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Louisiana Agriculture Magazine, Fall 1975, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

Louisiana Agriculture Magazine, Summer 1975, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

Pesticide Regulation And The Farm Worker, R. Craig Loveless

IUSTITIA

It has long been recognized that many pesticide products offer a potential hazard, which if unregulated, may result in injury or death. The development of highly toxic pesticides during the last decade has created a need for stricter regulation of pesticide use in the agricultural community. Specifically, the farm worker of today is in need of legislative protection from exposure to deadly chemical agents now being used to control pests and disease in the fields and orchards. Regulating the handling and use of these dangerous pesticides is but one way to protect the farmer, the farm worker, and the environment. …

Louisiana Agriculture Magazine, Spring 1975, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

Extracts From The Department Of Agriculture's Annual Report, 1974-75, Department Of Agriculture, Western Australia

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

The Department of Agriculture's Annual Report for the year ended June 30, 1975, took the form of short reviews of selected activities of the Department during the year.

Some of these reviews are reprinted below to give an idea of the range of activities undertaken by the Department. A limited number of copies of the full report are available to interested organisations from the Department of Agriculture, Jarrah Road, South Perth, 6151.

In past years the Department's report has taken the form of a relatively detailed technical summary of the work of each Division. Because of the large volume of …

Virus Diseases In Agriculture, George Mclean

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

Viruses are extremely small particles which can only be seen with an electron microscope. A virus is present in a diseased plant as huge numbers of tiny particles within the cells of the plant. Viruses which are infectious can cause disease, and reproduce only inside the cells of a living plant.

Many insects transmit plant virus diseases—aphids, leafhoppers, mealy bugs, thrips and beetles. Generally a virus is spread by only one of these groups of insects.

The Western Australian Department of Agriculture is expanding the diagnostic service for the identification of plant viruses.

Decide : How Much Superphosphate, G A. Robertson, J. W. Bowden, N. J. Halse

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

* A 400 per cent increase in ihe price of superphosphate has reduced the economic optimum rates of super for crops and pastures in 1975.

* Many factors, both biological and economic, must be taken into account in determining the rate of superphosphate to apply.

• DECIDE, a model developed by CSIRO and the Department of Agriculture, provides a formal system in which all these factors can be considered.

• DECIDE is based on the results of all research on superphosphate carried out in Western Australia. However, each farmer's own knowledge of his farm, the soils, crops and animals is …

Model For Estimating The Probability Of Crop Production For Ginkgo Biloba L., Michael I. Johnson

Journal of the Arkansas Academy of Science

Mature female Maidenhair trees (Ginkgo biloba L.)have been observed to produce seed dispersal units in some years and none in other years. A temperature and/or photoperiod flowering threshold is suggested. Daily temperatures and daylengths at five Ginkgo sites in continental U.S. for January-April 1964-1974 were evaluated. A computer program was designed to estimate daily photothermal equivalent (PTE = temperature and photoperiod), and the magnitude and duration of the PTE in relation to a series of photothermal constants. Use of the data from production and nonproduction years provided a mathematical model for prediction of dispersal unit production. The model was tested …

Louisiana Agriculture Magazine, Winter 1975-1976, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.