Yieldcapacity of soybean varieties with various vegetation periods, depending on sowing time in the Eastern Forest-Steppe of Ukraine

2021 ◽  
Vol 2020 (1-2) ◽  
pp. 95-103
Author(s):  
Y.M. Ohurtsov ◽  
О.О. Loshak
Keyword(s):  
Thermal Conditions ◽  
Weather Conditions ◽  
Forest Steppe ◽  
Hydrothermal Conditions ◽  
Sowing Time ◽  
Growing Period ◽  
Universal Approach ◽  
Primary Determinant ◽  
Leaf Surface Area ◽  
Soybean Plants

Sowing is one of the most important agronomic measures in soybean cultivation. However, today in Ukraine there is no universal approach to defining the optimal sowing time. Some researchers assert that one should rely on the calendar period of sowing; other specialists argue that the spring features should be the primary determinant; the third group think that the thermal conditions at a depth of 10 cm is the main factor; and according to the fourth opinion, soil and clime characteristics are critical. The hydrothermal conditions in the years of our research deviated significantly from the annual average. Thus, the hydrothermal coefficient during the soybean growing period in 2018 was 0.34, and in 2019 it was 0.52, indicating that the cultivation conditions were arid (0.5 <HTC <0.9). The experiments showed a clear downward trend in the growing period length and upward trends in the field germinability of seeds and leaf surface area when soybean was sown in soil warmed to 14-16оС on May 10-15. In this case, the biometric parameters of soybean plants improved, and the yield increased by 0.15-0.16 t/ha. Keywords: soybean varieties, weather conditions, sowing time, field germinability of seeds, plant survival, photosynthetic and symbiotic activities of plants, grain yield.

scholarly journals DYNAMICS OF FORMATION OF THE SQUARE OF BEETS PLANTS OF BEETS DEPENDING ON VARIETY SPECIAL FEATURES AND TERMS OF SEEDING UNDER CONDITIONS OF THE RIGHT-FOREST STEPPE OF UKRAINE

2019 ◽  
pp. 173-182
Author(s):  
Inna Palamarchuk
Keyword(s):  
Aerial Part ◽  
Root Formation ◽  
Weather Conditions ◽  
Forest Steppe ◽  
Sowing Time ◽  
The Third ◽  
Sowing Dates ◽  
Number Of Leaves ◽  
The Right ◽  
Sowing Period

The results of studies on the dynamics of the formation of the area of leaves of plants of beetroot canteen depending on varietal characteristics and sowing time in the conditions of the Forest-Steppe of Right-Bank Ukraine are presented. The dependence of the growth and development of beetroot plants on varietal characteristics and sowing dates, as well as on weather conditions that were in the studied time, was revealed. The largest number of leaves in the phase of intensive root formation was formed by plants with a sowing period of I decade of May: 13.3 pcs. / plant – Bordo Kharkivskiy, 13.1 pcs. / plant – Opolskiy. The greatest mass of the root crop in the phase of intensive root formation was planted at a sowing period of the third decade of April: the Bordo Kharkivskiy – 72.4 g, the variety Opolskiy – 43.5 g. The same pattern was observed when taking into account the mass of the aerial part of beetroot. In the Bordo Kharkivskiy variety, it varied from 92.4 g to 87.5 g depending on the sowing time, in the Opolskiy variety from 33.7 g to 31.7 g, that is, the beet plants of the Bordo Kharkivskiy cultivar formed a significantly larger mass of the aerial part in comparison with the Opolskiy variety. Plants were sown with the largest leaf area at a sowing period of the 3rd decade of April: in the Bordo Kharkivskiy – 1.2 – 4.0 thousand m2 / ha, in the Opolskiy variety – 1.0 – 2.3 thousand m2 / ha. According to the results of the crop accounting, it was found that it depended on the variety and sowing period of beetroot. On average, over the years of research, the highest yield was observed with a sowing period of the third decade of April: 63.1 t / ha for the Bordo Kharkivskiy variety, 55.9 t / ha for the Opolskiy variety.

scholarly journals Varietal features of photosynthetic activity of Tyumen seed oats when applying mineral fertilizers

2021 ◽  
Vol 215 (12) ◽  
pp. 59-76
Author(s):  
Anna Lyubimova ◽  
Dmitriy Eremin
Keyword(s):  
Biomass Accumulation ◽  
Net Photosynthesis ◽  
Weather Conditions ◽  
Mineral Fertilizers ◽  
Forest Steppe ◽  
Northern Forest ◽  
Net Productivity ◽  
Leaf Surface Area ◽  
Photosynthetic Potential ◽  
First Time

Abstract. The purpose is to study the varietal characteristics of the photosynthetic efficiency of oats when applying fertilizers in Western Siberia. Methods. The research was carried out on an experimental field located in the northern forest-steppe of the Trans-Urals. Photosynthetic potential and net productivity of photosynthesis were determined by the Nichiporovich’s method. Results. The nature of the formation of the assimilation surface and the accumulation of biomass of oat varieties Otrada, Talisman and Foma at different levels of mineral nutrition was studied. The photosynthetic potential and the net productivity of photosynthesis are calculated. The share of the influence of weather conditions, agrophone and variety on the studied indicators is determined. The Foma variety was characterized by maximum leafiness, compared to the Talisman and Otrada. On a natural agrophone, its assimilation surface in the sweeping phase reached 36.0 ± 5.5 thousand m2, at Otrada and Talisman – 28.1 and 24.0 thousand m2 per 1 ha of sowing. A very strong variability of the leaf surface area in Otrada was revealed (Cv = 24 %). The use of mineral fertilizers enhances the development of the leaf apparatus by 44–50 % and causes competition between oat plants. A close positive correlation was revealed between the leaf area in the sweeping phase and yield (r = 0.72). The area of the assimilation surface of oats is affected by: weather conditions – 37 %; nutrition level – 30 % and variety – 25 %. It was found that the Otrada and Foma varieties have the same accumulation dynamics and form the maximum photosynthetic biomass by the sweeping phase. The nature of biomass accumulation depends on weather conditions by 39 %; on mineral fertilizers by 29 % and on the genotype of the variety by 17 %. The productivity of the studied varieties is formed by increasing the assimilation surface, rather than increasing the efficiency of photosynthesis. Scientific novelty. For the first time, the photosynthetic potential was determined and the efficiency of the net photosynthesis productivity of oat varieties of the Tyumen selection was revealed. The share of the influence of various factors in the formation of the oat crop in the conditions of the Northern Trans-Urals has been established.

scholarly journals On the Quality of Bare-Grained Oats and Influence of its Cultivation Technology Elements on the Yie

2021 ◽  
Vol 14 (4) ◽  
pp. 1754-1759
Author(s):  
Elena Anatolyevna Yegushova
Keyword(s):  
Quality Indicators ◽  
Early Period ◽  
Weather Conditions ◽  
Steppe Zone ◽  
Forest Steppe ◽  
Seeding Rate ◽  
Sowing Time ◽  
Northern Forest ◽  
Pure Steam ◽  
Sowing Period

The research was carried out with the aim to establish the formation regularity of both yield and its elements, as well as to formulate technological and quality indicators of bare-grained oats under the influence of different sowing periods. The studies were carried out in the conditions of the northern forest-steppe zone of the Kemerovo region (Russia) on the territory belonging to the Kemerovo Research Institute of Agriculture, a branch of the SFNCA RAS in 2018-2019. The soil of the site is leached chernozem, heavy loamy in granulometric composition, of medium thickness. The object of research was the mid-season variety of bare-grained oats Bare-grained. The predecessor is pure steam. Sowing was carried out in three periods: early – on May 4 (when the soil was physically ripe, subsequent ones with an interval of 8-10 days, depending on the prevailing weather conditions), medium - on May 12 and 14, late - on May 20 and 24. Against the background of each sowing period, the seeding rates of 4.0 were studied; 4.5; 5.0; 5.5; 6.0 million crops/ha. It has been established that the optimal sowing time for obtaining high quantitative indicators (yield, number of grains, grain size) of bare-grained oats in the northern forest-steppe of the Kemerovo region is an early period (first decade of May); while a later period (third decade of May) is more promising for such high-quality indicators as protein content, fat in grain, essential and nonessential amino acids, etc. The optimal seeding rate for bare-grained oats at early sowing period is 4.0-4.5 million/ha. At a later period, it is advisable to increase the seeding rate to 5.0-5.5 million/ha.

scholarly journals VARIABILITY OF BEAN VARIETIES SAMPLE BY YIELD STRUCTURE STRUCTURE AND ADAPTABILITY

2020 ◽  
pp. 198-222
Author(s):  
Olena Mazur
Keyword(s):  
Common Bean ◽  
Plant Genetic Resources ◽  
Weather Conditions ◽  
Research Area ◽  
Plant Production ◽  
Forest Steppe ◽  
Biological Traits ◽  
Seeding Rate ◽  
Hydrothermal Conditions ◽  
Growing Conditions

The study of quantitative characteristics controlled by polymer genes is rather complicated due to their significant variability, depends on the environment conditions, and the general picture of their inheritance and variability is masked by the modifying action of heterosis in the first generation. New varieties should have a balanced development of all elements of productivity, resistance to abiotic and biotic factors, and not just the maximum value of the individual characteristic. Plant growing conditions are important in forming their resistance to various diseases. In nature, pathogens and plants are affected by the weather conditions that are constantly changing. The research objective was to determine the variability level and to identify the patterns of inheritance of valuable commercial-biological traits for the selection of productive and adaptive forms of common bean (Phaseolus vulgaris L.). The research was conducted during 2014–2016 in the conditions of the research plot of the Department of Plant Production, Selection and Bioenergetic Cultures of Vinnytsia National Agrarian University. The region of the research by its natural conditions refers to the central subzone of the Right Bank Forest-Steppe. The hydrothermal conditions of the 2014 and 2016 surveys were typical of the average yearly indices of the research area and the year 2015 was characterized by a significant deficiency of precipitation and high temperature air conditions. The research material were the varieties of common bean provided by the National Center for Plant Genetic Resources of Ukraine and hybrid combinations obtained as a result of intervarietal crossings. Sowing was carried out by the temperature regime of soil 10–12 °С at the depth of seeding and stable increase of average daily air temperature. The placement of the plots was consistent, the varieties were sown in a six-time repetition. The wide-row sowing with a width of rows of 45 cm was used. The total area of the plots was 1.35 m², and the account one is 1.0 m². Sowing was carried out with the seeding rate of 18 similar seeds per 1 linear meter, the standard was placed in 10 numbers. The general adaptability of the common bean varieties for the research years was determined by regression coefficient (bi) and the stability variance (Sі2). Assessment of the morphological features variation was carried out by the variationcoefficient (V, %). The ecological variation coefficient (Vе, %) was determined by the ratio of the average sign to its standard deviation. The determination of ultrastability (Nom) and agronomic stability coefficient (As) was made. Conclusions. As a result of the three year research, it was established that the highest resistance to bacteriosis had such varieties as UD0303601, UD0303526, UD0303543 and UD0303557. The varieties UD0303601, UD0303526 were resistant under adverse growing conditions; the highest resistance to bacterial wilding, including under adverse growing conditions, was provided by the varieties UD0300414, UD0301063 and UD0303543; according to the resistance to variegation the following varieties were selected: UD0303543, UD0303557, and UD0303610 (they were better under all growing conditions). Key words: bean varieties, elements of crop structure coefficient of variation, variability.

Typical hydrothermal conditions of the Right-bank Forest-step zone and their influence on corn productivity

2019 ◽  
pp. 55-64
Author(s):  
A. Malienko ◽  
N. Borys
Keyword(s):  
Sharp Decrease ◽  
Weather Conditions ◽  
Vegetation Period ◽  
Forest Steppe ◽  
Corn Yield ◽  
Hydrothermal Conditions ◽  
Hydrothermal Coefficient ◽  
Adverse Weather ◽  
Corn Productivity ◽  
The Right

Corn is a highly productive crop of universal purpose, which is grown for food – 20–25 %, forage – 60–65 and technical purposes – 15–20 %. Increasing its yield is possible due to the improvement of the elements of the technology of cultivation taking into account biological characteristics. The growth and development of corn, the production of high yields, as well as the improvement of the quality of the main products are determined by factors of anthropogenic origin and weather conditions. Hydrothermal conditions of Ukraine have already begun to change significantly during the last decades, which resulted in a shift in the climatic seasons, changes in the vegetation period duration (depending on the zone and the biological features of the crops it can either decrease or expand), the decrease in the duration of a stable snow cover, changes in water resources of local drainage. The period 2005–2016 was analyzed for the reliable estimation of the typicality of weather conditions and their influence on the corn productivity under the following basic cultivation methods: ploughing at the depth of 28–30 cm (control), flat-cut tilling at the depth of 28–30 сm, chisel ploughing at the depth of 43–45 cm and disking at the depth of 10–12 cm. The dynamics of precipitation in the northern part of the Right Bank Forest Steppe during the corn vegetation period for the last 2005–2016 testifies to the noticeable tendency of increasing the amount of precipitation in May-June and their sharp decrease in July-August. It was determined that the conditions for eight years – 2006–2008, 2011–2014 and 2016 were optimal for their hydrothermal indices for the production of corn yields at the level of 5.83–9.47 t/ha. The hydrothermal coefficient for vegetation was 1.13–1.76. Weather conditions were unfavorable in 2005, 2009–2010, and 2015 with the amount of precipitation for vegetation of 120–288 mm, which is below the long-term amount by 120 mm, or 36 %. The peculiarity of these years was 37–61 % lower precipitation level in June–July with the grain yield of 3.12–6.51 t/ha. The mathematical-statistical analysis allows to characterize features and typicality of weather conditions of 2005–2016 and to estimate the influence of hydrothermal years and separate months on corn crops productivity. It has been established that there is the following correlation between weather conditions in July and the yield of corn: high correlation for disk soil cultivation (r=0.75–0.86), the average – for ploughing and chyzel loosening (r=0.49–0.53). Thus, the formation of a deep layer of soil with the best water–physical characteristics and fertility in these cultivation modes reduced the dependence of the elements of yield formation from the adverse weather conditions and provided a higher yield of corn by 6.0–8.0 %. Key words: hydrothermal conditions, hydrothermal coefficient (HTC), vegetation period, corn yield.

scholarly journals Nutrients use efficiency by modern hybrids of maize under arid conditions of the Forest-Steppe

2021 ◽  
pp. 49-58
Author(s):  
О.V. Kharchenko ◽  
◽  
S.V. Petrenko ◽  
M.G. Sobko ◽  
S.I. Medvid ◽  
...  
Keyword(s):  
Nutrient Use Efficiency ◽  
Weather Conditions ◽  
Relative Effect ◽  
Mineral Fertilizers ◽  
Natural Fertility ◽  
Forest Steppe ◽  
Hydrothermal Conditions ◽  
Potential Productivity ◽  
Maize Hybrids ◽  
Use Efficiency

The nutrient use efficiency of maize hybrids from the soil or through fertilizers is considered. Cultivation of modern hybrids requires determining the necessary rate of fertilizer to get the planned yield, taking into account their potential productivity and weather conditions. In the absence of data of nutrient uptake for new hybrids, it is proposed to use an indicator of their level of intensity, which is calculated by the ratio of the actual yield and its normative (calculated) value. Studies were conducted in 2018 and 2019 in the fields of the Institute of Agriculture of the Northeast of the National Academy of Agrarian Sciences of Ukraine. Soil – chernozem typical leached (Endocalcis Chernozem). Three maize (Zea mays L.) hybrids of Ukrainian selection were used: Zoryany (FAO 190), Leleka (FAO 260) and Donor (FAO 310). The vegetation seasons 2018-2019 were characterized as very arid (hydrothermal coefficient of Selianinov (HTC) 0.45-0.46). The calculated rate intensity of hybrids on average of two years was 1.07 at sites without fertilizers, and 1.36 at sites with fertilizers (N100 P45 K45). The efficiency of soils N,P,K use increases by application of mineral fertilizers. The nutrients output from the soil: nitrogen ‒ 53.8-71.4 %, phosphorus ‒ 20.0-26.6 % and potassium ‒ 65.4-86.8 %. The relative effect of fertilizers on the yield decreases, therefore, rate of natural fertility in the growth of the crop on fertilized soil increases. Due to the natural fertility of soils, the yield of all hybrids increased by an average of 1.33-1.46 t/ha with N100 P45 K45 applying. The dependence of yield of all maize hybrids on hydrothermal conditions in June was obtained. It was found that, all other things being equal, the yield is directly correlated with the FAO index of the hybrid. The payback of mineral fertilizers is estimated as 0.86-1.14 t / c

scholarly journals Ефективність застосування водорозчинних добрив під основні сільськогосподарські культури за умов зміни клімату

2013 ◽  
pp. 89-92
Author(s):  
Л. Д. Глущенко ◽  
Р. В. Олепір ◽  
О. І. Лень ◽  
В. М. Вакуленко ◽  
Б. Б. Котвіцький
Keyword(s):  
Weather Conditions ◽  
Steppe Zone ◽  
Significant Rise ◽  
Water Soluble ◽  
Forest Steppe ◽  
Left Bank ◽  
Growing Period ◽  
Average Temperature ◽  
Leading Role ◽  
Quality Of Products

За останні роки на Полтавщині в погодних умовах суттєво змінилися температурний і водний ре-жими. Протягом веґетаційного періоду 2008–2012 років спостерігалося підвищення середньомісячної температури на 1,8 0С, що більше на 13,1 % від середньої багаторічної норми та зменшення кіль-кості опадів на 72,5 мм, або на 23,2 %. Важлива роль у підвищенні продуктивності сільськогоспо-дарських культур належить добривам. В умовах значного подорожчання енерґоносіїв та агрохімі-катів позакореневі підживлення комплексними водорозчинними добривами стають особливо ак-туальними. Застосування цього агрозаходу в умо-вах Лівобережного Лісостепу України за нестабі-льного зволоження дає можливість підвищити продуктивність пшениці озимої на 25,8 %, кукуру-дзи зернової на 12,7 %, буряків цукрових на 15,7 % і суттєво поліпшити якість продукції. Temperature and water regimes have changed over the past few years in Poltava in the weather conditions. So during the growing period of 2008–2012, an increase in the average temperature of 1.8 0C, an increase of 13.1% from the average long-term rates and a decrease in rainfall at 72.5 mm, or 23.2% was observed. The leading role in increasing the productivity of crops belongs to fertilizers. With the significant rise in price of energy and agrochemicals, foliar feeding by complex water-soluble fertilizers becomes particularly relevant. The use of this agro method in the left-bank forest-steppe zone of Ukraine with not persistent moisture makes it possible to increase the productivity of winter wheat by 25.8%, corn grain by 12.7%, sugar beet by 15.7%, and significantly improve the quality of products.

scholarly journals Effect of zinc application on the maize

2019 ◽  
pp. 8-14
Author(s):  
E.A. Zakharchenko
Keyword(s):  
Seed Treatment ◽  
Leaf Surface ◽  
Weather Conditions ◽  
Maize Yield ◽  
Growth And Yield ◽  
Forest Steppe ◽  
Left Bank ◽  
Leaf Surface Area ◽  
Maize Yields ◽  
Zinc Application

The article presents the results of field experience in studying the effect of zinc-containing fertilizers on the growth and yield of maize. The experiment was carried out under typical loamy chernozem in the loess of the Left-Bank Forest-Steppe (Sumy region, Sumy oblast). The following plots were studied: 1) control; 2) pre-sowing treatment of corn seeds with Monozinc, 3) treatment of seeds with Monozinc + spraying in the phase of 3-5 leaves Nutrivant Plus (0.5 l/ha); 4) seed treatment with Monozinc + spraying Nutrivant Plus in the phase of 3‒5 leaves (0.5 l/ha) and 10-11 leaves (1 l/ha). Zn monocinc from «Compo» (Germany) and Nutrivant Plus grain from «ICL Fertilizers» (Israel) were used, a hybrid of corn was Inagua (FAO 210, France). An increasing of the leaf surface area, plant height, height of the main ear in maize and yield under zinc fertilizers application has been established. The height of the main ear in maize was at the level of 72‒78 cm, the application of fertilizers slightly increased this indicator. The zinc application clearly influenced on the increasing of maize yields, but their effectiveness more depended on weather conditions. Under stress, the application of Nutrivant gave a larger increasing of grain yield. The maize yield increased to 0.35 t/ha under Monozinc seed treatment and with foliar top dressing with a Nutrivant plus 0.73, two-time top dressing ‒ 0.97 t/ha. On average, over two years of research, the weight of 1000 seeds in the control was 301.1 g, in fertilized plots ‒ 303.8‒310.9 g. The weight of grain in the treatment 2 was 2.1 g, in the 3 ‒ 5.8 g and on the 4-th ‒ 9.7 g. Monozinc treatment of seeds leads to increased germination energy to 3.1 % (compared to control), field and laboratory germination to 3.3 and 3.0 %, respectively.  

Zonal pathogen complex of sunflower in the left bank Forest-Steppe of Ukraine

2018 ◽  
Vol 5 (1) ◽  
pp. 67-72
Author(s):  
I. Borovskaya ◽  
V. Petrenkova
Keyword(s):  
Downy Mildew ◽  
Weather Conditions ◽  
Growing Season ◽  
Gray Mold ◽  
Plant Production ◽  
Forest Steppe ◽  
Left Bank ◽  
Hydrothermal Conditions ◽  
Dry Rot ◽  
Charcoal Rot

Aim. To determine a set of sunfl ower pathogens and their variability infl uenced by hydrothermal conditions of the crop growing season. Methods. Over the period of 2007–2016, due to phytosanitary monitoring of breeding crops of the scientifi c crop rotation of the Plant Production Institute named after V.Ya. Yuriev of NAAS, the prevalence degree, development intensity and variability of sunfl ower diseases in the Eastern Forest-Steppe of Ukraine were estimated. The hydrothermal coeffi cient (HTC) is presented for the sunfl ower growing season and by developmental phases of the crop. Results. Phomopsis blight (Phomopsis/Diaporthe helianthi Munt.- Cvet. et al.), gray mold (Botrytis cinerea Pers.), dry rot (Rhizopus sp.), charcoal rot (Sclerotium bataticolaTaub), and downy mildew (Plasmopara helianthi Novot. f. helianthi) were the most common diseases on sunfl ower in the Eastern Forest-Steppe of Ukraine in 2007–2016. The weather conditions of 2007–2016 considerably varied and were characterized by fl uctuations in the hydrothermal coeffi cient (HTC) from 0.57 in 2009 to 1.1 in 2014. Assessing the incidence of the fi ve most common and harmful sunfl ower diseases (dry rot, charcoal rot, gray mold, Phomopsis blight, downy mildew) by cluster analysis for the ten-year study period in relation to the weather conditions of a year, we found that both dry and charcoal rots were co-associated with aridity, while downy mildew and gray mold were frequently promoted by waterlogging during a certain period of sunfl ower development. Unlike the other diseases, Phomopsis blight, being an annual disease, appears to have no clear dependence on any specifi c conditions. Conclusions. Based on the phytosanitary monitoring results of crops in the Eastern Forest-Steppe of Ukraine, the sunfl ower phytopathogen complex composition was determined. The prevalence degrees for Phomopsis blight, gray mold, dry rot, charcoal rot, and downy mildew as well as the development intensities of Phomopsis and gray mold were established. The co-incidence of the fi ve most harmful sunfl ower diseases in the Eastern Forest-Steppe of Ukraine (dry rot, charcoal rot, gray mold, Phomopsis blight, downy mildew) was evaluated during the ten-year study period, depending on the weather conditions of a year.

scholarly journals Influence of hydrothermal conditions on the duration of the phenophase of common beans at different sowing dates in the forest-steppe conditions of the Ob region

2021 ◽  
pp. 36-44
Author(s):  
D. A. Kolupaev ◽  
O. E. Iakubenko ◽  
O. V. Parkina
Keyword(s):  
Growing Season ◽  
Forest Steppe ◽  
Common Beans ◽  
Hydrothermal Conditions ◽  
Sowing Time ◽  
Sowing Dates ◽  
The Difference ◽  
Optimal Average ◽  
Phenological Phases ◽  
Sum Of Active Temperatures

The influence of hydrothermal conditions on the duration of phaseolus vulgaris L. phenophases of the grain direction at different sowing dates in the forest-steppe conditions of the Ob region was studied. The research was carried out on the experimental field of the training and production farm «Sad Michurintsev» at the Novosibirsk State Agrarian University. The objects of the study were the Rubin variety and the promising variety Krasno-pestriy. The structure of the growing season was studied and the samples were assessed by the duration of individual phenological phases. The influence of hydrothermal conditions on the change in the duration of the «sowing-emergence» interphase period was established at different sowing periods (up to 8 days) and the «seedlings-flowering» and «flowering-biological ripeness’ periods (up to 4 days). A one-way analysis of variance was carried out with a confidence interval of 5%. The optimal average sum of active temperatures for the passage of the main phenological phases «sowing-germination», «seedling-flowering» and «flowering-biological ripeness’ has been established: in Rubin it is 244, 518 and 709оС, and Krasno-pestriy is 241, 564 and 760оС, respectively. A relationship between the duration of the growing season and the average daily temperature (–0.90), the sum of temperatures (0.96), the duration of the growing season and the sum of precipitation (0.90) was revealed. The difference in precipitation of growing seasons at different sowing dates is insignificant and ranges from 120 to 131 mm. According to the results of the study, the recommended sowing time for the main groups of beans ripeness in the foreststeppe conditions of the Ob region is the second half of May.

Sign in / Sign up

Export Citation Format

Share Document