Influence of saline soils and mineral fertilizers on the germination and formation of sunflower seeds

Беловолова, А А; Gromova, Natalya; Есаулко, А Н; Golosnoy, Evgeny; Grechishkina, Ylia Ivanovna

doi:10.1051/e3sconf/202016406016

Cited by 2 publications

(2 citation statements)

References 13 publications

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“…Около 50 % территории подвержены водной эрозии, которая приводит к смыву и размыву почвы, что в дальнейшем ведёт к непригодности земель и выводу из категории сельскохозяйственного назначения. Единственным путём повышения продуктивности земель является орошение и обводнение земель с применением современных способов орошения [10].…”

Section: таблица 4 -орошаемые земли апанасенковского муниципального округаunclassified

Assessment of the dynamics of the main agrochemical indicators of irrigated chestnut soils under risk farming conditions in Stavropol

Sychev¹,

Grechishkina²,

Egorov³

et al. 2021

TVAN

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Irrigation is an important element of agricultural production in the arid conditions of the Stavropol Territory. The combination of irrigation, chemicalization and complex mechanization provides highly productive use of land that requires specific scientific support. The purpose of the research is to identify differences in the dynamics of the main agrochemical indicators (organic matter, pH, mobile phosphorus, mobile potassium) on irrigated and non-irrigated chestnut soils. The object of research is chestnut soils located in an extremely arid climatic zone of the Stavropol Territory. The data of complex monitoring of soil fertility in the Apanasenkovsky district were used as the source material. The data for the period from 1991 to 2020 were prepared by the staff of the State Center for Agrochemical Service “Stavropolsky”. The content of soil organic matter was determined by the Tyurin method in the modification of CINAO. Mobile compounds of phosphorus and potassium were determined by the Machigin method in the modification of CINAO. The value of the hydrogen pH index of the aqueous suspension was determined by the potentiometric method. The content of organic matter in chestnut soils increased from 1.8 to 2.0–2.1% both on irrigated and non-irrigated lands. A tendency to leaching of irrigated lands by 0.2 units has been revealed; therefore, in this case, it is recommended to use chemical ameliorants. Moreover, on irrigation, an increase in the content of mobile phosphorus (from 0.8 to 4.0 mg/kg) compared to non-irrigated areas was revealed. The reason for this is the increased doses of phosphorus-containing fertilizers applied during irrigation. During the study period, the content of mobile potassium increased from 77 to 93 mg/kg irrigated chestnut soils compared to non-irrigated ones. The negative dynamics in the content of mobile potassium on irrigation was revealed. It amounted to 364 mg/kg (as of 2020), which is lower than the data of the previous survey period by 81 mk/kg. Particular attention should be paid to the use of potash fertilizers since there is increased removal of this element, despite the high potash potential of chestnut soils in the arid zone of the Stavropol Territory.

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Section: таблица 4 -орошаемые земли апанасенковского муниципального округаunclassified

Assessment of the dynamics of the main agrochemical indicators of irrigated chestnut soils under risk farming conditions in Stavropol

Sychev¹,

Grechishkina²,

Egorov³

et al. 2021

TVAN

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“…For example, for the variety SPK, the maximum yield was obtained at N30P40-60, but for the early maturity variety Zhaina, this was obtained at N30P20-40 [10]. An assessment of the response to fertilizer rates should be conducted in accordance with the soil and climatic conditions of the production region and the characteristics of sunflower varieties and hybrids [11]. Field trials were conducted to quantify the comparative performances of various sunflower hybrids (Hysun33, Hysun38, and Pioneer-64A93), as influenced by various levels of nitrogen (N) fertilizer (0, 60, 120, 180, and 240 kg N/ha) under different agro-environments, including arid and semi-arid conditions that are similar to dry steppe and steppe zones.…”

Section: Introductionmentioning

confidence: 99%

Sunflower (Heliánthus ánnuus) Yield and Yield Components for Various Agricultural Practices (Sowing Date, Seeding Rate, Fertilization) for Steppe and Dry Steppe Growing Conditions

Gordeyeva,

Shelia,

Shestakova

et al. 2023

Agronomy

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The dynamics of the productivity of the sunflower hybrid “Baiterek 17” were studied for rainfed conditions of the steppe and dry steppe zones of Kazakhstan for two fertilizer levels (without fertilizers and with the application of a nitrogen-phosphorous fertilizer), two sowing dates, and three seeding rates. The growing season duration varied among zones and was affected by sowing dates. An increase in duration (3–5 days) was observed for the early sowing date and fertilized treatments, regardless of the zone. Increasing the seeding rate for all treatments by sowing date and fertilizer application reduced the duration of the growing season by 3–6 days. The fertilizer application did not affect the formation of seedlings in the study areas. In the dry steppe zone, from 2.5 to 4.8 plants/m2 were formed before harvesting, with an increase in the number of plants at the high seeding rate (57,000 seeds/ha). In the steppe zone, the same pattern was preserved: from 3.5 to 4.9 plants/m2 at a seeding rate of 65 thousand seeds/ha. The maximum diameter and weight of the flower head were found for the early sowing date and fertilized treatments at a low seeding rate, with a strong effect on the yield for both the steppe and dry steppe zones in 2022. On average, for both years, the highest yield for the dry steppe zone was obtained for the sowing date of 15 May and at a seeding rate of 57,000 seeds/ha, while for the steppe zone, the highest yield was obtained for the 10 May planting date and at a sowing rate of 65,000 seeds/ha. Improving plant nutrition and increasing the plant density up to a seeding rate of 65,000 seeds/ha for the early sowing dates (10 May) increased the plasticity in the steppe zone. For the dry steppe zone, the plasticity of the hybrid decreased, but the highest plasticity was also obtained for an earlier sowing date (15 May) and at a seeding rate of 57,000 seeds/ha crop. The study shows that the hybrid “Baiterek 17” has a high ecological plasticity under changing environmental conditions and, with an increase in moisture availability, it requires intensive agricultural practices (fertilization, increased seeding rate, and early sowing dates) to obtain a high yield.

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Influence of saline soils and mineral fertilizers on the germination and formation of sunflower seeds

Cited by 2 publications

References 13 publications

Assessment of the dynamics of the main agrochemical indicators of irrigated chestnut soils under risk farming conditions in Stavropol

Assessment of the dynamics of the main agrochemical indicators of irrigated chestnut soils under risk farming conditions in Stavropol

Sunflower (Heliánthus ánnuus) Yield and Yield Components for Various Agricultural Practices (Sowing Date, Seeding Rate, Fertilization) for Steppe and Dry Steppe Growing Conditions

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