A Manual for Citrus Growers1947 - 141 páginas |
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Página 34
... chemical symbol used to measure acidity or alkalinity of chemicals or soils . By accurate tests chemists can de- termine just how alkaline a soil is . In the scale of alkalinity 8 is alka- line , 7 is neutral , and 6 is acid . Some ...
... chemical symbol used to measure acidity or alkalinity of chemicals or soils . By accurate tests chemists can de- termine just how alkaline a soil is . In the scale of alkalinity 8 is alka- line , 7 is neutral , and 6 is acid . Some ...
Página 38
... chemical nitrates such as nitrate of soda or nitrate of lime ; 2 percent ammoniacal nitrogen derived from one or more of the chemical am- moniates such as sulphate of ammonia ; and 4 percent organic nitrogen derived from tankage , blood ...
... chemical nitrates such as nitrate of soda or nitrate of lime ; 2 percent ammoniacal nitrogen derived from one or more of the chemical am- moniates such as sulphate of ammonia ; and 4 percent organic nitrogen derived from tankage , blood ...
Página 80
... chemical drifts onto the foliage of the citrus trees . Where the chemical has been applied with an orchard - type spray gun which has a tendency to fog , considerable distortion of new growth has been noted . Lemon trees seem to be more ...
... chemical drifts onto the foliage of the citrus trees . Where the chemical has been applied with an orchard - type spray gun which has a tendency to fog , considerable distortion of new growth has been noted . Lemon trees seem to be more ...
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