No description available.

No description available.

About 25,000 acres of flax for fiber was grown during the second world war in the Province of Québec when the traditional sources of supply in Europe were cut off (Anonymous). With the armistice, the prices dropped and farmers abandoned this crop because of competition from European countries. In the 1950's a few farmers became interested in growing flax for linseed oil, chiefly in the Montreal area. The acreage bas increased steadily, so that by 1964 flax was being grown on about 35,000 acres in this Province (Shiller 1964). [...]

Typescript. / Thesis (Ph. D.)--University of Hawaii at Manoa, 1980. / Bibliography: leaves [207]-216. / Microfiche. / xvi, 216 leaves, bound ill. 28 cm

Typescript. / Thesis (Ph. D.)--University of Hawaii, 1964. / Bibliography: leaves [147]-157. / xiv, 159 l tables, mounted graphs

Graduation date: 1994

Although sulphur is one of the more abundant elements present in plants, its importance as a plant nutrient has been underestimated until comparatively recently. Scientific literature over the past few years, however, shows that interest in the determination of sulphur in natural waters, soil and plant materials has been renewed. Perhaps the main reason for the non-recognition of the importance of sulphur as a plant nutrient is the fact that sulphur-deficiency seldom occurs since sufficient sulphur is usually added to the soil in rainfall (particularly near industrial towns) to supply all the sulphur requirements of plants. In addition, sulphur is frequently present in fertilizers added to soils to counteract deficiency in other elements, especially phosphorus. Superphosphates, for example contain up to 60%, gypsum. Sulphur is also added to the soil in some instances in order to reduce the soil pH, the elemental sulphur being fairly readily oxidised in the soil to sulphuric acid. The organic fraction in the soil also contains sulphur.

No description available.

No description available.

In the production of most farm crops, emphasis is placed on yield per acre. Other things being equal, the higher the yield er acre the lower the per unit cost of production. But in the case of flue-cured tobacco, emphasis is placed primarily on quality. Yield per acre is, of course important, but it must be sacrificed if and when it is obtained at the expense of quality. In the production of flue-cured tobacco both yield and quality play equally important roles. The better the quality of the crop the higher the price per pound, and the higher the yield of good quality tobacco the greater the value per acre. / Master of Science