scholarly journals On the Use of UAVs with a Slantrange Sensor System for Estimation of Crop Safety

2020 ◽  
Vol 45 ◽  
pp. 21-33
Author(s):  
Natalia Pasichnyk ◽  
Serhii Lienkov ◽  
Sergey Shvorov ◽  
Larysa Komarova ◽  
Dmytro Komarchuk ◽  
...  

The article addresses applied aspects of using UAVs for monitoring winter wheat crops to assess the aftereffects of herbicides remaining on the culture of the predecessor. The issue has a local specificity related to inconsistencies of plant cultivation technologies and the inadequate study of the impact of modern plant protection products in domestic soil conditions. Restoring the crop yields is possible by timely identification of the causes of stress, but the time for decision-making is limited. This time can be reduced by state-of-the-art monitoring technologies applied at industrial scale. Laboratory studies using phyto cameras and spectral and spectral-spatial monitoring methods unambiguously testified to the stress caused by the aftereffect of herbicides, but did not allow to establish clear criteria. Therefore, we conducted field studies using UAV-mounted Slantrange complex and analyzing the DJI Matrice 200 to define the distribution of stress areas on the field. It was found that the reliability of monitoring data can increased computer data processing and computer training in the search for correlation links between the distribution of stress plants in the field and the implementation of technological operations, terrain topography, etc.

2021 ◽  
pp. 27-38
Author(s):  
S. Shvorov ◽  
◽  
N. Pasichnyk ◽  
O. Opryshko ◽  
I. Bolbot ◽  
...  

The article is devoted to the applied aspects of UAV use, namely the monitoring of winter wheat crops in relation to the stresses caused by technological stresses. First of all, this applies to the prolonged action of herbicides left over from the predecessor crop and which cause stress in new crops. The issue has local specifics related to the inconsistency of plant cultivation technologies and to the insufficient study of the impact of the latest plant protection products in domestic soil conditions. Restoration of crop yields is possible with timely identification of the causes of stress, but decision-making time is limited, which requires the introduction of the latest monitoring technologies suitable for industrial scale. In laboratory studies using phytochambers, the presence of both spectral indicators of healthy and affected plants and the difference in their dimensions were recorded. However, such differences can be explained by other stressors, so it was not possible to establish clear criteria for spectral or spectral-spatial monitoring methods that clearly indicated the stress caused by the after-effects of herbicides. In field studies using the Slantrange complex mounted on a DJI Matrice 600 UAV as an object of study, the distribution of stress areas in the field was analyzed. It was found that, in purely spectral and spectral-spatial monitoring of winter wheat, it was not possible to reliably identify the stressful nature caused by the aftereffects of herbicides, ie ground platforms for spectral sensor equipment are ineffective. It is proved that the maps of stress indices obtained on the basis of high-resolution data from UAVs can be considered as a separate object of research on the interpretation of the causes of stress of complex biotechnical objects such as crops. Improving the reliability and reliability of monitoring data can be achieved by implementing systems of machine data processing and computer training to find correlations between the distribution of stress in plants in the field and the implementation of technological operations, terrain. Key words: UAV, stress, prolonged action of herbicides, Slantrange


Plants ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 2747
Author(s):  
Thomas Armand ◽  
Luâna Korn ◽  
Elodie Pichon ◽  
Marlène Souquet ◽  
Mélissandre Barbet ◽  
...  

Neonicotinoids are widely used to protect fields against aphid-borne viral diseases. The recent ban of these chemical compounds in the European Union has strongly impacted rapeseed and sugar beet growing practices. The poor sustainability of other insecticide families and the low efficiency of prophylactic methods to control aphid populations and pathogen introduction strengthen the need to characterize the efficiency of new plant protection products targeting aphids. In this study, the impact of Movento® (Bayer S.A.S., Leverkusen, Germany), a tetrameric acid derivative of spirotetramat, on Myzus persicae and on viral transmission was analyzed under different growing temperatures. The results show (i) the high efficiency of Movento® to protect rapeseed and sugar beet plants against the establishment of aphid colonies, (ii) the impact of temperature on the persistence of the Movento® aphicid properties and (iii) a decrease of approximately 10% of the viral transmission on treated plants. These observations suggest a beneficial effect of Movento® on the sanitary quality of treated crops by directly reducing primary infections and indirectly altering, through aphid mortality, secondary infections on which the spread of disease within field depends. These data constitute important elements for the future development of management strategies to protect crops against aphid-transmitted viruses.


2010 ◽  
Vol 55 (1) ◽  
pp. 103-122 ◽  
Author(s):  
Branislava Sivcev ◽  
Ivan Sivcev ◽  
Zorica Rankovic-Vasic

Pests and grapevine diseases in organic production are suppressed by preventive measures with a view to reducing the impact of the attack. Allowed substances acting on patogenous fungi, insects, mites and other harmful organisms are used, if appropriate. Insecticides of plant origin are used in the organic production of grapevine, as well as vegetable oils, powders and insecticidal soaps that are selective, with a narrow range of effects and of lower toxicity, as well as biological products. As a rule, such plant protection products require a more frequent application. Copper-based and sulphur-based fungicides are still leading products in suppressing grapevine diseases. Researches are directed to decrease the quantity of application and to find their replacement by also efficient fungicides. A special emphasis is put on researching the efficient fungicides for suppressing Botrytis bunch rot and factors causing grapevine wood diseases (Esca and Eutypa) in organic production. Along with copper and sulphur, different substances such as bicarbonates, plant extracts and oils, biological products being parasites, patogenous or diseases agent antagonists, and natural products such as milk and whey are applied in the organic production of grapevine.


Author(s):  
Michał Jerzak

This article aims to indicate the potential impact of the European Green Deal strategy’s solutions on the production of native protein crops for animal feed and its role in achieving sovereignty in the supply of this raw material in Poland. Self-sufficiency in the supply of plant protein is a concern that has been recognized and widely discussed in the national and European scientific community among practitioners involved in the production of livestock feed and, above all, among politicians of the European Commission, which decides the final shape of the EU Common Agricultural Policy. The strategy adopted by the European Commission, referred to as the European Green Deal, proposes restrictions on the use of plant protection products and mineral fertilizers. This will not take place without having an impact on production and the economic situation in agriculture. The research was conducted based on Statistics Poland data and the results of scientific studies. It was concluded that the implementation of the proposed strategy could be a factor that activates the production of native leguminous plants due to their nitrogen-fixing properties. Consequently, this may contribute to an increase in the production of native plant protein for animal feed, and thus to a greater sovereignty in the supply of this raw material for feed purposes.


2021 ◽  
Vol 273 ◽  
pp. 01002
Author(s):  
Maria Belik ◽  
Svetlana Sviridova ◽  
Tatyana Yurina

The results of field studies of the use of biological products and microfertilizers in the cultivation of corn for grain and sunflower in the production conditions of the Krasnodar Region are presented. Indicators of a comparative assessment of economic and new schemes for the application of fertilizers and plant protection products from the point of view of agrotechnical and economic efficiency are given.


2019 ◽  
Vol 15 (3-4) ◽  
pp. 69-75
Author(s):  
S.T. Omelchuk ◽  
A.V. Blagaya ◽  
M.V. Kondratyuk ◽  
T.V. Hyrenko

Relevance. Taking into account the widespread application of plant protection products in soybean cultivation, there is a need for research aimed at hygienic evaluation of the potential danger of soybean crop contamination after pesticide and in particular insecticides application. Objective of the study is a hygienic evaluation of insecticides content dynamics in plants after application on soya crops. Materials and methods. Materials – active ingredients of the studied insecticidal preparations, soya plants (verdurous mass, beans and seeds). Full-scale in-field hygienic experiment, high-performance liquid chromatography, gas-liquid chromatography, statistical methods were used in the study. Results. The highest concentration of active substances was determined in green plants, if processing had been performed at an early stage of plant formation (acetamipride – 0.63 mg/kg, fenproximate – 0.41 mg/kg, thiamethoxam – 0.21 mg/kg). In the case of twice repeated applications, the largest amount of pesticides was determined in beans and seeds (alpha-cypermethrin – 0.51 mg/kg, chlorpyrifos, tebufenpyrad – 0.35 mg/kg). As the culture ripened and the formation of beans and seeds took place, the content of active substances gradually decreased and after 20-25 days residues were found at or below the limit of determination for the corresponding methods. Conclusions. The redidues of alpha-cypermethrin, bifenthrin, chlorpyrifos cypermethrin, tebufenpyrad, phenpyroximate, acetamiprid, thiamethoxam in plants, beans and soybean seeds gradually decreased and did not exceed established hygienic standards by the harvesting period in field studies. It is proved that if to follow the established hygienic and agrotechnical regulations for its application, the studied insecticides dissipate or decompose in crop plants during one vegetative season and do not pose a potential risk to the health of consumers.


2020 ◽  
pp. 1-13
Author(s):  
Alexander KOOF

On 29 March 2017, the UK made use of Article 50 of the Treaty on European Union (TEU) and thus initiated its withdrawal from the European Union. As a result, the UK left the European Union on 31 January 2020 (23:00 UTC). This paper provides a legal assessment of the impact of the UK’s withdrawal from the European Union (Brexit) on zonal authorisation and mutual recognition procedures regarding the authorisation of plant protection products. Many legal issues are unclear in this respect due to the lack of European and national case law. The German Administrative Court of Braunschweig had to decide in an urgent procedure on the effects of Brexit with regards to the authorisation of a plant protection product in the mutual recognition procedure.


Sensors ◽  
2019 ◽  
Vol 19 (3) ◽  
pp. 537 ◽  
Author(s):  
Pei Wang ◽  
Wei Yu ◽  
Mingxiong Ou ◽  
Chen Gong ◽  
Weidong Jia

Rapid detection of spraying deposit can contribute to the precision application of plant protection products. In this study, a novel capacitor sensor system was implemented for measuring the spray deposit immediately after herbicide application. Herbicides with different formulations and nozzles in different mode types were included to test the impact on the capacitance of this system. The results showed that there was a linear relationship between the deposit mass and the digital voltage signals of the capacitance on the sensor surface with spray droplets. The linear models were similar for water and the spray mixtures with non-ionized herbicides usually in formulations of emulsifiable concentrates and suspension concentrates. However, the ionized herbicides in formulation of aqueous solutions presented a unique linear model. With this novel sensor, it is possible to monitor the deposit mass in real-time shortly after the pesticide application. This will contribute to the precision application of plant protection chemicals in the fields.


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