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1

Andersson, Torsten N., and Per Milberg. "Weed flora and the relative importance of site, crop, crop rotation, and nitrogen." Weed Science 46, no. 1 (1998): 30–38. http://dx.doi.org/10.1017/s0043174500090135.

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Weed species composition and density were recorded in three identical field experiments established 26 to 30 yr ago in southern Sweden. Each experiment compared three 6-yr crop rotations and four rates of nitrogen application. The rotations differed by having (1) a 2-yr rotational grassland, (2) a 2-yr mixed rotational grassland (legume/grass), or (3) spring wheat followed by fallow. Other crops in the rotations were winter turnip rape, winter wheat, spring oats, and spring barley. Using multivariate analyses, the relative importance of site, crop, crop rotation, and nitrogen application rate
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2

Plaksina, V. S., and A. N. Astashov. "The effect of rotation length of crop rotations and weather conditions on the productivity of winter wheat." Siberian Herald of Agricultural Science 53, no. 5 (2023): 5–12. http://dx.doi.org/10.26898/0370-8799-2023-5-1.

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The results of the study of changes in winter wheat grain yield depending on the rotation length of crop rotations in the Lower Volga region are presented. As a result of 12 years of research (20082019) it was found that the maximum yield was obtained in four- and five-field crop rotations with the inclusion of leguminous crops - 2.73 and 2.79 t/ha, respectively. During the analysis of variance, different effects of growing conditions and rotation length on winter wheat yields were noted. The influence of vegetation conditions accounted for 98.6%. The effect of crop rotation was also significa
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3

Musser, Wesley N., Vickie J. Alexander, Bernard V. Tew, and Doyle A. Smittle. "A Mathematical Programming Model for Vegetable Rotations." Journal of Agricultural and Applied Economics 17, no. 1 (1985): 169–76. http://dx.doi.org/10.1017/s0081305200017180.

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AbstractRotations have historically been used to alleviate pest problems in crop production. This paper considers methods of modeling rotations in linear programming models for Southeastern vegetable production. In such models, entering each possible crop rotation as a separate activity can be burdensome because of the large numbers of possible rotational alternatives. Conventional methodology for double crop rotations reduces the number of activities but must be adapted to accommodate triple crop rotational requirements in vegetable production. This paper demonstrates these methods both for a
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4

Holod, R., О. Bilinska, and H. Shubala. "The efficiency of the crop rotations with short rotation with different levels of their saturation of cereals and crops in the conditions of Western Forest-Steppe." Interdepartmental thematic scientific collection "Agriculture" 1, no. 92 (2017): 62–68. http://dx.doi.org/10.31073/zem.92.62-68.

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There were analyzed and disclosed the basic components of arable farming systems and their Meaning, the current state and scientific principles in the context of the further development of field crop cultivation in the conditions of Western Forest-Steppe.
 The purpose of research. To study an effect of alternation of crop in crop rotation in conditions of brief rotation on the soil water regime, productivity and economic efficiency.
 Methods. Field, laboratory, comparative and analytical.
 Results. The results of researches on study of productivity of four-field crop rotations w
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5

Ghosh, Probir Kumar, Kali Krishna Hazra, Madasur Subbabhat Venkatesh, et al. "Grain legume inclusion in cereal–cereal rotation increased base crop productivity in the long run." Experimental Agriculture 56, no. 1 (2019): 142–58. http://dx.doi.org/10.1017/s0014479719000243.

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AbstractSustainability of cereal-based cropping systems remains crucial for food security in South Asia. However, productivity of cereal–cereal rotations has declined in the long run, demonstrating the need for a sustainable alternative. Base crop, that is, common crop in different crop rotations, productivity could be used as a sustainability indicator for the assessment of different long-term crop rotations. This study aimed to evaluate the impact of grain legume inclusion in lowland rice–wheat (R-W) and upland maize–wheat (M-W) rotation on system’s base crop (rice in lowland and wheat in up
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6

Higgs, Roger L., Arthur E. Peterson, and William H. Paulson. "Crop Rotations." Journal of Soil and Water Conservation 45, no. 1 (1990): 68–70. https://doi.org/10.1080/00224561.1990.12456432.

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7

KALİMOV, Niyazbek, Konstantin BODRYY, Evgeniya SHİLO, Damir KALDYBAEV, and Mariya BODRAYA. "Impact of tillage and crop rotations on soil organic matter content in Northern Kazakhstan's chernozem soils: A 10-year study (2011-2021)." EURASIAN JOURNAL OF SOIL SCIENCE (EJSS) 13, no. 1 (2023): 35–42. http://dx.doi.org/10.18393/ejss.1387017.

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This extensive 10-year study conducted in Northern Kazakhstan investigates the intricate relationship between soil management techniques, crop rotations, and soil organic matter (SOM) content in Chernozem soils, an essential agricultural resource in the region. The experiments were established at the Karabalyk Agricultural Experimental Station, characterized by a arid continental climate. The study systematically examined the impact of two primary soil management techniques, conventional tillage (CT) and no-tillage (NT), in combination with various crop rotations. The crop rotations tested inc
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Darguza, Madara, and Zinta Gaile. "The Productivity of Crop Rotation Depending on the Included Plants and Soil Tillage." Agriculture 13, no. 9 (2023): 1751. http://dx.doi.org/10.3390/agriculture13091751.

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Crop diversification in rotations is an important part of sustainable crop production. The aim of this research was to analyse soil tillage and crop rotation influence on the yield (t ha−1) of different field crops, their energy yield (GJ ha−1) and the economical profitability (EUR ha−1) of crop rotation. The field trial was conducted in Latvia during four harvest seasons (2017–2020) in a long-term experiment that started in 2009. Three crop rotations with a different share of winter wheat (Triticum aestivum) were studied: 100% wheat (repeated sowings), 67% wheat (three-year rotation with wint
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9

Lukyanov, V. A., and L. B. Nitchenko. "The effect of crop rotations and mineral fertilizers on economic and energy efficiency indicators when cultivating winter wheat in the Central Blackearth region." Grain Economy of Russia, no. 6 (December 20, 2023): 90–98. http://dx.doi.org/10.31367/2079-8725-2023-89-6-90-98.

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Economic efficiency is an integral method of analyzing agricultural technologies, especially against the rising prices for plant protection products, seeds, fertilizers, and fuels and lubricants. Identification and implementation of the most effective methods of field crops, growing using crop rotation and fertilizers remains an urgent task. The purpose of the current research was to study the effect of crop rotations and doses of mineral fertilizers on productivity of winter wheat grain, to analyze the economic and energy efficiency of its cultivation in the conditions of the Central Blackear
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10

Brooks, Steven A., Merle M. Anders, and Kathleen M. Yeater. "Influences from Long-Term Crop Rotation, Soil Tillage, and Fertility on the Severity of Rice Grain Smuts." Plant Disease 95, no. 8 (2011): 990–96. http://dx.doi.org/10.1094/pdis-09-10-0689.

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False smut (Ustilaginoidea virens) and kernel smut (Neovossia horrida) are diseases of rice (Oryza sativa) that reduce both grain yield and quality. Susceptible rice cultivars are in widespread use on production acreage in the United States, and the effects from crop management practices on smut control are poorly understood. We studied the long-term effects of crop rotation, soil tillage, and fertility level on rice smut severity. The highest levels of false smut observed in this study were on cultivars grown in rotation with soybean, on traditionally tilled soils, with high fertilizer treatm
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11

Makukh, Y. Р., Y. I. Tkalich, S. О. Remeniuk, M. V. Buzynnyi, S. М. Senchuk, and О. М. Atamanіuk. "Decrease in fertility of typical chernozem due to long-term anthropogenic pressure in grain-beet crop rotations." Agrology 7, no. 1 (2024): 27–33. http://dx.doi.org/10.32819/202404.

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The saturation of sugar beet rotations under different fertilizer application systems and long-term cultivation induces significant changes in soil properties, leading to decreases in humus content, mineral nitrogen, phosphorus, and potassium. The study was conducted in a stationary multifactorial experiment in grain-beet crop rotations: crop rotation, row-crop, and grain-row crop rotations with the application of 40 t/ha of manure under sugar beets + NPK 100:90:90 and a variant without fertilizers. The paper presents the results of monitoring changes in humus content during each rotation, red
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12

Peng, Huanhuan, Jinran Xiong, Jiayi Zhang, et al. "Water Requirements and Comprehensive Benefit Evaluation of Diversified Crop Rotations in the Huang-Huai Plain." Sustainability 15, no. 13 (2023): 10229. http://dx.doi.org/10.3390/su151310229.

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An intensified farming system can significantly increase crop productivity but can also cause major groundwater overdraft for irrigation and the loss of crop diversity. It is imperative to develop alternative crop rotations beyond the simplified conventional winter wheat–summer maize (W–M) rotation for alleviating the groundwater over-extraction in China’s Huang-Huai Plain. This study systematically quantified crop water requirement (ETc) and irrigation water requirement (ETaw) of eight crops from 2013 to 2018 based on the SIMETAW model applied to the Shangqiu area in the Huang-Huai Plain. Fou
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13

Jones, M. J., and M. Singh. "Yields of crop dry matter and nitrogen in long-term barley rotation trials at two sites in northern Syria." Journal of Agricultural Science 124, no. 3 (1995): 389–402. http://dx.doi.org/10.1017/s0021859600073354.

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SUMMARYTrials were established at two sites in 1982 to compare six 2-course rotations, in which barley alternated with feed legumes (pure or mixed with barley), fallow or barley, in partial factorial combination with different N and P fertilizer regimes. This paper summarizes data from the second to the seventh cropping seasons.Barley yielded most after fallow and more after legumes than after barley; but, on the basis of total dry matter production over both courses, barley-legume rotations outyielded barley-fallow and barley-barley rotations. In terms of net nitrogen offtake, which may be ta
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14

Demydenko, O. V. "Dynamics of crop yields depending on fertilizer, cultivation method and crop rotation type." Agriculture and plant sciences: theory and practice, no. 2 (February 8, 2024): 32–45. http://dx.doi.org/10.54651/agri.2024.02.05.

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To analyse the series of dynamics of winter wheat, peas, sugar beet, sunflower and soybeans under diffe­rent types of crop rotation, tillage and fertilization in a long-term stationary experiment. Methods. Statistical ana­lysis (non-parametric statistics, ARIMA method, singular spectral method) in the central part of the Left-Bank Forest-Steppe. Results. The yield of winter wheat in a crop rotation with peas under systematic ploughing was 4.67–5.15 t/ha, surface tillage interrupted by ploughing for sugar beet – 5.0–5.05 t/ha, with constant surface tillage for all crops in the crop rotation – 4
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15

Чибис, Валерий, Valeriy Chibis, Светлана Чибис, et al. "ECONOMIC EFFICIENCY OF FIELD CROP ROTATION IN OPTIMIZATION OF OF SOWING AREAS STRUCTURE." Vestnik of Kazan State Agrarian University 12, no. 4 (2018): 45–49. http://dx.doi.org/10.12737/article_5a5f05dc679404.30714646.

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In a long-term places, located on the experimental fields of Siberian Research Institute of Agriculture (Omsk), the schemes of field crop rotations were modernized by introducing oil crops (rapeseed, soybean) into rotation and replacing the repeated wheat crops with barley and oats. Accounting of grain crops productivity and accompanying observations were carried out in three field rotations of different lengths of rotation (four- and five-field) and on permanent sowing. The repetition of the experiments is fourfold. The system of agrotechnical measures recommended for the zone of the forest-s
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16

Maynard, Leigh J., Jayson K. Harper, and Lynn D. Hoffman. "Impact of Risk Preferences on Crop Rotation Choice." Agricultural and Resource Economics Review 26, no. 1 (1997): 106–14. http://dx.doi.org/10.1017/s1068280500000873.

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Stochastic dominance analysis of five crop rotations using twenty-one years of experimental yield data returned results consistent with Pennsylvania cropping practices. The analysis incorporated yield risk, output price risk, and rotational yield effects. A rotation of two years corn and three years alfalfa hay dominated for approximately risk neutral and risk averse preferences, as did participation in government programs under the 1990 Farm Bill. Crop rotation selection appeared to impact net revenues more than the decision to participate in government programs.
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17

Kaipov, Ya Z., Z. R. Sultangazin, and R. L. Akchurin. "The influence of biologized crop rotations on organic matter and agrophysical soil layers in the arid steppe of the Southern Urals." Agrarian science, no. 7 (July 27, 2023): 63–68. http://dx.doi.org/10.32634/0869-8155-2023-372-7-63-68.

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Relevance. The continuing deterioration of the state of agricultural lands and the natural environment in general requires a transition to conservation agriculture, of which biologized crop rotations are a part.The purpose of the research is to establish the influence of biologized crop rotations on the content of organic matter and agrophysical properties of the soil in the arid steppe of the Southern Urals.Methods. Field experiments and laboratory analyses were carried out according to generally accepted methods. The soil of the experimental field is ordinary medium loamy chernozem. The clim
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18

Gill, Kabal S. "Crop rotations compared with continuous canola and wheat for crop production and fertilizer use over 6 yr." Canadian Journal of Plant Science 98, no. 5 (2018): 1139–49. http://dx.doi.org/10.1139/cjps-2017-0292.

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Local economic, logistic, soil, and weather conditions have made appropriate rotations vary from one area to another. Seed yield and fertilizer use in rotations were compared with continuous cropping for 6 yr in the southeast Peace region of Alberta, Canada. Canola (C) (Brassica napus L.), wheat (W) (Triticum aestivum L.), pea (P) (Pisum sativum L.), barley (B) (Hordeum vulgare L.), and flax (F) (Linum usitatissimum L.) were grown in 12 treatments [i.e., continuous canola (CC) and wheat (WW) and rotations of W–C, P–W–W, C–W–W, C–C–W, P–C–W, C–P–W, W–B–C, B–W–C, F–W–C, and F–C–W]. Canola yield
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19

Larkin, Robert P. "Use of Crop Rotations, Cover Crops and Green Manures for Disease Suppression in Potato Cropping Systems." Global Journal of Agricultural Innovation, Research & Development 8 (November 15, 2021): 153–68. http://dx.doi.org/10.15377/2409-9813.2021.08.12.

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Crop rotations and the inclusion of cover crops and green manures are primary tools in the sustainable management of soil-borne diseases in crop production systems. Crop rotations can reduce soil-borne disease through three general mechanisms: (1) serving as a break in the host-pathogen cycle; (2) by altering the soil physical, chemical, or biological characteristics to stimulate microbial activity and diversity; or (3) directly inhibiting pathogens through the release of suppressive or toxic compounds or the enhancement of specific antagonists. Brassicas, sudangrass, and related plant types a
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Kaipov, Ya Z., and N. A. Chukbar. "Impact of biologized crop rotations on infestation of crops in arid steppe conditions of Trans-Ural region of Bashkortostan." Agrarian science, no. 5 (June 17, 2022): 67–72. http://dx.doi.org/10.32634/0869-8155-2022-359-5-67-72.

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Relevance. The influence of crop rotations on the infestation of crops has been little studied. А goal was to investigate the influence of biologized crop rotations on infestation of crops in the arid steppe of the Trans-Ural region of Bashkortostan.Methods. The relief of the experimental field is flat, represented by the foothill steppe of the Southern Urals. The soil is black soil, common medium-coal. The climate is arid, with periodically hot summer and moderately cold and little snow winter periods. During the years of experiments (2019–2021), the amount of precipitation for the vegetation
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Archer, David W., Mark A. Liebig, Donald L. Tanaka, and Krishna P. Pokharel. "Crop diversity effects on productivity and economics: a Northern Great Plains case study." Renewable Agriculture and Food Systems 35, no. 1 (2018): 69–76. http://dx.doi.org/10.1017/s1742170518000261.

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AbstractIncreasing crop diversity has been proposed to increase the sustainability of cropping systems. If producers are to adopt these systems, they should also be economically viable. In this study conducted near Mandan, North Dakota, four no-till cropping systems with varying levels of crop diversity were evaluated over a 12-yr period to quantify system effect on crop productivity, input use, production costs, and economic risks and returns. Cropping system treatments included a small grain–fallow rotation (SG–Fallow) and a continuous spring wheat (Triticum aestivumL.) rotation (Cont SW) as
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Ball, B. C., I. Bingham, R. M. Rees, C. A. Watson, and A. Litterick. "The role of crop rotations in determining soil structure and crop growth conditions." Canadian Journal of Soil Science 85, no. 5 (2005): 557–77. http://dx.doi.org/10.4141/s04-078.

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Increasing concern about the need to provide high-quality food with minimum environmental impact has led to a new interest in crop rotations as a tool to maintain sustainable crop production. We review the role of rotations in the development and preservation of soil structure. After first introducing the types of rotations in current practice and their impact on yield, we assess how soil and crop management in rotations determines soil structure, and in turn how soil structure influences crop growth and yield. We also briefly consider how soil structure might contribute to other beneficial ef
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23

Langemeier, Michael R., Xiaoyi Fang, and Michael O’Donnell. "Comparison of Long-Run Net Returns of Conventional and Organic Crop Rotations." Sustainability 12, no. 19 (2020): 7891. http://dx.doi.org/10.3390/su12197891.

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This study compares the long-run net returns to land of conventional corn/soybean and corn/soybean/wheat crop rotations to that of an organic corn/soybean/wheat crop rotation. The net returns to land for the organic crop rotation were found to be approximately $68 and $74 per acre higher than those of the conventional corn/soybean and conventional corn/soybean/wheat crop rotations, respectively. Average net return estimates are sensitive to price, yield, and cost assumptions. Organic crop prices would have to drop more than 17.8 percent and organic crop yields would have to drop more than 16.8
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Mashchenko, Yu V., I. M. Semeniaka, M. I. Cheriachukin, and O. M. Hryhoreva. "Effectiveness of short-term crop rotations under different fertilization systems in the insufficient moisture zone of the Right-Bank Steppe of Ukraine." Scientific Journal Grain Crops 6, no. 1 (2022): 169–76. http://dx.doi.org/10.31867/2523-4544/0220.

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Topicality. In the condition of insufficient moisture in the Right Bank Steppe of Ukraine, agriculture is associated with weather risks, non-compliance with the appropriate structure of sown areas and fertilization systems, which makes it difficult to obtain high and stable yields of agricultural crops. The development of agricultural systems is the basis for increasing both yield levels and the competitiveness of the agricultural industry as a whole. Aim. To study the influence of fertilization systems on the fertility of ordinary chernozems and crop productivity in biological short-term crop
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Yuan, Ming, Yingdong Bi, Dongwei Han, et al. "Long-Term Corn–Soybean Rotation and Soil Fertilization: Impacts on Yield and Agronomic Traits." Agronomy 12, no. 10 (2022): 2554. http://dx.doi.org/10.3390/agronomy12102554.

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Although crop rotations have been widely shown as an effective approach for improving yield or soil quality in the long term, the relationship between crop rotations and quality traits of crop or biochar-based fertilization is still unclear. To address this, we conducted a long-term field experiment in the Heilongjiang province of China to investigate the effects of crop rotation and biochar-based fertilizer application on the crop yield, soil parameters, crop quality, and agronomic traits in 2014–2020. The effects of rotations on crop production and soil properties were evaluated with the ave
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JANZEN, H. H., D. J. MAJOR, and C. W. LINDWALL. "COMPARISON OF CROP ROTATIONS FOR SORGHUM PRODUCTION IN SOUTHERN ALBERTA." Canadian Journal of Plant Science 67, no. 2 (1987): 385–93. http://dx.doi.org/10.4141/cjps87-056.

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Grain sorghum (Sorghum bicolor L. Moench.) was evaluated in six rotations under rainfed conditions at the Lethbridge Research Station from 1978 to 1984. The rotations included continuous sorghum, sorghum-fallow, sorghum-barley, sorghum-spring wheat-fallow, sorghum-fallow-spring wheat and sorghum-fallow-winter wheat. The highest total production was achieved with the sorghum-barley rotation. This was followed by the continuous sorghum and sorghum-fallow-winter wheat rotations. The 3-yr rotations were not significantly different from each other but the sorghum-fallow-winter wheat rotation appear
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Przednowek, D. W. A., M. H. Entz, B. Irvine, D. N. Flaten, and J. R. Thiessen Martens. "Rotational yield and apparent N benefits of grain legumes in southern Manitoba." Canadian Journal of Plant Science 84, no. 4 (2004): 1093–96. http://dx.doi.org/10.4141/p04-032.

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Knowledge of rotational N benefits of grain legumes can assist in crop rotation planning and N fertilizer management. Four annual grain legumes were tested in Manitoba field trials over 3 yr. Field pea provided the largest and most consistent apparent N benefit to a succeeding wheat crop; soybean provided relatively little N benefit. The apparent N benefits of chickpea and dry bean were inconsistent, although chickpea shows greater potential in dry conditions. Key words: Wheat rotations, N credit, crop rotation
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Kim, Woojin, Moon-Sub Lee, and Jwakyung Sung. "Rice Production and Nitrogen Use Efficiency by Diverse Forms of Fertilization in Rice-Based Crop Rotation Systems." Agronomy 14, no. 11 (2024): 2663. http://dx.doi.org/10.3390/agronomy14112663.

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The rising demand for climate change mitigation has brought attention to agricultural systems focused on carbon farming and reducing emissions. Composting food wastes and livestock manure not only mitigates environmental concerns but also boosts soil fertility and crop yields as an alternative fertilizer. In this experiment, we investigated the effects of different fertilizer types (chemical and organic waste compost) and crop rotations (rice–fallow, rice–Italian ryegrass, and rice–potato) on rice production, nitrogen use efficiency, and soil carbon stocks. In this experiment, soil carbon and
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Kegode, George O., Frank Forcella, and Sharon Clay. "Influence of crop rotation, tillage, and management inputs on weed seed production." Weed Science 47, no. 2 (1999): 175–83. http://dx.doi.org/10.1017/s0043174500091591.

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Approaches to crop production that successfully reduce weed seed production can benefit farming systems by reducing management inputs and costs. A 5-yr rotation study was conducted in order to determine the effects that interactions between crop rotation, tillage, and amount of herbicide and fertilizer (management inputs) have on annual grass and broad-leaved weed seed production and fecundity. There were 10 crop rotation and tillage system combinations and three levels of management inputs (high, medium, and low). Green and yellow foxtail were the major weed species, and together they yielded
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Kozlova, Zoya V., and Vlada V. Kolocheva. "Influence of forage crop rotations on crop yields and phytosanitary conditions of soils in the Baikal region." E3S Web of Conferences 296 (2021): 01004. http://dx.doi.org/10.1051/e3sconf/202129601004.

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The article considers the practical aspects of ensuring the preservation of natural ecosystems based on the use of organic farming technologies. It presents the results of research in the forest-steppe zone of the Baikal region for 2011-2018. On the basis of the phytosanitary state of crops studying analysis, it was found that the correct alternation of crops in crop rotation suppresses the level of weeds, thereby not affecting the productivity of agricultural crops. The paper reveals the characteristics of agrophysical and water properties of gray forest soil, the influence of forage crop rot
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Jin, Xue, Jian Wang, Dalong Li, Fengzhi Wu, and Xingang Zhou. "Rotations with Indian Mustard and Wild Rocket Suppressed Cucumber Fusarium Wilt Disease and Changed Rhizosphere Bacterial Communities." Microorganisms 7, no. 2 (2019): 57. http://dx.doi.org/10.3390/microorganisms7020057.

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Crop monocropping usually results in an enrichment of soil-borne pathogens in soil. Crop rotation is an environmentally friendly method for controlling soil-borne diseases. Plant rhizosphere microorganisms, especially plant-beneficial microorganisms, play a major role in protecting plants from pathogens, but responses of these microorganisms to crop rotation remain unclear. Here, we evaluated the effects of rotations with Indian mustard (Brassica juncea) and wild rocket (Diplotaxis tenuifolia (L.) DC.) on cucumber Fusarium wilt disease caused by Fusarium oxysporum f.sp. cucumerinum Owen (FOC).
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Nikitin, V. V., V. D. Solovichenko, and A. P. Karabutov. "THE EFFECT OF CROP ROTATION, TILLAGE TECHNIQUE AND FERTILIZERS ON BARLEY PRODUCTIVITY." Grain Economy of Russia, no. 4 (August 23, 2018): 3–6. http://dx.doi.org/10.31367/2079-8725-2018-58-4-3-6.

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According to the trial, started in 1987, the article presents research works made in 1994–2013 dealing with the study of barley productivity during second-fifth rotations of grain-grass row crop rotation and grain row crop rotation grown in blackearth (chernozem) with various tillage technologies and fertilizing. During four rotations on average barley productivity was nearly similar in both crop rotations. According to the trial results, the productive process depends on 0.16% from the types of crop rotations, on 0.12% from tillage technologies, on 25.6% on organic fertilizers and 71.0% from
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33

Johnston, Russell, Vernon Shattuck, and John Seliga. "THE EFFECTS OF CROP ROTATIONS AND NITROGEN RATES ON PROCESSING TOMATO YIELDS." HortScience 27, no. 6 (1992): 622f—622. http://dx.doi.org/10.21273/hortsci.27.6.622f.

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The influence of various crop rotations on the marketable yield of processing tomatoes (Lvcopersicon esculentum) in southwestern Ontario was investigated. The study was conducted for three years using nine and eight crop rotations at Leamington and Dresden, respectively. Four rates of nitrogen, 0, 45, 90, and 135 kg/ha were applied to each rotation. The treatments were arranged in a split-plot experimental design. Tomato yields were generally higher at both locations for all rotations compared to continuously grown tomatoes (control). The highest yields were obtained when tomatoes were grown i
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Dehtiarova, Z. O. "INFLUENCE OF SHORT-TERM CROP ROTATIONS WITH DIFFERENT PROPORTIONS OF SUNFLOWER ON SOIL WATER REGIME." Міжвідомчий тематичний науковий збірник "Меліорація і водне господарство", no. 1 (July 2, 2023): 94–101. http://dx.doi.org/10.31073/mivg202301-349.

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The article analyses the features of water consumption of sunflowers in short-term crop rotations. Presents the results of the 2020‒2021 research carried out in the experimental field of Kharkiv National Agrarian University named after V. V. Dokuchaev, located in the area of the Left Bank Forest-Steppe of Ukraine. The soil cover of the experimental field is represented by typical chernozem heavy loam on loess-like loam. Soil moisture was determined by gravimetric technique. Sunflower water consumption was calculated using the water balance method. The sunflower yield was recorded manually. The
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Dehtiarova, Zinaida, Mykola Shevchenko, Yurii Dehtiarov, and Victor Budyonny. "The efficiency of short-term crop rotations with different sunflower saturation." Scientific horizons 27, no. 12 (2024): 47–55. https://doi.org/10.48077/scihor12.2024.47.

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The study aimed to determine short-term crop rotations’ economic and energy efficiency with varying sunflower saturation. The economic and energy efficiency of crop rotations saturated with sunflower under the conditions of the Left-Bank ForestSteppe region of Ukraine was calculated using technological maps and prices as of 2024. The study employed the following methods: bibliometric analysis – a review of other researchers’ findings on the economic and energy efficiency of sunflower cultivation; grouping – an assessment of the economic and energy effects of varying sunflower saturation in cro
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36

Azizov, Zakiulla Mtyullovich, Vladimir Viktorovich Arkhipov, and Ildar Garifullovich Imashev. "Efficiency of grain production in crop rotations of the dry steppe of the Lower Volga region." Agrarian Scientific Journal, no. 2 (February 18, 2021): 4–8. http://dx.doi.org/10.28983/asj.y2021i2pp4-8.

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The analysis of the influence of species and the fullness of crop rotations on the productivity and efficiency of grain crops is given. It was revealed that the highest grain yield is observed in a 4-field grain-fallow crop rotation. The absence of a field of late spring crops (millet) in 2- and 3-field crop rotations reduces grain yield in comparison with 4- and 7-field crops, both on average over 28 years (1991-2018), and in wet and middle years. The bioenergy coefficient, judging by the costs and grain yield, was highest in a 2-field grain-fallow crop rotation (4.94), then in a 4-field rota
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37

Dyck, Miles F., and Dick Puurveen. "Long-term rotation impacts soil total macronutrient levels and wheat response to applied nitrogen, phosphorus, potassium, sulfur in a Luvisolic soil." Canadian Journal of Soil Science 100, no. 4 (2020): 430–39. http://dx.doi.org/10.1139/cjss-2019-0155.

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Over the last 20–30 yr, increased intensification and diversity of crop rotations, along with increasingly higher yielding crop cultivars on the Northern Great Plains, has increased nutrient removal from cropping systems, but also increased crop residues returned to the soil, affecting soil nutrient cycling, soil carbon (C) and nutrient balances. The University of Alberta Breton Classical Plots, established in 1929, consist of two crop rotations of varying diversity and intensity: (1) wheat–fallow (WF); and (2) 5 yr, cereal–forage. Superimposed on these rotations are eight fertility treatments
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38

Laamrani, Ahmed, Paul R. Voroney, Aaron A. Berg, et al. "Temporal Change of Soil Carbon on a Long-Term Experimental Site with Variable Crop Rotations and Tillage Systems." Agronomy 10, no. 6 (2020): 840. http://dx.doi.org/10.3390/agronomy10060840.

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The impacts of tillage practices and crop rotations are fundamental factors influencing changes in the soil carbon, and thus the sustainability of agricultural systems. The objective of this study was to compare soil carbon status and temporal changes in topsoil from different 4 year rotations and tillage treatments (i.e., no-till and conventional tillage). Rotation systems were primarily corn and soy-based and included cereal and alfalfa phases along with red clover cover crops. In 2018, soil samples were collected from a silty-loam topsoil (0–15 cm) from the 36 year long-term experiment site
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39

Kozlova, Zoya, Lyubov' Matais, and Ol'ga Glushkova. "INFLUENCE OF FODDER CROP ROTATIONS ON CROP CONFERENCE AND PRODUCTIVITY OF AGRICULTURAL CROPS IN BAIKAL REGION." Vestnik of Kazan State Agrarian University 15, no. 2 (2020): 20–24. http://dx.doi.org/10.12737/2073-0462-2020-20-24.

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The research was carried out in Irkutsk region in 2011–2014. The purpose of this work is to study the influence of forage crop rotations on the degree of weediness of fields and the yield of forage crops. The objects of research are three forage crop rotations: one control without perennial legumes (meadow clover) and two with meadow clover in the structure of sown areas of 20 and 40%. The soil of the experimental site is gray forest heavy loamy, with the following characteristics: salt extract pH 4.7 ... 4.9, humus content 4.5 ... 4.8%, mobile phosphorus - 160 mg/kg, potassium - 130 mg/kg. Th
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Wortman, Sam E., John L. Lindquist, Milton J. Haar, and Charles A. Francis. "Increased weed diversity, density and above-ground biomass in long-term organic crop rotations." Renewable Agriculture and Food Systems 25, no. 4 (2010): 281–95. http://dx.doi.org/10.1017/s174217051000030x.

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AbstractWhile weed management is consistently a top priority among farmers, there is also growing concern for the conservation of biodiversity. Maintaining diverse weed communities below bioeconomic thresholds may provide ecosystem services for the crop and the surrounding ecosystem. This study was conducted to determine if weed diversity, density and biomass differ within and among organic and conventional crop rotations. In 2007 and 2008, we sampled weed communities in four long-term crop rotations near Mead, Nebraska using seedbank analyses (elutriation and greenhouse emergence) and above-g
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Shevchenko, M. S., L. M. Decyatnik, and K. A. Derevenets-Shevchenko. "Modern systems of agriculture and a new interpretation of crop rotation value of agricultural crops." Scientific Journal Grain Crops 4, no. 2 (2020): 319–29. http://dx.doi.org/10.31867/2523-4544/0141.

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Based on a broad experimental study of crop rotation productivity in different locations of the Steppe zone, a correlative model for estimating the role of predecessors in the formation of post-crop yields has been developed. The connection between quality of agrotechnologies and change of degree of crop rotation competitiveness of culture is presented. A retrospective analysis of the efficiency of farming and crop rotation systems showed that the constant improvement of varieties and hybrids of crops and technologies for their cultivation created objective agrobiological grounds for reassessm
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Ram, Basta, Ajeet Pratap Singh, Veer Singh, Navneet Pareek, and Poonam Gautam. "Long term effect of different crop rotations on soil physical properties in a Mollisol." Journal of Phytopharmacology 11, no. 1 (2022): 7–11. http://dx.doi.org/10.31254/phyto.2022.11102.

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The present study was conducted for the study about the effect of different rotations on physical properties in a Mollisol. The study area was located at Norman E. Borlaug Crop Research Centre, G. B. Pant University of Agriculture and Technology, Pantnagar, which lies at 290N latitude, 790 3’ E longitude and 243.84 m above the mean sea level altitude. The crop rotation selected for study were T1 (Rice- Wheat-Fallow) T2 (Rice- Vegetable pea- Summer Rice) T3 (Maize- Wheat- Cowpea) T4 (RiceWheat- Sesbania) T5 (Maize- Toria- Urd) T6 (Rice- Yellow Sarson- Grain Cowpea) T7 (Multi-Cut Sorghum- Barsee
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Leach, Megan, Paula Agudelo, and Amy Lawton-Rauh. "Effect of Crop Rotations on Rotylenchulus reniformis Population Structure." Plant Disease 96, no. 1 (2012): 24–29. http://dx.doi.org/10.1094/pdis-02-11-0131.

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Rotylenchulus reniformis is a highly variable nematode species and an economically important pest in many cotton fields across the south-eastern United States. Rotation with resistant or poor host crops is a method for management of reniform nematode. We studied the effect of six planting schemes covering four 120-day planting cycles on the predominant genotype of R. reniformis. Rotations used were: (i) cotton to corn; (ii) susceptible soybean to corn; (iii) resistant soybean to cotton; (iv) corn to cotton; (v) continuous susceptible soybean; (vi) continuous cotton. After each 120-day cycle, a
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Costa, Marcela Porto, David Chadwick, Sophie Saget, Robert M. Rees, Michael Williams, and David Styles. "Representing crop rotations in life cycle assessment: a review of legume LCA studies." International Journal of Life Cycle Assessment 25, no. 10 (2020): 1942–56. http://dx.doi.org/10.1007/s11367-020-01812-x.

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Abstract Purpose There is an imperative to accurately assess the environmental sustainability of crop system interventions in the context of food security and climate change. Previous studies have indicated that the incorporation of legumes into cereal rotations could reduce overall environmental burdens from cropping systems. However, most life cycle assessment (LCA) studies focus on individual crops and miss environmental consequences of inter-annual crop sequence and nutrient cycling effects. This review investigates state-of-the-art representation of inter-crop rotation effects within legu
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45

Tsymbal, Ya S., P. I. Boiko, I. V. Martyniuk, T. R. Kalchun, L. P. Yakymenko, and M. V. Bakumova. "Productivity of spring wheat in various crop rotations under organo-mineral fertilizer in the conditions of the Left Bank Forest-Steppe." Agriculture and plant sciences: theory and practice, no. 2 (February 24, 2023): 26–32. http://dx.doi.org/10.54651/agri.2023.02.03.

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Aim.The purpose of the research is to determine the influence of the structure, recruitment and placement of field crops in different crop rotations on the general productivity, yield and quality of spring wheat in particular. The study was carried out in the subzone of unstable moisture of the Left Bank Forest-Steppe of Ukraine on typical low-humus chernozem of the Panfil Research Station of the NSC «IA NAAS». Methods.The technology of growing agricultural crops in the experiment is generally accepted and recommended for the research area. Chemical plant protection agents were used for the pr
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46

Azizov, Zakiulla Mtyullovich, Vladimir Viktorovich Arkhipov, and Ildar Garifullovich Imashev. "The change in grain yield by rotation of crop rotations of the chernozem steppe of the Lower Volga region." Agrarian Scientific Journal, no. 6 (June 30, 2021): 4–8. http://dx.doi.org/10.28983/asj.y2021i6pp4-8.

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The influence of rotation length and fullness of grain – fallow crop rotations with a different set of biological groups (biogroupps) - winter, early spring and late spring crops on the yield of grain crops and grain yield from 1 hectare (ha) of arable land in the chernozem steppe of the Saratov Right Bank is analyzed, based on calculations for 4-field - 8 rotations, starting from 1989 and ending in 2020 (2-field - 16 rotations, 3-field - 10). It was revealed that the highest grain yield of 1.63 tons (t) from 1 ha of arable land, both on average for 32 years (1989-2020), and (1.82 t / ha) in t
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47

Khripunov, A. I., and E. N. Obshchiya. "Productivity of grain crop rotations in the landscape conditions of the Central Ciscaucasia." Agrarian science, no. 7-8 (September 24, 2021): 89–92. http://dx.doi.org/10.32634/0869-8155-2021-351-7-8-89-92.

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Increasing the yield of the most profitable field crops and their placement in crop rotations is an urgent problem of agriculture. The purpose of the studies is to study the productivity of grain crop rotations with various saturation of winter wheat on various power backgrounds and landscape taxons in the zone of unstable moisturizing of the Stavropol Territory. Productivity of grain crop rotations depends on the developing weather conditions, the introduction of mineral fertilizers, saturation of crop rotations with winter wheat and location in the relief. The maximum yield of grain units wa
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48

Gureev, I. I., A. V. Gostev, V. A. Lukiyanov, S. V. Khlyupina, and I. A. Prushchik. "Agroecological estimation of the effect of crop rotation and mineral fertilizers on productivity and quality of spring barley grain in the Central Blackearth region of Russia." Grain Economy of Russia, no. 5 (November 13, 2024): 78–87. http://dx.doi.org/10.31367/2079-8725-2024-94-5-78-87.

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The purpose of the current study was to determine the effect of crop rotations and doses of mineral fertilizers on productivity, grain quality of spring barley and fertility of typical chernozem in the Central Сhernozem Region (CBR). The study was conducted in a multifactorial trial located on the watershed plateau of the research and production department No. 2 of the Federal Agricultural Kursk Research Center in 2018 and 2022. The soil of the experimental plot was typical medium-loamy chernozem, with 5.9 % of humus. There have been studied such factors as grain-fallow-row and grain-grass-row
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49

Stevenson, F. Craig, and Adrian M. Johnston. "Annual broadleaf crop frequency and residual weed populations in Saskatchewan Parkland." Weed Science 47, no. 2 (1999): 208–14. http://dx.doi.org/10.1017/s0043174500091633.

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The development of problematic weed populations is a concern in western Canadian fields where canola and pea are grown in a 4-yr sequence with spring cereal grains. Weed densities were examined at a site near Melfort, Saskatchewan, Canada, from 1994 to 1997 in seven zero-till managed crop rotations. Four rotations that included canola, pea, or flax in at least 3 of 4 yr (HBF: high broadleaf–crop frequency) were compared with three rotations that included broadleaf crops grown in 2 of 4 yr (LBF: low broadleaf–crop frequency). Spring wheat and barley were the cereal crops in rotation. Residual (
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50

Mamiev, Dmitry Mairbekovich. "CROP ROTATIONS IN ADAPTIVE LANDSCAPE FARMING SYSTEMS." SCIENTIFIC LIFE 19, no. 4 (2024): 607–12. http://dx.doi.org/10.35679/1991-9476-2024-19-4-607-612.

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For new generation farming systems, crop rotations are developed taking into account the agronomically expedient placement of crops according to their predecessors, the timing of return to the field during rotation, the adaptability of crops to specific soil and climatic conditions, as well as the biological and man-made possibility of obtaining the greatest agronomic and economic effect. The aim of the research was to study various types of crop rotations in the foothills, which ensure an increase in soil fertility and crop yields. According to all the studied parameters, the advantage was th
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