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Precision agriculture

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https://www.readbyqxmd.com/read/29451878/control-fast-or-control-smart-when-should-invading-pathogens-be-controlled
#1
Robin N Thompson, Christopher A Gilligan, Nik J Cunniffe
The intuitive response to an invading pathogen is to start disease management as rapidly as possible, since this would be expected to minimise the future impacts of disease. However, since more spread data become available as an outbreak unfolds, processes underpinning pathogen transmission can almost always be characterised more precisely later in epidemics. This allows the future progression of any outbreak to be forecast more accurately, and so enables control interventions to be targeted more precisely...
February 16, 2018: PLoS Computational Biology
https://www.readbyqxmd.com/read/29443919/a-novel-strategy-for-very-large-scale-cash-crop-mapping-in-the-context-of-weather-related-risk-assessment-combining-global-satellite-multispectral-datasets-environmental-constraints-and-in-situ-acquisition-of-geospatial-data
#2
Fabio Dell'Acqua, Gianni Cristian Iannelli, Marco A Torres, Mario L V Martina
Cash crops are agricultural crops intended to be sold for profit as opposed to subsistence crops, meant to support the producer, or to support livestock. Since cash crops are intended for future sale, they translate into large financial value when considered on a wide geographical scale, so their production directly involves financial risk. At a national level, extreme weather events including destructive rain or hail, as well as drought, can have a significant impact on the overall economic balance. It is thus important to map such crops in order to set up insurance and mitigation strategies...
February 14, 2018: Sensors
https://www.readbyqxmd.com/read/29426222/gemas-cns-concentrations-and-c-n-ratios-in-european-agricultural-soil
#3
Jörg Matschullat, Clemens Reimann, Manfred Birke, Debora Dos Santos Carvalho
A reliable overview of measured concentrations of TC, TN and TS, TOC/TN ratios, and their regional distribution patterns in agricultural soil at the continental scale and based on measured data has been missing - despite much previous work on local and the European scales. Detection and mapping of natural (ambient) background element concentrations and variability in Europe was the focus of this work. While total C and S data had been presented in the GEMAS atlas already, this work delivers more precise (lower limit of determination) and fully quantitative data, and for the first time high-quality TN data...
February 5, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29417993/related-herbivore-species-show-similar-temporal-dynamics
#4
F G Blanchet, T Roslin, M T Kimura, T Huotari, R Kaartinen, S Gripenberg, A J M Tack
1.Within natural communities, different taxa display different dynamics in time. Why this is the case we do not fully know. This thwarts our ability to predict changes in community structure, which is important for both the conservation of rare species in natural communities and for the prediction of pest outbreaks in agriculture. 2.Species sharing phylogeny, natural enemies and/or life history traits have been hypothesized to share similar temporal dynamics. We operationalized these concepts into testing whether feeding guild, voltinism, similarity in parasitoid community, and/or phylogenetic relatedness explained similarities in temporal dynamics among herbivorous community members...
February 8, 2018: Journal of Animal Ecology
https://www.readbyqxmd.com/read/29408079/quantitative-evaluation-of-legacy-phosphorus-and-its-spatial-distribution
#5
Hezhen Lou, Changsen Zhao, Shengtian Yang, Liuhua Shi, Yue Wang, Xiaoyu Ren, Juan Bai
A phosphorus resource crisis threatens the security of global crop production, especially in developing countries like China and Brazil. Legacy phosphorus (legacy-P), which is left behind in agricultural soil by over-fertilization, can help address this issue as a new resource in the soil phosphorus pool. However, issues involved with calculating and defining the spatial distribution of legacy-P hinder its future utilization. To resolve these issues, this study applied remote sensing and ecohydrological modeling to precisely quantify legacy-P and define its spatial distribution in China's Sanjiang Plain from 2000 to 2014...
January 31, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29393921/specim-iq-evaluation-of-a-new-miniaturized-handheld-hyperspectral-camera-and-its-application-for-plant-phenotyping-and-disease-detection
#6
Jan Behmann, Kelvin Acebron, Dzhaner Emin, Simon Bennertz, Shizue Matsubara, Stefan Thomas, David Bohnenkamp, Matheus T Kuska, Jouni Jussila, Harri Salo, Anne-Katrin Mahlein, Uwe Rascher
Hyperspectral imaging sensors are promising tools for monitoring crop plants or vegetation in different environments. Information on physiology, architecture or biochemistry of plants can be assessed non-invasively and on different scales. For instance, hyperspectral sensors are implemented for stress detection in plant phenotyping processes or in precision agriculture. Up to date, a variety of non-imaging and imaging hyperspectral sensors is available. The measuring process and the handling of most of these sensors is rather complex...
February 2, 2018: Sensors
https://www.readbyqxmd.com/read/29391044/deeparg-a-deep-learning-approach-for-predicting-antibiotic-resistance-genes-from-metagenomic-data
#7
Gustavo Arango-Argoty, Emily Garner, Amy Pruden, Lenwood S Heath, Peter Vikesland, Liqing Zhang
BACKGROUND: Growing concerns about increasing rates of antibiotic resistance call for expanded and comprehensive global monitoring. Advancing methods for monitoring of environmental media (e.g., wastewater, agricultural waste, food, and water) is especially needed for identifying potential resources of novel antibiotic resistance genes (ARGs), hot spots for gene exchange, and as pathways for the spread of ARGs and human exposure. Next-generation sequencing now enables direct access and profiling of the total metagenomic DNA pool, where ARGs are typically identified or predicted based on the "best hits" of sequence searches against existing databases...
February 1, 2018: Microbiome
https://www.readbyqxmd.com/read/29385611/machine-learning-and-data-mining-advance-predictive-big-data-analysis-in-precision-animal-agriculture
#8
G Morota, R V Ventura, F F Silva, M Koyama, S C Fernando
Precision animal agriculture is poised to rise to prominence in the livestock enterprise in the domains of management, production, welfare, sustainability, health surveillance, and environmental footprint. Considerable progress has been made in the use of tools to routinely monitor and collect information from animals and farms in a less laborious manner than before. These efforts have enabled the animal sciences to embark on information technology-driven discoveries to improve animal agriculture. However, the growing amount and complexity of data generated by fully automated, high-throughput data recording or phenotyping platforms, including digital images, sensor and sound data, unmanned systems, and information obtained from real-time non-invasive computer vision, pose challenges to the successful implementation of precision animal agriculture...
January 29, 2018: Journal of Animal Science
https://www.readbyqxmd.com/read/29382177/research-on-the-effects-of-drying-temperature-on-nitrogen-detection-of-different-soil-types-by-near-infrared-sensors
#9
Pengcheng Nie, Tao Dong, Yong He, Shupei Xiao
Soil is a complicated system whose components and mechanisms are complex and difficult to be fully excavated and comprehended. Nitrogen is the key parameter supporting plant growth and development, and is the material basis of plant growth as well. An accurate grasp of soil nitrogen information is the premise of scientific fertilization in precision agriculture, where near infrared sensors are widely used for rapid detection of nutrients in soil. However, soil texture, soil moisture content and drying temperature all affect soil nitrogen detection using near infrared sensors...
January 29, 2018: Sensors
https://www.readbyqxmd.com/read/29354871/assessing-uncertainty-in-annual-nitrogen-phosphorus-and-suspended-sediment-load-estimates-in-three-agricultural-streams-using-a-21-year-dataset
#10
Patrick T Kelly, Michael J Vanni, William H Renwick
Accurate estimation of constituent loads is important for studies of ecosystem mass balance or total maximum daily loads. In response, there has been an effort to develop methods to increase both accuracy and precision of constituent load estimates. The relationship between constituent concentration and stream discharge is often complicated, potentially leading to high uncertainty in load estimates for certain constituents, especially at longer-term (annual) scales. We used the loadflex R package to compare uncertainty in annual load estimates from concentration vs...
January 22, 2018: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29351296/hybrid-genome-assembly-and-annotation-of-paenibacillus-pasadenensis-strain-r16-reveals-insights-on-endophytic-life-style-and-antifungal-activity
#11
Alessandro Passera, Luca Marcolungo, Paola Casati, Milena Brasca, Fabio Quaglino, Chiara Cantaloni, Massimo Delledonne
Bacteria of the Paenibacillus genus are becoming important in many fields of science, including agriculture, for their positive effects on the health of plants. However, there are little information available on this genus compared to other bacteria (such as Bacillus or Pseudomonas), especially when considering genomic information. Sequencing the genomes of plant-beneficial bacteria is a crucial step to identify the genetic elements underlying the adaptation to life inside a plant host and, in particular, which of these features determine the differences between a helpful microorganism and a pathogenic one...
2018: PloS One
https://www.readbyqxmd.com/read/29343882/can-productivity-and-profitability-be-enhanced-in-intensively-managed-cereal-systems-while-reducing-the-environmental-footprint-of-production-assessing-sustainable-intensification-options-in-the-breadbasket-of-india
#12
Virender Kumar, Hanuman S Jat, Parbodh C Sharma, Balwinder-Singh, Mahesh K Gathala, Ram K Malik, Baldev R Kamboj, Arvind K Yadav, Jagdish K Ladha, Anitha Raman, D K Sharma, Andrew McDonald
In the most productive area of the Indo-Gangetic Plains in Northwest India where high yields of rice and wheat are commonplace, a medium-term cropping system trial was conducted in Haryana State. The goal of the study was to identify integrated management options for further improving productivity and profitability while rationalizing resource use and reducing environmental externalities (i.e., "sustainable intensification", SI) by drawing on the principles of diversification, precision management, and conservation agriculture...
January 15, 2018: Agriculture, Ecosystems & Environment
https://www.readbyqxmd.com/read/29323202/genome-based-classification-of-micromonosporae-with-a-focus-on-their-biotechnological-and-ecological-potential
#13
Lorena Carro, Imen Nouioui, Vartul Sangal, Jan P Meier-Kolthoff, Martha E Trujillo, Maria Del Carmen Montero-Calasanz, Nevzat Sahin, Darren Lee Smith, Kristi E Kim, Paul Peluso, Shweta Deshpande, Tanja Woyke, Nicole Shapiro, Nikos C Kyrpides, Hans-Peter Klenk, Markus Göker, Michael Goodfellow
There is a need to clarify relationships within the actinobacterial genus Micromonospora, the type genus of the family Micromonosporaceae, given its biotechnological and ecological importance. Here, draft genomes of 40 Micromonospora type strains and two non-type strains are made available through the Genomic Encyclopedia of Bacteria and Archaea project and used to generate a phylogenomic tree which showed they could be assigned to well supported phyletic lines that were not evident in corresponding trees based on single and concatenated sequences of conserved genes...
January 11, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29295536/a-low-cost-approach-to-automatically-obtain-accurate-3d-models-of-woody-crops
#14
José M Bengochea-Guevara, Dionisio Andújar, Francisco L Sanchez-Sardana, Karla Cantuña, Angela Ribeiro
Crop monitoring is an essential practice within the field of precision agriculture since it is based on observing, measuring and properly responding to inter- and intra-field variability. In particular, "on ground crop inspection" potentially allows early detection of certain crop problems or precision treatment to be carried out simultaneously with pest detection. "On ground monitoring" is also of great interest for woody crops. This paper explores the development of a low-cost crop monitoring system that can automatically create accurate 3D models (clouds of coloured points) of woody crop rows...
December 24, 2017: Sensors
https://www.readbyqxmd.com/read/29281669/late-bronze-age-climate-change-and-the-destruction-of-the-mycenaean-palace-of-nestor-at-pylos
#15
Martin Finné, Karin Holmgren, Chuan-Chou Shen, Hsun-Ming Hu, Meighan Boyd, Sharon Stocker
This paper offers new high-resolution oxygen and carbon isotope data from Stalagmite S1 from Mavri Trypa Cave, SW Peloponnese. Our data provide the climate background to the destruction of the nearby Mycenaean Palace of Nestor at Pylos at the transition from Late Helladic (LH) IIIB to LH IIIC, ~3150-3130 years before present (before AD 1950, hereafter yrs BP) and the subsequent period. S1 is dated by 24 U-Th dates with an averaged precision of ±26 yrs (2σ), providing one of the most robust paleoclimate records from the eastern Mediterranean for the end of the Late Bronze Age (LBA)...
2017: PloS One
https://www.readbyqxmd.com/read/29273051/a-role-for-b-cells-in-organic-dust-induced-lung-inflammation
#16
Jill A Poole, Ted R Mikuls, Michael J Duryee, Kristi J Warren, Todd A Wyatt, Amy J Nelson, Debra J Romberger, William W West, Geoffrey M Thiele
BACKGROUND: Agriculture organic dust exposures induce lung disease with lymphoid aggregates comprised of both T and B cells. The precise role of B cells in mediating lung inflammation is unknown, yet might be relevant given the emerging role of B cells in obstructive pulmonary disease and associated autoimmunity. METHODS: Using an established animal model, C57BL/6 wild-type (WT) and B-cell receptor (BCR) knock-out (KO) mice were repetitively treated with intranasal inhalation of swine confinement organic dust extract (ODE) daily for 3 weeks and lavage fluid, lung tissues, and serum were collected...
December 22, 2017: Respiratory Research
https://www.readbyqxmd.com/read/29259528/%C3%A2-yeast-still-a-beast-diverse-applications-of-crispr-cas-editing-technology-in-s-cerevisiae%C3%A2
#17
REVIEW
Rachael M Giersch, Gregory C Finnigan
The recent discovery and use of CRISPR/Cas9 gene editing technology has provided new opportunities for scientific research in many fields of study including agriculture, genetic disorders, human disease, biotechnology, and basic biological research. The ability to precisely target DNA sequences and either remove, modify, or replace genetic sequences provides a new level of control in nearly all eukaryotic organisms, including budding yeast. Given the many discoveries made in Saccharomyces cerevisiae over the past decades spanning genetics, cell biology, and biochemistry, as well as the development of new technologies that have allowed high throughput screening, robotic automation, and a platform for synthetic genome engineering, the yeast community has also started to recognize the utility and complementary nature of CRISPR-based methodologies...
December 2017: Yale Journal of Biology and Medicine
https://www.readbyqxmd.com/read/29250878/precise-editing-of-clavata-genes-in-brassica-napus-l-regulates-multilocular-silique-development
#18
Yang Yang, Kaiyu Zhu, Huailin Li, Shaoqing Han, Qingwei Meng, Shahid Ullah Khan, Chuchuan Fan, Kabin Xie, Yongming Zhou
Multilocular silique is a desirable agricultural trait with great potential for the development of high-yield varieties of Brassica. To date, no spontaneous or induced multilocular mutants have been reported in Brassica napus, which likely reflects its allotetraploid nature and the extremely low probability of the simultaneous random mutagenesis of multiple gene copies with functional redundancy. Here, we present evidence for the efficient knockout of rapeseed homologues of CLAVATA3 (CLV3) for a secreted peptide and its related receptors CLV1 and CLV2 in the CLV signalling pathway using the CRISPR/Cas9 system and achieved stable transmission of the mutations across three generations...
December 18, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29237851/micrornas-regulate-the-sesquiterpenoid-hormonal-pathway-in-drosophila-and-other-arthropods
#19
Zhe Qu, William G Bendena, Wenyan Nong, Kenneth W Siggens, Fernando G Noriega, Zhen-Peng Kai, Yang-Yang Zang, Alex C Koon, Ho Yin Edwin Chan, Ting Fung Chan, Ka Hou Chu, Hon Ming Lam, Michael Akam, Stephen S Tobe, Jerome Ho Lam Hui
Arthropods comprise the majority of all described animal species, and understanding their evolution is a central question in biology. Their developmental processes are under the precise control of distinct hormonal regulators, including the sesquiterpenoids juvenile hormone (JH) and methyl farnesoate. The control of the synthesis and mode of action of these hormones played important roles in the evolution of arthropods and their adaptation to diverse habitats. However, the precise roles of non-coding RNAs, such as microRNAs (miRNAs), controlling arthropod hormonal pathways are unknown...
December 20, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29237394/prediction-of-mirna-and-identification-of-their-relationship-network-related-to-late-blight-disease-of-potato
#20
Mohammad Samir Farooqi, Animesh Kumar, D C Mishra, Sanjeev Kumar, Anil Rai, K K Chaturvedi, S B Lal, Anu Sharma
Late blight, is one of the most serious disease in potato caused by Phytophthora infestans. In spite of adopting so many agricultural practices this disease is still a threat for potato. Recent studies showed that microRNA (miRNA), an important gene expression regulator, plays a very important role in host-pathogen interaction by silencing genes either by destructing or blocking of translation of mRNA. To date only few miRNA have been discovered which are related to late blight disease of potato during host pathogen interaction...
December 13, 2017: MicroRNA
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