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Sustainable agriculture

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https://www.readbyqxmd.com/read/28434155/nitrogen-fertility-and-abiotic-stresses-management-in-cotton-crop-a-review
#1
Aziz Khan, Daniel Kean Yuen Tan, Muhammad Zahir Afridi, Honghai Luo, Shahbaz Atta Tung, Mir Ajab, Shah Fahad
This review outlines nitrogen (N) responses in crop production and potential management decisions to ameliorate abiotic stresses for better crop production. N is a primary constituent of the nucleotides and proteins that are essential for life. Production and application of N fertilizers consume huge amounts of energy, and excess is detrimental to the environment. Therefore, increasing plant N use efficiency (NUE) is important for the development of sustainable agriculture. NUE has a key role in crop yield and can be enhanced by controlling loss of fertilizers by application of humic acid and natural polymers (hydrogels), having high water-holding capacity which can improve plant performance under field conditions...
April 22, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28433932/the-unseen-rhizosphere-root-soil-microbe-interactions-for-crop-production
#2
REVIEW
Ruifu Zhang, Jorge M Vivanco, Qirong Shen
The underground root-soil-microbe interactions are extremely complex, but vitally important for aboveground plant growth, health and fitness. The pressure to reduce our reliance on agrochemicals, and sustainable efforts to develop agriculture makes rhizosphere interactions' research a hotspot. Recent advances provide new insights about the signals, pathways, functions and mechanisms of these interactions. In this review, we provide an overview about recent progress in rhizosphere interaction networks in crops...
April 20, 2017: Current Opinion in Microbiology
https://www.readbyqxmd.com/read/28431803/reutilization-of-discarded-biomass-for-preparing-functional-polymer-materials
#3
REVIEW
Jianfeng Wang, Wenzhen Qian, Yufeng He, Yubing Xiong, Pengfei Song, Rong-Min Wang
Biomass is abundant and recyclable on the earth, which has been assigned numerous roles to human beings. However, over the past decades, accompanying with the rapid expansion of man-made materials, such as alloy, plastic, synthetic rubber and fiber, a great number of natural materials had been neglected and abandoned, such as straw, which cause a waste of resource and environmental pollution. In this review, based on introducing sources of discarded biomass, the main composition and polymer chains in discarded biomass materials, the traditional treatment and novel approach for reutilization of discarded biomass were summarized...
April 18, 2017: Waste Management
https://www.readbyqxmd.com/read/28431370/hydrodynamic-influence-on-reservoir-sustainability-in-semi-arid-climate-a-physicochemical-and-environmental-isotopic-study
#4
Rawaa Ammar, Véronique Kazpard, Antoine G El Samrani, Nabil Amacha, Zeinab Saad, Lei Chou
Water scarcity and increasing water demand require the development of water management plans such as establishing artificial lakes and dams. Plans to meet water needs are faced by uprising challenges to improve water quality and to ensure the sustainability of hydro-projects. Environmental isotopes coupled to water physicochemical characteristics were investigated over a biennial cycle to assess both geomorphological and environmental impacts on the water quality of a reservoir situated in an intensively used agricultural watershed under a Mediterranean semi-arid climate...
April 17, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28428798/plastic-film-mulching-for-enhanced-water-use-efficiency-and-economic-returns-from-maize-fields-in-semiarid-china
#5
Peng Zhang, Ting Wei, Tie Cai, Shahzad Ali, Qingfang Han, Xiaolong Ren, Zhikuan Jia
Film mulch has gradually been popularized to increase water availability to crops for improving and stabilizing agricultural production in the semiarid areas of Northwest China. To find more sustainable and economic film mulch methods for alleviating drought stress in semiarid region, it is necessary to test optimum planting methods in same cultivation conditions. A field experiment was conducted during 2013 and 2014 to evaluate the effects of different plastic film mulch methods on soil water, soil temperature, water use efficiency (WUE), yield and revenue...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28428152/convenience-food-with-environmentally-sustainable-attributes-a-consumer-perspective
#6
Stefanella Stranieri, Elena Claire Ricci, Alessandro Banterle
The use of chemicals in agriculture poses risks on both human health and the environment. Regulatory measures, both mandatory and voluntary, have been introduced to promote a reduction in the use of pesticides. The proliferation of such standards is related to the gradual shift of consumer preferences towards foods with reduced negative health and environmental impacts. Beside consumer demand for sustainable food products, convenience foods are also assuming an increasingly important role in developed countries...
April 17, 2017: Appetite
https://www.readbyqxmd.com/read/28424717/expression-of-the-maize-dof1-transcription-factor-in-wheat-and-sorghum
#7
Pamela A Peña, Truyen Quach, Shirley Sato, Zhengxiang Ge, Natalya Nersesian, Taity Changa, Ismail Dweikat, Madhavan Soundararajan, Tom E Clemente
Nitrogen is essential for plant growth and development. Improving the ability of plants to acquire and assimilate nitrogen more efficiently is a key agronomic parameter that will augment sustainability in agriculture. A transcription factor approach was pursued to address improvement of nitrogen use efficiency in two major commodity crops. To this end, the Zea mays Dof1 (ZmDof1) transcription factor was expressed in both wheat (Triticum aestivum) and sorghum (Sorghum bicolor) either constitutively, UBI4 promoter from sugarcane, or in a tissue specific fashion via the maize rbcS1 promoter...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28423943/high-value-added-lipids-produced-by-microorganisms-a-potential-use-of-sugarcane-vinasse
#8
Bruna Soares Fernandes, João Paulo Fernandes Vieira, Fabiano Jares Contesini, Paulo Eduardo Mantelatto, Marcelo Zaiat, José Geraldo da Cruz Pradella
This review aims to present an innovative concept of high value added lipids produced by heterotrophic microorganisms, bacteria and fungi, using carbon sources, such as sugars, acids and alcohols that could come from sugarcane vinasse, which is the main byproduct from ethanol production that is released in the distillation step. Vinasse is a rich carbon source and low-cost feedstock produced in large amounts from ethanol production. In 2019, the Brazilian Ministry of Agriculture, Livestock and Food Supply estimates that growth of ethanol domestic consumption will be 58...
April 20, 2017: Critical Reviews in Biotechnology
https://www.readbyqxmd.com/read/28422139/high-pesticide-risk-to-honey-bees-despite-low-focal-crop-pollen-collection-during-pollination-of-a-mass-blooming-crop
#9
Scott H McArt, Ashley A Fersch, Nelson J Milano, Lauren L Truitt, Katalin Böröczky
Honey bees provide critical pollination services for many agricultural crops. While the contribution of pesticides to current hive loss rates is debated, remarkably little is known regarding the magnitude of risk to bees and mechanisms of exposure during pollination. Here, we show that pesticide risk in recently accumulated beebread was above regulatory agency levels of concern for acute or chronic exposure at 5 and 22 of the 30 apple orchards, respectively, where we placed 120 experimental hives. Landscape context strongly predicted focal crop pollen foraging and total pesticide residues, which were dominated by fungicides...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28421280/systems-biology-of-seeds-deciphering-the-molecular-mechanisms-of-seed-storage-dormancy-and-onset-of-germination
#10
EDITORIAL
Nese Sreenivasulu
Seeds are heterogeneous storage reserves with wide array of storage compounds that include various soluble carbohydrates, starch polymer, storage proteins and lipids. These stored reserves comprise 70% of the world's caloric intake in the form of food and animal feed produced through sustainable agriculture, which contributes to food and nutritional security. Seed systems biology remains an enigmatic subject in understanding seed storage processes, maturation and pre-germinative metabolism. The reviews and research articles covered in this special issue of Plant Cell Reports highlight recent advances made in the area of seed biology that cover various systems biology applications such as gene regulatory networks, metabolomics, epigenetics and the role of micro-RNA in seed development...
April 18, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28421101/hyperspectral-technologies-for-assessing-seed-germination-and-trifloxysulfuron-methyl-response-in-amaranthus-palmeri-palmer-amaranth
#11
Maor Matzrafi, Ittai Herrmann, Christian Nansen, Tom Kliper, Yotam Zait, Timea Ignat, Dana Siso, Baruch Rubin, Arnon Karnieli, Hanan Eizenberg
Weed infestations in agricultural systems constitute a serious challenge to agricultural sustainability and food security worldwide. Amaranthus palmeri S. Watson (Palmer amaranth) is one of the most noxious weeds causing significant yield reductions in various crops. The ability to estimate seed viability and herbicide susceptibility is a key factor in the development of a long-term management strategy, particularly since the misuse of herbicides is driving the evolution of herbicide response in various weed species...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28421100/integrated-approach-of-agri-nanotechnology-challenges-and-future-trends
#12
REVIEW
Sandhya Mishra, Chetan Keswani, P C Abhilash, Leonardo F Fraceto, Harikesh Bahadur Singh
Nanotechnology representing a new frontier in modern agriculture is anticipated to become a major thrust in near future by offering potential applications. This integrating approach, i.e., agri-nanotechnology has great potential to cope with global challenges of food production/security, sustainability and climate change. However, despite the potential benefits of nanotechnology in agriculture so far, their relevance has not reached up to the field conditions. The elevating concerns about fate, transport, bioavailability, nanoparticles toxicity and inappropriateness of regulatory framework limit the complete acceptance and inclination to adopt nanotechnologies in agricultural sector...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28419490/european-cowpea-landraces-for-a-more-sustainable-agriculture-system-and-novel-foods
#13
Márcia Carvalho, Penelope J Bebeli, Graça Pereira, Isaura Castro, Catalina Egea-Gilabert, Manuela Matos, Efstathia Lazaridi, Isabel Duarte, Teresa Lino-Neto, Georgia Ntatsi, Miguel Rodrigues, Dimitrios Savvas, Eduardo Rosa, Valdemar Carnide
BACKGROUND: Genetic diversity is fundamental for breeding programs and consequently has an important role to obtain new varieties. To properly use the genetic diversity present in germplasm collections, a good knowledge of the agro-morphological traits of each accession is needed. The aim of this study was to explore the production capacity of 24 cowpea landraces from Southern Europe, through phenotypic characterization and evaluation in three different locations of Greece and Portugal...
April 17, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28419301/nitrogen-use-efficiency-in-crops-lessons-from-arabidopsis-and-rice
#14
Hua Li, Bin Hu, Chengcai Chu
Application of chemical fertilizers, especially nitrogen (N), to crops has increased dramatically in the last half century and therefore developing crop varieties with improved N use efficiency (NUE) is urgent for sustainable agriculture. N utilization procedures generally can be divided into uptake, transport, and assimilation. Transporters for nitrate or ammonium acquisition and enzymes for assimilation are among the essential components determining NUE, and many transcription factors also play a pivotal role in regulating N use-associated genes, thereby contributing to NUE...
April 17, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28417328/characterization-and-pyrolysis-of-chlorella-vulgaris-and-arthrospira-platensis-potential-of-bio-oil-and-chemical-production-by-py-gc-ms-analysis
#15
Hanna N Almeida, Guilherme Q Calixto, Bruna M E Chagas, Dulce M A Melo, Fabio M Resende, Marcus A F Melo, Renata Martins Braga
Biofuels have been seen as potential sources to meet future energy demand as a renewable and sustainable energy source. Despite the fact that the production technology of first-generation biofuels is consolidated, these biofuels are produced from foods crops such as grains, sugar cane, and vegetable oils competing with food for crop use and agricultural land. In recent years, it was found that microalgae have the potential to provide a viable alternative to fossil fuels as source of biofuels without compromising food supplies or arable land...
April 17, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28415005/agricultural-sustainable-intensification-improved-nitrogen-use-efficiency-and-maintained-high-crop-yield-during-1980-2014-in-northern-china
#16
Xin Zhang, Roland Bol, Clive Rahn, Guangmin Xiao, Fanqiao Meng, Wenliang Wu
Global population increase will require rapid increase of food production from existing agricultural land by 2050, which will inevitably mean the increase of agricultural productivity. Due to agricultural sustainable intensification since the 1990s, crop production in Huantai County of northern China has risen to 15tha(-1)yr(-1) for the annual wheat-maize rotation system. We examined the temporal dynamics of nitrogen (N) budget, N losses, and N use efficiency (NUE) during the 35years (1980-2014) in Huantai...
April 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28413245/is-increasing-inorganic-fertilizer-use-for-maize-production-in-ssa-a-profitable-proposition-evidence-from-nigeria
#17
Lenis Saweda O Liverpool-Tasie, Bolarin T Omonona, Awa Sanou, Wale O Ogunleye
Inorganic fertilizer use across Sub-Saharan Africa is generally considered to be low. Yet, the notion that fertilizer use is too low is predicated on the assumption that it is profitable to use rates higher than currently observed. There is, however, limited empirical evidence to support this. Using a nationally representative panel dataset, this paper empirically estimates the profitability of fertilizer use for maize production in Nigeria. We find that fertilizer use in Nigeria is not as low as conventional wisdom suggests...
February 2017: Food Policy
https://www.readbyqxmd.com/read/28411151/enabling-a-sustainable-and-prosperous-future-through-science-and-innovation-in-the-bioeconomy-at-agriculture-and-agri-food-canada
#18
REVIEW
Sara F Sarkar, Jacquelyne S Poon, Etienne Lepage, Lori Bilecki, Benoit Girard
Science and innovation are important components underpinning the agricultural and agri-food system in Canada. Canada's vast geographical area presents diverse, regionally specific requirements in addition to the 21st century agricultural challenges facing the overall sector. As the broader needs of the agricultural landscape have evolved and will continue to do so in the next few decades, there is a trend in place to transition towards a sustainable bioeconomy, contributing to reducing greenhouse gas emission and our dependency on non-renewable resources...
April 11, 2017: New Biotechnology
https://www.readbyqxmd.com/read/28409185/ecological-risk-assessment-of-agricultural-soils-for-the-definition-of-soil-screening-values-a-comparison-between-substance-based-and-matrix-based-approaches
#19
Alberto Pivato, Maria Cristina Lavagnolo, Barbara Manachini, Stefano Vanin, Roberto Raga, Giovanni Beggio
The Italian legislation on contaminated soils does not include the Ecological Risk Assessment (ERA) and this deficiency has important consequences for the sustainable management of agricultural soils. The present research compares the results of two ERA procedures applied to agriculture (i) one based on the "substance-based" approach and (ii) a second based on the "matrix-based" approach. In the former the soil screening values (SVs) for individual substances were derived according to institutional foreign guidelines...
April 2017: Heliyon
https://www.readbyqxmd.com/read/28408911/metabolic-adaptation-a-specialized-leaf-organ-structure-and-vascular-responses-to-diurnal-n2-fixation-by-nostoc-azollae-sustain-the-astonishing-productivity-of-azolla-ferns-without-nitrogen-fertilizer
#20
Paul Brouwer, Andrea Bräutigam, Valerie A Buijs, Anne O E Tazelaar, Adrie van der Werf, Urte Schlüter, Gert-Jan Reichart, Anthony Bolger, Björn Usadel, Andreas P M Weber, Henriette Schluepmann
Sustainable agriculture demands reduced input of man-made nitrogen (N) fertilizer, yet N2 fixation limits the productivity of crops with heterotrophic diazotrophic bacterial symbionts. We investigated floating ferns from the genus Azolla that host phototrophic diazotrophic Nostoc azollae in leaf pockets and belong to the fastest growing plants. Experimental production reported here demonstrated N-fertilizer independent production of nitrogen-rich biomass with an annual yield potential per ha of 1200 kg(-1) N fixed and 35 t dry biomass...
2017: Frontiers in Plant Science
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