Tag Archives: assimilation apparatus

255–272 M. Kolesnikov, Yu. Pashchenko, T. Tymoshchuk, N. Plotnytska, N. Hrytsiuk and O. Nevmerzhytska
Integrated application of microbial inoculant and biostimulants enhances pea bioproductivity in semi-arid conditions of the Steppe zone
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Integrated application of microbial inoculant and biostimulants enhances pea bioproductivity in semi-arid conditions of the Steppe zone

M. Kolesnikov¹*, Yu. Pashchenko¹, T. Tymoshchuk², N. Plotnytska², N. Hrytsiuk² and O. Nevmerzhytska²

¹Dmytro Motornyi Tavria State Agrotechnological University, Agrotechnology and Ecology Faculty, Department of crop production and horticulture, 226 Soborny Avenue, UA69006 Zaporizhzhia, Ukraine
²Polissia National University, Agronomу Faculty, Department of Health of Phytocenoses and Trophology, 7 Staryi Blvd., UA10008 Zhytomyr, Ukraine
*Correspondence: maksym.kolesnikov@tsatu.edu.ua

Abstract:

Pea crops are unable to realize their genetic potential, and yields are reduced due to unfavourable abiotic factors inherent in the semi-arid zone. The research aimed to determine the separate and integrated effects of biostimulants and microbial inoculant on the formation of root nodules, assimilation apparatus, and yield of pea of the Devyz variety in the semi-arid conditions of the Steppe of Ukraine. The biostimulants Stimpo (St), Regoplant (Rp), and microbial inoculant Rhyzohumin (Rhh) were used for pre-sowing treatment, and then biostimulants foliar treatment of pea crops was applied in the budding phase at concentrations described in the methodology. It was found that under the combined use of biostimulants with inoculant, the number of nodules and their weight increased by 33–40% and 9–17% respectively, compared with variants where preparations were used separately. The studied preparations increased the leaf area index of pea crops by up to 1.5 times (BBCH 12–17) and 1.6 times (BBCH 51–79). The combined use of Rhh+St and Rhh+Rp allowed the formation of a larger leaf surface area of pea crops. In the case of the integrated effect of Rhh+St and Rhh+Rp, the net productivity of photosynthesis of pea exceeded the indicator of the variants with separate application of the preparations on BBCH 61–79. Improvement of crop structural elements increased pea yield by 3.0%, 4.5%, 7.9%, 17.9%, and 13.9% compared with the control when using Rhh, St, Rp, Rhh+St, and Rhh+Rp, respectively. The obtained data indicate the presence of a combined interaction between biostimulants and microbial inoculant.

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206–219 V.A. Mazur, H.V. Pantsyreva, K.V. Mazur and I.M. Didur
Influence of the assimilation apparatus and productivity of white lupine plants
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Influence of the assimilation apparatus and productivity of white lupine plants

V.A. Mazur, H.V. Pantsyreva*, K.V. Mazur and I.M. Didur

Vinnytsia National Agrarian University, Soniachna street 3, UA21008 Vinnytsia, Ukraine,
*Correspondence: pantsyreva@vsau.vin.ua

Abstract:

Artificial regulation of the growth and development of cultivated plants aimed to increase biological productivity and improve the quality of eco-friendly products is an important goal of modern agricultural production. Application of the natural growth stimulators and bacterial agents is quite relevant and effective. The field research was conducted on the basis of the research farm ‘Agronomichne’ of Vinnytsia National Agrarian University, village Agronomichne, Vinnytsa district, Vinnytsia region, Ukraine. Features of the growth and development of white lupine (Lupinus albus L.) plants are examined. There has been established a positive effect of the combination of inoculation with the bacterial agent and growth stimulator on the productivity of white lupine, which is important for the formation of high and stable yields. The papers presents the results of studies on the effect of pre-sowing seed treatment and foliar nutrion under conditions of the right-bank Forest-Steppe of Ukraine on the assimilation apparatus of white lupine plants. It has been established that bacterial agents and growth stimulators increase white lupine productivity due to optimization of the studied technological methods of cultivation. The optimal leaf surface area that provided maximum grain yield has been determined. The research has established a positive effect of pre-sowing seed treatment with the bacterial agent Rhizohumin and the growth stimulator Emistym C and foliar nutrition with Emistym C on the chlorophyll content in the white lupine leaves. The influence of the investigated technological methods on the formation of the assimilation surface area and chlorophyll synthesis in the leaves of white lupine has been proved. The preparations studied induce intensive development of the photosynthetic apparatus, yield increase, improvement of the yield structure and they improve grain quality under conditions of right-bank Forest-Steppe of Ukraine. The issue of seed bacterization and application of growth stimulators requires a more detailed study. Therefore, such researches are relevant and significance in terms of both practical and scientific value.

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