The Influence of Abiotic and Anthropogenic Factors on the Formation of Potato Yield

Шпанев, А. М.; Smuk, V. V.

doi:10.1051/e3sconf/202124701041

Cited by 2 publications

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References 3 publications

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“…Пространственная неоднородность фитосанитарного состояния -важная особенность агроценозов и объективная реальность, с которой следует считаться при проведении мониторинговых и защитных мероприятий в рамках разработки прецизионных подходов в защите растений [8,9]. Так, нашими более ранними исследованиями было показано, что малолетние виды сорных растений склонны к более равномерному размещению на полях, а многолетниек куртинному произрастанию, что объясняется особенностями их размножения [10]. Неравномерность пространственного размещения личинок жуков-щелкунов являлась следствием разного содержания элементов питания, обусловленного длительным применением минеральных удобрений в зернотравяно-пропашном севообороте [11].…”

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The spread of rhizoctoniosis in potato plantings in the conditions of the North-West of the Russian Federation with a heterogeneous content of nutrients in the soil

Smuk

Шпанев

2023

Аграрная наука Евро-Северо-Востока

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Rhizoctoniosis is one of the most common and harmful diseases of potatoes in the North-West of Russia. The degree of its manifestation depends on many factors, including the content of basic nutrients in the soil. In the Leningrad region the effect of prolonged application of organic and mineral fertilizers on the degree and nature of the manifestation of rhizoctoniosis was studied in potato variety Meteor in forage and field crop rotations. By the results of the detailed accounting carried out in 2022 including observation of all potato plantings (43406 in total) it was determined that rhizoctoniosis damage had random distribution character in field crop rotation and focal distribution in forage crop rotation. This conclusion was confirmed by respective coefficients of variation (79 and 87 %) and aggregation (1.0 and 1.5). Spatial heterogeneity of plants damaged by rhizoctoniosis was visualized on digital maps compiled with GIS AFI and Surfer 11 while grouping the data into elementary sections. There was sufficient influence of cultivation and fertilization of different levels on rhizoctoniosis spread. The influence of cultivation was weak and statistically significant only in forage crop rotation, where there was an increase of rhizoctoniosis damage of potato plants (by 1.7-2.5 times compared to low cultivated soil). Under mineral fertilizers application there was a decrease of rhizoctoniosis damage of potato plants both in field crop rotation (by 1.1-1.7 times compared to variant without fertilizers application), and in forage crop rotation (by 1.1-1.3 times). Complex influence of soil cultivation and fertilization of potato plantings caused a decrease of rhizoctoniosis damage of potato tubers by 1.9 and 2.0 times in field and forage crop rotations, respectively.

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The spread of rhizoctoniosis in potato plantings in the conditions of the North-West of the Russian Federation with a heterogeneous content of nutrients in the soil

Smuk

Шпанев

2023

Аграрная наука Евро-Северо-Востока

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The influence of abiotic and anthropogenic factors on the formation of spring rapeseed yield in the North-West of the Russian Federation

Шпанев

Smuk

2022

Аграрная наука Евро-Северо-Востока

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Data on the influence of abiotic and anthropogenic factors on the formation of crop yields are important for developing the system for production process managing. The studies were carried out in 2012-2019 on the basis of agroecological stationary experiment aimed at investigating the effectiveness of long-term use of mineral fertilizers (N0P0K0, N65P50K50, N100P75K75) and an integrated plant protection system. Weather conditions turned out to be the most significant among all factors affecting the yield of spring rapeseed Oredezh 4 in the North-West region of the Russian Federation. Rapeseed plants show increased sensitivity to moisture and heat supply conditions in the first half of the growing season. At the same time, during the most of the growing season of the crop and especially at the initial stages of ontogenesis the rainfall has a positive effect (r = 0.43…0.67, р ≤ 0.05), and temperature has a negative effect on rapeseed yield (r = -0.44…-0.50, р≤0.05). The integrated plant protection system was more important in the formation of the spring rapeseed crop (19.8 %) than the application of mineral fertilizers (2.2 %). According to the results of all the necessary protective measures, the averaged value of the preserved spring rapeseed yield over the years of the research was 1.04 t/ha (90 %), in the years of mass reproduction of the cabbage moth it reached 0.96 t/ha (213 %), in the years of strong development of Alternaria – 1.46 t/ha (248 %). In the absence of protective measures, the application of fertilizers, as well as the cultivation of spring rapeseed in general, becomes impractical. The combined use of mineral fertilizers and plant protection products in spring rapeseed sowings ensured the formation of a seed yield of 1.97-2.13 t/ha, which exceeded the control (N0Р0К0, without means of protection) by 1.06-1.22 t/ha (117-134 %).

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The Influence of Abiotic and Anthropogenic Factors on the Formation of Potato Yield

Cited by 2 publications

References 3 publications

The spread of rhizoctoniosis in potato plantings in the conditions of the North-West of the Russian Federation with a heterogeneous content of nutrients in the soil

The spread of rhizoctoniosis in potato plantings in the conditions of the North-West of the Russian Federation with a heterogeneous content of nutrients in the soil

The influence of abiotic and anthropogenic factors on the formation of spring rapeseed yield in the North-West of the Russian Federation

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