A Manual for Citrus Growers1947 - 141 páginas |
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Página 52
... parasites in insectaries each year for liberation in orchards where mealybug infestations suddenly flare up . Although this method is expensive , it is still less costly than any other method of control . Two parasites , Coccophagus ...
... parasites in insectaries each year for liberation in orchards where mealybug infestations suddenly flare up . Although this method is expensive , it is still less costly than any other method of control . Two parasites , Coccophagus ...
Página 53
... parasites of red scale are in prospect . Black scale now is controlled successfully in coastal areas by the parasite , Metaphycus helvolus . However , a part of this parasite's dif ficulty in controlling black scale in other areas is ...
... parasites of red scale are in prospect . Black scale now is controlled successfully in coastal areas by the parasite , Metaphycus helvolus . However , a part of this parasite's dif ficulty in controlling black scale in other areas is ...
Página 131
... parasite of black scale Pantomorus godmani ( Crotch ) -Fuller's rose beetle Paratetranychus citri ( McG ) -red ... parasite Septoria limonum - fungus causing septoria spot Sesbania macrocarpa - wild hemp Soya max - soy beans Tetracnemus ...
... parasite of black scale Pantomorus godmani ( Crotch ) -Fuller's rose beetle Paratetranychus citri ( McG ) -red ... parasite Septoria limonum - fungus causing septoria spot Sesbania macrocarpa - wild hemp Soya max - soy beans Tetracnemus ...
Índice
Chapter Page 1 SOILS CLIMATE WATER | 2 |
CITRUS TREES | 4 |
IRRIGATION PRACTICES | 11 |
Direitos de autor | |
18 outras secções não apresentadas
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