Life Sciences Commons^™

Summer And Autumn Rainfall In Relation To Epidemics Of Wheat Stem Rust In Western Australia, W A. Shipton

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

High summer and autumn rainfalls, followed by rust infection of volunteer plants and favourable conditions during late winter and spring, lead to rust epidemics.

WIDESPREAD outbreaks of wheat stem rust are rare in Western Australia.

Thrips Damage Of Grapes, A N. Sproul

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

IN mid-December, a few bunches of Semillon grapes were submitted for examination from a Caversham Vineyard.

Damage to grape berries by thrips has not been recorded before in Western Australia.

Black Spot Of Peas, Department Of Agriculture, Western Australia

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

THIS fungous disease of peas causes "black spot" and "stem rot" on affected plants. During the wet winter months the disease is often so severe that it is difficult to grow garden pea varieties satisfactorily; but in summer when hot, dry conditions usually prevail the disease is of little consequence.

Leaf Scorching, Department Of Agriculture, Western Australia

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

DURING the summer months, leaves of many plants develop browning and scorching which progresses inwards from the leaf margin or downwards from the leaf tip.

The affected parts become dry and brittle and may break away from the remaining green areas.

The 1965 Ord River Cotton Crop, G D. Oliver, A. W. Hogstrom

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

THE financial results of 18 cotton growers in the Ord River Valley during the 1965 season were obtained during a survey conducted in August, 1965.

All farmers who have been allocated blocks and who grew cotton in 1965 were included in the survey.*

Net Blotch Of Barley, W A. Shipton

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

NET BLOTCH is the most prevalent disease of barley in Western Australia, and is capable of reducing yields considerably.

It is caused by the fungus Pyrenophora teres Drechsl.