Page 4 - ผลของการจัดการธาตุอาหารพืชในดินต่อผลผลิตและคุณภาพของอ้อยที่ปลูกในดินด่าง Effects of plant nutrient management in calcareous soilon sugar cane yield and quality.

ห้องสมุดกรมพัฒนาที่ดิน

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Abstract

Effect of nutrient management in soil on yield and quality of sugarcane

cultivated in alkaline soil. Experiments were conducted from October 2017 to March
2021 at Ban Khao Din, Village No. 4, Nong Luang Sub-district, Tha Tako District, Nakhon

Sawan Province, to study methods for managing plant nutrients in soil on yield and

quality of sugarcane grown in alkaline soils. The experiments was randomized
complete block design (RCBD) with 5 treatment methods, 4 replications. Treatment

1: control plots, treatment 2, farmers applying chemical fertilizers formula 15-7-18 at
the rate of 50 kg / rai, treatment 3, applying chemical fertilizers according to soil

analysis values. (laboratory) and sulfur powder rate 150 kg / rai, treatment 4 add

chemical fertilizers according to soil analysis using ldd soil test kit together with sulfur
powder rate 150 kg / rai. Treatment 5, apply chemical fertilizers according to the

recommendations of the Department of Agriculture and sulfur powder at the rate of
150 kg / rai. It was found that the soil after all experiments showed a decrease in pH

from medium to slightly alkaline. Available phosphorus and exchangeable potassium

has increased. Treatment 3 gave the highest sugarcane yield every year, the average
3-year experiment was 17,104 kilograms per rai. In year 3, treatment 3 showed the

highest sweetness value was 21 degrees Brix and the highest economic return with an
average of 6,932 baht per rai.