IMPACT OF ORGANIC AND MINERAL FERTILISERS ON POTATO AND TOMATO YIELD IN BULGARIA

In recent years, organic farming, or the production of food plant animal origin, has been increasingly discussed in our country. A few growers decided to reorient on their farms. The aim study was evaluate yields potatoes and tomatoes under organic, mineral organic-mineral fertilisation within framework a multi-year vegetable crop rotation.The experiments were carried out alluvial-meadow soil (Mollicfluvisol) village Tsalapitsa (42.191734 N, 24.580252 E), Plovdiv region, like every subsequent year, regardless experienced, variants placed same area. results for quality showed that there lack clear, unequivocal answer choice recommendation fertilisation. highest yield obtained (3242 kg/da) variant with mixed tomato recorded (4307.4 kg/da), lowest control (without fertilisation) – 1670.1 kg/da.The system as complex, dynamic mechanism is influenced by several factors. integrated system, i.e., combination increases overall efficiency, reflected productivity some indicators experimental crops, increase degree damage insect herbivores fungal pathogens.