Page 4 - ผลของการใช้ระบบน้ำหยดต่อผลผลิตและคุณภาพของอ้อยในดินด่างจังหวัดนครสวรรค์ Effects of drip irrigation on sugarcane yield and qualityon calcareous soil in Nakhonsawan province

ห้องสมุดกรมพัฒนาที่ดิน

Abstract

Study of effect of drip irrigation system on yield and quality of sugarcane in
alkaline soils, Nakhon Sawan Province. Experiments were conducted from October
2017 to April 2021 at Ban Khao Din, Village No. 4, Nong Luang Subdistrict, Tha Tako
District, Nakhon Sawan Province, to study the effects of using the drip irrigation system

to increase yield and quality of sugarcane grown in alkaline soils. Including economic
returns.The experiments was randomized complete block design (RCBD) experiments,
5 treatments, 4 replications.Treatment 1: Control plots without drip irrigation,

treatment 2, Farmers without drip system, treatment 3: Water equal to 50% of the
estimated water volume in the drip irrigation system, treatment 4 gives water equal
to 100 % of the assessed water content in the drip irrigation system. Treatment 5
provides water equal to 150% of the assessed water content in the drip irrigation

system.
It was found that the soil after all experiments showed a decrease in pH from
medium to slightly alkaline. The organic matter content tended to increase in all
experiments, as well as the exchangeable potassium content of all experiments.

Treatment showed the highest sugarcane production for all 3 years with total yield of
3 years was 70.83 tons per rai, representing an average annual yield of 23.61 tons per
rai. Sugar cane sweetness was found that the drip system had no effect on cane
sweetness. However, chemical fertilization had an effect on the sweetness of the

sugarcane. Treatment 5 showed the most economic return every year and highest net
income of sugarcane cultivation, the highest three-year average is 7,770 baht per rai
per year.