A study in the determination of quality/value relationships in rice (NRI Bulletin 55)

Econometric approaches to the valuation of a food product based on the implicit values of its individual quality attributes are a relatively recent development. Whilst such approaches have been used to explain and quantify consumer preferences at different market levels and in different countries, they offer considerable potential for storage enterprises. Armed with a knowledge of the financial significance of individual quality attribute changes over predicted storage periods, the enterprise can select a technology package which minimizes the most significant of those changes for a given commodity. A methodology for such an approach, based on a Natural Resources Institute case study in Indonesia, is described

Patterns of defoliation in four- and eight-paddock grazing systems.

Patterns of defoliation of the dominant palatable species in a recommended eight-paddock system and a four-paddock system with the same grazing cycle were monitored by repeated observations of marked tillers. In the two systems, the percentages of palatable species grazed in each period of stay, the numbers of defoliations per tiller during the season, the uninterrupted growth intervals and the heights of defoliation were all similarLanguage: EnglishKeywords: Defoliation; Grazing seasons; Intervals; Selectivity; Tiller heights; Treatments; frequency; grazing systems; palatable; tillers; growth; effects; botany; rotational grazing; thabamhlope research station; highland sourveld; natal; south afric