Effect of drainage and application of mineral fertilizers on the yield of spring wheat

Petrova, L. I.; Mitrofanov, Yu. I.; Первушина, Н. К.

doi:10.30766/2072-9081.2018.64.3.70-74

Cited by 3 publications

(2 citation statements)

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“…Важнейшими показателями плодородия почв, определяющими величину и качество урожая яровой пшеницы, служат содержание в пахотном слое доступных форм основных макроэлементов и влагообеспеченность [10,11,12]. Так, в условиях вегетационного опыта коэффициент корреляции между величиной урожая яровой пшеницы и содержанием подвижного фосфора в дерновоподзолистой почве составлял 0,42.…”

Section: Introductionunclassified

The Nature and Strength of the Correlation of Spring Wheat Yield With Soil Factors in Conditions of Gray Forest Soil

Serzhanova

Gilyazov

Shaykhutdinov

et al. 2023

Vestnik of Kazan State Agrarian University

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The study was carried out in order to assess the dependence of the yield of spring soft wheat on the main agrochemical indicators and spring reserves of productive moisture in a meter layer of gray forest soil. The work was carried out in 1982-2018. in the Kama zone of the Republic of Tatarstan. Spring wheat was cultivated in the crop rotation link: pure fallow - winter rye - spring wheat. Under the predecessor, the average recommended norms of mineral fertilizers (N40 ... 60P40 ... 50K40 ... 60) were annually introduced; fertilizers were not applied directly under the wheat. The soil of the experimental plot is gray forest medium loamy with the following agrochemical parameters: organic matter content - 2.8 ... 3.2%, easily hydrolyzable nitrogen - 100 ... 149 mg / kg, mobile phosphorus and potassium (according to Kirsanov). ) - 105...184 and 79...149 mg/kg, respectively, pHrast. – 5.6...5.7. The yield of spring wheat cultivated without fertilization varied greatly over the years and ranged from 0.99 to 2.97 t/ha. It amounted to 62% due to the influence of the provision of gray forest soil with the main nutrient macronutrients (NMC) in a form available to plants. The content of readily hydrolysable nitrogen 150 mg/kg, mobile forms of phosphorus and potassium 150 and 140 mg/kg, respectively, turned out to be the optimal level for the formation of the largest grain yield of spring wheat in the experiment on gray forest soil. without the use of fertilizers.

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Section: Introductionunclassified

The Nature and Strength of the Correlation of Spring Wheat Yield With Soil Factors in Conditions of Gray Forest Soil

Serzhanova

Gilyazov

Shaykhutdinov

et al. 2023

Vestnik of Kazan State Agrarian University

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“…Современные осушительные системы направлены на повышение продуктивности мелиорированных земель [3,4]. Исследования, проведенные в Тверской области, показали, что продуктивность осушаемых земель на 17-19 % выше по сравнению с неосушаемыми как на фоне применения удобрений, так и без удобрений [5,6,7].…”

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Formation of groundwater levels of drained lands in the natural and climatic conditions of the Novgorod region

Balun

Shkodina

Yakovleva

et al. 2023

Аграрная наука Евро-Северо-Востока

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Studies on the formation of groundwater levels have been carried out on open and closed drainage systems in the natural and climatic conditions of the Novgorod region for more than 30 years at 2 pilot production sites. On the first site there are 4 structures of closed drainage: shallow with a depth of 70 cm; medium-deep drainage (drainage depth 110 cm) with various options for filling the drainage trench-wood chips and sand-gravel mixture; two-tier drainage (drainage depth 110 and 60 cm). On the second site there are four open drainage structures: channels; hollows – without hydro-reclamation structures; with drainage along the bottom-tubular and strip-free. The average long-term data on groundwater regimes on experimental structures were obtained and conclusions were drawn that the average seasonal groundwater level formed by closed drainage systems is 18 cm lower compared to open drainage systems; the most favorable groundwater regime is formed by drainage systems of two-tier drainage. The dependences of groundwater levels formed during the most intense periods of operation of drainage systems (May – 1st decade of June) on the amount of precipitation for previous periods are analyzed. It was revealed that the closeness of the relationship between groundwater levels and the amount of precipitation in the open drainage variants is less close (r2 = 0.01-0.30) compared with the closed drainage variants (r2 = 0.02-0.54). The closest relationship on closed drainage systems is observed between the groundwater level of the third decade of May and precipitation for May: during this period, with an increase in precipitation by 1 mm, groundwater rises by 0.3 cm – in the variant with chip filling and by 0.6 cm – in the variants of shallow and two-tier drainage.

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Dynamics of humus in field crop rotations on drained lands

Mitrofanov,

Pervushina

2024

Аграрная наука Евро-Северо-Востока

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The purpose of the research is to study the influence of different types of field crop rotation, fertilizers, drainage and hydrothermal conditions on the dynamics of humus in reclaimed soil. The studies were carried out on the experimental fields of the All-Russian Research Institute of Reclaimed Lands (reclamation sites “Kuzminskoye Boloto 2”, “Semenovskoye” and “Gubino” in the Tver region). Waterlogged soils were drained using closed drainage (inter-drain distance is 18–20 m, drain depth is 0.9–1.2 m). The soils of the experimental plots are soddy-podzolic, light loamy, gleyic, formed on a moraine or thin binomial. Observations of the dynamics of humus were carried out in the grain-grass-row, grain-grass, grain and grain-row types of crop rotation. The influence of crop rotation on the content of humus in the soil was determined, first of all, by the composition, the structure of the crops grown and agricultural technology of their cultivation. Due to plant residues, 56.6–76.5 % of the volume of mineralized humus were restored in grain-grass-row crop rotation, 51.8 % in grain, 26.4 % in grain-row crop rotation. The most significant qualitative changes in the composition of humus were observed in grain-grass-row crop rotation: with a positive humus balance, the ratio of humic and fulvic acids increased from 0.63 to 0.74. The use of organic and mineral fertilizers significantly changes the balance of humus in the arable layer of the soil. With an organic-mineral fertilizer system, the annual loss of humus (in kg/ha) on the drained plot was 6.8–11.4 times less, on the non-drained plot – 2.1–2.6 times less than in the variant without fertilizers. Drainage of waterlogged soils increases the role of fertilizers in the accumulation of humus, reduces its losses and improves the quality parameters of humus – the ratio of humic and fulvic acids in the composition of humus under the influence of drainage increased from 0.61 to 0.88. The impact on the dynamics of humus of hydrothermal conditions has been established. In years with a dry first half of the growing season, an increase in humus content is observed; in excessively wet years, on the contrary, a decrease is observed. The correlation coefficients of humus content with hydrothermal conditions in May-June were – 0.84 (in 1985–1993) and 0.95 (in 2014–2022).

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Effect of drainage and application of mineral fertilizers on the yield of spring wheat

Cited by 3 publications

References 0 publications

The Nature and Strength of the Correlation of Spring Wheat Yield With Soil Factors in Conditions of Gray Forest Soil

The Nature and Strength of the Correlation of Spring Wheat Yield With Soil Factors in Conditions of Gray Forest Soil

Formation of groundwater levels of drained lands in the natural and climatic conditions of the Novgorod region

Dynamics of humus in field crop rotations on drained lands

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