THE INFLUENCE OF HETEROAUXIN STIMULATOR ON SEED SIMILARITY AND SEEDLING GROWTH OF TULIP TREE (Liriodendron tulipifera)

Authors

S.K. Kojakhmetov Doctor of agricultural sciences, Professor of Forest research institute
Kh.K. Yuldashev Senior researcher of Forest research institute
Ya.Kh. Yuldashov Professor, head of the “Forestry” department of Tashkent state agrarian university

Keywords:

seed germination, seedlings, growth stimulator, biometric indicators

Abstract

The article presents the research results on the seeding rates of seeds and a tulip tree seedlings output in a typical serozem conditions of Tashkent region. Sowing tulip tree seeds in normal is 1 kg/m² without heteroauxin processing ensured the seedlings yield 350 thousand/ha, a with 100 mg/l heteroauxin processing 1010 thousand/ha, then at 2 kg/m2 rate - 520 thousand/ha, and with processing with 200 mg/l heteroauxin - 1820 thousand/piece per hectare.