keyword
MENU ▼
Read by QxMD icon Read
search

Crop rotation

keyword
https://www.readbyqxmd.com/read/28916558/potential-of-rice-stubble-as-a-reservoir-of-bradyrhizobial-inoculum-in-rice-legume-crop-rotation
#1
Pongdet Piromyou, Teerana Greetatorn, Kamonluck Teamtisong, Panlada Tittabutr, Nantakorn Boonkerd, Neung Teaumroong
Bradyrhizobium encompasses a variety of bacteria that can live in symbiotic and endophytic associations with leguminous and non-leguminous plants such as rice. Therefore, it can be expected that rice endophytic bradyrhizobia can be applied in the rice-legume crop rotation system. Some endophytic bradyrhizobial strains were isolated from rice (Oryza sativa L.) tissues. The rice biomass could be enhanced when supplying KNO3, NH4NO3, or urea with bradyrhizobial strain inoculation, especially strain SUTN9-2. In contrast, the strains which suppressed rice growth were photosynthetic bradyrhizobia and also found to produce nitric oxide (NO) in the rice root...
September 15, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28910714/nitrogen-discharge-pathways-in-vegetable-production-as-non-point-sources-of-pollution-and-measures-to-control-it
#2
Ju Min, Weiming Shi
Discharge of nitrogen (N) from fertilizers applied to vegetables is becoming a serious environmental problem. In a field experiment involving a celery-tomato-fallow-lettuce rotation, leaching was the primary pathway of N loss (56.1±0.4% of the total), followed, in descending order, by runoff (11.7±0.3%), N2O emissions (1.6±0.1%), and volatilization of ammonia (0.5±0.1%). Decreasing the traditional dose of N by 40% in each growth season decreased N leaching by 22.3±4.5, 39.8±6.7, 40.3±2.9 and 27.4±3...
September 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28893985/coupling-of-pollination-services-and-coffee-suitability-under-climate-change
#3
Pablo Imbach, Emily Fung, Lee Hannah, Carlos E Navarro-Racines, David W Roubik, Taylor H Ricketts, Celia A Harvey, Camila I Donatti, Peter Läderach, Bruno Locatelli, Patrick R Roehrdanz
Climate change will cause geographic range shifts for pollinators and major crops, with global implications for food security and rural livelihoods. However, little is known about the potential for coupled impacts of climate change on pollinators and crops. Coffee production exemplifies this issue, because large losses in areas suitable for coffee production have been projected due to climate change and because coffee production is dependent on bee pollination. We modeled the potential distributions of coffee and coffee pollinators under current and future climates in Latin America to understand whether future coffee-suitable areas will also be suitable for pollinators...
September 11, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28884120/automated-classification-of-lung-cancer-types-from-cytological-images-using-deep-convolutional-neural-networks
#4
Atsushi Teramoto, Tetsuya Tsukamoto, Yuka Kiriyama, Hiroshi Fujita
Lung cancer is a leading cause of death worldwide. Currently, in differential diagnosis of lung cancer, accurate classification of cancer types (adenocarcinoma, squamous cell carcinoma, and small cell carcinoma) is required. However, improving the accuracy and stability of diagnosis is challenging. In this study, we developed an automated classification scheme for lung cancers presented in microscopic images using a deep convolutional neural network (DCNN), which is a major deep learning technique. The DCNN used for classification consists of three convolutional layers, three pooling layers, and two fully connected layers...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28883643/soil-organic-phosphorus-transformations-during-2000-years-of-paddy-rice-and-non-paddy-management-in-the-yangtze-river-delta-china
#5
Xiaoqian Jiang, Wulf Amelung, Barbara J Cade-Menun, Roland Bol, Sabine Willbold, Zhihong Cao, Erwin Klumpp
The contents and properties of soil organic phosphorus (Po) largely drive ecosystem productivity with increasing development of natural soil. We hypothesized that soil Po would initially increase with paddy management and then would persist under steady-state conditions. We analyzed soils from a 2000-year chronosequence of a rice-wheat rotation and an adjacent non-paddy 700-year chronosequence in Bay of Hangzhou (China) for their Po composition using solution (31)P-NMR after NaOH-EDTA extraction. Land reclamation promoted Po accumulation in both paddy and non-paddy topsoils (depths ≤ 18 cm) until steady-state equilibria were reached within 200 years of land use...
September 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28881946/soil-and-foliar-arthropod-abundance-and-diversity-in-five-cropping-systems-in-the-coastal-plains-of-north-carolina
#6
Paul R Adams, David B Orr, Consuelo Arellano, Yasmin J Cardoza
Soil and foliar arthropod populations in agricultural settings respond to environmental disturbance and degradation, impacting functional biodiversity in agroecosystems. The objective of this study was to evaluate system level management effects on soil and foliar arthropod abundance and diversity in corn and soybean. Our field experiment was a completely randomized block design with three replicates for five farming systems which included: Conventional clean till, conventional long rotation, conventional no-till, organic clean till, and organic reduced till...
August 1, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28881242/comparison-of-three-types-of-oil-crop-rotation-systems-for-effective-use-and-remediation-of-heavy-metal-contaminated-agricultural-soil
#7
Yang Yang, Xihong Zhou, Boqing Tie, Liang Peng, Hongliang Li, Kelin Wang, Qingru Zeng
Selecting suitable plants tolerant to heavy metals and producing products of economic value may be a key factor in promoting the practical application of phytoremediation polluted soils. The aim of this study is to further understand the utilization and remediation of seriously contaminated agricultural soil. In a one-year field experiment, we grew oilseed rape over the winter and then subsequently sunflowers, peanuts and sesame after the first harvest. This three rotation system produced high yields of dry biomass; the oilseed rape-sunflower, oilseed rape-peanut and oilseed rape-sesame rotation allowed us to extract 458...
August 29, 2017: Chemosphere
https://www.readbyqxmd.com/read/28869743/impact-of-agronomic-and-climatic-factors-on-the-mycotoxin-content-of-harvested-oats-in-the-uk
#8
Simon G Edwards
A survey was conducted to determine the concentration of fusarium mycotoxins in UK oats over three seasons (2006-2008). One hundred oat samples were collected each year at harvest, together with agronomic details, and analysed for ten fusarium mycotoxins. The incidence and concentration of most fusarium mycotoxins, including deoxynivalenol and zearalenone, were relatively low in oats compared to values previously reported for wheat. HT-2 toxin (HT2) and T-2 toxin (T2) levels were relatively high with an overall combined (HT2+T2) mean of 450 μg kg(-1) for 2006-2008...
September 4, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28847090/nitrate-accumulation-and-leaching-potential-reduced-by-coupled-water-and-nitrogen-management-in-the-huang-huai-hai-plain
#9
Ping Huang, Jiabao Zhang, Anning Zhu, Xiaopeng Li, Donghao Ma, Xiuli Xin, Congzhi Zhang, Shengjun Wu, Gina Garland, Engil Isadora Pujol Pereira
Irrigation and nitrogen (N) fertilization in excess of crop requirements are responsible for substantial nitrate accumulation in the soil profile and contamination of groundwater by nitrate leaching during intensive agricultural production. In this on-farm field trial, we compared 16 different water and N treatments on nitrate accumulation and its distribution in the soil profile (0-180cm), nitrate leaching potential, and groundwater nitrate concentration within a summer-maize (Zea mays L.) and winter-wheat (Triticum aestivum L...
August 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28846909/uptake-of-silver-by-brown-rice-and-wheat-in-soils-repeatedly-amended-with-biosolids
#10
Longhua Wu, Lu Yang, Zhaoyang Wang, Miaomiao Cheng, Zhu Li, Wuxing Liu, Tingting Ma, Peter Christie, Yongming Luo
There have been numerous studies simulating the behaviour and fate of silver (Ag) applied to soils in biosolids in recent decades but the results remain to be verified under actual farming conditions. Here, we report a study of the transfer of Ag along the biosolids-soil-crop pathway with repeated biosolid applications over a four-year period to three contrasting soil types under rice-wheat rotation cultivation. A systematic investigation of Ag concentrations in biosolids throughout China shows Ag concentrations ranging from 0...
August 25, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28834651/gene-flow-from-single-and-stacked-herbicide-resistant-rice-oryza-sativa-modeling-occurrence-of-multiple-herbicide-resistant-weedy-rice
#11
Joseph Dauer, Andrew Hulting, Dale Carlson, Luke Mankin, John Harden, Carol Mallory-Smith
BACKGROUND: Provisia™ rice (PV), a non-genetically engineered (GE) quizalofop-resistant rice, will provide growers with an additional option for weed management to use in conjunction with Clearfield® rice (CL) production. Modeling compared the impact of stacking resistance traits versus single traits in rice on introgression of the resistance trait to weedy rice (also called red rice). Common weed management practices were applied to 2-, 3-, and 4-year crop rotations and resistant and multiple-resistant weedy rice seeds, seedlings, and mature plants were tracked for 15 years...
August 23, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28823014/assessment-of-the-quality-of-the-harran-plain-soils-under-long-term-cultivation
#12
Ali Volkan Bilgili, Çiğdem Küçük, Harold M Van Es
Soil quality refers to the ability of soils to perform their functions well. The soils of the Harran Plain, Turkey, have been put into intensive crop production with the introduction of an irrigation scheme and become increasingly degraded due to unsustainable management and cropping systems that resulted in the loss of production potential. The goal of this study was to quantify the quality of common soil series in the Plain using soil quality indexes (SQI) and to compare SQIs of two long-term crop rotations, cotton and wheat-corn cultivation, and different soil types...
August 19, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28822485/game-theory-as-a-conceptual-framework-for-managing-insect-pests
#13
REVIEW
Joel S Brown, Kateřina Staňková
For over 100 years it has been recognized that insect pests evolve resistance to chemical pesticides. More recently, managers have advocated restrained use of pesticides, crop rotation, the use of multiple pesticides, and pesticide-free sanctuaries as resistance management practices. Game theory provides a conceptual framework for combining the resistance strategies of the insects and the control strategies of the pest manager into a unified conceptual and modelling framework. Game theory can contrast an ecologically enlightened application of pesticides with an evolutionarily enlightened one...
June 2017: Current Opinion in Insect Science
https://www.readbyqxmd.com/read/28815868/conceptual-considerations-on-exposure-assessment-goals-for-aquatic-pesticide-risks-at-eu-level
#14
Jos J T I Boesten
BACKGROUND: The assessment of the risk to aquatic organisms is an important aspect of pesticide registration. This assessment has to be based on well-defined exposure assessment goals (EAGs). However, these goals have not yet been defined for the EU authorisation procedure. RESULTS: The definition of an aquatic EAG consists of seven elements including the type of water body, the spatial dimension of this body, the spatial population of water bodies, the multi-year temporal population of concentrations for a single water body, and the space-time percentile combination to be selected from the spatio-temporal population of concentrations...
August 16, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28813093/where-is-sugarcane-cropping-expanding-in-the-brazilian-cerrado-and-why-a-case-study
#15
Murilo R DE Arruda, Ken E Giller, Maja Slingerland
Sugarcane growing area in Brazil sharply expanded between 2000 and 2010 due to the increasing world demand for sugar and ethanol. Since this expansion of sugarcane is said to occur in areas covered by degraded pastures, it is likely not threatening the environment or food production. In order to verify this assumption, we investigate at farm and field levels which types of land use sugarcane cropping replaced between 2005 and 2010 and the reasons for farmers shifting or not shifting to sugarcane, as a case study in two counties in the state of Goiás...
August 14, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28811504/complementarity-among-natural-enemies-enhances-pest-suppression
#16
Matteo Dainese, Gudrun Schneider, Jochen Krauss, Ingolf Steffan-Dewenter
Natural enemies have been shown to be effective agents for controlling insect pests in crops. However, it remains unclear how different natural enemy guilds contribute to the regulation of pests and how this might be modulated by landscape context. In a field exclusion experiment in oilseed rape (OSR), we found that parasitoids and ground-dwelling predators acted in a complementary way to suppress pollen beetles, suggesting that pest control by multiple enemies attacking a pest during different periods of its occurrence in the field improves biological control efficacy...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28810521/cropping-systems-affect-paddy-soil-organic-carbon-and-total-nitrogen-stocks-in-rice-garlic-and-rice-fava-systems-in-temperate-region-of-southern-china
#17
Tao Zhang, Anqiang Chen, Jian Liu, Hongbin Liu, Baokun Lei, Limei Zhai, Dan Zhang, Hongyuan Wang
The accumulation of soil organic carbon (SOC) in agricultural soils is critical to food security and climate change. However, there is still limited information on the dynamic trend of SOC sequestration following changes in cropping systems. Paddy soils, typical of temperate region of southern China, have a large potential for carbon (C) sequestration and nitrogen (N) fixation. It is of great importance to study the impacts of changes in cropping systems on stocks of SOC and total nitrogen (TN) in paddy soils...
December 31, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28806549/liming-impacts-on-soils-crops-and-biodiversity-in-the-uk-a-review
#18
REVIEW
J E Holland, A E Bennett, A C Newton, P J White, B M McKenzie, T S George, R J Pakeman, J S Bailey, D A Fornara, R C Hayes
Fertile soil is fundamental to our ability to achieve food security, but problems with soil degradation (such as acidification) are exacerbated by poor management. Consequently, there is a need to better understand management approaches that deliver multiple ecosystem services from agricultural land. There is global interest in sustainable soil management including the re-evaluation of existing management practices. Liming is a long established practice to ameliorate acidic soils and many liming-induced changes are well understood...
August 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28805279/extreme-weather-year-sequences-have-non-additive-effects-on-environmental-nitrogen-losses
#19
Javed Iqbal, Magdalena Necpalova, Sotirios V Archontoulis, Robert P Anex, Marie Bourguignon, Daryl Herzmann, David C Mitchell, John E Sawyer, Qing Zhu, Michael J Castellano
The frequency and intensity of extreme weather years, characterized by abnormal precipitation and temperature, are increasing. In isolation, these years have disproportionately large effects on environmental N losses. However, the sequence of extreme weather years (e.g., wet-dry vs. dry-wet) may affect cumulative N losses. We calibrated and validated the DAYCENT ecosystem process model with a comprehensive set of biogeophysical measurements from a corn-soybean rotation managed at three N fertilizer inputs with and without a winter cover crop in Iowa, USA...
August 14, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28799707/reversing-resistance-to-tembotrione-in-an-amaranthus-tuberculatus-var-rudis-population-from-nebraska-usa-with-cytochrome-p450-inhibitors
#20
Maxwel C Oliveira, Todd A Gaines, Franck E Dayan, Eric L Patterson, Amit J Jhala, Stevan Z Knezevic
A population of Amaranthus tuberculatus (var. rudis) was confirmed resistant to 4-hydroxyphenylpyruvate dioxygenase (HPPD)-inhibitor herbicides (mesotrione, tembotrione, and topramezone) in a seed corn/soybean rotation in Nebraska. Further investigation confirmed a non-target-site resistance mechanism in this population. The main objective of this study was to explore the role of cytochrome P450 inhibitors for restoring the efficacy of HPPD-inhibitor herbicides on the HPPD-inhibitor resistant A. tuberculatus population from Nebraska, USA (HPPD-R)...
August 11, 2017: Pest Management Science
keyword
keyword
46862
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"