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Table 6 Production, Consumption Quality and Economic Return of Monthong Durian with 3 different fertilizer rates for the farmer's durian orchard,
Ban Na Subdistrict, Ban Na Doem District, Surat Thani Province (2018-2019)
Index of
Fertilizer Benefit Cost
Fresh fruit Rind wt. Aril wt. Aril Edible Taste Yield/tree cost reduced Expense Income Net Ratio*
Fertilizer Treatment wt. thickness portion /tree fertilizer /tree /tree profit/tree (BCR)
cost
(g) (g) (g) (mm) (%) (kg/tree) (Baht) (%) (Baht) (Baht) (Baht)
T1=farmer practice of fertilizer Sweet
use in rate of 1,480-1,110-2,240 2,468 1,306 1,026 22 41 and 173 440 1,830 15,570 13,740 7.51
g N-P2O5-K2O /tree/year nutty 0
T2= soil test based fertilizers
for targeted durian yield at the 2,564 1,359 1,057 22 41 Sweet 191 362 18 1,752 17,190 15,438 8.81
rate 1,150-490-1,710 g N-P2O5- and
K2O /tree/year nutty
T3=fertilizer rate based on
classified soil texture at the 2,488 1,315 1,016 20 41 Sweet 193 401 9 1,791 17,370 15,579 8.70 โครงการหนังสืออิเล็กทรอนิกส์ด้านการเกษตร เฉลิมพระเกียรติพระบาทสมเด็จพระเจ้าอยู่หัว
rate 1,135-1,100-1,670 g N- and

160
P2O5-K2O /tree/year nutty
Statistical significant ns ns ns ns ns ns - - -
C.V.(%) 7.9 11.0 11.9 15.3 9.2 31.2 - - -
BCR = Benefit Cost Ratio (Net return/expense)
Income of durian products = 90 baht/kg
Fertilizer 21-0-0 = 11.60 baht/kg. Fertilizer 9-25-25 = 38.8 baht/kg.
Fertilizer 12-12-17 = 34.00 baht/kg. Fertilizer 0-0-50 = 46.00 baht/kg.