Open AccessRESULTS OF ENVIRONMENTAL TESTS OF NEW HYBRIDES OF CORN IN EXTREME CONDITIONS OF 2017
Author(s) -
O. L. Shaĭtanov,
Oleg Shaytanov,
М Ш Тагиров,
М Ш Тагиров,
К. A. Karimov,
К. A. Karimov
Publication year - 2018
Publication title -
vestnik kazanskogo gosudarstvennogo agrarnogo universiteta
Language(s) - English
Resource type - Journals
ISSN - 2073-0462
DOI - 10.12737/article_5c3de390aeb1b1.95182086
Subject(s) - hybrid , hectare , water content , agronomy , loam , starch , moisture , environmental science , biology , phenology , growing season , horticulture , zoology , soil water , geography , ecology , meteorology , biochemistry , geotechnical engineering , agriculture , engineering
Evaluation of new breeding samples of early ripening corn hybrids of All-Russian Research Institute was carried out on typical for the Republic of Tatarstan gray forest loamy soils. Unusual climatic conditions for the XXI century of the growing season of 2017 allowed us to make the most rigorous selection among the studied hybrids. At the time of harvesting a sample was detected with grain moisture 33.0 (control 34.6%), starch content in grain 58.8% (control 49.2%), grain productivity in terms of moisture 14.0% - 5.17 tons per hectare (control 4.73 tons per hectare). Also, two samples with grain moisture content of 38.4-38.7% were selected, which surpassed the control by 33.8-39.1%, with an equal starch content. The results of phenological observations of the growth and development of early maturing corn hybrids over 12 years were analyzed. A close negative correlation (r = -0.933) was established between the average daily air temperature and the duration of sprouting of the early ripe maize hybrids. A regression equation was derived, according to which a decrease in average daily air temperature by 1°C increases the duration of emergence of seedlings of early ripe maize hybrids in Tatarstan by 1 day.