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Table 8 Comparative of estimated nitrogen, phosphorus and potassium that plants used for production and the amount of fertilizer applied at 3 different rates
on the soil for 2 consecutive seasons in farmer’s durian orchard, Ban Na Subdistrict, Ban Na Doem District, Surat Thani Province (2017-2019)
A Farmer’s fertilizer rate A fertilizer rate based on soil and yield analysis A fertilizer rate based on classified soil texture
Nutrient Nutrient Nutrient
Plant Fertilizer Fertilizer Fertilizer
%
%
%
nutrition applied taken up Balance Recovery applied taken up Balance Recovery applied taken up Balance Recovery
by fruit
by fruit
(g/tree)
(g/tree)
(g/tree)
by fruit
(g/tree) (g/tree) (g/tree)
(g/tree) (g/tree) (g/tree)
Crop 1
Nitrogen 1,480 456 1,024 31 1,150 454 696 39 1,135 467 668 41
Phosphorus 1,110 147 963 13 490 147 343 30 1,100 151 949 14
Potassium 2,240 757 1,483 34 1,710 753 957 44 1,670 775 895 46
Crop 2
Nitrogen 1,480 558 922 38 1,150 618 532 54 1,135 623 512 55
Phosphorus 1,110 180 930 16 490 200 290 41 1,100 201 899 18
Potassium 2,240 926 1,314 41 1,710 1,025 685 60 1,670 1,034 636 62 โครงการหนังสืออิเล็กทรอนิกส์ด้านการเกษตร เฉลิมพระเกียรติพระบาทสมเด็จพระเจ้าอยู่หัว

162
Averaged
over 2 crops
Nitrogen 1,480 507 973 34 1,150 536 614 47 1,135 545 590 48
Phosphorus 1,110 164 946 15 490 173 317 35 1,100 176 924 16
Potassium 2,240 841 1,399 38 1,710 889 821 52 1,670 904 766 54