Life Sciences Commons^™

Pasture Seeds : Production Techniques And The Future Market Situation, B J. Quinlivan

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

Like other farming and grazing industries, pasture seed production has its share of booms and slumps —perhaps more than its share. In Western Australia, the industry reached a high point during the mid-1960's when land development along the south and west coastal districts was at its height.

The drought year of 1969 and the subsequent rural depression saw pasture seed production fall to its lowest level for ten years and it is only in the last 12 months that there has been a revival.

With the sudden upsurge of interest last summer there will be many potential seed producers now …

Zinc Nutrition Of Rice Plants As Influenced By Seed Germinated In Zinc Solutions, Narsimaha R. Kasireddy, Lyell F. Thompson

Journal of the Arkansas Academy of Science

In recent years a physiological disorder of rice (Oryza sativa L.) seedlings growing in soils high in exchangeable calcium has been diagnosed as zinc deficiency. Calculations show that less than 30 g of zinc is needed to satisfy the nutrition of a hectare of 6-8-wk-old rice plants. Rice seed was soaked and germinated in dilute solutions of zinc ethylenediamine tetraacetate, zinc sulfate and zinc lignosulfonate prior to planting in greenhouse pots containing a zinc-deficient soil. The rice plants grown from the zinc-treated seed produced more growth and sorbed more zinc than rice plants grown from untreated seed.

Linseed : A Forgotten Crop, M L. Poole, R. J. Guyton, H. M. Fisher

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

Linseed has become a forgotten crop in Western Australia. From a peak production of 6 200 tonnes from 12 500 hectares in 1969, and an apparently bright future, it dwindled to a bare 80 tonnes from 250 hectares in 1973.

This article looks at some of the reasons for this decline and, with linseed fetching all-time record prices on world markets, gives reasons why the crop should be grown.

Seed Germination In Ginkgo Biloba L. I. Influences Of Cold Treatment, Gibberellic Acid And Red Light, Michael I. Johnson, James L. Wickliff

Journal of the Arkansas Academy of Science

The influences of cold treatment, gibberellic acid and red light treatment on rate of germination of seeds of Ginkgo biloba L. were followed for a 12-wk period. Dispersal units were collected, and the outer fleshy layer was removed soon after harvest. Of water-imbibed, non-cold-treated seeds, 50% of those which germinated did so within 11 wk after planting. A single application of red light accelerated the 50% germination time by 3 wk. Imbibition in GA3 solution did not appear to accelerate germination. With 4-wk cold treatment the 50% germination time was accelerated 6 wk in water-imbibed seeds. Both red light and …