Effect of agro technological methods of adaptation on the potatoes microplants survival

The results of studies on the effect of planting time and potato plant nutrient potency in vitro, micro plants of potato that have undergone adaptation to the yield of minitubers from a unit area. It was established that the first planting period (June 10) of test tubes and seedlings was optimal. The overall survival rate averaged 82.0%. The early planting period promoted an increase in the reproduction rate to 4.8 tubers from the bush. The yield of minitubers was 326.5 thousand pieces / ha. Sealing of landings to 142.8 thousand pieces/ha reduced the survival rate by 5.7% and the multiplication factor by 0.2 pcs. club / bush in comparison with the density of planting 71,4 thousand pieces / ha, but significantly increased the density of standing of plants in comparison with this density by 41.6 thousand pieces / ha (45.6%), with recommended ( 95.2 thousand pieces / ha) - by 34.1 thousand units / ha (37.4%). The number of minitubers increased to 347.1 thousand pieces / ha. The use of agrotechnological methods that allow rooting of plants before planting into the soil allowed to increase the plant survival rate up to 71.2%, the density of plants standing up to 73.2 thousand pieces / ha, the breeding multiplication factor increased to 4.9 pieces. club. / bush. The output of minitubers increased by 22.2%. The maximum yield of tubers equal to 466.4 thousand pieces/ha formed rooted plants planted on June 10 with a density of planting to 142.8 thousand pieces/ha. The profitability of the mini-tuber production technology based on the use of rooted plants was 213.4%, the net income (6915.1 thousand rubles) exceeded the figures of this value in comparison with the adopted production technology by 34.6%.