Elements of crop structure and biological pro-ductivity depending on the technology of growing winter wheat seeds

The peculiarities of the formation elements crop structure and biological yield winter wheat seeds depending on genotype different technologies its cultivation have been clarified. seed depends structure, namely: number plants, productive stems, grains in an ear mass grain from one ear. It was found that with basic technology growing seeds, average three years mid-early mid-ripening varieties, no significant difference coefficient tillering At same time, there a tendency to increase ears medium-ripe varieties. highest (1.4) Astarta variety, which provided largest stems (498 pcs./m2), weight this variety smallest (1.4 g), while 6.97 t/ha significantly less than other A similar dependence observed for ripening With stalks (436 (1.6 g) Boria and, accordingly, lower compared varieties maturity group. dec-rease contributed productivity. use energy-rich ensured reliable productivity both groups, one. bushing were higher medium-ripening which, combination agrotechnological measures – increased doses fertilizers main top dressing, protection crops diseases (twice treatment fungicides) obtaining yield, amounted 7.60 or 0.17 more all technologies. On average, over years, medium-early-ripening ones. technology, application trace growth stimulants, greater obtained due bushing, within each group, energyrich depended tillering, ear, as well varietal characteristics. Varieties groups responded differently Key words: coefficient, mass,