ACTION OF THE GROWTH REGULATOR ZEREBRA AGRO ON WHITE LUPIN GROWTH AND PRODUCTIVITY
2020
Yagovenko, G.L. | Yagovenko, T.V. | Pigareva, S.A. | Troshina, L.V.
Estimation of action of the growth regulator Zerebra agro on growth, photosynthesis, yield structure elements of the white lupin varieties Pilgrim and Alyi parus is given. The varieties differ on the growth rates. Its effect on anthracnose infection level of lupin plants is shown. Treatments of white lupin plants of the vars. Pilgrim and Alyi parus at the stage of the 2-3- rd real leaves and at the bud formation stage had positive effect on the lupin plants growth. Proof of this is the weight increasing of leaves by 28.7 and 28.2%, of stems – by 24.2 and 10.3%, roots – by 18.1 and 41.4%, nodules – by 38.1 and 62.5%, pods – by 20.7 and 16.9% per 1 m2 respectively. The effective action of the treatment on photosynthetic parameters was established: leaves surface per 1 m2 of the crop of var. Pilgrim increased by 12.5% and of the var. Alyi parus – by 4.5 photosynthetic potential (PP) increased by 2.6 and 5.7% respectively. The test chemical stimulated the chlorophyll synthesis and accumulation in leaves of lupin plants. The effect of the chemical on the linear stem density (LSD) was noticed. The LSD of the plants of the late var. Alyi parus was higher (78.0 mg/cm) compared to the early var. Pilgrim (45.5 mg/cm). The treatments increased this parameter by 14.1 and 27.5% respectively. The level of the phenol compounds’ sum increased. It increased by 22.2% in the var. Pilgrim and by 18.2% in the var. Alyi parus compared with the standard. The different response level of the tested varieties to the treatment with the growth regulator Zerebra agro was revealed.
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