keyword
MENU ▼
Read by QxMD icon Read
search

soil management

keyword
https://www.readbyqxmd.com/read/28538814/maize-dry-matter-production-and-macronutrient-extraction-model-as-a-new-approach-for-fertilizer-rate-estimation
#1
Karla V Martins, Durval Dourado-Neto, Klaus Reichardt, José L Favarin, Felipe F Sartori, Guilherme Felisberto, Simone C Mello
Decision support for nutrient application remains an enigma if based on soil nutrient analysis. If the crop could be used as an auxiliary indicator, the plant nutrient status during different growth stages could complement the soil test, improving the fertilizer recommendation. Nutrient absorption and partitioning in the plant are here studied and described with mathematical models. The objective of this study considers the temporal variation of the nutrient uptake rate, which should define crop needs as compared to the critical content in soil solution...
May 22, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28538103/detoxification-of-fusaric-acid-by-the-soil-microbe-mucor-rouxii
#2
Frankie K Crutcher, Lorraine S Puckhaber, Alois A Bell, Jinggao Liu, Sara E Duke, Robert D Stipanovic, Robert L Nichols
Fusarium oxysporum f. sp. vasinfectum race 4 (VCG0114), which causes root rot and wilt of cotton (Gossypium hirsutum and G. barbadense) has been identified recently for the first time in the western hemisphere in certain fields in the San Joaquin Valley of California. This pathotype produces copious quantities of the plant toxin fusaric acid (5-butyl-2-pyridinecarboxylic acid) compared to other isolates of F. oxysporum f. sp. vasinfectum (Fov) that are indigenous to the U. S. Fusaric acid is toxic to cotton plants and may help the pathogen compete with other microbes in the soil...
May 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28535601/risk-of-post-fire-metal-mobilization-into-surface-water-resources-a-review
#3
REVIEW
Joji Abraham, Kim Dowling, Singarayer Florentine
One of the significant economic benefits to communities around the world of having pristine forest catchments is the supply of substantial quantities of high quality potable water. This supports a saving of around US$ 4.1 trillion per year globally by limiting the cost of expensive drinking water treatments and provision of unnecessary infrastructure. Even low levels of contaminants specifically organics and metals in catchments when in a mobile state can reduce these economic benefits by seriously affecting the water quality...
May 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28535127/modelling-virus-coinfection-to-inform-management-of-maize-lethal-necrosis-in-kenya
#4
Frank Hilker, Linda Allen, Vrushali Bokil, Cheryl Briggs, Zhilan Feng, Karen A Garrett, Louis Gross, Frédéric Hamelin, Michael J Jeger, Carrie Manore, Alison Power, Margaret Redinbaugh, Megan Rúa, Nik J Cunniffe
Maize lethal necrosis (MLN) has emerged as a serious threat to food security in sub-Saharan Africa. MLN is caused by coinfection with two viruses, maize chlorotic mottle virus (MCMV) and a potyvirus, often sugarcane mosaic virus (SCMV). To better understand dynamics of MLN and to provide insight into disease management, we model the spread of the viruses causing MLN within and between growing seasons. The model allows for transmission via vectors, soil and seeds, as well as exogenous sources of infection. Following model parameterisation, we predict how management affects disease prevalence and crop performance over multiple seasons...
May 23, 2017: Phytopathology
https://www.readbyqxmd.com/read/28533899/genetic-diversity-and-structure-of-an-endangered-desert-shrub-and-the-implications-for-conservation
#5
Zhihao Su, Bryce A Richardson, Li Zhuo, Xiaolong Jiang, Wenjun Li, Xiaoshan Kang
Population genetic information can provide valuable insight for the conservation and management of threatened and endangered plant species. Tamarix taklamakanensis is an endangered shrub endemic to arid basins of northwestern China. This species serves to stabilize soils in this region, but has seen substantial loss in its abundance due to depletion of ground water. The populations of this species have become small and fragmented, warranting conservation. Seven microsatellite loci were used to assess the genetic diversity and structure of 15 populations in the Tarim Basin, China...
May 2017: AoB Plants
https://www.readbyqxmd.com/read/28533783/progress-on-azadirachta-indica-based-biopesticides-in-replacing-synthetic-toxic-pesticides
#6
REVIEW
Suman Chaudhary, Rupinder K Kanwar, Alka Sehgal, David M Cahill, Colin J Barrow, Rakesh Sehgal, Jagat R Kanwar
Over the years, extensive use of commercially available synthetic pesticides against phytophagous insects has led to their bioaccumulation in the environment causing increased resistance and reduction in soil biodiversity. Further, 90% of the applied pesticides enter the various environmental resources as a result of run-off, exposing the farmers as well as consumers of the agricultural produce to severe health issues. Therefore, growing attention has been given toward the development of alternate environmentally friendly pesticides/insecticides that would aid an efficient pest management system and also prevent chronic exposures leading to diseases...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28532161/modelling-of-phytoextraction-efficiency-of-microbially-stimulated-salix-dasyclados-l-in-the-soils-with-different-speciation-of-heavy-metals
#7
Michał Złoch, Tomasz Kowalkowski, Jarosław Tyburski, Katarzyna Hrynkiewicz
Bioaugmentation of soils with selected microorganisms during phytoextraction can be the key solution, but the actual efficacy of this technology should be confirmed for different physicochemical soil parameters and heavy metal availability to guarantee the universality of this method. Equally important is development of the accurate prediction tool to manage phytoremediation process.The main objective of this study was to evaluate the role of three metalotolerant siderophore-producing Streptomyces sp. B1-B3 strains in the phytoremediation of heavy metals with the use of S...
May 22, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28531951/identifying-and-quantifying-geochemical-and-mixing-processes-in-the-matanza-riachuelo-aquifer-system-argentina
#8
S Armengol, M Manzano, S A Bea, S Martínez
The Matanza-Riachuelo River Basin, in the Northeast of the Buenos Aires Province, is one of the most industrialized and populated region in Argentina and it is worldwide known for its alarming environmental degradation. In order to prevent further damages, the aquifer system, which consists of two overlaid aquifers, is being monitored from 2008 by the river basin authority, Autoridad de la Cuenca Matanza-Riachuelo. The groundwater chemical baseline has been established in a previous paper (Zabala et al., 2016), and this one is devoted to the identification of the main physical and hydrogeochemical processes that control groundwater chemistry and its areal distribution...
May 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28531792/an-evaluation-of-the-sustainability-of-onsite-wastewater-treatment-systems-for-nutrient-management
#9
Nancy Diaz-Elsayed, Xiaofan Xu, Maraida Balaguer-Barbosa, Qiong Zhang
The impairment of water bodies from nutrient pollution is a challenging environmental problem that could lead to high eutrophic conditions, fish kills, and human illness, while negatively impacting industries that rely on thriving water bodies. Onsite wastewater treatment systems (OWTSs) are a major source of nutrients, however no prior studies have conducted a holistic sustainability assessment of OWTSs that considers their ability to manage nutrients at the household-level in the United States. The aim of this study is therefore to evaluate the environmental and economic impacts of conventional and advanced OWTSs with respect to their ability to remove total nitrogen (TN)...
May 5, 2017: Water Research
https://www.readbyqxmd.com/read/28529501/microbial-degradation-of-lobster-shells-to-extract-chitin-derivatives-for-plant-disease-management
#10
Gayathri Ilangumaran, Glenn Stratton, Sridhar Ravichandran, Pushp S Shukla, Philippe Potin, Samuel Asiedu, Balakrishnan Prithiviraj
Biodegradation of lobster shells by chitinolytic microorganisms are an environment safe approach to utilize lobster processing wastes for chitin derivation. In this study, we report degradation activities of two microbes, "S223" and "S224" isolated from soil samples that had the highest rate of deproteinization, demineralization and chitinolysis among ten microorganisms screened. Isolates S223 and S224 had 27.3 and 103.8 protease units mg(-1) protein and 12.3 and 11.2 μg ml(-1) of calcium in their samples, respectively, after 1 week of incubation with raw lobster shells...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28528105/vulnerability-of-global-food-production-to-extreme-climatic-events
#11
F Yeni, H Alpas
It is known that the frequency, intensity or duration of the extreme climatic events have been changing substantially. The ultimate goal of this study was to identify current vulnerabilities of global primary food production against extreme climatic events, and to discuss potential entry points for adaptation planning by means of an explorative vulnerability analysis. Outcomes of this analysis were demonstrated as a composite index where 118 country performances in maintaining safety of food production were compared and ranked against climate change...
June 2017: Food Research International
https://www.readbyqxmd.com/read/28527035/comparison-of-rhizosphere-properties-as-affected-by-different-bt-and-non-bt-cotton-gossypium-hirsutum-l-genotypes-and-fertilization
#12
Maqshoof Ahamd, Waleed Mumtaz Abbasi, Moazzam Jamil, Muhammad Iqbal, Azhar Hussain, Muhammad Fakhar-U-Zaman Akhtar, Farheen Nazli
Incorporation of genetically modified crops in the cropping system raises the need for studying the effect of these crops on the soil ecosystem. The current study aimed to compare the effect of Bacillus thuringiensis (Bt)- and non-Bt-cotton (Gossypium hirsutum L.) genotypes on rhizosphere properties under fertilized and unfertilized soil conditions. One non-Bt-cotton (IUB 75) and four Bt-cotton varieties (IUB-222, MM-58, IUB-13, FH-142) were sown in a Randomized Complete Block Design (RCBD) in a factorial fashion with three replications under unfertilized (T1) and fertilized (T2 at NPK 310-170-110 kg ha(-1)) soil conditions...
June 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28526990/how-does-supplementary-feeding-affect-endoparasite-infection-in-wild-boar
#13
Ragne Oja, Kaisa Velström, Epp Moks, Pikka Jokelainen, Brian Lassen
Supplementary feeding is widely used in game management but may aid the transmission of parasites. Firstly, feeding sites attract animals and may be regarded as high-risk areas for parasite transmission. Secondly, high host population densities resulting from and supported by supplementary feeding, as well as accumulation of parasites in the environment, may increase parasite prevalence. Our aim was to investigate whether host density or the number of feeding sites drives endoparasite infection in an Estonian wild boar (Sus scrofa) population...
May 19, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28526821/influence-of-soil-moisture-on-codenitrification-fluxes-from-a-urea-affected-pasture-soil
#14
Timothy J Clough, Gary J Lanigan, Cecile A M de Klein, Md Sainur Samad, Sergio E Morales, David Rex, Lars R Bakken, Charlotte Johns, Leo M Condron, Jim Grant, Karl G Richards
Intensively managed agricultural pastures contribute to N2O and N2 fluxes resulting in detrimental environmental outcomes and poor N use efficiency, respectively. Besides nitrification, nitrifier-denitrification and heterotrophic denitrification, alternative pathways such as codenitrification also contribute to emissions under ruminant urine-affected soil. However, information on codenitrification is sparse. The objectives of this experiment were to assess the effects of soil moisture and soil inorganic-N dynamics on the relative contributions of codenitrification and denitrification (heterotrophic denitrification) to the N2O and N2 fluxes under a simulated ruminant urine event...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28525939/green-manure-and-long-term-fertilization-effects-on-soil-zinc-and-cadmium-availability-and-uptake-by-wheat-triticum-aestivum-l-at-different-growth-stages
#15
Roman Grüter, Benjamin Costerousse, Angelina Bertoni, Jochen Mayer, Cécile Thonar, Emmanuel Frossard, Rainer Schulin, Susan Tandy
Zinc (Zn) deficiency in human populations depending on cereals as a main source of Zn is a global malnutrition problem. In this field study, we investigated the potential of green manure application to increase soil Zn availability and wheat grain Zn concentrations (biofortification) on a Luvisol with different long-term fertilizer management. We also studied cadmium (Cd), as wheat is a major contributor of this undesired non-essential element to human diets. Clover (Trifolium alexandrinum L.), mustard (Sinapis alba L...
May 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28522870/the-rice-production-practices-of-high-yield-and-high-nitrogen-use-efficiency-in-jiangsu-china
#16
Jiuxin Guo, Xiangyu Hu, Limin Gao, Kailiu Xie, Ning Ling, Qirong Shen, Shuijin Hu, Shiwei Guo
To face the great challenges of ensuring food security and environmental sustainability, agricultural production must be improved by high yield and high resource utilization efficiency (HYHE). We recently addressed this challenge and evaluated yield potential by surveying 735 farmers in 2008-2012 and then conducting 6 rice field experiments in 2008-2013 with large demonstration areas in 2010-2013 aimed to actualize the HYHE in Jiangsu Province, China. The survey result showed that the averaged N rate, grain yield and N partial factor productivity (PFPN) of the farmers were 336...
May 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28522456/stress-response-gene-expression-reflects-morpho-physiological-responses-to-water-deficit
#17
Wojciech Rymaszewski, Denis Vile, Alexis Bédiée, Myriam Dauzat, Nathalie Luchaire, Dominika Kamrowska, Christine Granier, Jacek Hennig
Acclimation to water deficit (WD) enables plants to maintain growth under unfavorable environmental conditions, although the mechanisms are not completely understood. In this study, the natural variation of long-term acclimation to moderate (MWD) and severe (SWD) soil water deficits was investigated in 18 Arabidopsis accessions using PHENOPSIS, an automated phenotyping platform. Soil water content was adjusted at an early stage of plant development and maintained at a constant level until reproductive age was achieved...
May 18, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28521166/factors-controlling-cadmium-and-lead-activities-in-different-parent-material-derived-soils-from-the-pearl-river-basin
#18
Shuran He, Qin Lu, Wenyan Li, Zongling Ren, Zhen Zhou, Xiao Feng, Yulong Zhang, Yongtao Li
Labile metals in agricultural soils are available to crops and thus pose a great health risk for human beings. Therefore, factors influencing heavy metal activity are of interest to researchers. In this study, a total of 142 soil samples representing 5 typical parent materials in the Pearl River Basin (PRB), China were collected to investigate factors impacting the distribution of labile Cd and Pb in the soils. The results showed that the labile fractions accounted for 0.03%-14.7% for Cd and 0.01%-0.39% for Pb of the total metals, and the labile fractions were linearly correlated to their corresponding total contents...
May 2, 2017: Chemosphere
https://www.readbyqxmd.com/read/28515729/growth-and-yield-responses-of-cowpea-to-inoculation-and-phosphorus-fertilization-in-different-environments
#19
Stephen Kyei-Boahen, Canon E N Savala, David Chikoye, Robert Abaidoo
Cowpea (Vigna unguiculata) is a major source of dietary protein and essential component of the cropping systems in semi-arid regions of Sub-Saharan Africa. However, yields are very low due to lack of improved cultivars, poor management practices, and limited inputs use. The objectives of this study were to assess the effects of rhizobia inoculant and P on nodulation, N accumulation and yield of two cowpea cultivars in Mozambique. Field study was conducted in three contrasting environments during the 2013/2014 and 2014/2015 seasons using randomized complete block design with four replications and four treatments...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28511362/towards-complete-and-harmonized-assessment-of-soil-carbon-stocks-and-balance-in-forests-the-ability-of-the-yasso07-model-across-a-wide-gradient-of-climatic-and-forest-conditions-in-europe
#20
Laura Hernández, Robert Jandl, Viorel N B Blujdea, Aleksi Lehtonen, Kaie Kriiska, Iciar Alberdi, Veiko Adermann, Isabel Cañellas, Gheorghe Marin, Daniel Moreno-Fernández, Ivika Ostonen, Mats Varik, Markus Didion
Accurate carbon-balance accounting in forest soils is necessary for the development of climate change policy. However, changes in soil organic carbon (SOC) occur slowly and these changes may not be captured through repeated soil inventories. Simulation models may be used as alternatives to SOC measurement. The Yasso07 model presents a suitable alternative because most of the data required for the application are readily available in countries with common forest surveys. In this study, we test the suitability of Yasso07 for simulating SOC stocks and stock changes in a variety of European forests affected by different climatic, land use and forest management conditions and we address country-specific cases with differing resources and data availability...
May 12, 2017: Science of the Total Environment
keyword
keyword
104649
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"