An economic evaluation of technology in mangosteen production in
southern Thailand
การประเมินทางเศรษฐศาสตร์ของการใช้เทคโนโลยีการผลิตมังคุดในภาคใต้
Parinya Cherdchom, D. of Agricultural and Resource Economics, F. of Natural Resources, PSU.
Sutonya Thongrak, Asst. Prof., D. of Agricultural and Resource Economics, F. of Natural Resources, PSU.
Sayan Sdoodee, Assoc. Prof., D. of Plant Sci., F. of Natural Resources, PSU.
Corresponding e-mail : cparinya@ratree.psu.ac.th
Grant : Ministry of University Affairs
Published : Songklanakarin J of Soc Sci & Hum 2000, 6(3) : 251-261
Key words : economic evaluation, mangosteen, technology, production, southern Thailand
The objectives of this research were 1) to analyze costs and returns from four types of techno-logies used in mangosteen production, and 2) to compare net returns among the four technologies.
Type 1 [after harvesting, 15-15-15 (3 kg pt-1) was applied; after leaf-flushing, 8-24-24 (3 kg pt-1) was applied (8-24-24 was not applied in Changwat Phanggna); after fruit-setting, 13-13-21 (3 kg pt-1) was applied; manure (10 kg pt-1) was applied] is the traditional technology used by the farmers. Type 2 [spraying thiourea (40 g/20 L water) to induce leaf-flushing; after leaf-flushing, (15-30-15 + humic
acid/20 L water and 8-24-24 (2 kg pt-1) were applied; after fruit-setting, 13-13-21 (3 kg pt-1) and Highphos GA (40 cc/20 L water) were applied], type 3 [spraying thiourea (40 g/20 L water) to induce leaf-flushing; after leaf-flushing, Nutraphos super -K (4.0 g/20 L water) and 8-24-24 (2 kg pt-1) were applied; after fruit-setting, 13-13-21 (2 kg pt-1) + Nutraphos super -K 40 g + Germa 20 cc + Sorba
spray (10 cc/20 L water) were applied followed by the application of Nutraphos - N 40 g + Nutraphos super -K 20 g/20 L water] and type 4 [spraying urea (40 g/20 L water) to induce leaf-flushing; after
leaf-lushing, Nutraphos super -K (4.0 g/20 L water) and 8-24-24 (2 kg pt-1) were applied; after fruit-setting, 13-13-21 (2 kg pt-1) + Nutraphos super -K 40 g + Germa 20 cc + Sorba spray (10 cc/20 L
water) were applied followed by the application of Nutraphos - N 40 g + Nutraphos super -K 20 g/20 L water] are new technologies.
An economic evaluation was conducted using cost return analysis. The data was obtained from 2 experimental sites in Changwat Ranong and Changwat Phanggna during 1998-1999.
The results from the experiment in Changwat Ranong showed that technology type 3 gave the highest net return (18,778.25 baht per rai per year), higher than the net return from technology type 1 at 14,760.50 baht per rai per year. But, the production cost was higher by 918.20 baht per rai per year. In Changwat Phanggna, the highest net return (29,531.25 baht per rai per year) was obtained from
using technology type 2. This net return is higher than that from technology type 1 at 12,490.50 baht per rai, but an additional 2,082.50 baht per rai was required in production cost. Therefore, it is sug-gested that using technology types 2 and 3 in mangosteen production results in a higher net return.
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