Efficiency of adaptive-integrated potato protection on high inFection background

Biomics ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 367-375
Author(s):  
Z.Yu. Siraeva
Keyword(s):  
Plant Protection ◽  
Growing Season ◽  
National Standards ◽  
Plant Residues ◽  
First Year ◽  
Dry Rot ◽  
Planting Material ◽  
Cultivation Technology ◽  
Bacterial Rot ◽  
High Level

One of the leading problems in potato growing is the inconsistency of phytosanitary parameters of seed potatoes with the requirements of national standards. This is facilitated by the traditionally used chemical protection of plants, which leads to the selection of resistant strains of pathogens and, as a consequence, a high level of infestation of the planting material. An environmentally oriented approach to potato cultivation technology is adaptive-integrated protection, which implies the creation of integrated plant protection systems against diseases. The aim of the study is to assess the effectiveness of adaptively integrated protection of potatoes against diseases of various etiologies against a high infectious background. The research was carried out in the Laishevsky district of the Tatarstan Republic on the Rodriga variety. According to the results of tuber analysis, it was established that the prevalence rates of diseases exceeded the requirements of GOST 33996-2016. Seed tubers were treated with Revus® fungicide; during the growing season, a double treatment with Famox® and Gymnast® preparations was carried out. In the variant of integrated protection, the treatment was carried out with half the norms of fungicides with the biopreparation Phytosporin®-AS. The use of adaptive-integrated protection of potato during the first growing season led to activation of the destruction of plant residues and an increase in the number of nitrogen-fixing microorganisms, a decrease in the content of phytopathogenic and to increase antagonistic microflora. The biological effectiveness of the integrated protection of Rodriga potatoes on high infectious background against in the first year of vegetation (late blight, vascular wilt of potato, dry rot of potato, black scab, bacterial rot) was 61.5-100%, which led to an increase crop yield.

scholarly journals ARGUMENTS OF SOIL PROTECTIVE CROP CULTIVATION TECHNOLOGY IN ZONE OF LOW MOISTURE

2020 ◽  
pp. 47-52
Author(s):  
N. А. Ryabtseva ◽  
Keyword(s):  
Crop Yield ◽  
Spring Barley ◽  
Soil Surface ◽  
Plant Residues ◽  
First Year ◽  
Crop Cultivation ◽  
Technology Introduction ◽  
Environmentally Safe ◽  
Cultivation Technology ◽  
The Cost

In the article we show arguments for achieving the research goal- to get economically feasible crop yield growth of sunflower , spring barley and winter wheat in zone of low moisture of Rostov region against common and soil protective technology. The experiment was two-factorial: factor А – crop rotation link, factor B – crop cultivation technology. Soil protective technology with after harvesting and plant residues on soil surface affected moisture collection and conservation in soil at the cost of best preservation of snow cover, decrease of aeration. Soil protective technology allowed to preserve in the field from 84,5 to 95,1 % of plant residues, which increased show cover for 16,5-28,4%. Significant impact on soil density soil protective technology didn’t demonstrate. Compared to common, it helped to increase the number of earthworms in 4,3 times, which is the evidence of environmentally safe soil quality. Influence of soil protective technology on field emergence of studied cultures is established. Survival of cereal crops was higher for 2-5 %, and sunflower was lower for 5,4 %. All the cultures increased crop yield when using soil protective technology. Effect of transition to soil protective technology grew from year to year. Profitability raised in the first year for 11%, in the second for 13%, in the third for 36%. Spring barley and sunflower showed big response on this technology. Introduction of soil protective technology in average in years of experiments improved profitability for 20 %.

Dynamics of CO2 emission from chernozems under agricultural use

2017 ◽  
Vol 4 (3) ◽  
pp. 43-49
Author(s):  
M. Miroshnychenko ◽  
O. Siabruk
Keyword(s):  
Carbon Dioxide ◽  
Agricultural Practices ◽  
Growing Season ◽  
Warm Period ◽  
Direct Seeding ◽  
Soil Tillage ◽  
Plant Residues ◽  
Hydrothermal Conditions ◽  
Organic Mineral ◽  
Mineral System

Aim. The comparison of the effect of hydrothermal conditions and various agricultural practices on the emission of CO 2 from chernozems in the Left-Bank Forest-Steppe of Ukraine. Methods. The dynamics of the intensity of carbon dioxide emissions from chernozem calcic (typical chernozem – in Ukrainian classifi cation) was studied during the growing season of 2011–2012. The observations were based on two fi eld experiments with various methods of soil till- age (6–7 years from the beginning of the experiment) and fertilization systems (21–22 years from the beginning of the experiment). Particularly, plowing at 20–22 cm, disking at 10–12 cm, cultivation at 6–8 cm and direct seeding using Great Plains drill were studied among the soil tillage methods. Mineral system (N 45 P 50 K 45 ), organic system (manure 8 t/ha) and combined organic-mineral system (manure 8 t/ha + N 45 P 50 K 45 ) were studied among fertilization systems. The intensity of CO 2 fl ux was determined using the non-stationary respiratory chambers by the alkaline absorption method, with averaging of the results during the day and the frequency of once a month. Results. During the warm period, the emission of carbon dioxide from the soil changes dynamically depending on temperature and humidity. The maximum of emission coincides with the periods of warm summer showers in June-July, the minimum values are characteristic for the late autumn period. The total emission losses of carbon in chernozems over the vegetation period ranged from 480 to 910 kg/ha and varied depending on the methods of tillage ± (4.0–6.0) % and fertilization systems ± (3.8–7.1) %. The changes in the intensity of CO 2 emission from the soil under different methods of soil tillage are associated with hydrothermal regime and the depth of crop residues location. The biggest difference is observed im- mediately after tillage, but in the spring period the differences are only 12–25 %, and after drying of the top layer of soil become even less. Direct seeding technology provides the greatest emission of CO 2 from chernozem, which is fa- cilitated by better water regime and more complete mineralization of plant residues on the soil surface. Annual losses of carbon are the least under disking of soil at 10–12 cm. The changes in the intensity of CO 2 emission from the soil under different fertilization systems are associated with the involvement of the additional organic matter from plant residues and manure to the microbiological decomposition. The greatest emission was observed under the organic- mineral fertilization system, which increased the loss of carbon by 7–8 % in comparison with the mineral system in the unfavorable hydrothermal year and by 11–15 % in the more favorable year. These differences are observed mainly during the fi rst half of the growing season when there is a clear tendency to increase the intensity of soil respiration. Conclusions. The hydrothermal conditions of the warm period of the year are decisive in the formation of the CO 2 emission fl ow from chernozems. Due to the improvement of agricultural practices, emissions might be reduced but not more that by 15 % of natural factor contribution.

CULTIVATION TECHNOLOGY ELEMENTS INFLUENCE ON NEW SPRING BARLEY BREWING VARIETIES YIELDS

1970 ◽  
pp. 21-25
Author(s):  
O. A. Artyukhova ◽  
O. V. Gladysheva ◽  
V. A. Svirina
Keyword(s):  
Growth And Development ◽  
Spring Barley ◽  
Photosynthetic Apparatus ◽  
Growing Season ◽  
Biological Indicators ◽  
Mineral Fertilizers ◽  
Mass Growth ◽  
Green Mass ◽  
Yield Structure ◽  
Cultivation Technology

The effect of applying various norms of mineral fertilizers on the biological indicators of crop plants during their growth and development in the Central non-black earth region in 2017-2019 was studied on the varieties of spring barley Vladimir, Reliable and Yaromir.such indicators as plant height, photosynthetic apparatus area, green mass growth, and elements of the yield structure were Studied. It was revealed that on average during the growing season, when the norms of mineral fertilizers were increased, the area of leaf plates increased and, as a result, the increase in green mass growth relative to the control variants increased by 56.3 % at (NРК)30, 82.3 % at (NРК)60, and 126.7 % at (NРК)90. The introduction of mineral fertilizers also influenced the formation of the crop structure. There was an increase in the tillering coefficient of varieties by 15.7%, 5.7 % and 21.3 % (Vladimir, Reliable and Yaromir, respectively) relative to the control, an increase in the number of grains in the ear from 15.1 to 22.4 PCs., the weight of 1000 grains from 48.0 to 55.7 g. and the weight of grain per ear from 0.7 to 1.2 g. There was a strong correlation between the doses of mineral fertilizers and the grain yield from + 0.80 to +1.0, and the variability was calculated.      

Methodological foundations of plant protection from dangerous pests in nurseries of fruit and berry crops

2020 ◽  
Vol 60 (1) ◽  
pp. 169-176
Author(s):  
A. S. Zeynalov
Keyword(s):  
Plant Protection ◽  
Methodological Approach ◽  
Source Material ◽  
Potential Threat ◽  
Planting Material ◽  
Berry Crops ◽  
Quality Category ◽  
Phytosanitary Measures

In the production of planting material, it is important to choose a healthy, highly productive source material, with typical varietal characteristics, and, if necessary, their disinfection), as well as reliable protection against dangerous pests at further stages of cultivation. This requires a scientifically based methodological approach and phytosanitary measures in several areas. First of all, it is required to study and classify in detail hazardous pests and pathogens, select methods for accounting and identifying in accordance with their degree of danger and the quality category of planting material. Apply comprehensive measures to prevent the entry of pests in the territory of growing planting material and timely eliminate the centers of potential threat.

scholarly journals Growth, Development and Ornamental Value of Miscanthus sinensis (Andersson) Species Depending on the Dose of Shrimp Biowaste

Agriculture ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 67
Author(s):  
Piotr Żurawik
Keyword(s):  
High Salinity ◽  
Mineral Soil ◽  
Growing Season ◽  
Miscanthus Sinensis ◽  
Alkaline Ph ◽  
Important Group ◽  
Planting Material ◽  
Miscanthus Giganteus ◽  
Before And After ◽  
Marine Products

Crustaceans, including shrimps, are an important group of marine products processed in over 50 countries around the world. It is one of the most profitable and fast-growing processing branches. About 30 to 40% of crustaceans are used immediately after fishing, while 60–70% are processed. This generates thousands of tons of waste, proper management of which becomes increasingly important. The study was conducted in the years 2015–2017. Planting material included rhizomes of Miscanthus sinensis and Miscanthus × giganteus. Shrimp shells, dried and fragmented into 2–3 mm long pieces, were added to the soil at a dose of 5%, 10% and 15%. Mineral soil without the dried waste served as control. pH and substrate salinity were determined both before and after the growing season, and vegetative and generative traits of the plants were assessed. Shrimp biowaste is rich in N, P, K, Ca and Mg, has alkaline pH and high salinity. Its effects on plants depend on its dose and plant species. Miscanthus sinensis turned out more sensitive to the substrate salinity but in both species shrimp biowaste improved their ornamental value. For Miscanthus sinensis the most beneficial dose was 5%, while for Miscanthus × giganteus it was 15%.

scholarly journals INFLUENCE OF BIOLOGICAL PROTECTION OF PLANTS ON SOIL MYCOCENOSIS WHEN GROWING LEAF SALAD UNDER ARID CLIMATE OF ASTRAKHAN REGION

ÈKOBIOTEH ◽  
2021 ◽  
Vol 4 (3) ◽  
pp. 221-226
Author(s):  
D.G. Baubekova ◽  
Keyword(s):  
Biological Activity ◽  
Drip Irrigation ◽  
Plant Protection ◽  
Growing Season ◽  
Arid Climate ◽  
Phytopathogenic Bacteria ◽  
Agent Based ◽  
Air Temperatures ◽  
Biological Protection ◽  
Protection Agent

Territories with arid climate are characterized by insufficient atmospheric humidification at high air temperatures. Therefore, the use of drip irrigation during the growing season of plants is an effective agrotechnical method of farming. However, its use causes a number of unfavorable consequences that can be avoided by using biological plant protection agents with pronounced biological activity against phytopathogenic bacteria, micromycetes, insects and viruses. These remedies are based on the introduction of microorganisms and their metabolites into the biotechnological process. A biological plant protection agent based on Bаcillus atrophaeus ACIM В–11474 has been developed and its effect on the mycocenosis of the studied soils when growing lettuce in the arid climate of the Astrakhan region using drip irrigation has been studied.

scholarly journals Rust and leaf spot diseases on American elderberry plants

2017 ◽  
Author(s):  
◽  
Kaley Hensel
Keyword(s):  
Leaf Spot ◽  
Dry Weight ◽  
Growing Season ◽  
Significant Loss ◽  
Leaf Wetness ◽  
Conservative Estimate ◽  
Sambucus Nigra ◽  
Shoot Dry Weight ◽  
Harvest Dates ◽  
High Level

Elderberry rust (Puccinia sambuci Schewin.) Arthur (=P. bolleyana) and leaf spot diseases are frequently found in commercial American elderberry (Sambucus nigra L. subsp. canadensis L.) plantings throughout the growing season in Missouri. Thus, studies were conducted to ascertain if rust infections affect plant growth, fruiting, or berry puree quality. Rust symptoms were observed in early April at 9 to 18[degrees] C, [greater than or equal to] 3 h leaf wetness, and [greater than or equal to] 85% relative humidity. When young, potted elderberry plants averaged 3 to 6 rust pustules/plant, vegetative growth was not adversely affected. However, field-grown elderberry plants heavily infected with rust (137 pustules/cane) lost nearly twice as many leaves as controls during the growing season, indicating rust-induced defoliation. Shoot dry weight of these heavily infected canes was also 32% less than that of controls. First and last harvest dates were advanced by the high level of rust infection on 'Wyldewood' elderberry canes, but not by low pustules numbers ([less than] 6 pustules/plant) on 'Bob Gordon' or 'Ozark' plants. Similarly, berry yields were not significantly different at low infection levels, even though rust-infected 'Bob Gordon' plants had a 31% reduction in yield with an estimated $440/ha loss of income. Heavily-infected 'Wyldewood' canes had a significant loss in berry yield (47%) and potential income ($2,295/ha), assuming a conservative estimate of five canes/plan. In another study, Colletotrichum was isolated from elderberry leaf spot lesions and identified before subsequent re-inoculation of elderberry plants with this pathogen. Three species of Colletotrichum (C. salicis Funkel, C. kahawae subsp. ciggaro Wollenw., and C. aenigma C.M. Tian and Z. Li) were putatively identified as being casual agents of leaf spot indicating the diversity of species within this genus on elderberry plants.

scholarly journals Results of the weed control in onion (Allium Cepa L.) field

2021 ◽  
Vol 1 (3) ◽  
pp. 1-9
Author(s):  
O. Ariunaa ◽  
T. Erdenenzorig ◽  
B. Dondov
Keyword(s):  
Weed Control ◽  
Seed Production ◽  
Experimental Research ◽  
Plant Protection ◽  
Growing Season ◽  
Crop Damage ◽  
Weed Species ◽  
Domestic Production ◽  
Allium Cepa L ◽  
Production Demand

Our country has provided about 52% of vegetables from domestic production, the rest part imported others from outside. Thus, imports of potatoes and vegetables have been reduced last year, for this reason, main vegetable seeds, were produced domestically and provided over 80 percent of the country’s demand. In the future domestic production demand of vegetable goal set working to provide by 100 percent from government our country in this connection issues urgent need to solve sowing seeds, variety supply, seed production, and plant protection. According to our research, during the growing season, 150-350 weeds growing per 1m2 of rounded onions shows that the amount of crop damage is relatively high. For the purpose of control against weeds in the onion field with 3 repetitions of 7 variants of 2 types of herbicides are conducted experimental research. These include; pre-emergent Estamp (Stomp) herbicide applied in doses 2.5; 3.5 l/ha that controls all types of weeds, but showed results of 65.2-72.4%. The growing season during a selective post-emergent of Gaur herbicide in doses 0.7; 0.9l/ ha used against broadleaf and grassy weeds that became clear of weed species density reduced by 92.7-93.4%. It was tested in this study Pendimethalin, 33% + Oxyfluorfen 24 % mixture herbicides have reduced the number of weeds by 92.4-94.1%.

scholarly journals Business Exit During the COVID-19 Pandemic: Non-Traditional Measures in Historical Context

2021 ◽  
Vol 2021 (025) ◽  
pp. 1-59
Author(s):  
Leland D. Crane ◽  
◽  
Ryan A. Decker ◽  
Aaron Flaaen ◽  
Adrian Hamins-Puertolas ◽  
...  
Keyword(s):  
Small Firms ◽  
Historical Context ◽  
First Year ◽  
Tracking Data ◽  
Large Share ◽  
Alternative Measures ◽  
High Level ◽  
Official Data ◽  
The U.S

Lags in official data releases have forced economists and policymakers to leverage "alternative" or "non-traditional" data to measure business exit resulting from the COVID- 19 pandemic. We first review official data on business exit in recent decades to place the alternative measures of exit within historical context. For the U.S., business exit is countercyclical and fairly common, with about 7.5 percent of firms exiting annually in recent years. Both the high level and the cyclicality of exit are driven by very small firms and establishments. We then explore a range of alternative measures of business exit, including novel measures based on paycheck issuance and phone-tracking data, which indicate exit was elevated in certain sectors during the first year of the pandemic. The evidence is mixed, however; many industries have likely seen lower-than-usual exit rates, and exiting businesses do not appear to represent a large share of U.S. employment. Actual exit is likely to have been lower than widespread expectations from early in the pandemic. Moreover, businesses have recently exhibited notable optimism about their survival prospects.

scholarly journals Pre-university informal engagement with mathematical activities and the decision to study mathematics at university

2020 ◽  
Vol 18 (3) ◽  
pp. 10-22
Author(s):  
Katie Steckles ◽  
Peter Rowlett ◽  
Angharad Ugonna
Keyword(s):  
Social Media ◽  
Career Choice ◽  
Small Sample ◽  
First Year ◽  
Mathematical Activity ◽  
Online Videos ◽  
High Level ◽  
Watching Tv ◽  
Mathematical Activities

A survey was created to investigate the experiences of mathematics undergraduates with informal mathematical activity prior to starting university, and links these with the decision to study mathematics. A questionnaire was completed by a small sample of first-year undergraduates at two UK universities. Generally, incoming undergraduates are shown to have a high level of enjoyment of mathematics and engagement with informal mathematical activity. Popular activities included mathematical puzzles and games, and online videos about maths. Students were often engaged with family or via social media, playing computer, tablet or phone games, watching TV game shows with mathematical aspects and participating in organised competitions. Only around half engaged via talks or workshops organised through school and watching more structured documentaries or videos of lectures. Few participated in organised clubs. It seems there was greater engagement with ‘fun’ aspects of mathematics than with activities which demonstrate mathematics linked to career choice. The link to goals of outreach and similar initiatives is discussed, with further research indicated.

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