Algorithms to Optimise Cropping Diversity with Cover Crops

Romashchenko, М. I.; Matiash, T.; Bohaienko, Vsevolod; Kovalchuk, V.A.; Lukashuk, V.; Saidak, R. V.

doi:10.1201/9781003187301-5

Cited by 2 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The value of C NPK (N,P,K) is obtained [ROMASHCHENKO et al 2016a] as the minimal price of the set of fertilisers retrieved from the database that provides the quantities of N,P,K nutrients calculated with Equation (4) for the fixed yield Y . The maximal profit is calculated maximising P(A,c) by the choice of Y using the gradient method.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Journal of Water and Land Development

2022

View full text Add to dashboard Cite

The formation of optimal crop rotations is virtually unsolvable from the standpoint of the classical methodology of experimental research. Here, we deal with a mathematical model based on expert estimates of "predecessor-crop" pairs' efficiency created for the conditions of irrigation in the forest-steppe of Ukraine. Solving the problem of incorporating uncertainty assessments into this model, we present new models of crop rotations' economic efficiency taking into account irrigation, application of fertilisers, and the negative environmental effect of nitrogen fertilisers' introduction into the soil. For the considered models we pose an optimisation problem and present an algorithm for its solution that combines a gradient method and a genetic algorithm. Using the proposed mathematical tools, for several possible scenarios of water, fertilisers, and purchase price variability, the efficiency of growing corn as a monoculture in Ukraine is simulated. The proposed models show a reduction of the profitability of such a practice when the purchase price of corn decreases below 0.81 EUR•kg -1 and the price of irrigation water increases above 0.32 EUR•m -3 and propose more flexible crop rotations. Mathematical tools developed in the paper can form a basis for the creation of decision support systems that recommend optimal crop rotation variations to farmers and help to achieve sustainable, profitable, and ecologically safe agricultural production. However, future works on the actualisation of the values of its parameters need to be performed to increase the accuracy.

show abstract

Section: Methodsmentioning

confidence: 99%

“…3) as a solution to the problem of convex optimisation with constraints. The latter is proposed to be solved by the gradient method with the pseudo-inversion operation that performs projection on the set of permissible solutions [ROMASHCHENKO et al 2016a].…”

Section: Methodsmentioning

confidence: 99%

Journal of Water and Land Development

2022

View full text Add to dashboard Cite

show abstract

“…For this, it was proposed to ensure the transparency of the tariff formation system, the necessity to involve water users in the formation of tariffs [11; 16], the participation of interested parties in decision-making in the relevant sphere of state policy, improving the quality of irrigation and drainage services and stimulating the public-private partnership mechanism [12]. Tariffs for irrigation water supply should cover all costs of those services, that is, their level should be sufficient to transfer irrigation to self-financing [16]. According to the results of calculations in 2019 prices, the transfer of irrigation to full self-funding will be possible with the average amount of water charges in the south of 3.0-3.5 UAH per m 3 and bringing the actual irrigated area on each irrigation system to 65-70 % of the design level [14; 6].…”

Section: Relevance Of Researchmentioning

confidence: 99%

“…Calculations of the economic payback of investments in irrigated agriculture do not contradict the indicators of economic return with incomplete coverage of the control area in Ukraine now. Scientists previously noted that tariffs for services should be formed with the participation of all interested parties, which is realistic only under the condition of a transparent system of tariff formation [11; 14], at the same time, a transition from the practice of reimbursing the cost of water supply services to introduction of the tariff formation system [14].…”

Section: Relevance Of Researchmentioning

confidence: 99%

Analysis of Methodical Approaches to the Formation of Water Tariffs for Irrigation and Compensation of Costs for Reclamation Infrastructure: The Experience of Eu Countries

Romashchenko,

Saidak,

Panteleev

et al. 2023

LRaWM

View full text Add to dashboard Cite

The practice of EU countries on the establishment of water tariffs for irrigation of agricultural crops and the procedures for recouping funds spent on water supply for irrigation is considered. As the main sources of information for the manuscript were noted publications and regulatory documents of Ukraine, reports of EU bodies, and the World Bank, in which a critical analysis of pricing practices in irrigated agriculture in EU countries for 2005-2023 was carried out. The grouping of information on the area of irrigated land, the level of return of funds spent on water supply, and attention is paid to a methodical approach to the development of tariffs for water transportation. The interpretation of the reasons for the natural character, which were guided by state management bodies when applying economic tools for irrigation management in their territories, are presented. For certain countries with big areas of irrigated land (Italy, France, Greece, Spain, Portugal, and Romania), significant achievements of tariff formation and reimbursement of funds have been determined. Aspects of water tariff formation, water accounting, development of water user associations, and taxation of water fees are disclosed. countries were classified according to water pricing, taking into account the state of water resources and melioration systems, types of tariffs, pricing mechanisms, the state of return of funds spent on water supply due to tariffs, measurement of water volumes, as well as solving additional problems of applying economic tools in irrigated agriculture – institutional (administrative, legal) measures, the impact of water charges on the country’s agricultural economy, etc. Since the requirements of the Water Framework Directive (WFD) are the dominant approach in the implementation of tariff formation in irrigation in EU countries, the level of achievement of indicators of the quality of WFD implementation by countries was considered. It has been established that the vast majority of global practices for forming tariffs for water supply services for irrigation, capital investments in reclamation infrastructure, and its maintenance, show that they are based both on national interests and on the interest of water users and organizations that provide logistical support.

show abstract

Algorithms to Optimise Cropping Diversity with Cover Crops

Cited by 2 publications

References 0 publications

Journal of Water and Land Development

Journal of Water and Land Development

Analysis of Methodical Approaches to the Formation of Water Tariffs for Irrigation and Compensation of Costs for Reclamation Infrastructure: The Experience of Eu Countries

Contact Info

Product

Resources

About