All Issues

A nontransparent laminated film containing aluminum foil proved relatively resistant to insect penetration– but not insect proof–in tests of film materials used for packaging dried fruits, nuts, candies, cereals, grains, meats, cheese, and other food products.

The systemic insecticides – schradan – octamethyl pyrophosphoramide and demeton or Systox–O,O-diethyl O-ethyl-beta-mercaptoethyl thionphos-phate–and their derivatives have shown unusual promise for the control of mites and aphids and other sucking insects of a variety of agricultural crops.

Biuret–a compound form of nitrogen obtainable from urea–was recently tested for its toxic effect on the growth of citrus and avocado.

Weather temperatures have a direct bearing on the cost of livestock production and profit.

The best and cheapest shell-bark control–the only real control–is the use of resistant lemon selections on good root-stocks.

When some plants are grown in the same soil for long periods of time, organisms detrimental to the species develop and reduce the growth of the plants or replants, if perennials, and of subsequent crops, if annuals.

Developed for taking unit area samples of cotton leaves, an improved leaf punch has advantages for the entomologist, the plant pathologist, and for others working in plant sciences.

Acaricieles–with long residual value– prevent late season buildup of European red mite and 2-spot mite populations on apples, but control of woolly apple aphid usually requires the inclusion of an aphi-cide in the mite treatment.

The orange banana squash–which originated as a selection from the regular or Pink Banana variety–differs from the parent variety in many respects.