Influence of intensification factors on photosynthetic productivity and yield of winter barley in the condition of Western Forest-Steppe

Abstract. The purpose of the work is to study the influence of the growth regulator “Regoplant” and microfertilizer “Ultramag Kombi” on the photosynthetic productivity of the potatoes of the Barna variety based on the results of field experiments in the forest-steppe zone Republic of North Ossetia-Alania. Methods. Studies on the tasks were carried out in 2018–2020. at the experimental site of the NCRIMFA branch of the VSC of RAS in the conditions of the forest-steppe zone Republic of North Ossetia-Alania according to generally accepted methods. The soil of the experimental plot is medium-power heavy loamy leached chernozem, lined with pebbles. Results. It is established, that biological products under identical soil and weather conditions assisted different progress of plants and approach of phases of vegetation. For all variants of the experiment, the number of stems increased by 0,3–0,7 pcs., the height of the stems of potato plants – by 3,8–4,9 cm in comparison with the control. An intense increase in the mass of tops occurred when using a tank mixture (growth regulator “Regoplant” (25 ml/ha) + microfertilizer “Ultramag Combi” (0,75 l/ha)) – by 74 g/bush, or 15.5 % compared with the control variant. During the growing season, the sum of the photosynthetic potential (FP) was 1,070 thousand m2 •days/ha in the control, and on average 1198–1406 thousand m2•days/ha in the experimental variants. The greatest accumulation of dry matter was noted when using a tank mixture – 917 g/m2. The maximum pure photosynthetic productivity was observed in experimental variant IV – 6,52 g/m2•day compared to the control option. Scientific novelty. For the first time in the forest-steppe zone Republic of North Ossetia-Alania the effect of the growth regulator “Regoplant” and microfertilizer “Ultramag Kombi” on photosynthetic activity of potatoes was studied. Practical significance. The studies carried out make it possible to recommend in potato production the use of a tank mixture of an effective growth regulator “Regoplant” at a dose of 25 ml/ha and microfertilizer “Ultramag Combi” at a dose of 0,75 l/ha, as an ecologically safe and low-cost agricultural method when processing vegetative plants, providing an increase in yield and quality of tubers.

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FORMATION OF PHOTOSYNTHETIC PRODUCTIVITY OF SOYBEAN CROPS FOR THE USE OF DIFFERENT TYPES OF FUNGICIDES AND INOCULANTS IN THE RIGHT-BANK FOREST-STEPPE OF UKRAINE

Bulletin of Uman National University of Horticulture ◽

10.31395/2310-0478-2018-21-21-24 ◽

2018 ◽

pp. 21-24

Author(s):

I.I. Mostoviak ◽

◽

O.V. Kravchenko ◽

Keyword(s):

Forest Steppe ◽

Photosynthetic Productivity ◽

Different Types ◽

The Right

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Influence of fertilization and fungicide on increasing the winter barley productivity

Agrobìologìâ ◽

10.33245/2310-9270-2020-157-1-104-110 ◽

2020 ◽

pp. 104-110

Author(s):

M. Matkovska

Keyword(s):

Powdery Mildew ◽

Plant Protection ◽

Spot Blotch ◽

Winter Barley ◽

Mineral Fertilizers ◽

Forest Steppe ◽

Net Blotch ◽

Yield Increase ◽

Dose Rates ◽

Effi Ciency

The article represents the results of research for 2016–2018 in the condition of Western Forest-Steppe of Ukraine. The yield of winter barley obtained under various fungicide treatment and three diff erent fertilization dose rates of (N40P30K40, N80P60K80, N120P90K120) was compared in the study The influence of mineral fertilizers on the diseases development was studied along with fungicides application effi ciency for the following diseases of Wintmalt variety of winter barley: net blotch, powdery mildew, and spot blotch. Three major diseases were observed in barley crops during the research years: net blotch, powdery mildew and spot blotch. It has been established that increasing the level of fertilization contributes to the increase of disease development in barley crops. Thus, the highest level of net blotch (51.7 %), spot blotch (15.4 %) and powdery mildew (17.5 %) was observed on the variant of N120P90K120. High effi ciency of the studied fungicides was established. The highest technical effi cacy of the preparations was obtained on the variant of Systiva 1,5 l/t + Adexar Plus 1,0 l/ha in the stage of the fl ag leaf. The results of the studies showed that the highest yield (9.27 t/ha) of the Wintmalt variety of winter barley under the studied conditions was obtained on the variant of complete mineral fertilization N120P90K120 and the treatment of fungicide plant protection by Systiva 1.5 l/t (BBCH 00) + Adexar Plus (BBCH 39) 1.0 l/ha. The fungicide protection of Systiva applied to the seeds along with the pre-sowing treatment, ensured a yield increase of 0.64 t/ha, 0.68 t/ha and 0.77 t/ha on the N40P30K40, N80P60K80, N120P90K120 respectively. The highest yield increase compared to the control was obtained on the Systiva 1.5 l/t (BBCH 00) + Adexar Plus (BBCH 39) 1.31–1.69 t/ha depending on the dose rates of fertilization. Fungicide protection is recommended to apply to all the studied fertilizers dose rates, but the highest yield increase from the fungicides was obtained on N 120P90K120. Key words: winter barley, fungicide, Systiva, Abacus, Adexar Plus, disease, fertilizers, yield.

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Photosynthetic activity of parsnip varieties in the conditions of the Right-bank Forest-steppe of Ukraine

PLANT AND SOIL SCIENCE ◽

10.31548/agr2020.04.087 ◽

2020 ◽

Vol 11 (4) ◽

pp. 87-93

Author(s):

O. O. Komar ◽

◽

O. V. Shemetun ◽

V. O. Komar ◽

◽

...

Keyword(s):

Cost Effective ◽

Climatic Conditions ◽

High Yield ◽

Forest Steppe ◽

Plant Resources ◽

High Productivity ◽

Net Productivity ◽

Photosynthetic Productivity ◽

High Area ◽

The Right

Due to the intensification of production of parsnip, the question arises to clarify the elements of cultivation technology that should ensure its high productivity. The use of varietal plant resources is one of the most important parts of agriculture - the basis of economic and social development of the state. The most efficient and cost-effective is the widespread introduction of new varieties and hybrids with a genetically determined level of adaptation to the conditions of soil and climatic zones of their cultivation. The indicator of the dynamics of the formation of photosynthetic productivity is the basis of the yield of each crop. The purpose of the research was to study the dynamics of leaf surface formation in varieties of parsnip in the conditions of the Right-Bank Forest-Steppe of Ukraine. The studied cultivars of parsnip sowing formed a high area of active assimilation surface, the dynamics of which depends on the stage of organogenesis, soil and climatic conditions of the year and varietal characteristics. With the highest average for the growing season leaf area (49.0-49.6 thousand m2 on ha), photosynthetic potential (1.79-1.83 million m2 per day on ha) and net productivity of photosynthesis - 5.56 g on m2 per day) were characterized by varieties Stymul and Pulse in terms of other varieties. It is established that in order to obtain stably high yield (44.4-45.4 t on ha) and marketability of root crops (85-93%) in the conditions of the Right-Bank Forest-Steppe of Ukraine it is necessary to sow highly productive varieties of parsnip sowing Stymul and Pulse.

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Evaluation of the production process of potato in a changing climate in the Eastern and Western forest-steppe

Ukrainian hydrometeorological journal ◽

10.31481/uhmj.16.2015.16 ◽

2017 ◽

pp. 120-127

Author(s):

S.M. Svyderska

Keyword(s):

Climate Change ◽

Climatic Conditions ◽

Future Climate Change ◽

Forest Steppe ◽

Herbaceous Plant ◽

Climate Change Scenarios ◽

Perennial Herbaceous Plant ◽

Photosynthetic Productivity ◽

Growing Conditions ◽

The Impact

An important element of climate change is to assess changes in agro-climatic growing conditions of crops and the impact of these changes on their performance. Agriculture is the most vulnerable sector of Ukraine's economy to fluctuations and climate change. Given the inertial nature of agriculture and the dependence of the efficiency on the weather, now need to make timely and adequate solutions to complex problems caused by climate change. Due to the expected increase in air temperature of the Northern Hemisphere food security Ukraine will largely depend on how effectively adapting agriculture to future climate change. This includes advance assessment of the impact of the expected climate change on agro-climatic conditions for growing crops. Potatoes - perennial, herbaceous, plant, but in nature is treated as an annual plant, so that the life cycle, beginning with germination and ending with the formation of bubbles and the formation of mature tubers, is one growing season. Potato is one of the most important crops grown and diversified use in almost all parts of our country. But the main focus areas of potatoes in Polesie and Forest-steppe. We consider the relative performance of the photosynthetic productivity of potato and agro-climatic conditions for growing potatoes for the period 1986 to 2005, and expected their changes calculated by the climate change scenarios A1B and A2 for the period 2011 to 2050 in Eastern and Western Forest-Steppe. We consider the agrometeorological and agro-climatic conditions in which there may be a maximum performance of potato.

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