Management of rice production systems to increase productivity

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APPENDIX 2: SOIL ANALYSIS DATA Table 24. Soil Sample Analysis at Time <strong>of</strong> Planting, Upland Rice Trial, Texture Soil pH Water 1:2 Brikama, The Gambia, 2000 EC mmhos/cm 1:2 Bray‐1 Avl. P ppm Organic matter (%) Total N (%) Sandy loam 5.4 0.07 3.13 1.56 0.41 Table 25. Soil Sample Analysis at Tillering, Upland Rice Trial, Brikama, Control Treatment Soil pH Water 1:2 Low‐Input High‐Input V. High‐Input 5.3 5.5 5.6 5.2 The Gambia, 2000 EC mmhos/cm 1:2 0.1 0.1 0.1 0.1 Bray‐1 Avl. P ppm 7.3 12.5 2.3 3.6 Organic matter (%) 1.1 2.1 1.2 1.1 Total N (%) 0.3 0.3 0.3 0.1 125
Table 26. Soil Sample Analysis at Harvest, Upland Rice Trial, Brikama, Control Treatment Soil pH Water 1:2 Low‐Input High‐Input V. High‐Input 5.5 5.5 5.2 5.0 The Gambia, 2000 EC mmhos/cm 1:2 0.07 0.05 0.06 0.06 Bray‐1 Avl. P ppm 5.1 6.9 7.6 8.4 Organic matter (%) 1.7 1.7 1.5 1.4 Total N (%) 0.08 0.08 0.07 0.06 Table 27. Soil Sample Analysis at Planting, Upland Rice Trial, Brikama, Control Treatment Soil pH Water 1:2 Low‐Input High‐Input V. High‐Input 5.8 5.6 5.7 5.4 The Gambia, 2001 EC mmhos/cm 1:2 0.09 0.09 0.09 0.09 Bray‐1 Avl. P ppm 3.0 10.0 5.1 5.0 Organic matter (%) 1.4 1.1 0.9 1.2 Total N (%) 0.04 0.06 0.08 0.04 126
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MANAGEMENT OF RICE PRODUCTION SYSTE
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MANAGEMENT OF RICE PRODUCTION SYSTE
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BIOGRAPHICAL SKETCH The author was
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ACKNOWLEDGMENTS The author is indeb
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TABLE OF CONTENTS CHAPTER ONE: RICE
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3.3.2. Effect of Seedling Age at Tr
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Table 10. Grain Yield from Low‐In
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Table 28. Soil Sample Analysis at T
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Table 46. Yield Parameter SRI Ferti
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Figure 10. Grain Yield at Different
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context of food security. As there
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management of soil nutrients and so
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enough fertilizer was available to
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the importation of agricultural inp
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12000 10000 8000 6000 4000 2000 0 4
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The reason for the decline in The G
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2.1. Introduction CHAPTER TWO: LOW
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tend to produce moderately higher y
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available nitrogen and phosphorus r
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Table 3. Soil Test Data from Upland
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flood/drought cycle, which is provi
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educed transpiration due to soil wa
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management practices (dry land/irri
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Sta Cruz et al. (1994) identified d
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2.1.6. Nutrient Dynamics in Tropica
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efficiency (Cassman and Harwood, 19
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(1) Higher mineralization rate in t
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Translocation of N from the vegetat
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NUEp = TDM / NPLANT (3) From equati
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4) The NuMaSS can be used to predic
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1. Zero application (Control) 2. Lo
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are averages of duplicated assays a
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show any significant differences be
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Table 8. Low‐Input Upland Rice Tr
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stress conditions that prevailed du
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Fertilizer Level Variety Grain Yiel
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Harvest Index Harvest Index 0.6 0.5
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Tissue N (%) Tissue N (%) Tissue N
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According to Fukai et al. (1999) hi
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NUE(grain) g per g (N) NUE(grain) g
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Necessary inputs for the nitrogen m
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Determining Crop N: The first step
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Hierarchy for NSoil: 1. You will en
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e able to access a value from the d
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Figure 10. Grain Yield at Different
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season, but in the event that major
Page 93 and 94: In many cases, results did not meet
Page 95 and 96: 1995 worked with Malagasy farmers a
Page 97 and 98: 3.1.3. Water Management Water contr
Page 99 and 100: diffusion from the soil‐water int
Page 101 and 102: and rewetting of soils as practiced
Page 103 and 104: 2. SRI will increase rice yields be
Page 105 and 106: Three sets of rice nurseries were p
Page 107 and 108: Two rice varieties, IET 3137 and IT
Page 109 and 110: tillering variety, with plant heigh
Page 111 and 112: Gambia prefer bigger seedlings beca
Page 113 and 114: Figure 12. Number of New Roots Re
Page 115 and 116: Seedling Age 5‐Days 5‐Days 10
Page 117 and 118: Table 14. SRI vs. Conventional Prac
Page 119 and 120: The difference in 1000‐grain weig
Page 121 and 122: Variety Inter Space (cm) ITA 306 IE
Page 123 and 124: 104 SRI management practice using 3
Page 125 and 126: fertilizer, but no better panicle f
Page 127 and 128: increase in fertilizer application.
Page 129 and 130: transplanting urea fertilizer was a
Page 131 and 132: 112 Applying just compost alone gav
Page 133 and 134: submerging the 7‐day old seedling
Page 135 and 136: 116 An increase in SRI yields in su
Page 137 and 138: 4.1. General conclusions CHAPTER FO
Page 139 and 140: practices are 2 to 3 times higher t
Page 141 and 142: application. This study has proven
Page 143: APPENDIX 1: FIELD LAYOUT V. High‐
Page 147 and 148: Low‐Input 40‐40‐40 APPENDIX 3
Page 149 and 150: Table 32. Low‐Input Upland Rice T
Page 151 and 152: Low‐Input 40‐40‐40 Table 34.
Page 153 and 154: Table 36. Nitrogen‐Use Efficiency
Page 155 and 156: Table 38. SRI vs Conventional Pract
Page 157 and 158: Table 40. Grain Yield from SRI Prac
Page 159 and 160: Fertilizer Level Table 42. SRI Fert
Page 161 and 162: Table 44. SRI Fertilizer Management
Page 163 and 164: Table 46. Yield Parameters SRI Fert
Page 165 and 166: Cabrera, M.L. 1993. Modeling the fl
Page 167 and 168: 148 Dunsmore, J.R., A.B. Rains, G.D
Page 169 and 170: 150 Hassink, J., Lebbink, G. and Va
Page 171 and 172: 152 management in agricultural syst
Page 173 and 174: 154 Root traits to increase drought
Page 175 and 176: 156 emission from rice fields: The
Page 177 and 178: 158 on ammonia volatilization losse
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Management of rice production systems to increase productivity

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