2020,    № 3 (41)    

GENERAL AGRICULTURE, PLANT GROWING




Usanova Z.I., Pryadein S.E., Pavlov M.N.

Productivity of potato varieties with purple tuber pulp in non-root feeding with growth-stimulating preparations

There are results of research carried out in a three – factor field experiment with new varieties of potatoes (Solanum tuberosum L.) in 2017-2019 on sod-podzolic light-loamy well-cultivated soil in the crop rotation of IP, the Head of the farm “Ankinovich”. In the experiment, the following factors were studied: a-background of mineral nutrition (a moderate dose of NPK for a crop of 30 t/ha, optimal-for 40 t / ha); B – variety (Scarb, control, Northern lights with blue – mottled flesh, Amethyst with purple tuber pulp); C – non – root feeding (water, control, preparations-Humatador, Humat+7) twice during the vegetation period. It is shown that the higher size of the maximum leaf area (51.0 – 54.0 thousand m2 x day/ha) and FPP (1792.6 – 1928.6 thousand m2 x day/ha) was created by The amethyst variety on both backgrounds of mineral nutrition. Non-root fertilizing with humic preparations, as a rule, increased the FPP and productivity of potatoes. Varieties Skarb and Amethyst increased the formation of tubers on the plant, their number on the optimal background increased from feeding with HUMATE+7 by 3.5 and 3.6 PCs., and the mass of tubers per plant in the varieties Skarb, Northern lights, Amethyst, respectively, by 240, 247 and 444 g or 24.2; 21.8 and 42.2%. The greatest increase in yield of new varieties of Northern lights and Amethyst on both backgrounds of mineral nutrition was provided by some fertilizing with HUMATE+7: on a moderate background, 5.47 and 9.44 t / ha (14.9 and 26.4%), on an increased 12.43 and 18.11 t/ha (29.0 and 41.1%). The maximum yield was obtained for the amethyst variety-62.14 t / ha on an optimal background of mineral nutrition with non-root top-dressing with HUMATE + 7

Keywords:POTATOES, VARIETIES, BACKGROUND OF MINERAL NUTRITION, FOLIAR FEEDING, PHOTOSYNTHETIC ACTIVITY, YIELD, STRUCTURE