Estimating the Critical Water Content and Water Stress Coefficient of Soybean (Glycine max [L.] Merr.) in Andisol of Lampung Indonesia

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概要

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• Water stress is a major constraint to increasing soybean yields in the tropical regions such as Indonesia. Therefore, the present study was conducted to investigate the critical water content and water stress coefficient of soybean subjected to deficit irrigation. This research was conducted in a plastic house at the University of Lampung, Sumatra, Indonesia, from June to September, 2003. The soil moisture treatments imposed were 0-20%, 20-40%, 40-60%, 60-80%, and 80-100% of available water (AW) deficit, arranged in RCB (Randomize Complete Block) design with four replications. The results showed that critical water content has been changing through the total growth stage. Furthermore, soybean plant was suffered from water stress most strongly at the growth stages of pod filling and initial maturing, and the critical water content at these stages was 0.369m^3/m^3, at 30% of AW deficit (51kPa). The average yield response factor (Ky) of soybean for the total growing period was 0.507. The optimum yield of soybean with the highest yield efficiency was 2.77t/ha, crop water requirement was 587mm and could conserve 24.6% of water compared to full irrigation, which was reached by the water management that maintained the soil moisture at 40-60% of AW deficit, and the average value of Ks was 0.68.

• 日本雨水資源化システム学会の論文

著者

• Senge Masateru

  Faculty of Applied Biological Science, Gifu University

• Ito Kengo

  Faculty of Applied Biological Science, Gifu University

• Adomako John

  Faculty of Applied Biological Science, Gifu University

• Ito Kengo

  Faculty Of Applied Biological Science Gifu University

• Adomako John

  Faculty Of Applied Biological Science Gifu University

• Senge Masateru

  Faculty Of Applied Biological Science Gifu University

• Bustomi Rosadi

  Faculty of Agriculture, University of Lampung

• Bustomi Rosadi

  Faculty Of Agriculture University Of Lampung

• Rosadi R.

  Faculty Of Agriculture University Of Lampung

関連論文

• The Effect of Deficit Irrigation on Root/shoot Ratio, Water Use Efficiency and Yield Efficiency of Soybean
• Effects of Water Stress on Soil Plant Analytical Development (SPAD) Chlorophyll Meter Reading and its Relationship to Nitrogen Status and Grain Yield of Soybean under Different Soil Types
• Effects of soil water stress on nodulation, leaf nitrogen accumulation and grain yield at three different growth stages of soybean
• Evaluation of the potentialities of different soil types to yield response of soybean under deficit irrigation
• The Influences of Organic Mulches on Soil Moisture Content and Temperatures : A Case Study of Tapioca Wastes Application
• The Effect of Water Deficit at Individual Growth Stages on the Yield and Water Requirement of Soybean (Glycine max [L.] Merr.)
• Estimating the Critical Water Content and Water Stress Coefficient of Soybean (Glycine max [L.] Merr.) in Andisol of Lampung Indonesia
• Effects of River Flow on Aquatic Insects in Upstream Ibi and Neo Rivers
• The mode of operation of a regulating reservoir for effective use of river flow
• Critical water content and water stress coefficient of soybean (Glycine max [L.] Merr.) under deficit irrigation
• The effect of water stress in regulated deficit irrigation on soybean yield (Glycine max [L.] Merr.)
• The Effect of Water Deficit in Typical Soil Types on the Yield and Water Requirement of Soybean (Glycine max [L.] Merr.) in Indonesia

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