EFFECTIVENESS OF WHEAT BREEDING TO MODERN REQUIREMENTS FOR SUSTAINABLE DEVELOPMENT OF AGRICULTURE. IV REFUNDABLE EFFECTIVENESS OF FERTILIZATION AND PROFITABILITY OF PROCEEDING | ЕФЕКТИВНОСТ НА СЕЛЕКЦИЯТА НА ПШЕНИЦА СПРЯМО СЪВРЕМЕННИТЕ ИЗИСКВАНИЯ ЗА УСТОЙЧИВО РАЗВИТИЕ НА ЗЕМЕДЕЛИЕТО. IV ВЪЗВРЪЩАЕМА ЕФЕКТИВНОСТ НА ТОРЕНЕТО И РЕНТАБИЛНОСТ НА ПРОИЗВОДСТВОТО
2014
Ur, Zlatina, Institute of Plant Genetic Resources-Sadovo, Plovdiv (Bulgaria) | Vasileva, E., University of Agribusiness and Rural Development, Plovdiv (Bulgaria)
Aim of the study was to conclude on adaptation of modern varieties to the requirements of sustainable agriculture and hence the effectiveness of their breeding methods with respect to these requirements. The comparison between genotypes in two directions - by the breeding methods by which they were established and according to the time of their creation. The main results show that the gross energy yield of grain is higher by an average 5% more than standard for varieties produced by the methods of the inter hybridization and during the period 1995 to 1999. Energy efficiency and recyclable nitrogen fertilization in newly varieties increased at lower fertilization rates 6 kg/da a.s. compared with standards. Industrys profitability remained at the same level under the old and new varieties average of the profitability ratio ~ 1.6. Most stable values of the coefficient of profitability are found in varieties where the gross energy yield of grain varies relatively the least element of agrotechnics - Sadovo 1 , Boryana and Geya 1.
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