scholarly journals Changes in the content of chlorophyll in leaves when using pesticides and microfertilizers

2021 ◽  
Vol 843 (1) ◽  
pp. 012043
Author(s):  
E V Zheryakov ◽  
Yu I Zheryakova

Abstract One of the ways to reduce the phytotoxicity of herbicides on cultivated plants is the use of trace element fertilizers. The article presents the results of research on the influence of liquid trace element fertilizers on the content of chlorophyll in leaves and the productivity of sugar beet. It was found that three days after the treatment of crops with herbicides together with microfertilizers, the amount of chlorophyll a and b pigments was 4% higher than when applying herbicides without microfertilizers. In the control version, where pesticides and microfertilizers were not applied, the content of chlorophyll in the leaves was 0.350% by weight. As the observations showed, the photosynthetic activity of sugar beet plants was restored 4-5 days after the treatment by herbicides. Herbicides, with the simultaneous introduction of micro-fertilizers, had a less negative effect on the photosynthesis of sugar beet than herbicides alone. The biological yield of root crops in the variant with the combined use of pesticides and microfertilizers was 56.36 t/ha. The polarization of sugar beet root crops with the combined use of pesticides and microfertilizers was 0.64% higher than in the variant without microfertilizers.

Author(s):  
В.О. ГОРОДЕЦКИЙ ◽  
С.О. СЕМЕНИХИН ◽  
Н.М. ДАИШЕВА ◽  
Н.И. КОТЛЯРЕВСКАЯ ◽  
М.М. УСМАНОВ

Величина неучтенных потерь сахара в России составляет 0,06–0,14 млн т в год, что обусловливает необходимость внедрения мероприятий по их снижению. В статье представлены результаты исследований по снижению микробиологической обсемененности диффузионного сока, очищенного сока II сатурации и сиропа, выведенного на длительное хранение. Рассмотрены причины, обусловливающие обсемененность корнеплодов сахарной свеклы патогенными микроорганизмами. Приведена методика постановки лабораторных исследований. Установлено, что на стадии обработки экстрагента применение сернистого ангидрида позволяет снизить обсемененность диффузионного сока МАФАнМ и плесневыми грибами на 41,75 и 40,26% соответственно. На стадии обработки фильтрованного сока II сатурации применение сернистого ангидрида снижает обсемененность сока МАФАнМ на 76,67% и практически полностью обеспечивает угнетение плесневых грибов. На стадии обработки сиропа применение сернистого ангидрида позволяет снизить обсемененность сиропа после длительного хранения МАФАнМ и плесневыми грибами на 68,97 и 58,33% соответственно, тогда как применение бисульфита натрия – только на 31,03 и 33,33% соответственно. На основании результатов исследований сделан обоснованный вывод, что обработка полупродуктов свеклосахарного производства сульфитсодержащими реагентами, а именно сернистым ангидридом, является эффективным технологическим приемом для обеспечения снижения неучтенных потерь сахарозы, возникающих в результате жизнедеятельности микроорганизмов. The value of unaccounted sugar losses in Russia is 0,06–0,14 million tons per year, which makes it necessary to implement measures to reduce them. The article presents the results of studies to reduce the microbiological contamination of diffusion juice, purified juice of the and syrup removed for long-term storage. The reasons for the contamination of sugar beet root crops with pathogenic microorganisms are considered. The method of setting up laboratory tests is given. It was found that at the stage of processing the extractant, the use of sulfurous anhydride reduces the contamination of the diffusion juice with MAFAnM and mold fungi by 41,75 and 40,26%, respectively. At the stage of processing filtered juice of second carbonation, the use of sulfur dioxide reduces the contamination of MAFAnM juice by 76,67% and almost completely suppresses mold fungi. At the syrup processing stage, the use of sulfurous anhydride reduces the contamination of the syrup after long-term storage by MAFAnM and mold fungi by 68,97 and 58,33%, respectively, while the use of sodium bisulfite – only by 31,03 and 33,33%, respectively. Based on the results obtained, a reasonable conclusion is made that the treatment of beet sugar production intermediates with sulfite-containing reagents, namely, sulfur anhydride, is an effective technological technique to ensure the reduction of unaccounted losses of sucrose resulting from the vital activity of microorganisms.


2021 ◽  
Vol 659 (1) ◽  
pp. 012017
Author(s):  
V A Ovtov ◽  
N S Chirkova ◽  
V M Gudin

Author(s):  
A.V. Zagorulko ◽  
◽  
T.Ya. Brovkina ◽  
V.A. Kalashnikov

The influence of cultivation technology on the productivity of sugar beet has been established with two studied methods of basic soil cultivation. The best in terms of sugar collection (114.2 and 115.5 c / ha) was the option with pesticide-free cultivation technology, both against the background of moldboard and moldboard with periodic deep loosening of soil cultivation. The maximum bioenergy efficiency has been revealed for this technology. At the same time, the highest values of the coefficients of net efficiency and the ratio of received and expended energy were noted, as well as the maximum yield of sugar beet root crops per 1 gJ of energy expended, regardless of soil cultivation


2019 ◽  
pp. 13-20 ◽  
Author(s):  
L. Krotiyuk ◽  
О. Dubchak ◽  
L. Andrieieva ◽  
M. Kornieieva

The aim of the study was to create new starting materials of beets with improved oval conical root form, higher weight and sugar content to get high yielding hybrids. Based on the results of the research on root beet form improvement by hybridization of sugar beet root with fodder beet it was proven that the fodder beet can exceed sugar beet on productivity twice under identical agro climatic conditions. To transmit the root-shaped trait, it is not enough to have one crossing with the plants-carriers of the genes controlling the roundness of the form, since the selection of plants in F2 does not exceed 3 % and thus additional cross-breeding is necessary. The estimation of initial forms of beets according to the productivity elements for hybridization is given in the article (the yield of sugar beets recipients samples made 39.7–51.1 t/ha, that of donor of the feed beet variety made 60.5 t/ha). In the hybrid offspring, root crops varied in shape from a spindle-shaped to an oval-conical. Root crops of hybrid specimens of oval and wide-conical shapes were selected, which outweighed the initial forms by productivity: yields – by 3.2–20.8 %, sugar content – by 1.0–3.5 %. Due to the fact that different forms of beets root crops differ in productivity, it is necessary to transfer the form of root crops from fodder beet as more productive to sugar beet. It was noted that sample B11360-68 / Biamara F2 with the highest root mass (780 g) had the highest leaf area of 1.2 m2. The yields made 104.8 % and 103.5 %, respectively by sugar content of the original form. In the second generation we obtained 45.5–59.0 % of root beets with oval and wide-conical shapes and increased by 3.2–20.8 % yield compared to the original forms. The collection of breeding materials of Verkhnyatskiy RSS was supplemented by an oval-conical hybrid specimen and three broad-conical specimens with a smooth root surface that had a less pronounced orthostich and had a high root mass. Key words: sugar beet, fodder beet, productivity, beet root form, crossing, selection.


2019 ◽  
Vol 15 (1) ◽  
pp. 99-104
Author(s):  
Я. П. Цвей ◽  
О. І. Присяжнюк ◽  
С. О. Бондар ◽  
С. М. Сенчук

Sign in / Sign up

Export Citation Format

Share Document