jamalpur during the rabi season 2005-06 with a view to finding out the suitable variety as well as determining the optimum dose of fertilizer of sweet potato. The soil belongs to the general soil type of Non-calcarious Dark Grey Floodplain under the AEZ of Old Brahmaputra Floodplain (AEZ 9). The land was medium high with loamy to clay loam. Belore conducting the experiment, the soil sample was analyzed from Bangladesh Institute of Nuclear Agriculture (BINA), Myinensingh. The soil was characteristically acidic (pH 5.2-6.2) having organic matter of 0.75-1.28% (low), total N 0.06-0.1% (low), exchangeable K 0.18-0.76 me/100 g soil (medium), exchangeable Ca 1.52-1.60 mel/100 g soil (low), exchangeable Mg 1.34-4.29 me/100g soil (high), available P 7.99-11.32 ppm (low), available S 7.69-10.9 ppm (low), available Zn 1.81-5.1 ppm (medium) and available B 0.05- 0.29 ppm (low). The chemical composition of cowdung is N 1.5%, P 1.0%, and K 1.5% (FRG'97).

Source of Information: Bangladesh J. Agril. Res. 34(3): 473-480, September 2009

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The highest sweet potato yield was obtained from BARI SP-7 with (lPNS) basis fertilizer doses (33.9 t/ha). The lowest sweet potato yield was obtained from BARI SP-7 with control treatment. The highest gross return ( 112700 Tk./ha) and gross margin (I 0756 Tk./ha) was recorded from IPNS basis fertilizer treatment. The lowest gross return (40950 Tk./ha) and gross margin (40951) Tk./ha) was recorded from control treatment. But the cost and return analysis showed that the highest benefit cost ratio (24.95) and marginal rate of return (1452) was found from FRG/97 treatment due to lower additional cost.

Knowledge Management: Journal