An abstract of a thesis, a full report of which has already been noticed.

Surveys on forest scheduled for spraying against spruce budworm [Choristoneura fumiferana] in Maine, USA, showed that up to 30% of the forest area could be eliminated by identification of non-host (i.e. non-coniferous) forest thus reducing cost and environmental dangers.

Forest policies, sectoral plans and forest working plans for India in general and Uttar Pradesh in particular were analysed with respect to aims of social welfare and found to be deficient in many respects. The economic limitations of the policies and plans are described and discussed. Interviews,...

A discussion of possible applications including monitoring soil m.c., geological and soil mapping, and monitoring vegetation m.c.

Wild oats [Avena sp.] infest 90% of the small grain average in N. Dakota causing losses of $150-250 million/year. The Integrated Wild Oat and Pest Management Project has been funded for a 3-year period to monitor infestations and advise on methods of reducing the weed density to no more than about...

Much of the Tonto National Forest lands consist of the fragile Sonoran Desert scrub community. This vegetative community consists of both specially adapted vegetation and thermic/hypothermic soils. The local weather conditions and the traditional mode of operation allow for year round grazing of...

The model is presented and discussed in terms of ten criteria of the contribution of the forestry sector (including activities related to management, production and distribution of timber, and forest recreation resources) to a region, in the context of an affluent, industrialized market economy....

Quantity and value of the assortment yield of four natural stands (age 63-145) of Douglas Fir in British Columbia were analysed, using linear programme techniques to determine the optimum assortment yield from each stand. Financial rotations at two levels of establishment costs and three interest...

Assessment of the economic efficiency of brush control treatments on rangeland from forage production and livestock utilization data is discussed briefly.