N.Z. Vasilova, D.F. Askhadullin, D.F. Askhadullin, E.Z. Bagavieva, M.R. Tazutdinova, I.I. Khusainova, G.R. Nasihova
Tatar Research Institute of Agriculture, Orenburgsky trakt 48, Kazan, 420059, Russian Federation
Summary. The long-term investigation (2001-2015) of seven varieties of spring soft wheat, released in the Republic of Tatarstan in different years, was carried out. The aim of the experiment was to determine the influence of hydrothermic factor during May and June on the realization of the potential of spring soft wheat and peculiarities of the formation of its productivity in Tatarstan. It was established the significant differentiation of the variation coefficient of yield. In the MiS variety it reaches 32% with the grain yield from 1.3 to 4.6 t/ha. The similar tendency is also outlined for other samples; the average productivity of tested material is 65-77% only from the maximal one in the experiment; and the ratio of the minimal yield to the maximal one is 28-44%. These fluctuations are mainly explained by weather changes, as the plant nutrition and agronomic conditions remained fairly stable due to the use of the traditional technologies. The water-temperature regime in May-June, at the phases tillering-the beginning of the earing plays an important role in the formation of the yield under conditions of Tatrstan; the correlation coefficient is 0.69 ± 0.08. For the specific varieties this dependence varied from medium one (r = 0.57) in the Pamyati Azieva variety to strong one (r = 0.76) in Tulajkovskaya 10. The changes in the productivity of this variety are almost synchronized with the changes in the hydrothermic factor for the period of May-June, which can be used for modeling such conditions and forecasting the productivity. Under the production conditions the keeping of moisture in the soil during May and June should become the main direction of an increase in the productivity of spring soft wheat in the Republic of Tatarstan.
Keywords: spring wheat, hydrothermic factor, yield, variety, quality characteristics.
Author Details: N.Z. Vasilova, Cand. Sc. (Agr.), head of laboratory (e-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.); D.F. Askhadullin, Cand. Sc. (Agr.), senior research fellow; D.F. Askhadullin, Cand. Sc. (Agr.), senior research fellow; E.Z. Bagavieva, Cand. Sc. (Agr.), senior research fellow; M.R. Tazutdinova, research fellow; I.I. Khusainova, junior research fellow; G.R. Nasihova, junior research fellow.
For citation: Vasilova N.Z., Askhadullin D.F., Askhadullin D.F., Bagavieva E.Z., Tazutdinova M.R., Khusainova I.I., Nasihova G.R. Influence of Growth Conditions on Formation of Spring Wheat Productivity. Dostizheniya nauki i tekhniki APK. 2015. Vol. 29. No. 11. Pp. 41-43 (In Russ.)