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Articoli di riviste sul tema "Crop yield Arid regions Computer simulation"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 8 febbraio 2022

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1

Li, Jiang, Xiyun Jiao, Hongzhe Jiang, Jian Song, and Lina Chen. "Optimization of Irrigation Scheduling for Maize in an Arid Oasis Based on Simulation–Optimization Model." Agronomy 10, no. 7 (June 29, 2020): 935. http://dx.doi.org/10.3390/agronomy10070935.

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Abstract (sommario):

In arid regions, irrigation scheduling optimization is efficient in coping with the shortage of agricultural water resources. This paper developed a simulation–optimization model for irrigation scheduling optimization for the main crop in an arid oasis, aiming to maximize crop yield and minimize crop water consumption. The model integrated the soil water balance simulation model and the optimization model for crop irrigation scheduling. The simulation model was firstly calibrated and validated based on field experiment data for maize in 2012 and 2013, respectively. Then, considering the distri

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2

Lopez, Gina, Thomas Gaiser, Frank Ewert, and Amit Srivastava. "Effects of Recent Climate Change on Maize Yield in Southwest Ecuador." Atmosphere 12, no. 3 (February 25, 2021): 299. http://dx.doi.org/10.3390/atmos12030299.

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In recent years, evidence of recent climate change has been identified in South America, affecting agricultural production negatively. In response to this, our study employs a crop modelling approach to estimate the effects of recent climate change on maize yield in four provinces of Ecuador. One of them belongs to a semi-arid area. The trend analysis of maximum temperature, minimum temperature, precipitation, wind speed, and solar radiation was done for 36 years (from 1984 to 2019) using the Mann–Kendall test. Furthermore, we simulated (using the LINTUL5 model) the counterfactual maize yield

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3

Unami, Koichi, Osama Mohawesh, and Masayuki Fujihara. "Prototype and model of solar driven desalination plant in arid environment." Thermal Science 24, no. 2 Part A (2020): 903–14. http://dx.doi.org/10.2298/tsci180604097u.

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Water shortage and salinity are crucial factors affecting plant growth in arid and semi-arid regions, where irrigation water shortage and capillary rise from shallow saline water tables are often encountered. The objectives of this study are to construct a prototype of solar driven desalination plant in an arid area of Jordan Rift Valley, to develop a mathematical model predicting thermal dynamics in the prototype, to calibrate model parameters with measured physical parameters, and to discuss the performance of the prototype as well as its applicability to other areas under different environm

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4

Littleboy, M., AL Cogle, GD Smith, KPC Rao, and DF Yule. "Soil management and production of alfisols in the semi-arid tropics. IV.* Simulation of decline in productivity caused by soil erosion." Soil Research 34, no. 1 (1996): 127. http://dx.doi.org/10.1071/sr9960127.

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Maintenance of a productive soil base by minimizing soil erosion is vital to long-term crop production. In this study, a modelling approach is used to estimate the effects of soil erosion on productivity for a sorghum cropping system on an Alfisol in the semi-arid tropics of India. Predictions of erosion, runoff and yield decline due to erosion, for variations in initial soil depth, slope, tillage strategy and amendment treatment, are presented. On average, soil depth decreased by 0.91 cm/year at Hyderabad for a 10% slope, 80 cm initial soil depth, shallow tillage at planting and no surface am

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5

Ai, Pengrui, and Yingjie Ma. "Estimation of Evapotranspiration of a Jujube/Cotton Intercropping System in an Arid Area Based on the Dual Crop Coefficient Method." Agriculture 10, no. 3 (March 6, 2020): 65. http://dx.doi.org/10.3390/agriculture10030065.

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An accurate estimation of crop evapotranspiration (ETc) in intercropping is critical for a theoretical basis for formulating an intercropping irrigation system of fruit trees and improving the soil moisture condition of orchards in arid regions of Southern Xinjiang. Herein, observational data such as soil moisture and plant physiological indicators were measured in jujube/cotton intercropping in the Aksu region from 2015 to 2017. The evapotranspiration of single-crop jujube and cotton was estimated using the modified dual crop coefficient method. Then, based on the proportion of intercropping

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6

Pathak, Rakesh, Sunil Kumar Singh, Alkesh Tak, and Praveen Gehlot. "Impact of Climate Change on Host, Pathogen and Plant Disease Adaptation Regime: A Review." Biosciences, Biotechnology Research Asia 15, no. 3 (September 25, 2018): 529–40. http://dx.doi.org/10.13005/bbra/2658.

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An aberrant and harsh climate of arid and semi-arid regions of the world coupled with a continuous rise in temperature and CO2 concentration has adversely affected production and productivity of crops, livestock and fisheries in the region. Some of the minor pest species have acquired serious status due to fluctuating environmental conditions in the recent years revealing higher numbers of pest occurrences that may result up to 40% loss in agriculture yield by the year 2100 in South Asia including India. The global average temperatures are expected to arise around 1–2°C by the year 2100. Conse

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7

Bhatti, Muhammad Tousif, Muhammad Ashraf, and Arif A. Anwar. "Soil Erosion and Sediment Load Management Strategies for Sustainable Irrigation in Arid Regions." Sustainability 13, no. 6 (March 23, 2021): 3547. http://dx.doi.org/10.3390/su13063547.

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Soil erosion is a serious environmental issue in the Gomal River catchment shared by Pakistan and Afghanistan. The river segment between the Gomal Zam dam and a diversion barrage (~40 km) brings a huge load of sediments that negatively affects the downstream irrigation system, but the sediment sources have not been explored in detail in this sub-catchment. The analysis of flow and sediment data shows that the significant sediment yield is still contributing to the diversion barrage despite the Gomal Zam dam construction. However, the sediment share at the diversion barrage from the sub-catchme

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8

Arriagada, Osvin, Ilaria Marcotuli, Agata Gadaleta, and Andrés R. Schwember. "Molecular Mapping and Genomics of Grain Yield in Durum Wheat: A Review." International Journal of Molecular Sciences 21, no. 19 (September 24, 2020): 7021. http://dx.doi.org/10.3390/ijms21197021.

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Durum wheat is the most relevant cereal for the whole of Mediterranean agriculture, due to its intrinsic adaptation to dryland and semi-arid environments and to its strong historical cultivation tradition. It is not only relevant for the primary production sector, but also for the food industry chains associated with it. In Mediterranean environments, wheat is mostly grown under rainfed conditions and the crop is frequently exposed to environmental stresses, with high temperatures and water scarcity especially during the grain filling period. For these reasons, and due to recurrent disease epi

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9

MASON, STEPHEN C., NOURI MAMAN, and SIÉBOU PALÉ. "PEARL MILLET PRODUCTION PRACTICES IN SEMI-ARID WEST AFRICA: A REVIEW." Experimental Agriculture 51, no. 4 (February 11, 2015): 501–21. http://dx.doi.org/10.1017/s0014479714000441.

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SUMMARYPearl millet (Pennisetum glaucumL.) is an important grain crop for millions of poor farmers and consumers in the semi-arid region of West Africa. During the past 40 years, much research on pearl millet production practices and adoption in this region has been conducted, but an attempt to summarize these results has not been previously completed and these research results are not readily available to many West African scientists. This review was completed to address this need and integrate knowledge, and at the same time identify research needs for the future and extension priorities for

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10

Ruiz, Jorge, María Bielza, Alberto Garrido, and Ana Iglesias. "Dealing with drought in irrigated agriculture through insurance schemes: an application to an irrigation district in Southern Spain." Spanish Journal of Agricultural Research 13, no. 4 (December 2, 2015): e0106. http://dx.doi.org/10.5424/sjar/2015134-6941.

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<p class="Abstract">Hydrological drought is expected to have an increasing impact on both crop and fruit yields in arid and semi-arid regions. Some existing crop insurance schemes provide coverage against water deficits in rain-fed agriculture. The Prevented Planting Program in the USA covers against drought for irrigated agriculture. However, drought insurance for irrigated agriculture is still a challenge for companies and institutions because of the complexity of the design and implementation of this type of insurance. Few studies have attempted to evaluate the risk of loss due to irr

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11

Molto, J. Eldon, Joe D. Stewart, and Paula J. Reimer. "Problems in Radiocarbon Dating Human Remains from Arid Coastal Areas: An Example from the Cape Region of Baja California." American Antiquity 62, no. 3 (July 1997): 489–507. http://dx.doi.org/10.2307/282167.

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Three AMS radiocarbon dates on bone collagen from Las Palmas culture human skeletons from the cape region of Baja California are analyzed. Carbon derived from both terrestrial and marine sources necessitates correcting the radiocarbon ages for reservoir effects. Complicating this, however, are (a) the uncertain percentage of carbon of marine origin in the samples and (b) the convergence of the Pacific Ocean and the Gulf of California, which differ markedly in reservoir values. Computer program CALIB 3.0.3c is used to correct and calibrate the conventional radiocarbon dates in a simulation usin

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12

Shen, Hongzheng, Fangping Xu, Rongheng Zhao, Xuguang Xing, and Xiaoyi Ma. "Optimization of Sowing Date, Irrigation, and Nitrogen Management of Summer Maize Using the DSSAT-CERES-Maize Model in the Guanzhong Plain, China." Transactions of the ASABE 63, no. 4 (2020): 789–97. http://dx.doi.org/10.13031/trans.13654.

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HighlightsGood applicability of DSSAT was validated in simulating summer maize yield in the Guanzhong Plain, China.Optimal sowing dates of summer maize were obtained for different climatic years.The optimal irrigation and nitrogen management strategy conserved water and nitrogen. Abstract. Agricultural system models play an important role in simulating crop growth processes and water and fertilizer regulation in arid regions. To solve the current problems of optimizing the sowing date in different climatic years and the fertilizer application in low-precipitation conditions in the Guanzhong Pl

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13

Tararico, Yu O., R. V. Saidak, and Yu V. Soroka. "RESULTS AND PROSPECTS OF RESEARCH ON THE EVALUATION AND RATIONAL USE OF AGRO-RESOURCE POTENTIAL OF AGRICULTURAL AREAS." Міжвідомчий тематичний науковий збірник "Меліорація і водне господарство", no. 2 (December 12, 2019): 186–98. http://dx.doi.org/10.31073/mivg201902-194.

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Relevance of research. In order to ensure energy independence and food security of the state in the context of current climate change trends, the importance of reclaimed territories is increasing. By objectively assessing the agro-resource potential of individual regions and developing a strategy for its rational use, it is possible to significantly improve the productivity, stability, environmental balance and economic efficiency of agro-ecosystems. Objective of research. The objective of the research is to assess the water supply of the territory of Ukraine under changing climate and establi

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14

Nozari, Hamed, and Saeed Azadi. "System dynamics simulation of crop yield under different irrigation water quality and quantity." Water Practice and Technology, November 25, 2020. http://dx.doi.org/10.2166/wpt.2020.109.

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Abstract Agricultural products are one of the major sources of food for people in many countries. So, increasing crop yield is a major challenge for governments as increasing the population. On the other hand, agricultural improvement needs to take into consideration the type of land and water available. The decrease of water availability and soil salinity are two major limiting factors in sustainable agriculture in the arid and semiarid regions. In this study, the combined effect of salinity and water stress on crop yield was simulated by developing a computer model based on a system dynamics

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15

"Drainage Water Reuse under Water Scarcity." International Journal of Engineering and Advanced Technology 9, no. 3 (February 29, 2020): 1525–33. http://dx.doi.org/10.35940/ijeat.b4254.029320.

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Water resources management in arid regions and semi-arid such as Egypt is a continuous process for the achievement of rational use of the scarce water resources for the benefit of the national economy. Water scarcity in Egypt is a major challenge, which is annually increasing due to the high water demand of different sectors, while the share of Egypt from the Nile is fixed at 55.5 billion cubic meter (BCM). Non-conventional water resources, such as drainage water, are essential alternatives to improve the water use efficiency. In Nile Delta, a considerable number of reuse pump stations (RPSs)

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