Yoshida - 1981 - Fundamentals of Rice Crop Science

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CLlMATlC ENVIRONMENT AND ITS lNFLUENCE 85 2.12. Effect of nitrogen on percentage sterility attributable to low temperature at meiotic stage (Sasaki et al 1973). 2.13. Effect of phosphorus application on percentage sterility attributable to low temperature at reduction division stage (Sasaki and Wada 1975). Photosynthesis in green leaves uses solar energy in wavelengths from 0.4 to 0.7 µm, often referred to as photosynthetically active radiation (PAR) or simply light. The ratio of PAR to total solar radiation is close to 0.50 in both the tropics and the temperate regions (Monteith 1972), and represents a weighted mean between the fractions for direct radiation and diffuse sky radiation.
86 FUNDAMENTALS OF RICE CROP SCIENCE Outside the earth’s atmosphere, a surface normal to the sun’s rays receives energy at a mean rate of approximately 2 cal/cm 2 per minute, known as the solar constant. The amount of solar radiation received at any location on the earth’s surface is a modification of the solar constant by two factors: the geometry of the earth with respect to the sun; and the absorption, reflection, and scattering in the atmosphere. As a consequence, the actual maximum radiation received at the 2.14. Solar radiation in some of the world’s major rice-growing areas (Yoshida 1978).
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FOREWORD Rice is vital to more than
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CONTENTS Foreword Preface GROWTH AN
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3.2. Adaptation to Submerged Soils
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4.5. Corrective Measures for Nutrit
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1 .1. OUTLINE OF THE LIFE HISTORY T
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GROWTH AND DEVELOPMENT OF THE RICE
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Page 43 and 44: GROWTH AND DEVELOPMENT OF THE RICE
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5.1. PHOTOSYNTHESIS 5.1.1. Photosyn
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PHOTOSYNTHESIS AND RESPIRATION 197
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Photosynthetic characteristics Meas
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A traditional tall variety vs an im
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Table 7.6. An example of high yield
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REFERENCES AGRICULTURAL POLICY STUD
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Yoshida - 1981 - Fundamentals of Rice Crop Science

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