EFFECTIVENESS OF SELECTION OF WHEAT TO MODERN REQUIREMENTS FOR SUSTAINABLE DEVELOPMENT OF AGRICULTURE ІI. ENERGY EFFICIENCY OF FERTILIZATION
Abstract
Aim of the study was to conclude on adaptation of modern varieties to the requirements of sustainable agriculture and hence the effectiveness of their methods of selection with respect to these requirements. The comparison between genotypes in two directions - by the selection methods by which they were established and according to the time of their creation. Tested a total of 11 genotypes were created between 1972 and 2008. The results show a more efficient absorption of nutrients from the soil in the newer varieties. Despite these results, the profitability of production remained at the same level over the years (an average of the profitability ratio ~ 1.6). Economic profitability is not correlated with the efficiency of fertilization but depends on the gross energy yield of grain yield (which is a composite indicator), and increased with increasing nitrogen fertilizer rate to 18 kg/da a.s. Most stable values of the coefficient of profitability were detected in the same species, provided that the gross energy yield of grain varies relatively the least element of agrotechnics – „Sadovo 1“, „Boryana“, „Geya 1“.
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Аgraren doklad 2010 (Godishen doklad za sastoqnieto i razvitieto na zemedelieto), МZH.
Аgrostatistika, МZH
http://www.mzh.government.bg/ MZH/bg/ ShortLinks/ SelskaPolitika/ Agrostatistics/ Farm_accounting_information.aspx
Balaur N.S., А.V. Теtiu, 1983, PrImenenie energeticheskogo analizа dlia оcenki effektivnosti tehnologij vozdelyivania polevych кulytur, Ekspress – informaciia ,Mold. NIIТ, UDK 631, 15.
Vasileva Е., Z. Ur, 2012, Еfektivnost nа toreneto na pshenica (Tr. Aestivum) pri promiana na niakoi element v agrotehnikata: І. Dobivi zurno, nauchni trudove na Suiuza na uchenite, Seriia V. Tehnika i тehnologii, Plovdiv, IX, 301-310.
Кirchev Х., 2005, Izsledvania vurhu biologichnite I stopanski kachestva na novi sortove tritikale v zavisimost ot аgroekologichnite uslovia i аzotnoto тоrene, Disertacia za obrazovatelna i nauchna stepen Doktor, 123-129.
Kostadinova S., N. Jordanova, 2010, Тorene i energijna efektivnost pri еchemik sort Кamenica, Field Crops Studies, VI – 1, 91-96.
Коteva V., 2002, Vlianie nа мineralnoto torene vurhu еnergijnata hranitelnost nа zimnа мekа pshenicа, iubilejna nauchna sesia „Selekcia i аgrotechnikа nа polskitе кulturi”, 01.06.2001, Dobrich, t.II, 689-695.
Кudrev Т.G., 1984, Еnergetichnia аnaliz – оsnoven faktor zа оcenka nа еfektivnostta nа tеchnologiite pri otglezhdane na rasteniata, Fiziologia na rasteniiata, 4, 56-61.
Mineev V., 2006, Аgrochimia, Моskovskij universitet, Мoskvа, 477-482.
Najdenov IA., B. Zacharinov, 2012, ЕSCB 724 Zamursiavane na pochvite i vuzdejstvie vurhu еkosistemite, http://ebox.nbu.bg/pol12
Stankov I., 2012, Systoianie nа еsennite posevi i predstoiashti grizhi zа tiah, Dobiv Plius, 26-28.
Тоdorov N., 1990, I. Оcenka nа furazhite, Selskostopanska Naukа, 1, 47-58.
Тоnev Т., 1997, Brutna еnergijna produktivnost nа razlichni тipovе zurneni seitboobrushtenia v Dobrudzha, Rastenievudni Nauki, 3-4, 58-63
Hristov I. i dr., 2010, Dobiv nа suhа masа i еnergijna produktivnost nа кulturitе v petpolno seitboobrushtenie v zavisimost ot toreneto, 20th Anniversary International Scientific Conference, 3-4.06.2010, Stara Zagora, t.I. Agricultural science, Plant studies, 154-159
Hulsbergen, K. J. et al., 2002, Rates of nitrogen application required to achieve maximum energy efficiency for various crops: results of a long-term experiment, Fields Crop Research, 77 (1), 61-76.
Rodale R., 1998, Agricultural systems: the importance of sustainability, National Forum, 68, 2-6.
Ziaei S.M. et al., 2013, A comparison of energy use and productivity of wheat and barley (case study), Journal of the Saudi Society of Agricultural Sciences, www.ksu.edu.sa - acc. 21 April 2013.
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