Agriculture, Livestock and Fisheries (a) to provide services for the improvement of agriculture; (b) to control plant diseases, weeds and pests in accordance with the Plants Act; (c) to control or exterminate insect, animal or other pests detrimental to crops; (d) to control by bye-laws methods of husbandry; (e) to regulate by bye-laws areas and methods of planting and types of crops and trees; (f