Life Sciences Commons^™

A Preliminary Report On The Comparative Morphology Of The Shoot Apex Of Isoetes Macrospora Dur. And Some Effects Of Experimentally Applied Indole-3-Acetic Acid And Gibberellic Acid, Daniel R. Zinda

Journal of the Minnesota Academy of Science

Isoetes macrospora Dur. was found growing in 20 inches to 4 ft. of water in several sandy-bottomed lakes in Itasca County, Minnesota. The pH of the lakes was about 6 and the characteristic tree species of the immediate shorelines were: Thuja occidentalis, Pinus resinosa, Abies balsomea, Populus tremuloides, and Betula papyrifera. Experimental and normal plants were grown submerged in 1-liler beakers in the greenhouse for the 2-week experimental period. The normal shoot apex of /. macrospora is described as having three zones. Zone I, the metrameristem, consists of the superficial layer of initials which divide usually by anticlinal divisions and …

Pasture Seed Production, 1966 : Statistics And Comments, B J. Quinlivan

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

THE marketing of pasture seeds differs from that of some other primary products in that there are no guaranteed prices.

A knowledge of potential supply and demand for the various species and strains is just as important to the seed producer as good production techniques.

Continuous Grazing On Rose Clover At Northampton, R J. Parkin

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

BECAUSE of its upright growth habit, it is often thought that rose clover may require some form of specialised grazing management.

It has also been said that the sheep find the plant and in particular the seed head, undesirable in the dry stages.

However, more recent observations refute this (Bailey 1966). The present commonly-grown strains of rose clover are later flowering generally than the medics or Geraldton subterranean clover and stay green later in the season.

Stop-Drop Sprays For Jonathan And Delicious Apples, N H. Shorter, J. Cripps

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

STOP-DROP sprays prevent excessive pre-harvest drop of Jonathan and Delicious apples.

Recent research has thrown more light on the best methods of employing these materials.

TWO CHEMICALS used as "stop-drop" sprays are available commercially in Western Australia. One of these, alpha napthalene acetic acid (NAA), is also well known as a thinning spray for apples.

Poison Plants In The Garden, T E H Aplin

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

SOME 18 commonly grown garden plants are known to be toxic and many local home gardens have five or six of them.

Several other species can cause skin ailments.

The Recent Story Of Skeleton Weed : A Menace To Our Wheat Industry, G R W Meadly

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

SKELETON WEED was first found in Western Australia at Ballidu in 1963.

No further recording was made until December of last year when a small area was located near Esperance, but, within a brief period, plants were reported from Geraldton and Kwinana.

Stocking Rates On Cyprus Barrel Medic In The Northern Wheatbelt, R J. Parkin

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

IN May 1963, some three weeks after germination, a 4th year stand of Cyprus barrel medic was stocked with Merino wethers.

These same sheep are still grazing the area after three years.