Actes

according acid agrarian agri agricultural production agricultural school amount animals applied artificial artificial insemination breeding Bulgaria carotene carried catch-crops cattle co-operative societies Congress considerable consumption cooperative societies countries cows crops cultivation dairies disease districts drying economic effect enterprise especially export extent fact factors farm farmers favourable feeding fertilization Finland fodder foodstuffs foot-and-mouth disease freezing fruit and vegetables Germany grain hectare hectolitres humic acid humus important improvement increase industry influence International irrigation labour land Lwów material means measures melioration methods milk million multiple births nitrogen nutrients nutrition obtained organization particular peasant culture Pengö pests phosphoric acid plants possible potatoes practical problem processing production cooperatives protein quantities reason regard regulation Reich requirements semen sewage small peasants soil spermatozoa stallion substances supply temperature twinning utilization virus vitamine vitamine D viticultural wine yield