A Manual for Citrus Growers1947 - 141 páginas |
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Página 43
... SCALE dosage or application on young growth . 2,4 - D appears to be effective and compatible when applied with the ... BLACK SCALE until recently was a serious pest of citrus trees in coastal , intermediate and portions of interior ...
... SCALE dosage or application on young growth . 2,4 - D appears to be effective and compatible when applied with the ... BLACK SCALE until recently was a serious pest of citrus trees in coastal , intermediate and portions of interior ...
Página 44
... scales are easier to kill while they are young , and unless all are in the proper stage , many insects will survive treatments . Oil spraying or fumigation for black scale in coastal areas is best done in August and December . In ...
... scales are easier to kill while they are young , and unless all are in the proper stage , many insects will survive treatments . Oil spraying or fumigation for black scale in coastal areas is best done in August and December . In ...
Página 131
... black scale Pantomorus godmani ( Crotch ) -Fuller's rose beetle Paratetranychus citri ( McG ) -red spider ( citrus ) Penicillium digitatum - green mold Penicillium italicum - blue mold Phyllocoptes oleivorus ( Ash ) -silver mite ...
... black scale Pantomorus godmani ( Crotch ) -Fuller's rose beetle Paratetranychus citri ( McG ) -red spider ( citrus ) Penicillium digitatum - green mold Penicillium italicum - blue mold Phyllocoptes oleivorus ( Ash ) -silver mite ...
Índice
Chapter Page 1 SOILS CLIMATE WATER | 2 |
CITRUS TREES | 4 |
IRRIGATION PRACTICES | 11 |
Direitos de autor | |
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Palavras e frases frequentes
100 gallons acid alkaline ammonia amount applied areas black scale boxes per acre brown rot carbon cause chemical chlorosis Citrus Diseases Citrus Experiment Station citrus fruits citrus growers Citrus Leaves citrus trees copper COST PER ACRE County cover-crops crop cultivation Cultural Cost damage dust effective fertilizer field boxes foliage fumigation fungus furrows grapefruit grove growth heavy inches injury insects irrigation irrigation water juice leaf lemons lime manganese deficiency manures material mealybug method mixture moisture Mutual Orange Distributors navel navel oranges nitrate nitrogen oil spray orchard organic matter packed boxes parasites percent pest control phosphate phosphorus plow-sole potash pounds production profitable pruning red scale red spider rind root zone rootstock Rough lemon scaly bark Septoria soil sucker sulphate sulphur symptoms temperature thrips treatment trifoliate orange trunk usually Valencia orange virus weeds windbreak wood young trees zinc deficiency zinc oxide zinc sulfate