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

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.

Author(s):  
A.V. Melnyk ◽  
S.V. Zherdetska ◽  
Shahid Ali ◽  
Gulam Shabir ◽  
S.O. Butenko

The experimental studies were carried out on the fields of the Sumy NAU Training Research and Production Complex (TRPC) during 2016–2018.The soil of the experimental plot is typical deep-medium humus, large-dusty and medium-loam black soil on forest trees. The subject of the research was a white mustard variety of Oslava created at the Institute of Feed and Agriculture of the Podillya NAASU, entered in the Register of varieties suitable for cultivation in Ukraine in 2010. The aim of the research is to optimize the nutrition of the white mustard variety of Oslava through the complex application of mineral fertilizers and foliar fertilization under the conditions of the northeastern forest-steppe of Ukraine. The analysis of weather conditions, in particular the hydrothermal coefficient of Selyaninov (HTC), established that 2016 season was wet (HTC = 1.60), 2017 and 2018 were dry (HTC = 0.59 and 0.46). During the research, the cultivation technology was generally accepted in the experimental area, except for the elements studied. The results of the three-year study on the influence of foliar fertilizing under different mineral nutrition backgrounds on the yield of the white mustard variety Oslava are presented. It was found that the application of mineral fertilizers and complex fertilizers for the foliar feeding had a positive effect on the morphometric parameters of the white mustard, in particular, increased the plant height and the number of branches of the first order. The use of mineral fertilizers at the rate of N30P30K30 provided an increase in the yield by 0.34 t/ha, N60P60K60 – by 0.55 t/ha, N90P90K90 – by 0.61 t/ha on an average compared to the control. Therefore, for the maximum yield (2.14–2.21 t/ha) with a mass of 1000 seeds (5.39–5.54 g) of the white mustard under the conditions of the Northeastern Forest-Steppe of Ukraine, foliar fertilizing of Vuxal boron (3.0 l/ha) + Vuxal bioaminoplant 3.0 l/ha) and Spectrum B + Mo (2.0 l/ha) + Spectrum Ascorist (3.0 l/ha) should be applied on the background of N60-90P60-90K60-90, what provided an increase in the yield compared to the control of 0.58-0.65 t/ha.


2021 ◽  
Vol 22 (5) ◽  
pp. 735-744
Author(s):  
A. A. Artemyev ◽  
A. M. Guryanov ◽  
M. P. Kapitanov ◽  
A. A. Pronin

The productivity of annual feed grass mixtures (vetch + oats, Sudan grass + white mustard, Sudan grass + oilseed radish), sown after the winter rye harvesting during the “shooting” phase (the 1st time of sowing), during the “heading” phase (the 2nd time of sowing), and during the phase of complete ripeness (the 3d time of sowing), was studied in the conditions of forest-steppe soils of the Volga Region (the Republic of Mordovia). The experiment was carried out in 2018-2020 on heavy loamy soils against the background of three doses of mineral fertilizers use (without fertilizers, N16P16K16 + N30, N16P16K16 + N60). It has been established that the duration of vegetation of feed mixtures according to the time of sowing when harvesting for green mass was: at the first the time of sowing - 63-85 days, at the second - 63-76 days, at the third - 56-62 days. The highest height of the plant was at the first time of sowing with the use of fertilizers at a dose of N16P16K16 + N60, the lowest - at the third time of sowing. The highest growth was achieved by Sudan grass (48-116 cm), the lowest - by the mixture of vetch and oats (18-67 cm). The highest yield of green mass (14.0 t/ha) was observed when cultivating Sudan grass mixed with oilseed radish on the background of N16P16K16 + N60 at the first time of sowing. For mixture of Sudan grass with white mustard, the yield was 2-7 % lower, and for vetch + oats mixture - 32-45 % lower. The same was observed according to the yield of dry matter and feed units. As to the protein content, mixtures of Sudan grass with cruciferous crops exceeded the vetch + oats mixture by 7-26 %. The fiber content in the grass mixtures was decreasing from the first time of sowing to the last. The greatest amount of fiber (28.11-28.72 %) was observed during the second time of sowing. The economic assessment showed that the cultivation of annual grass mixtures after winter rye without mineral fertilizers was the most cost-effective (29-208 %). The highest efficiency (202-208 %) was provided by the mixture of Sudan grass with oilseed radish and white mustard.


Author(s):  
Y.M. Ohurtsov ◽  
О.О. Loshak

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.


Author(s):  
O.V. Nikitenko ◽  
S.V. Litoshko

As a result of the conducted in 2016–2018 studies on the study of the features of photosynthetic activity of the Ratnik hybrid sunflower found that the indicators of the leaf area of one plant and one hectare changed under the influence of the use of mineral fertilizers and growth regulators and were large according to the classical system of basic tillage. The largest indices of the leaf surface area of one plant in all systems of basic tillage were noted with the introduction of full fertilizer N60P60K60. The use of growth regulators in all combinations resulted in an increase in leaf area per plant and per hectare. Large indices of net productivity of photosynthesis were noted in crops according to the classical system of basic tillage, which were, depending on the scheme of drug use: on the control (without fertilizers) – 5,95–6,16 g/m2 × day, in variants with the introduction of N40 – 6,31–6,56 g/m2 × day, in variants with the introduction of N40P60 – 6,25–6,47 g/m2 × day in the variants with the introduction of N60P60K60 – 6,29–6,42 g/m2 × day. The application of mineral fertilizers in various doses contributed to an increase in the net productivity of photosynthesis: according to the classical system by 0,31–0,44, according to the moldboard-free system by 0,02–0,24, at the minimum 0,01–0,08 g/m2 × day. The most favorable conditions for the formation of productivity by sunflower plants have developed according to the classical system of basic tillage with a yield depending on the dose of fertilizers and the option of using growth regulators 2,62–3,46 t/ha. The highest yields of the Ratnik hybrid sunflower – 3.46 and 3.45 t/ha, were obtained when growing according to the classical system of basic tillage, applying mineral fertilizers in a dose of N60P60K60 for pre-sowing cultivation of the second and fifth options for using growth regulators: 2. Rost-concentrate + Chelatin oilseeds (6–8 pairs of real leaves) 5.1 processing: Chelatin phosphorus-potassium + Chelatin мultimix + Chelatin mono boron (3–4 pairs of real leaves), 2 processing: Chelatin mono boron (6–8 pairs of real leaves). The formation of the crop was largely influenced by the system of basic tillage (r = -0.66) and the use of mineral fertilizers (r = 0.61) and the weak use of drugs (r = 0.17). It should be noted the close relationship between yield and leaf surface area (r = 0.78), CPF (r = 0.78), dry matter weight per plant (r = 0.99) and seed weight (r = 0.97 ). Key words: sunflower, system of basic tillage, mineral fertilizer, growth regulator, leaf area, net productivity of photosynthesis, yield.


2016 ◽  
Vol 1 (3) ◽  
pp. 3-10
Author(s):  
Вершинина ◽  
Oksana Vershinina ◽  
Васин ◽  
Vasiliy Vasin

The purpose of research is the development of peas productivity increasing ways in the conditions of Middle Volga forest steppe. Results of researches during 2013-2015 with an assessment of photosynthetic activity indexes, structure of harvest, productivity and fodder advantages of peas by different methods of crops preseeding processing and are given by biogrowth factors Noktin and Fertigrain. The largest square of leaves 45.0-47.4 thousand sq.m/ha is formed in a phase of blossoming peas on options at an inoculation of seeds by Rizotorfin and Rizotorfin + Fertigrain Start with after-treatment of crops with biostimulator Fertigrain Foliar in a phase of 4-6 leaves. Photosynthetic potential of crops for vegetation was made without processing of seeds and crops on vegetation of 1.275 million sq.m/ha in a days, when processing seeds preparations Fertigrain Start it raises to 1.305 million sq.m/ha in a days. Net productivity of a photosynthesis reaches maximum in options with processing of seeds Noktin + Fertigrain Start and Rizotorfin + Fertigrain Start and processing of crops on vegetation with an index 4.00-4.09 g/m2 days. The conducted researches showed that all options of processings of seeds and crops increase the efficiency of peas. The greatest productivity of peas 2.04 t/ha and 2.12 t/ha is reached on the crops processed with preparation Fertigrain Foliar in budding phase against processing of seeds preparations Rizotorfin + Fertigrain Start and Noktin + Fertigrain Start. These options differ also in the best fodder advantages with collecting nonvolatile solid 1.82-1.90 t/ha, the feed protein units 2.32-2.41 thousand/ha and an exit of an exchange energy 23.35 - 24.27 GDzh/ha. Results of the conducted researches Noktin and Fertigrain allow todraw the conclusion for application effectiveness of preseeding inoculation of seeds and processing of crops vegetation by preparations.


2021 ◽  
Vol 14 (4) ◽  
pp. 1754-1759
Author(s):  
Elena Anatolyevna Yegushova

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.


2020 ◽  
pp. 34-37
Author(s):  
Tatyana Yakovlevna Prakhova ◽  
Anna Nikolaevna Kshnikatkina ◽  
Galina Viktorovna Ilyina ◽  
Batyr Zainullinovich Shagiev

The results of studying the parameters of photosynthetic activity of oilseeds (false flax, Abyssinian crumbe and white mustard) are presented. So, in the phase of the rosette, the assimilation surface was 11.2-21.8 thousand m2 per hectare. The smallest leaf area of  11.2 thousand m2 per hectare  was formed in the Abyssinian crambe agrocenosis. During the budding phase, the leaf area of  the crambe doubled and amounted to 22.3 thousand m2 per hectare. The leaf surface of all studied oilseeds reaches its maximum value in the flowering phase - 42.4-52.1 thousand m2 per hectare. In white mustard, the minimum leaf area was in the rosette phase - 21.8 thousand m2 per hectare, the maximum - in the flowering phase - 44.2 thousand m2 per hectare. Then the total assimilation surface decreased by 29.5% and amounted to 31.2 thousand m2 per hectare. The value of photosynthetic potential   ranged from 1594 to 1964 thousand m2 × day per hectare. The maximum value of photosynthetic potential was in Abyssinian crambe - 1964 thousand m2 × day per hectare, the minimum one - in false flax - 1594 thousand m2 × day per hectare. The high productivity of photosynthesis was in Abyssinian crambe (2.52 g / m2 × day). White mustard and false flax are characterized by slightly lower parameters of the net productivity of photosynthesis - 2.07 and 1.98 g / m2 × day, respectively. A longer period of the assimilation surface of false flax, white mustard and Abyssinian crambe plants provides high net photosynthesis productivity - 1.98-2.52 g / m2 × day and, as a result, high potential productivity up to 2.11-3.05 t / ha.


2021 ◽  
Vol 38 ◽  
pp. 00120
Author(s):  
Tatyana Slepneva ◽  
Sergey Makarenko ◽  
Alexander Taranau

The results of assessment are presented the stability of 13 sorts of plum-tree P. salicina subsp. ussuriensis Koval. et Kost. to the climatic conditions in the winter period from 2015/16 to 2020/21 in the northern forest-steppe of the Southern Urals. Like the control sort Ural’skaya zolotistaya by high adaptability to the conditions of the winter period are characterized sorts Altajskaya yubilejnaya, Zavet, Pionerka, Sapfir, Seyanec Krasnogo shara, Sodruzhestvo, Sinil’ga, Ural’skie zori, Chernosliv pozdnij. Stable fruiting over the years, regardless of weather conditions, during the flowering period with a yield of 62.0 to 91.6 hundredweight/ha are mark out with an increasing total sort Altajskaya yubilejnaya, Pionerka, Chernosliv pozdnij. The control sort Ural’skaya zolotistaya exceeds the yield of the sort Altajskaya yubilejnaya (91.6 hundredweight/ha), at the level of control the yield of the sorts Sodruzhestvo (71.5 hundredweight/ha), Sapfir (70.0 hundredweight/ha).


2021 ◽  
pp. 12-18
Author(s):  
T. Moskalets ◽  
V. Moskalets ◽  
I. Grynyk ◽  
I.V. Shevchuk

Goal. To investigate the bioecological and morphological features of the sea buckthorn fly, to evaluate the manifestations of parasitism and methods of phytophage control in agrocenoses of the sea buckthorn. Methods. Census of sea buckthorn flies was carried out in agrocenoses of sea buckthorn of the The Institute of Horticulture of the National Academy of Agrarian Sciences of Ukraine, its research network. The studies used sea buckthorn varieties of domestic and foreign selection, which differ in ripeness groups: mid-early, mid-ripening, late-ripening. Results. In the conditions of the Polesia-Forest-Steppe and Forest-Steppe ecotopes, a pest of agrocenoses of the sea buckthorn buckthorn fly was revealed. Bioecological features and morphological characteristics of this pest have been investigated. It has been established that in the conditions of the Western and Northern Forest-steppe of Ukraine, mid-early and mid-season varieties of sea buckthorn suffer from the sea buckthorn fly. A set of measures has been developed for the use of elements of agricultural technology, biological and chemical preparations for the control of sea buckthorn flies in sea buckthorn agrocenoses. Conclusions. It has been shown that the populations of the sea buckthorn fly are numerous on plants of early and mid-season varieties of sea buckthorn, in particular, on such as: Chuiskaya, Pagorbova, Morkvyana, Pavilionna. It was found that the larvae of flies penetrate the fruits, where they feed on the pulp, after which the sea buckthorn fruits become completely unsuitable for fresh consumption and for processing. Research carried out during 2017—2020 in the conditions of the Polesia-Forest-Steppe and Forest-Steppe ecotopes, it was possible to identify varieties of sea buckthorn (Orangevya, Adaptyvna), which are relatively resistant to sea buckthorn fly. It has been established that carrying out agrotechnical measures for loosening the soil in the near-stem part of plants and aisles, sowing perennial herbaceous vegetation in the aisles against the background of changing weather conditions significantly inhibits the development of the sea buckthorn fly and reduces damage to sea buckthorn fruits.


2019 ◽  
Vol 14 (3) ◽  
pp. 5-9
Author(s):  
Виктор Агафонов ◽  
Viktor Agafonov ◽  
Евгений Бояркин ◽  
Evgeniy Boyarkin

The article presents findings of the influence of different levels of mineral nutrition on plant growth and development, the impact of fertilizers on the botanical composition, on the productivity and forage benefits of cereal-bean agrocenoses in the forest-steppe zone of the Baikal region. The objects of research were mixed crops of oats with peas and millet with vetch, peas, and Austrian winter pea. Legumes are the main source of protein increase in feed. In the field, the most widespread, among legumes, were vetch, sowing peas, field peas (Austrian winter pea). As a result of phenological observations, it was found that the growth and development of plants depended on the biological characteristics of crops, weather conditions and directly on the mineral nutrition level. The millet reacted most effectively to the application of mineral fertilizers, starting from the exit phase into the tube. The introduction of mineral fertilizers in pre-sowing tillage contributed to an increase in the proportion of legume components in the total green mass yield and a decrease in cereals. The highest competition in agrocenoses of millet with legume components was vetch, its share in the mixture increased, compared to the unfertilized background, by 6 and 14.5%, depending on the background of fertilizers. It was found that, compared with the unfertilized background, mineral fertilizers increased the yield of green mass from 1.5 to 4.9 tons per hectare, the collection of dry matter from 0.4 to 2.0 tons per hectare and the collection of feed units from 0.3 to 1.3 tons per hectare. Digestible protein content in 1 unit increased with the introduction of nitrogen fertilizer (N45), depending on the type of components in the mixture, from 3.2 to 6.6 g, and with the introduction of complex mineral fertilizer (N45P30K30) from 2.5 to 9.6 g. All are millet-bean mixtures at all levels of mineral nutrition comply with zootechnical standards.


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