A.N. Postnikov, E.V. Zolnikova
Russian State Agrarian University – Moscow Timiryazev Agricultural Academy, Russia, Moscow, Timiryazevskaya Str., 49
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Summary. In the article the results of the research of the reaction of fodder beet (Beta vulgaris L.) and rutabaga (Brassica napus rapifera L.) of the second year of life on the effects of physiological means of regulation of growth and development – IAA (indolyl-3-acetic acid), Appin-extra, 6BAP (6-benzylaminopurine) applied early in the second critical phase of ontogenesis in the first year of vegetation are presented. The effect of this impact on the productivity of seeds and their quality is studied. The experiments were carried out at the Experimental station of the farming at Russian State Agrarian University – Moscow Timiryazev Agricultural Academy in 2011-2013 in the plots with sod – podzolic, middle loam soil and pH 5,6…6,3. On fodder beet the reduction of the number of first order branches from 20,8 in control variant to 10,9 – under processing IAA and to 16,7 – Appin – extra; second order from 225,6 in control variant to 128,6 – under processing IAA and 186,4 – 6 BAP was observed the number of branches of third order decreased options treatments growth regulators Appin – extra on 23,3 PCs and 6BAP on 2,4 PCs, treatment of growth regulator IAA has led to an increase of branches of third order 10,7 PCs. The rutabaga also noticed an increase of compactness plants, especially under processing the growth regulator 6 BAP: reduction of the branches of all orders was almost 2 times. The average mass of viable stems from plants varied on beet from 51,4 g in the control variant to 77,3 g per plant under processing IAA, on rutabaga – from 35,6 g in the control variant to 53,1 g per plant under processing IAA.
Keywords: beetroot, rutabaga, regulation of growth, seed productivity.