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Ricedoc IRRI RiceDoctor Table Of Contents Welcome to Rice Doctor ....................................................................................1 Seed and Grain Symptoms ................................................................................3 Fact Sheets .....................................................................................................5 Deficiencies and Toxicities ..............................................................................5 Alkalinity.........................................................................................................5 Diagnostic summary ......................................................................................5 Full fact sheet ...............................................................................................5 Aluminum Toxicity............................................................................................8 Diagnostic summary ......................................................................................8 Full fact sheet ...............................................................................................8 Boron Toxicity................................................................................................13 Diagnostic summary ....................................................................................13 Full fact sheet .............................................................................................13 Calcium Deficiency .........................................................................................18 Diagnostic summary ....................................................................................18 Full fact sheet .............................................................................................18 Copper Deficiency ..........................................................................................22 Diagnostic summary ....................................................................................22 Full fact sheet .............................................................................................22 Iron Deficiency...............................................................................................27 Diagnostic summary ....................................................................................27 Full fact sheet .............................................................................................27 Iron Toxicity ..................................................................................................32 Diagnostic summary ....................................................................................32 Full fact sheet .............................................................................................32 Magnesium Deficiency ....................................................................................39 Diagnostic summary ....................................................................................39 Full fact sheet .............................................................................................40 Manganese Deficiency.....................................................................................43 Diagnostic summary ....................................................................................43 Full fact sheet .............................................................................................43 Nitrogen Deficiency ........................................................................................48 Diagnostic summary ....................................................................................48 Full fact sheet .............................................................................................48 Nitrogen Excess .............................................................................................59 Diagnostic summary ....................................................................................59 Full fact sheet .............................................................................................59 Phosphorous Deficiency ..................................................................................62 Diagnostic summary ....................................................................................62 Full fact sheet .............................................................................................63 Potassium Deficiency ......................................................................................72 Diagnostic summary ....................................................................................72 Full fact sheet .............................................................................................73 Salinity .........................................................................................................81 Diagnostic summary ....................................................................................81 Full fact sheet .............................................................................................81 Silicon Deficiency ...........................................................................................89 Diagnostic summary ....................................................................................89 Full fact sheet .............................................................................................90 Sulfide Toxicity ..............................................................................................93 i Table Of Contents Diagnostic summary ....................................................................................93 Full fact sheet .............................................................................................93 Sulfur Deficiency ............................................................................................97 Diagnostic summary ....................................................................................97 Full fact sheet .............................................................................................97 Zinc Deficiency ............................................................................................ 103 Diagnostic summary .................................................................................. 103 Full fact sheet ........................................................................................... 104 Diseases................................................................................................... 110 Bacterial Leaf Blight...................................................................................... 110 Diagnostic summary .................................................................................. 110 Full fact sheet ........................................................................................... 111 Bacterial Leaf Streak .................................................................................... 116 Diagnostic summary .................................................................................. 116 Full fact sheet ........................................................................................... 116 Bakanae...................................................................................................... 121 Diagnostic summary .................................................................................. 121 Full fact sheet ........................................................................................... 121 Brown Spot ................................................................................................. 126 Diagnostic summary .................................................................................. 126 Full fact sheet ........................................................................................... 126 False Smut .................................................................................................. 131 Diagnostic summary .................................................................................. 131 Full fact sheet ........................................................................................... 131 Leaf Scald ................................................................................................... 135 Diagnostic summary .................................................................................. 135 Full fact sheet ........................................................................................... 135 Narrow Brown Leaf Spot ............................................................................... 139 Diagnostic summary .................................................................................. 139 Full fact sheet ........................................................................................... 139 Red Stripe................................................................................................... 143 Diagnostic summary .................................................................................. 143 Full fact sheet ........................................................................................... 143 Rice Blast.................................................................................................... 146 Diagnostic summary .................................................................................. 146 Full fact sheet ........................................................................................... 147 Rice Grassy Stunt Virus (RSGV) ....................................................................
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