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Full-Text Articles in Life Sciences
The Value Of Alar Sprays For Apples, N H. Shorter, J. Cripps
The Value Of Alar Sprays For Apples, N H. Shorter, J. Cripps
Journal of the Department of Agriculture, Western Australia, Series 4
ALAR* is a growth retardant which has been die subject of intensive research in other countries. It tends to slow both fruit growth and ripening and to reduce shoot extension.
Overseas and local investigations with apples have shown that Alar will reduce preharvest drop, restrict shoot growth and increase flower bud formation for the following season.
Powdery Mildew Of Apples, Department Of Agriculture, Western Australia
Powdery Mildew Of Apples, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
Powdery mildew (Podosphaera leucotricha) markedly affects the growth and vigour of susceptible apple varieties, particularly Jonathan and Cleopatra.
The fungus survives the winter as mycelial threads in dormant buds on spurs and laterals infected the previous season. At bud-burst the mycelium grows onto the developing leaves and blossom clusters to form white patches.
Spores produced on these patches are spread by the wind onto the healthy growth.