A Manual for Citrus Growers1947 - 141 páginas |
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Página 47
... county and parts of Ventura and Santa Barbara counties , red spider develops actively all year and two oil sprayings with medium or heavy - medium oil are often necessary for complete control . The use of " DN - dust D - 8 " and " DN111 ...
... county and parts of Ventura and Santa Barbara counties , red spider develops actively all year and two oil sprayings with medium or heavy - medium oil are often necessary for complete control . The use of " DN - dust D - 8 " and " DN111 ...
Página 53
... County , but does not work effectively in Tulare County . Another race of the same species , Comperiella bifasciata , was introduced from China in 1941 to control red scale . This insect has become established but it has not yet proved ...
... County , but does not work effectively in Tulare County . Another race of the same species , Comperiella bifasciata , was introduced from China in 1941 to control red scale . This insect has become established but it has not yet proved ...
Página 109
... COUNTY AND COACHELLA VALLEY . COST ITEM Fertilizers : Commercial Barnyard Water Pest Control : Spraying Frost Protection : Cost Per Acre ( a ) California Imperial Coachella Desert County Valley $ 11.74 $ 11.17 $ 12.96 18.38 6.01 45.06 ...
... COUNTY AND COACHELLA VALLEY . COST ITEM Fertilizers : Commercial Barnyard Water Pest Control : Spraying Frost Protection : Cost Per Acre ( a ) California Imperial Coachella Desert County Valley $ 11.74 $ 11.17 $ 12.96 18.38 6.01 45.06 ...
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