scholarly journals Optimality Conditions of Agricultural Production With Fixed Input Costs

2021 ◽  
Vol 9 (2) ◽  
pp. 151
Author(s):  
Angel Ramon Sanchez Delgado ◽  
Sergio Drumond Ventura
Keyword(s):  
Optimality Conditions ◽  
General Problem ◽  
Agricultural Production ◽  
Computational Procedure ◽  
Fixed Cost ◽  
Agricultural Crop ◽  
Economic Decisions ◽  
Fixed Input

We present a computational procedure to maximize the production of a given agricultural crop with limited inputs (water-nitrogen), and where a fixed cost (or expense) of the inputs (general problem of agricultural production) is imposed. Theoretically the procedure is based on the Karush-Kuhn-Tucker optimality conditions and numerically was tested with three different scenarios defined in the literature, for the cultures: Lettuce, Oats, Onions and Melons. In each agricultural scenario considered, it was possible to verify that the procedure is a reliable alternative in making agribusiness economic decisions.

scholarly journals Use of Disposed Agricultural Lands in LLC “Alliance-Agro” in the Sengileevsky District of the Ulyanovsk Region

2021 ◽  
Vol 37 ◽  
pp. 00153
Author(s):  
Olga Tsapovskaya ◽  
Elena Provalova ◽  
Yuri Ermoshkin ◽  
Nikolay Khvostov ◽  
Oksana Khamzina
Keyword(s):  
Land Use ◽  
Agricultural Production ◽  
Agricultural Land ◽  
Arable Land ◽  
Agricultural Crop ◽  
Unused Land ◽  
Ulyanovsk Region ◽  
Effective Use ◽  
Agricultural Areas ◽  
Trees And Shrubs

The paper studies the issue of the use of disposed agricultural land through the example of LLC “Alliance-agro in Sengileevsky district of the Ulyanovsk region. The authors consider the grounds for cultural and technical work and provide the results of a survey of unused arable land on the farm. A technology for the development of disposed agricultural land is proposed. Everyone knows that agricultural land is of particular importance as a means of agricultural production and is the second largest category of land in the unified land fund of the Russian Federation in terms of area, which includes the best and fertile lands making up the heritage of the country. Despite the fact that the schemes for the use of agricultural land are developed, many questions of a theoretical, methodological and applied nature need to be improved, since this is associated with incessant changes in the legal and organizational systems of land use. As a result of irrational use of land, degradation, littering, overgrowing with trees and shrubs of agricultural areas occurs. These processes lead to the fact that fertile lands are withdrawn from circulation. Our research is aimed to solve the problems in the field of the improvement of the cadastral registration of lands, the process of the organization of rational land use, as well as the most effective use of unused lands overgrown with trees and shrubs. The solution to this problem will help the rational transformation of the agricultural land use system and increase in their efficiency. Moreover it will help to solve the problem of the involvement of unused land in agricultural production and increase the efficiency of cadastral registration of agricultural land. As a result of the land clearing proposed by the authors, the sites of this object will be put into agricultural circulation, where any zoned agricultural crop can be grown from the first year of development in case of a favorable water-air regime in the root layer and complex agrochemical cultivation.

scholarly journals Pyrolysis of wheat and barley straw

2020 ◽  
Vol 66 (No. 1) ◽  
pp. 8-17
Author(s):  
Anežka Sedmihradská ◽  
Michael Pohořelý ◽  
Petr Jevič ◽  
Siarhei Skoblia ◽  
Zdeněk Beňo ◽  
...  
Keyword(s):  
Agricultural Production ◽  
Soil Amendment ◽  
Crop Residues ◽  
Experimental Studies ◽  
Atomic Ratio ◽  
Barley Straw ◽  
Agricultural Crop ◽  
Biomass Pyrolysis ◽  
Solid Product ◽  
Practical Temperature

Pyrolysing agricultural crop residues and other biomass constitutes a newer method of transforming often difficult, waste materials into a novel type of soil amendment/additive. Simultaneously, this process also makes it possible to exploit part of the energy released in the agricultural production. Biochar, viewed as the solid product of biomass pyrolysis, is a remarkable, porous material, rich in carbon. Two agricultural crop residues, such as wheat and barley straw, were selected for the experimental studies. The results indicate that the practical temperature for the production of biochar from the two explored materials occurs in the vicinity of 600 °C. Starting at this temperature, the biochar produced complies safely with the principal European Biochar Certificate standards (EBC 2012). Thus, for the wheat straw and barley straw – originated char, the content of the carbon amounts to 67.2 and 67.0 mass %, the atomic ratio H : C is as large as 0.032 and 0.026, and the specific surface area amounts to 217 and 201 m<sup>2</sup>·g<sup>–1</sup>, respectively.

Analysis of the development and support of agriculture in the regions of the Non-Black Earth Zone

2021 ◽  
pp. 14-21
Author(s):  
E.A. Gataulina ◽  
◽  
E.A. Shishkina ◽  
Keyword(s):  
Agricultural Production ◽  
Food Systems ◽  
Uneven Development ◽  
Agricultural Product ◽  
Agricultural Crop ◽  
Agricultural Producers ◽  
Financial Activity ◽  
Development Area ◽  
Activity State ◽  
Crop And Livestock Production

In order to develop a forecast of the regional agri-food systems, carried out at VIAPI named after A.A. Nikonov, an analysis of the development of agriculture in the regions of the Non-Black Earth Zone is carried out. The conclusion is made about the adaptation of agricultural producers in the zone to market conditions due to the contraction of agricultural production in comparison with 1990, while establishing the profitable work of most agricultural organizations. The uneven development of the regions of the zone was revealed in terms of the indices of agricultural, crop and livestock production (comparison of 2018 with 1990 and 2000), the structure of production by categories of farms, indicators of financial activity, state support, recommendations for its improvement were given. It is concluded that it is premature to exclude the Non-Black Earth Zone as a priority development area from the State Program for the Development of Agriculture and Regulation of Agricultural Product Markets.

scholarly journals The Use of Freshwater Sapropel in Agricultural Production: A New Frontier in Kenya

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Sylvia I. Murunga ◽  
Eliud N. Wafula ◽  
Joseph Sang
Keyword(s):  
Agricultural Production ◽  
Crop Production ◽  
Nutrient Management ◽  
Organic Fertilizer ◽  
Climate Change Impacts ◽  
Weather Conditions ◽  
Environmental Conservation ◽  
Agricultural Crop ◽  
Soil Microbial Diversity ◽  
Sustainable Food

Opportunities for sustainable agriculture development in Kenya which heavily depends on healthy soil and soil microbial diversity can be found in the promotion of organic farming. The increasing populations, higher demands for animal and plant products, climate change impacts, and weather conditions necessitate novel ideas and technologies to try reverse the adverse effects of excessive use of inorganic fertilizers and to maximize the potential of the land. Sapropel, a promising biological deposit from freshwater lakes, has found its limelight in its use in agricultural crop production as a soil conditioner and biofertilizer. This could be an ultimate practice for sustainable food and energy production in Kenya. This review aims at presenting information in the literature about the potential use of the organic fertilizer based on sapropels in intensified crop production and their main effects on plant growth. It discusses soil fertility, the composition of sapropels, and their application and advantages in agricultural production. It is evident from the review that sapropel can be considered as a resource that is valuable with wide application possibilities in agriculture. Sapropel can present an important contribution to the solution of the conservation of the fertility of the soil for integrated nutrient management systems to maintain agricultural productivity and help in environmental conservation.

Collectivisation and Rice Production

1962 ◽  
Vol 9 ◽  
pp. 94-104
Author(s):  
Hoang Van Chi
Keyword(s):  
Agricultural Production ◽  
Aquatic Plant ◽  
Rice Production ◽  
Agricultural Crop ◽  
Practical Experiment ◽  
Tropical Areas ◽  
North Vietnam

Until 1949, Communist rule was still restricted to states where wheat forms the basis of agricultural production. But when Mao Tse-tung extended his control to territories south of the Yangtse river, thereby enabling Ho Chi Minn to establish later a twin régime hi North Vietnam, the problem of collectivisation first appeared in tropical areas where rice is the main agricultural crop. From then on, an unforeseen problem of major importance has confronted the two Asian Communist leaders. Unlike their other colleagues in the Socialist camp, these two have had to adapt the rigorous norms of the collective system to the production of rice, an extremely delicate aquatic plant. Their relentless efforts to accomplish this are unprecedented and, now that the practical experiment has been in progress for several years, it is possible to make a preliminary appraisal of the results.

scholarly journals Effectiveness of microbial preparations in growing Cicer arietinum L. in the steppe zone of the Crimea

2020 ◽  
Vol 224 ◽  
pp. 04005
Author(s):  
S V Didovich ◽  
O P Ptashnik ◽  
V S Pashtetskiy
Keyword(s):  
Agricultural Production ◽  
Mineral Fertilizer ◽  
Weather Conditions ◽  
Steppe Zone ◽  
Mineral Fertilizers ◽  
Agricultural Crop ◽  
Seed Productivity ◽  
Safe Production ◽  
The Crimea ◽  
Southern Chernozem

Currently, the main priorities in agricultural production are ecologization, rational use of natural resources, resource-conservation and economic practicability. Therefore, biotechnologies for growing agricultural crop develop. The article presents the results of effectiveness of pre-sowing treatment with polyfunctional microbial preparations compared to the use of mineral fertilizer Ammophos in growing Cіcer arіetіnum L. in the steppe zone of the Crimea on non-irrigated southern Chernozem in 2015-2017. Weather conditions during the growing season and treatment with microbial preparations, as well as the use of mineral fertilizers, affected seed productivity of chickpeas in the time of research. On average, for three years, bacterization with Rhizobofit, Cyano-rhizobial consortium and complex Rhizobofit + Phosfoenterin + Biopolicyd significantly increased 1000 seeds weight and seed yield by 16.67 g (6.7%) and 0.15 t/ha (10.8%); 27.27 g (9.8%) and 0.1 t/ha (7.2%); 14.14 g (5.5%) and 0.22 n/ha (15.1%), respectively, compared to the Ammophos application in dose N30P30 (Duncan’s test p < 0,000121). These preparations are recommended for biologised agrotechnology for growing chickpea in the steppe zone of the Crimea and obtaining ecologically safe production.

scholarly journals Soybean: sources from the VIR collection of genetic resources

2020 ◽  
Vol 181 (1) ◽  
pp. 48-52
Author(s):  
A. Y. Nekrasov
Keyword(s):  
Agricultural Production ◽  
Animal Husbandry ◽  
Field Studies ◽  
High Yield ◽  
Animal Origin ◽  
Soybean Seeds ◽  
Agricultural Crop ◽  
Nodule Bacteria ◽  
Breeding Programs ◽  
Leguminous Crops

Soybean is an extremely valuable crop due to its unique biochemical composition, which underpins multifunctional utilization of this crop and high profitability of its industrial and agricultural production. Soybean seeds accumulate up to 45% of high-quality vegetable protein, which is close in composition to the protein of animal origin. Soybean is also of great importance as an oil-producing crop, accumulating up to 28% of oil in its seeds. It is widely used in animal husbandry for the production of maize-soybean silage and haylage. It can also be used as a green manure crop to enrich the soil with nitrogen at the expense of nodule bacteria. High demand and the price make it a highly profitable agricultural crop. It is clear from the above-mentioned advantages that soybean is of great interest to breeders. The Kuban Experiment station of VIR conducts field studies of new soybean cultivars using the practices worked out for leguminous crops at VIR. Three years of research have resulted in identification of promising cultivars, sources and donors of various valuable traits. This article is based on the data obtained from the study of the soybean collection from 2014 to 2016. Accessions k-11385, k-11479, and i-623931 were distinguished for their high yield. The following accessions stood out for their seed productivity per plant: k-1475, k-11472, k-11535, k-11466, k-11478, k-11577, k-11467, and k-11469. The size of seeds was the best in accessions k-11489, k-11491, k-11533, k-11529, k-11537, i-623952, i-623967, i-623980, i-623958, and i-623987. Two accessions appeared noticeable for the height of lower pod attachment: i-623960 and k-11494. All selected accessions can be used in breeding programs as sources of valuable traits.

Influence of Magnetic Fields on Solar Hydrodynamics: Experimental Results

1977 ◽  
Vol 36 ◽  
pp. 143-180 ◽  
Author(s):  
J.O. Stenflo
Keyword(s):  
Solar Activity ◽  
Energy Balance ◽  
Magnetic Fields ◽  
Solar Atmosphere ◽  
General Problem ◽  
Solar Rotation ◽  
Active Regions ◽  
Physical Conditions ◽  
Dynamic Phenomena

It is well-known that solar activity is basically caused by the Interaction of magnetic fields with convection and solar rotation, resulting in a great variety of dynamic phenomena, like flares, surges, sunspots, prominences, etc. Many conferences have been devoted to solar activity, including the role of magnetic fields. Similar attention has not been paid to the role of magnetic fields for the overall dynamics and energy balance of the solar atmosphere, related to the general problem of chromospheric and coronal heating. To penetrate this problem we have to focus our attention more on the physical conditions in the ‘quiet’ regions than on the conspicuous phenomena in active regions.

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