Analysis of winter crops development in the southern regions of the European part of Russia in February 2019 based on remote monitoring

Loupian, Е.А.; Bulanov, K.A.; Denisov, P.V.; Krasheninnikova, Yu.S.; Плотников, Д.Е.; Tolpin, V.A.; Troshko, K.A.; Uvarov, I.A.

doi:10.21046/2070-7401-2019-16-1-266-271

Cited by 3 publications

(1 citation statement)

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“…Modern online services, designed to predict the yield, MARS, CropYield Forecasting System (MCYFS, Italy) [6], "Harvest Map" and others [7] calculate the value of really possible yield under given soil and meteorological conditions in real time and for local areas they are not informative enough. Therefore, information, base of the study, was made up of materials from statistical reporting of the Simferopol district administration, digital elevation model (hereinafter -DEM) Advanced Land Observing Satellite-1 World 3D Topographic Data (hereinafter -ALOS AW3D) Version 2.1, vector layers of boundaries of administrative-territorial structure and agricultural land, reference data on the formation of crop yields, taking into account the arrival of PAR.…”

Section: Methodsmentioning

confidence: 99%

Geoinformation modeling of potential productivity in agricultural landscapes for the formation of sustainable land use

2020

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The work is devoted to geoinformation modeling of potential and really possible yield of leading agricultural crops in the agricultural landscapes of the Simferopol region of the Republic of Crimea. The study area is characterized by high agricultural development, complicated physical and geographical location and insufficient moisture. Algorithm for geoinformation modeling of potential and really possible crop yields by the amount of arrival of photosynthetically active radiation for each point of input surface is considered. The resulting cartogram of averaged values deviation of potential and really possible yields from actual for leading agricultural crops can be used in the development of scientifically based recommendations for transformation of agricultural lands in complicated physical and geographical conditions.

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Section: Methodsmentioning

confidence: 99%

Geoinformation modeling of potential productivity in agricultural landscapes for the formation of sustainable land use

2020

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The use of NDVI to determine the nitrogen content in winter wheat plants in the Stavropol Territory

Сторчак

Чернова

Ерошенко

et al. 2019

Agrarian Bulletin of The

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Abstract. Lack of nitrogen leads to a decrease in yield and grain quality in winter wheat plants. Therefore, it is necessary to monitor nitrogen nutrition throughout the period of growth and development of plants, which will quickly assess the need for fertilizing to obtain high yields of quality grain. Therefore, the aim of the study was to establish the possibility of using the normalized difference vegetation index (NDVI) to control the nitrogen content in winter wheat plants in the Stavropol territory. Methods. The work was performed in federal state budgetary scientific institution “North-Caucasian Federal Agricultural Research Centre” at the production of winter crops. Selection of plant samples (sheaf material) was carried out according to the generally accepted method. Repeated – 4x. Determination of the chemical composition of plant organs was carried out by the method of V. T. Kurkaev with co-authors, and the content of chlorophyll – Milaeva and Primak. Results. Since the quality of winter wheat grain directly depends on the nitrogen supply of plants, the relationships between the nitrogen content in winter wheat plants and the values of the vegetation index NDVI were studied. High correlation coefficients between these indicators are obtained. Thus, the average of Rcorr fields.in 2012 it was equal to –0.89, and in 2013 and 2014 –0.82. In addition, due to the dependence of nitrogen content on the amount of chlorophyll, it was possible to analyze the correlation between these indicators and NDVI fields, which showed that a stable relationship (inverse) is observed in the case of the amount of chlorophyll per unit biomass (mg/g), which is estimated on average at –0.79. The interrelation between grain quality and earth remote sensing data is revealed. It is most clearly seen in the case of the maximum and average NDVI for the period from the resumption of spring vegetation to full ripeness of winter wheat. Scientific novelty. For the first time in the conditions of unstable humidification of the Stavropol territory, a high inverse correlation between the vegetation index NDVI and the nitrogen content in winter wheat plants was determined, which on average is estimated by the correlation coefficient equal to –0.84.

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Influence of various elements of cultivation technology on the chlorophyll content in winter wheat plants and its yield

Шестакова¹,

Ерошенко²,

Сторчак

et al. 2020

Agrarian Bulletin of The

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Abstract. The chlorophyll content is the most important factor that determines the intensity of photosynthesis and the overall biological productivity of plants. Therefore, the search for mechanisms that allow you to manage the production process is an important task, the solution of which will allow you to improve the technological methods of growing crops to obtain high yields. The purpose of the study is to determine the influence of various elements of cultivation technology on the chlorophyll content in plants and the yield of winter wheat. Methods. The objects of research were winter wheat crops of various varieties. The chlorophyll content was determined by the method of Ya. I. Milaeva and N. P. Primak. Crop accounting was performed using the combine method. Results. The relative chlorophyll content in winter wheat plants: lea predecessor on average 9,4 % higher than for cereals; the use of mineral fertilizers in a few increased this figure by 38,0 %, wheat ‒ 14,0 %; in the later sowing time the amount of green pigments in plants on average more than early and optimum of 10,5 and 4,0 %, respectively; in more thickened crops, the chlorophyll content in plants is lower than in sparse ones (by 13,0 %). The absolute chlorophyll content (g/m2) in winter wheat plants: in a few in an average of 45,0 % higher than for cereals; the use of mineral fertilizers in a few increased this figure at 73,4 %, for winter wheat ‒ 76,8 %; number of green pigments in plants at the optimum sowing time is on average higher than in the early (29,6 %) and late (15,2 %); at the optimal seeding rate accumulates more chlorophyll than the minimum (by 33,4 %) and the maximum (24,2 %). On average, for all cultivation technologies, the variety Stat' contains the largest amount of chlorophyll in plants, and Zustrich – the smallest. The yield of winter wheat for the lea precursor was 4,9 t/ha, for winter wheat – 3,3 t/ha. Use of mineral fertilizers on couple increased this indicator on average by 44,1 %, and on the cereal predecessor ‒ by 55,3 %. At the optimal time of sowing, the highest yield was formed, and on average it was 5,1 t/ha for varieties. seeding Rates did not have provable differences on the yield of winter wheat. The highest yield was obtained in the Rate variety on the predecessor of pairs on a fertilized background – 7,5 t/ha. Scientific novelty. The features of the influence of various precursors, the level of mineral nutrition, timing and seeding rates on the content of chlorophyll in plants and the yield of winter wheat crops of new varieties of selection of the North Caucasian FSAC were revealed. The correlation between the relative and absolute content of chlorophyll in winter wheat plants and its yield for these varieties in the zone of unstable moisture in the Stavropol territory was determined.

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Analysis of winter crops development in the southern regions of the European part of Russia in February 2019 based on remote monitoring

Cited by 3 publications

References 1 publication

Geoinformation modeling of potential productivity in agricultural landscapes for the formation of sustainable land use

Geoinformation modeling of potential productivity in agricultural landscapes for the formation of sustainable land use

The use of NDVI to determine the nitrogen content in winter wheat plants in the Stavropol Territory

Influence of various elements of cultivation technology on the chlorophyll content in winter wheat plants and its yield

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