scholarly journals The intensity of mechanical cultivation measures vs. the amount of weed seeds in the soil

2013 ◽  
Vol 54 (1) ◽  
pp. 163-173
Author(s):  
Marian Wesołowski ◽  
Cezary Kwiatkowski

The effect of the number of mechanical operations in sugar beets plantation on the amount and species composition of weed seeds in the 0-5 cm deep layer of the loessial soil was studied. It has been proved that reduction in the number of weed seeds depends upon both the frequency of weeding-out operations and the level of agrotechnic. The highest decrease in the number of fruit and weed seeds was caused by eightfold weed removal which took place during the period from emergence phase to the joining of sugar beet rows. Application of increased mineral fertilization, microelements, fungicides, and insecticides caused the number of weed seeds to be reduced by 5,9%, in comparison to extensive agrotechnical level.


Processes ◽  
2020 ◽  
Vol 8 (11) ◽  
pp. 1402
Author(s):  
Andrzej Baryga ◽  
Bożenna Połeć ◽  
Andrzej Klasa

Management of digestate from production of biogas has a great environmental importance. One of feedstock for biogas generation is beet pulp, a side product of sugar beet processing plant. In the paper a closed loop of beet pulp utilization at sugar beet plantation is presented. Effects of soil application of digestate obtained from digestion of sugar beet pulp were compared with standard mineral fertilizers. The field experiment was performed in three successive growing seasons. The studies were concentrated on quality of sugar beets grown under effects of two fertilization treatments—soil application of digestate cv. standard mineral fertilizers. It was found that some important quality indices (weight of single sugar beet root, content of sucrose in root tissues) were higher for beet harvested from digestate treatment compared to standard mineral fertilization (control). The concentration of harmful component (amide nitrogen) in sugar beets grown under conditions of digestate soil application was lower than in the control. It can be concluded that soil application of digestate from processing of sugar beet pulp can be treated as environmentally sound and effective method of its management.



Author(s):  
Vasiliy Kuril ◽  
Viktor Pryshlyak

Existing technologies and modern technical means do not always provide the required quality of technological processes for growing sugar beets. Increasing requirements necessitate continuous improvement of existing and creation of new high-performance machines and units to ensure high-quality production technologies of sugar beet crops. Improved technological processes for the production of sugar beet crops are described in the article. Such technological processes include: loosening the compacted topsoil and destruction of the soil crust before the emergence of sugar beet shoots, loosening the soil after emergence, feeding sugar beets with increased soil hardness and low moisture content, inter-row soil cultivation with hilling plants in lines. As a result of research of technologies for inter-row processing of sugar beets in the system of crop care, the following ratio was established: the optimal depth and width of the strips for cutting the top layer of the soil, depending on the depth of placement of the sown seeds; the distance between the ribs of the roller, depending on the depth of cutting the soil; the maximum depth of soil loosening in the row zone and the row spacing zone, depending on the depth of sowing seeds and the placement of the root system of beets; the required depth of soil loosening in the aisles, depending on the specified optimal depth of application of mineral fertilizers in the aisles; the required distance from the conditional centerline of the beet rows to the zone of mineral fertilization in the aisles, etc. The use of optimized technological processes makes it possible to create the necessary conditions for the growth and development of sugar beet plants on heavy-textured soils and after a significant amount of precipitation and an increase in soil density. In addition, the proposed innovative technologies ensure the preservation and even increase of soil moisture, reduction of sparseness and contamination of crops, as well as losses and damage to sugar beet roots during harvesting. The research results can be used to improve and optimize zonal technologies and technical means for growing sugar beets in conditions of high density and insufficient soil moisture, as well as in the educational process in the preparation of future specialists from agricultural engineering for scientific project activities.



2017 ◽  
Vol 7 (4) ◽  
pp. 517-524
Author(s):  
Yu. G. Mishchenko ◽  
I. M. Masik

The research program envisaged the studying of the variation of weediness of sugar beet crops under the influence of after crop sideration and the application of soil protection cultivation. The application of oil radish green manure provided a significant decrease in the amount of seed weeds in the entire 0-30cm layer of soil in comparison with the non-seeded background on 2.8-3.4 mln. seeds ha-1 and a significant decrease in the weed density of all biological groups weeds on 0.5-6.5 weeds m-2 and their weight on 5.6-77.4g m-2 for the period of growing sugar beets. Comparing to plowing the methods of mouldboard-free cultivation provided a significant increase in the quantity of weed seeds in the layer of soil 0-10cm to 18.3-22.9×106 seeds ha-1 and their significant decrease deeper than 10cm on 19.0-23.3 mln. seeds ha-1. Among the variants of mouldboard-free cultivation the lowest amount of weed seeds in the soil layer of 0-5cm was discounted at the deepest cultivation – 24.5 and 23.5×106 seeds ha-1. The decrease of the depth of the mouldboard-free cultivation led to a significant increase in the weed density (by 4.8-68.2 weeds m-2) and their weight (82.5-1193.5g m-2) in sugar beet crops and a substantial shortfall in yields of root crops – 2.9-5.8t ha-1. It follows from the research results that the application of after crop siderate of radish oil and basic mouldboard-free cultivation reduce the potential amount of weed seeds of root layer 0-30 сm; the deep soil cultivation on 28-30cm at the siderate background provides the greatest decrease in real weediness of sugar beet crops and allows to receive high yields of crops – 34.3 t ha-1.



Author(s):  
Y.Н. Mishchenko ◽  
E.A. Zakharchenko

Thіs study aimed to investigate the effect of  aplying post-harvest green manure on weediness of sugar beet crop rotation. Post-harvest green manure were grown under the conditions of the Scientific Research and Production Complex (NNVK) of Sumy National Agrarian University (Ukraine, Sumy oblast, Sumy region) after harvesting winter wheat from August to October 2000‒2004. After the plowing of it in the following 2001‒2006, a hybrid of sugar beet Umansky FM-97 was grown according to the technologies recommended for the local area. Potential weediness was determined by washing seeds from the soil on sieves at the beginning of the growing season and before harvesting sugar beets, and the actual weediness ‒ by quantitative-weight method before plowing the green manure and into the main stages of growth and development of sugar beets. The experimental plot had the least weediness under oilseed radish and the largest weediness under buckwheat as green manure. During growing seasons the radish oilseed formed good biomass and the number of weeds under its cover was noticeably reduced to 4.8 pieces/m2 and their mass ‒ to 21.8 g/m2. The findings obtained from statistic program showed the strongest correlation between the above-ground mass of radish and the number of weeds ‒ r = -0.55 and their weight ‒ r = -0.56. In the spring the amount of weed seeds under radish cover in the 0‒30 cm soil layer was reduced to 11.4 %, to 101 million units/ha, compared to the control without green manure. The impact factor of the effect of the radish biomass on the potential weediness was highest in all soil layers - within 70‒90 %. The biomass of radish decreased significantly the number of weeds in the sugar beet crops – by 39  to 19.2 pc/m2, and their weight ‒ by 23 % to 354 g/m2, compared to the control without green manure. Green radish oilseed mass had the greatest impact on reducing quantity of weeds – 67 % and their mass – 80 %. Radish cover provided the most significant reduction the potential weediness before harvesting sugar beets ‒ by 12 % in the 0-30 cm soil layer, compared to the control without green manure, where the amount of weed seeds was at 112 million units/ha. The inverse correlation of the radish biomass and the potential weediness at the time of sugar beet harvest was the closest ‒ r = -0.9.



2016 ◽  
pp. 517-524 ◽  
Author(s):  
Martin Wegener ◽  
Natalie Balgheim ◽  
Maik Klie ◽  
Carsten Stibbe ◽  
Bernd Holtschulte

KWS SAAT SE and Bayer CropScience AG are jointly developing and commercializing an innovative system of weed control in sugar beet for the global market under the name of CONVISO SMART. The technology is based on the breeding of sugar beet cultivars that are tolerant to herbicides of the ALS-inhibitor-class with a broad-spectrum weed control. This will give farmers a new opportunity to make sugar beet cultivation easier, more flexible in its timing and more efficient. The use of CONVISO, as new herbicide in sugar beet, will make it possible to control major weeds with low dose rates of product and reduced number of applications in the future. The tolerance is based on a change in the enzyme acetholactate synthase, which is involved in the biosynthesis of essential amino acids. This variation can occur spontaneously during cell division. During the development, sugar beets with this spontaneously changed enzyme were specifically selected and used for further breeding of CONVISO SMART cultivars. As such, these varieties are not a product of genetic modification. Field studies with CONVISO SMART hybrids showed complete crop selectivity and a broad and reliable efficacy against a large range of major weeds. The bio-dossier for an EU-wide registration of CONVISO was submitted in April in 2015. The variety inscription process is in preparation in different countries. The system CONVISO SMART is scheduled to be available to farmers in 2018 at the earliest.



2014 ◽  
pp. 228-231 ◽  
Author(s):  
Maciej Wojtczak ◽  
Aneta Antczak-Chrobot ◽  
Edyta Chmal-Fudali ◽  
Agnieszka Papiewska

The aim of the study is to evaluate the kinetics of the synthesis of dextran and other bacterial metabolites as markers of microbiological contamination of sugar beet.



2020 ◽  
Vol 69 (1-2) ◽  
pp. 1-4
Author(s):  
Milijanka Balandžić ◽  
Vera Stojšin ◽  
Mila Grahovac ◽  
Ferenc Bagi ◽  
Mladen Petreš ◽  
...  

SummarySugar beet leaf spot, caused by the air-borne fungus Cercospora beticola Sacc., leads to a decrease in sugar beet leaf mass and the consequent regrowth of leaves based on exploiting the sugar reserves stored in the plant’s roots, thus ultimately resulting in lower yields and sugar contents of sugar beets. Azoxystrobin belongs to the group of QoI fungicides, which inhibit mitochondrial respiration by blocking cytochrome c reductase. The QoI fungicides are characterized by a very high risk of resistance interfering with their biological activity. For the purpose of testing the azoxystrobin sensitivity of the Cercospora beticola population found at the site of Rimski Šančevi, a collection of 84 isolates was assembled and tested for sensitivity to azoxystrobin by measuring the mycelial growth on fungicide-amended media with the addition of SHAM. The results obtained indicate that none of the isolates tested exhibited complete sensitivity to azoxystrobin, 4% were found to have reduced sensitivity, 26% were moderately resistant and 70% were highly resistant. A higher proportion of resistant isolates recorded is associated with the loss of azoxystrobin biological efficacy at the experimental site.



2021 ◽  
Vol 36 ◽  
pp. 03017
Author(s):  
A.S. Avilov ◽  
N.Ya. Shmyreva ◽  
A.A. Zavalin ◽  
O.A. Sokolov

The studies were carried out under the conditions of a microfield experiment on typical chernozem (Belgorod region) with two soils (pH 5.0 and 6.5) with the addition of urea (enriched in 15N, 17.1 at. %) And effluents from a pig-breeding complex (PSC) at doses of 6 and 12 g N/m2 (against the background of phosphate and potash fertilizers, P6K6). The largest amount of nitrogen was consumed by sugar beets with the combined introduction of CCA and urea (25.8 g N/m2). When the soil was acidified to pHsalt 5.0, the consumption of nitrogen in mineral fertilizers decreased by 15-18%, soil ni-trogen – by 21-52%, and waste nitrogen – by 16%. At the same time, the immobilization of nitrogen in the fertilizer decreased by 13-18%, and the loss of gaseous nitrogen compounds increased by 47-108%. The effluent from the pig-breeding complex increased the immobilization of nitrogen in mineral fertilizers (by 38-46%) and reduced gaseous nitrogen losses (by 22-44%). The highest stability and productivity (root crop yield 1654 g/m2, tops yield 239 g/m2) was exhibited by agrophytocenosis on soil with pH 6.5 with the combined application of CCA and urea. When the soil solution was acid-ified to pH 5.0, the yield of beet root crops decreased by 30% and the yield of tops – by 24%. On soil with pH 5.0, fertilizers increased the sugar content in root crops by 0.2-1.3%, on soil with pH 6.5, they decreased by 1.3-2.0%.



Author(s):  
Lubov Belyaeva ◽  
Michail Pruzhin ◽  
Alla Ostapenko ◽  
Valentina Gurova

Introduction. Technological aids play a special role in sugar production technology, but their complex effectiveness requires a comprehensive and in-depth study. The research objective was to establish the patterns of change in the technological indicators of semi-finished products obtained from bacterially infected sugar beets with the combined use of an enzyme preparation, antimicrobial agent, and defoamer. Study objects and methods. The study involved such semi-finished products as juice (diffusion, pre-defecated, first and second saturation) and syrup, the quality of which was determined according to standard methods. The laboratory experiment was carried out on the basis of the second-order D-optimal Box-Behnken plan for three factors at three levels. Results and discussion. The research revealed positive dynamics of the following technological indicators: sucrose content, deposition rate, turbidity, chromaticity, and general purification effect. The sugar beet had the second degree of infection with mucous bacteriosis. Purified juice underwent lime-carbon dioxide purification and thickening under the combination of enzyme preparation Dextrasept 2, antimicrobial agent Betasept, and antifoam agent Voltes FSS 93. The greatest increase in sucrose at the level of 1.1% by DM weight was confirmed by a higher overall effect of purification of diffusion juice (2.2 %). The values of turbidity of the purified juice and syrup were below the threshold values. The low values resulted from the increase in the sedimentation rate of the pre-defective juice and the juice of the first saturation by an average of 4.1 and 3.2 times, respectively, due to the effective removal of high molecular weight compounds. The share of the enzyme preparation was 40–71%, antimicrobial agent – 19–49%, defoamer – 1.6–6.5%. The values of the multicriteria optimization parameter corresponded with technological indicators. The optimal combination (per 1000 tons of beets) included 6–8 kg of Dextrasept 2, 1.5–2.0 kg of Betasept, and 15–20 kg of Voltes FSS 93. As a result, the yield of white sugar increased by 0.25%. Conclusion. The regression dependencies can be recommended for predicting the main technological indicators of semi-finished products. The resulting data makes it possible to determine the effectiveness of the combined use of an enzyme preparation, antimicrobial agent, and defoamer in sugar production. Further research will identify the patterns of multifactorial interaction of these preparations.



2012 ◽  
Vol 58 (No. 1) ◽  
pp. 41-48 ◽  
Author(s):  
J. Pulkrábek ◽  
M. Kavka ◽  
V. Rataj ◽  
J. Humpál ◽  
L. Nozdrovický ◽  
...  

The risk rate of sugar beet growing was analyzed by using the algorithm for modelling and generating the random numbers based on the conditions determined in advance and the statistical distribution of sugar beets yield, the total costs, earnings and gross profit. On the bases of results of the analysis of economic risks of sugar beet production in years 1995–2009, it follows that the sugar beet growing in all regions is highly risky in the Czech Republic. The subsidy SAPS and TOP-UP per 1 hectare of sugar beet have a positive impact on its economics though not sufficient enough. In practice, it means that it is highly probable that the break-even point will not be achieved and thereby it is highly probable that the fixed costs are not covered and the update of machines is significantly limited. This happens mainly in the marginal regions. If the agricultural companies count on the separate sugar payment, the sugar beet growing is in all regions of the Czech Republic with acceptable risk.  



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