A Manual for Citrus Growers1947 - 141 páginas |
No interior do livro
Resultados 1-3 de 13
Página 39
... fumigation still gives the best single control of scale insects in many districts . Fumigation injury results from excess dosage , weak tree condition , or extremes of climate . Foggy weather , very high temperatures , or very low ...
... fumigation still gives the best single control of scale insects in many districts . Fumigation injury results from excess dosage , weak tree condition , or extremes of climate . Foggy weather , very high temperatures , or very low ...
Página 44
... fumigation for black scale in coastal areas is best done in August and December . In intermediate regions treatment in August and Sep- tember usually is satisfactory . Where late holding of Valencia oranges is nec essary , winter fumigation ...
... fumigation for black scale in coastal areas is best done in August and December . In intermediate regions treatment in August and Sep- tember usually is satisfactory . Where late holding of Valencia oranges is nec essary , winter fumigation ...
Página 94
... fumigation with HCN immediately follows any straight copper spray . At least a 6 month period must elapse between . spraying with a straight copper Bordeaux and fumigation ; greater elapsed time is desirable , and occasional injury ...
... fumigation with HCN immediately follows any straight copper spray . At least a 6 month period must elapse between . spraying with a straight copper Bordeaux and fumigation ; greater elapsed time is desirable , and occasional injury ...
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