FORMING OF FOOTSTALKS DENSITY OF HULLESS BARLEY IN THE CONDITIONS OF SOUTHERN FOREST-STEPPE OF OMSK REGION
Abstract and keywords
Abstract (English):
In the conditions of southern forest-steppe zone of Omsk Region on meadow and chernozyom soil in 2011-2014 the researches on forming of footstalks den- sity of hulless barley of the variety Siberian hulless 2 depending on the term of sowing, the norm of seeding and the background of chemicalization were conducted. By increasing seed rate from 3.5 to 5.5 million germinat- ing grains per hectare the share of germinating plants was reduced from 71.4 to 65.8 %. At sowing in the first ten-day period of June field germination was higher ascompared to sowing of the second and third ten-day period of May. The difference between options of chemicalization was within 68.0-68.9 %. The survivabil- ity of the plants on the average on the terms of sowing and norms of sowing without application of chemicals was 42.9 %, on the background of fertilizers and herbi- cides made 49.0 %, at the treatment with herbicides -50.9 %. Fewer plants were harvested in the option with- out using the means of chemicalization and more at using herbicides and fertilizers. Sowing term with using herbicides influenced footstalks formation slightly; the number of plants varied from 221 to 227 pieces/ m2, in the option without chemicalization the fluctuation was from 172 to 240, at introduction of fertilizer and spraying herbicides - from 176 to 238 pieces/ m2. The mass of plants of culture was in the range 619 to 1195 g/m2. Depending on the term of sowing plants on the first and third terms were allocated. The best indicators of foot- stalks were noted in the crops of the second decade of May with the norm of 4.5 million germinating grains per hectare, introduction of nitric fertilizer (N60) and pro- cessing by tank mix of herbicides (“Puma Super” - 7.5-l/hectare and “Secator Turbo” - 75 ml/ hectare).

Keywords:
hulless barley, field germination, surviv- ability, stalks density, rate, term, chemicalization
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References

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