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Letteratura scientifica selezionata sul tema "Nitrogen fertilizers Arid regions"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 18 febbraio 2022

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Articoli di riviste sul tema "Nitrogen fertilizers Arid regions"

Milyutkin, Vladimir Alexandrovich, Nikolay Grigorievich Dluzhevsky, Oleg Nikolaevich Dluzhevsky, and Galina Viktorovna Levchenko. "Technical and technological improvement of sunflower cultivation in the dry regions of the Volga federal district." Agrarian Scientific Journal, no. 3 (March 29, 2021): 73–77. http://dx.doi.org/10.28983/asj.y2021i3pp73-77.

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The article presents the results of studies of the effectiveness of liquid mineral nitrogen and nitrogen-sulfur-containing fertilizers based on urea-ammonia mixture-UAN in comparison with solid-ammonium nitrate when growing sunflower in arid, typical for the zone of "risky farming" - the Volga region, years (2018-2020) with the use of modern high-performance equipment manufactured in Russia (Samara) at JSC "Eurotechnika" of the German company AMAZONEN-Werke. Conducted three-year studies on typical chernozems of the Samara region on the experimental fields of the Samara State Agrarian Universit

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Yang, Wenzhu, Yuehu Kang, Zhiwen Feng, Peng Gu, Huiyang Wen, Lijia Liu, and Yongqin Jia. "Sprinkler Irrigation Is Effective in Reducing Nitrous Oxide Emissions from a Potato Field in an Arid Region: A Two-Year Field Experiment." Atmosphere 10, no. 5 (May 1, 2019): 242. http://dx.doi.org/10.3390/atmos10050242.

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In arid and semi-arid regions, water-saving irrigation is the primary mode of local agricultural production. Since the chemical fertilizer is the principal source of nitrous oxide (N2O) emissions, we present results from a two-year (2016–2017) field experiment on a potato field to verify the general influence of water-saving irrigation on N2O emissions. A split-plot experiment was established with two irrigation systems and two fertilizer treatments, which give a total of four treatments. Two different irrigation systems were investigated: (i) flood irrigation with nitrogen fertilizer (NF-FI)

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Zahran, Hamdi Hussein. "Rhizobium-Legume Symbiosis and Nitrogen Fixation under Severe Conditions and in an Arid Climate." Microbiology and Molecular Biology Reviews 63, no. 4 (December 1, 1999): 968–89. http://dx.doi.org/10.1128/mmbr.63.4.968-989.1999.

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SUMMARY Biological N2 fixation represents the major source of N input in agricultural soils including those in arid regions. The major N2-fixing systems are the symbiotic systems, which can play a significant role in improving the fertility and productivity of low-N soils. The Rhizobium-legume symbioses have received most attention and have been examined extensively. The behavior of some N2-fixing systems under severe environmental conditions such as salt stress, drought stress, acidity, alkalinity, nutrient deficiency, fertilizers, heavy metals, and pesticides is reviewed. These major stress

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Wen, Yue, Zhenhua Wang, Li Guo, and Wenhao Li. "Establishing a Physiology-Yield-Quality Evaluation Model for Optimizing Drip Irrigation on Grape Fields in Extremely Arid Regions." Applied Engineering in Agriculture 37, no. 2 (2021): 267–78. http://dx.doi.org/10.13031/aea.14296.

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HighlightsRegulated deficit irrigation and fertilization ratio were used to test grapes in extremely arid areas.Physiology, yield, and quality indexes of drip irrigation grapes were analyzed accordingly in this study.Single and comprehensive evaluation models were used to evaluate the optimal water and fertilizer treatment.Abstract. Water shortage and chemical fertilizer abuse are important factors restricting grape industry development in Xinjiang. In this study, the physiology, yield and quality indexes of drip irrigation grapes were analyzed, and the water-fertilizer system was properly opt

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Rehim, Abdur, Maryam Khan, Muhammad Imran, Muhammad Amjad Bashir, Sami Ul-Allah, Muhammad Naeem Khan, and Mubshar Hussain. "Integrated use of farm manure and synthetic nitrogen fertilizer improves nitrogen use efficiency, yield and grain quality in wheat." Italian Journal of Agronomy 15, no. 1 (March 2, 2020): 29–34. http://dx.doi.org/10.4081/ija.2020.1360.

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Lower nitrogen use efficiency (NUE) is a major yield limiting factor in semi-arid regions due to poor organic contents of the soils. There is a close relationship between soil organic matter and NUE of fertilizers. Therefore, this study was conducted to assess the effect of sole N fertilizer and its combinations with organic amendments (farm manure combinations) on N use efficiency and crop productivity. For this purpose, a two-year field study was conducted to access the influence of integrated use of synthetic N fertilizer (urea) and farm manure on N use efficiency and wheat productivity. Tr

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Vázquez, Rosa A., Luis Manuel Lozano Cota, Lamberto Castro Arce, Ramona Icedo García, Beatriz E. Arias-T,, and Edgar Omar Rueda-Puente. "Propiedades Fisicoquímicas De Suelos Cultivados Con Asparagus Officinalis En La Región Árida Del Noroeste De México." European Scientific Journal, ESJ 12, no. 30 (October 31, 2016): 23. http://dx.doi.org/10.19044/esj.2016.v12n30p23.

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In the agriculture of arid zones, the inadequate soil management has generated changes in their quality and sustainability, affecting the structure and physicochemical conditions which reduce crop yields; based on the above, is consider as a vital importance the analyses of soil and plants because they provide information, current and accurate, which can be useful to take decisions in relation to soil fertility and plant nutrition. The inappropriate handling and amount of fertilizers in asparagus in the arid region of the Northwest of Mexico, has caused low yields. The aim of this study consis

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Mekdad, A. A. A., and A. M. A. El-Sherif. "The Effect of Nitrogen and Potassium Fertilizers on Yield and Quality of Sweet Sorghum Varieties under Arid Regions Conditions." International Journal of Current Microbiology and Applied Sciences 5, no. 11 (November 10, 2016): 811–23. http://dx.doi.org/10.20546/ijcmas.2016.511.092.

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Heydari, Mohammad, Faridah Othman, Meysam Salarijazi, Iman Ahmadianfar, and Mohammad Sadeghian. "Predicting the Amount of Fertilizers using Linear Programming for Agricultural Products from Optimum Cropping Pattern." Journal of Geographical Studies 2, no. 1 (December 15, 2018): 22–29. http://dx.doi.org/10.21523/gcj5.18020103.

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The most crucial problem in resolving the challenges of water operations is usually maintaining the equilibrium between supply and demand for water especially in arid and semi-arid regions like most parts of Iran. In this research, to achieve the optimal cropping pattern, firstly, the study area was classified into six classes and just 2100 hectares of farming area in the top class that had the best agricultural conditions were analyzed. The water assigned to the described land was about 6 MCM [million cubic meters]. Seventeen essential farming product of the area were used for this modeling.

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JANZEN, H. H., C. W. LINDWALL, and C. J. ROPPEL. "RELATIVE EFFICIENCY OF POINT-INJECTION AND SURFACE APPLICATIONS FOR N FERTILIZATION OF WINTER WHEAT." Canadian Journal of Soil Science 70, no. 2 (May 1, 1990): 189–201. http://dx.doi.org/10.4141/cjss90-021.

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Conventional methods of N application for winter wheat often exhibit low fertilizer use efficiency. The comparative effectiveness of a new method, point-injection of N solution, was evaluated in two similar microplot field experiments established in southern Alberta. The first experiment, conducted over three site-year combinations in 1985 and 1986, compared yield response and fertilizer uptake in four spring-applied fertilizer treatments: broadcast urea-ammonium nitrate (UAN), broadcast urea, broadcast ammonium nitrate, and point-injected UAN, all applied in solution form. The second experime

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Shamudzarira, Z., and M. J. Robertson. "SIMULATING RESPONSE OF MAIZE TO NITROGEN FERTILIZER IN SEMI-ARID ZIMBABWE." Experimental Agriculture 38, no. 1 (January 2002): 79–96. http://dx.doi.org/10.1017/s0014479702000170.

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Data from a long-term trial on rates of fertilizer nitrogen (N) application to maize (Zea mays) were used to validate a cropping systems simulation model (APSIM) and then to apply the model to explore the risk associated with N fertilizer use by smallholder farmers and management strategies to minimize that risk. On average, maize growth and development in response to N was simulated with a degree of accuracy that justified its use in analysis of risk associated with N use in these semi-arid regions of Zimbabwe. APSIM was then configured to simulate the response to N over a 46-year climate rec

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Più fonti

Tesi sul tema "Nitrogen fertilizers Arid regions"

Georgis, Kidane. "The effect of fertiliser management practices on soil organic matter production in the semi-arid areas : a field and modelling approach." Title page, contents and abstract only, 1997. http://web4.library.adelaide.edu.au/theses/09AFP/09afpg352.pdf.

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Bibliography: leaves 155-169. Studies the effect of nitrogen fertilizer on dry matter production under differing watering regimes. Investigates the accuracy of different crop and soil organic matter models for predicting crop yield, nitrogen uptake and changes in soil organic carbon and nitrogen. Compares the models with data from long-term field experiments on wheat in Australia and sorghum in Ethiopia. Finds that a higher crop yield and better nitrogen and water utilisation can be achieved if addition of nitrogen fertilizer is balanced with soil water.

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Kraaij, Tineke. "Effects of rain, nitrogen, fire and grazing on bush encroachment in semi-arid savanna, South Africa." Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/52817.

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Thesis (MScFor)--Stellenbosch University, 2002.<br>ENGLISH ABSTRACT: Increases in woody plant density ('bush encroachment') reduce livestock production and biodiversity. By convention, soil moisture, soil nutrients, fire and herbivory are regarded as the principal factors governing the tree-grass ratio of savannas. An experiment with a completely-crossed design was employed to investigate woody seedling (Acacia me/lifera) recruitment near Kimberley, Northern Cape, South Africa, after fire and under conditions of maximum-recorded rainfall, nitrogen addition and grazing. The field experiment

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"Seasonality and Ecosystem Response in Prehistoric Agricultural Regions of Central Arizona." Master's thesis, 2011. http://hdl.handle.net/2286/R.I.8859.

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abstract: This thesis explores the independent effects of the manipulation of rocks into alignments, prehistoric farming, and season on soil properties in two areas with a history of prehistoric agriculture in central Arizona, Pueblo la Plata within the Agua Fria National Monument (AFNM), and an archaeological site north of the Phoenix basin along Cave Creek (CC). Soil properties, annual herbaceous biomass and the physical properties of alignments and surface soils were measured and compared across the landscape, specifically on: 1) agricultural rock alignments that were near the archaeologica

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Libri sul tema "Nitrogen fertilizers Arid regions"

Sharma, K. L. Nitrogen use in agriculture in arid and semiarid regions-- Indian perspective. Edited by Society for Conservation of Nature (New Delhi, India). Indian Nitrogen Group and International Nitrogen Initiative. South Asian Nitrogen Centre. New Delhi: Published by Indian Nitrogen Group, Society for Conservation of Nature in association with South Asian Nitrogen Centre, International Nitrogen Initiative, 2010.

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Roy, Amit H. The rebuilding of Afghanistan's agriculture: The IFDC solution. Muscle Shoals, Ala: IFDC, 2003.

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Guan, Guilan. Xinjiang gan han di qu gu dan sheng wu zi yuan =: Resources of the nitrogen-fixing organisms in Xinjiang arid area. Xin hua shu dian Beijing fa xing suo fa xing, 1991.

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International Crops Research Institute for the Semi-arid Tropics (Corporate Author) and C. Bruce Christianson (Editor), eds. Soil Fertility and Fertilizer Management in Semiarid Tropical India: Proceedings of a Colloquium, Held at Icrisat Center, Patancheru, India, October (Special publication IFDC). Intl Fertilizer Development, 1989.

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1951-, Christianson C. Bruce, International Fertilizer Development Center, and International Crops Research Institute for the Semi-arid Tropics., eds. Soil fertility and fertilizer management in semiarid tropical India: Proceedings of a colloquium, held at ICRISAT Center, Patancheru, India, October 10-11, 1988. Muscle Shoals, Ala: International Fertilizer Development Center, 1989.

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Risk management for maize farmers in drought prone areas of Southern Africa: Proceedings of a Workshop held at Kadoma Ranch, Zimbabwe, 1-3 October 1997. International Maize and Wheat Improvement Center, 1999.

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Capitoli di libri sul tema "Nitrogen fertilizers Arid regions"

Acikgoz, Esvet. "Annual Forage Legumes in the Arid and Semi-Arid Regions of Turkey." In Nitrogen Fixation by Legumes in Mediterranean Agriculture, 47–54. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-1387-5_6.

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Palm, Harry W., Ulrich Knaus, Samuel Appelbaum, Sebastian M. Strauch, and Benz Kotzen. "Coupled Aquaponics Systems." In Aquaponics Food Production Systems, 163–99. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-15943-6_7.

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AbstractCoupled aquaponics is the archetype form of aquaponics. The technical complexity increases with the scale of production and required water treatment, e.g. filtration, UV light for microbial control, automatic controlled feeding, computerization and biosecurity. Upscaling is realized through multiunit systems that allow staggered fish production, parallel cultivation of different plants and application of several hydroponic subsystems. The main task of coupled aquaponics is the purification of aquaculture process water through integration of plants which add economic benefits when selecting suitable species like herbs, medicinal plants or ornamentals. Thus, coupled aquaponics with closed water recirculation systems has a particular role to fulfil.Under fully closed recirculation of nutrient enriched water, the symbiotic community of fish, plants and bacteria can result in higher yields compared with stand-alone fish production and/or plant cultivation. Fish and plant choices are highly diverse and only limited by water quality parameters, strongly influenced by fish feed, the plant cultivation area and component ratios that are often not ideal. Carps, tilapia and catfish are most commonly used, though more sensitive fish species and crayfish have been applied. Polyponics and additional fertilizers are methods to improve plant quality in the case of growth deficiencies, boosting plant production and increasing total yield.The main advantages of coupled aquaponics are in the most efficient use of resources such as feed for nutrient input, phosphorous, water and energy as well as in an increase of fish welfare. The multivariate system design approach allows coupled aquaponics to be installed in all geographic regions, from the high latitudes to arid and desert regions, with specific adaptation to the local environmental conditions. This chapter provides an overview of the historical development, general system design, upscaling, saline and brackish water systems, fish and plant choices as well as management issues of coupled aquaponics especially in Europe.

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Mitchell, Katherine A., and Jeffrey E. Herrick. "Patterns and Controls of Soil Water in the Jornada Basin." In Structure and Function of a Chihuahuan Desert Ecosystem. Oxford University Press, 2006. http://dx.doi.org/10.1093/oso/9780195117769.003.0009.

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This chapter focuses on controls and patterns of soil moisture in the Jornada Basin. First we describe general properties that commonly contribute to soil water heterogeneity; second, we offer a brief overview of soil water research in the Jornada Basin; and last, we describe specific patterns of soil water content and availability observed in the Jornada Basin. Our goal is to describe general patterns of soil water that are likely to occur across the Chihuahuan Desert region. In arid and semiarid regions, water is typically thought to be the most limiting resource to biological activity (Noy-Meir 1973), though colimitation by water and nitrogen may be a more general rule (Hooper and Johnson 1999; see also chapter 6). The availability of water affects plant productivity, microbial activity, activity of biological soil crusts, nutrient cycling, and organic matter decomposition. It also directly and indirectly affects soil erosion, chemical weathering, and carbonate formation. There are several hypotheses addressing how water availability affects plant productivity in desert environments. Beatley (1974) proposed that various functional types (e.g., shrub, perennial grass, annual forb) have different seasonal rainfall thresholds to trigger phenological responses. The annual productivity of functional types is therefore determined by the timing and amount of rainfall. Westoby (Noy-Meir 1973) proposed the pulse-reserve paradigm to explain population dynamics of desert plants. In this view, a rain event triggers a pulse of production. Some of that production is used to generate new tissue, but part of the production is diverted into reserves. The amount of reserves in part determines the next production pulse, as well as the minimum size of the next trigger event. Rainfall is highly variable both spatially and temporally in arid regions; therefore, understanding patterns of rainfall and interactions between rainfall patterns, soil characteristics, temperature, and topography are critical to predicting ecosystem responses. The relationship between average annual precipitation and plant productivity across arid regions has substantial predictive ability (Le Houérou 1984). However, for a given site, the relationship between annual precipitation and yearly plant productivity has limited explanatory power (Lauenroth and Sala 1992).

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Sposito, Garrison. "Soil Acidity." In The Chemistry of Soils. Oxford University Press, 2016. http://dx.doi.org/10.1093/oso/9780190630881.003.0015.

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A soil is acidic if the pH value of the soil solution is less than 7.0. This condition is met in many soils where rainfall exceeds evapotranspiration, including Alfisols, Histosols, Inceptisols, Oxisols, Spodosols, and Ultisols—almost half of the ice-free land area worldwide. Soils of the humid tropics offer examples of acidic soils (Ultisols and Oxisols), as do soils of forested regions in the temperate zones of Earth (Alfisols, Histosols, Inceptisols, and Spodosols). Soils in peat-producing wetlands and those influenced strongly by oxidation reactions, such as rice-producing uplands, can be mentioned as examples in which the biota play a direct role in acidification. The phenomena that produce a given proton concentration in the soil solution to render it acidic are complex and interrelated. Those pertaining to sources and sinks for protons are shown in Fig. 11.1, which is a special case of Fig. 1.4 with “free cation or anion” in the center of the latter figure now interpreted as H+. In addition to the biogeochemical determinants of soil acidity, the field-scale transport processes wetfall (rain, snow, throughfall), dryfall (deposited solid particles), and interflow (lateral movement of soil water beneath the land surface down hill slopes) carry protons into a soil solution from external sources. Their existence and that of proton-exporting processes, such as volatilization and erosion, underscore the fact that the soil solution is an open natural water system subject to anthropogenic inputs that may dominate the development of soil acidity. Industrial effluents, such as sulfur and nitrogen oxide gases or mining waste waters, that produce acidic deposition or infiltration, and nitrog-enous fertilizers, the transformation and transport of which produce acidic soil conditions, are examples of anthropogenic inputs. Despite all this complexity, proton cycling in acidic soils at field scales has been quantified well enough to allow some general conclusions to be drawn. Acidic deposition, production of CO2(g) and humus, plus proton biocycling, all serve to increase soil solution acidity, whereas proton adsorption and mineral weathering serve to decrease it.

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Atti di convegni sul tema "Nitrogen fertilizers Arid regions"

Rasheed, Rihab, Touria Bounnit, Hareb Al Jabri, and Imen Saadaoui. "Algae-based Biofertilizer for Date Palm Cultivation in Qatar." In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2020. http://dx.doi.org/10.29117/quarfe.2020.0034.

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Date palm (Phoenix dactylifera L.) is the main fruit crop found in the arid and semi-arid regions of the world. It naturally adapts to the adverse environments of extreme heat and water scarcity and prevents further desertification in addition to producing fruits with high nutritional value. It is seen in many parts of the world that traditional cultivation practices such as mixed planting and chemical fertilizers have led to low fruit quality resulting in low market values. Long generation time also hinders production of the dates. Tissue culture is therefore considered the most promising sol

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Al-Ghobari, H. M. "The impact of excessive irrigation water and fertilizers on the environment and groundwater quality in arid regions." In ENVIRONMENTAL IMPACT 2012. Southampton, UK: WIT Press, 2012. http://dx.doi.org/10.2495/eid120281.

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KOZLOVA, Natalia, Aleksandr BRIUKHANOV, Eduard VASILEV, and Ekaterina SHALAVINA. "ENVIRONMENTAL ASSESSMENT OF LIVESTOCK FARMS IN RUSSIA." In RURAL DEVELOPMENT. Aleksandras Stulginskis University, 2018. http://dx.doi.org/10.15544/rd.2017.189.

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The paper focuses on quantitative assessment of nitrogen flows in a livestock farm under transition to best available techniques BAT system in Russia. Comparative analysis of quantitative estimates of ammonia emissions from housing for dairy cows, fattening pigs, farrowing sows and laying hens was conducted using available literature data and information obtained through a survey of pilot livestock farms in Leningrad Region. Ammonia emission data for existing Russian enterprises were found in the range of BREF emission levels associated with BAT. The nitrogen farm-gate balance was calculated f

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