Fruit Science Commons^™

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.

Commercial Production Of Tomatoes In Western Australia, J P. Fallon, W H. Kooyman

Bulletins - 3000 - 3999

The tomato crop is subject to many hazards. Pests, diseases and adverse environmental conditions are frequently encountered and must be overcome. This bulletin has been prepared to give growers, whether they be experienced or new to tomato culture, an outline of the more important cultural practices involved in producing satisfactory crops. Common diseases and pests are described and where possible recommendations for their control are given.

Stone Fruit Regulations, W J. Hart

Journal of the Department of Agriculture, Western Australia, Series 4

Stone fruit grading regulations were introduced for the first time recently to keep small, green or badly blemished fruit off the market. This type of fruit is always in poor demand and can spoil the prices obtained for better lines of fruit by creating the impression of heavy supplies.

Shothole Of Stone Fruit, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

Shothole disease is most damaging on almonds and early-flowering peaches and apricots but can also affect nectarines, plums and cherries.

The causal fungus IStigmina carpophila) survives the summer in infected buds and twig cankers.

The autumn rains then stimulate production of spores which infect other twigs, buds and subsequently the new spring growth.

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.

Brown Collar Rot Of Citrus, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

Infection of fruit and foliage by brown rot fungi (Phytophthora spp.) occurs after opening rains in autumn. It can continue during periods of wet weather until spring.

New Varieties Could Extend The Peach Canning Season, S R J Newton

Journal of the Department of Agriculture, Western Australia, Series 4

THE peach canning industry in Western Australia at present has only a limited period of operation, coinciding with the harvest time of the major variety, Golden Queen.

New canning peach varieties tested at Stoneville Research Station could be used to extend the harvest period of canning peaches beyond that of the present standard variety, Golden Queen.

This would have obvious advantages for growers and a canning industry.

The South African variety Keimoes was the most promising canning peach tested. Tests on other varieties are continuing.