leaf and soil Articles
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Probes reveal soil moisture’s many secrets
Soil moisture probes have been around for a long time, but they remain one of those mysterious agricultural instruments that only a small handful of people attempt to understand or use. “Part of the problem is people don’t trust the information,” says Ryan Hutchison of South Country Equipment in Saskatchewan. He was at Crop Connect 2019 in Winnipeg to give a presentation ...
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Precision viticulture technology a key to producing premium quality wines in changing climate [part 2]
In the first part of the article, we wrote about how precision viticulture technologies can help with choosing long-term and short-term cultivation strategies in order to adapt to climate changes, and named some of the precision viticulture technologies that exist on the market. Now let’s have a look at how and which precision viticulture technologies can help with specific vineyard ...
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Canada: fighting Cercospora in sugar beets - Case Study
Case Study Summary Application Decision Support System to fight Cercospora Leafspot in sugar beets Location Michigan and Ontario, Canada Products deployed A850 Telemetry Gateway (several) A753 addWAVE UHF A723 addIT UHF SEN-R Temperature and rel. humidity sensor RG Rain Gauge WET Leafwetness sensor Participating Organizations Michigan Sugar Corporation Parameters recorded Air temperature and ...
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Soil water reserve estimation and vegetation relationships in a Mediterranean sub-humid forested catchment
A simple water balance model was used to calculate soil water reserve in a Mediterranean forested catchment. The relationship between soil water reserve and leaf water potential and stem water content was analysed. The usefulness of these variables as plant water status indicators was tested. The analyses were developed with a seven-year-long database (2001–2007) in the case of soil water content ...
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Creeping bentgrass putting green turf responses to two summer irrigation practices: Rooting and soil temperature
Light and frequent (LF) and deep and infrequent (DI) irrigation are two common practices for golf course managers. Few studies have compared the effects of these two opposing irrigation practices on summer root performance in creeping bentgrass (Agrostis stolonifera L.). The objectives of this field study were to quantify summer root development and longevity in response to LF vs. DI irrigation ...
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Canopy gas exchange measurements of cotton in an open system
A portable, open transparent chamber system for measuring canopy gas exchanges was developed and tested. Differentials between incoming and outgoing atmospheric H2O and CO2 concentrations were used to calculate canopy transpiration (E) and net assimilation (A) at 10-s intervals using solenoid valve actuated sample lines connected to an infrared gas analyzer. A programmable data logger controlled ...
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Mercury Concentrations in Bicknell’s Thrush and Other Insectivorous Passerines in Montane Forests of Northeastern North America
Anthropogenic input of mercury (Hg) into the environment has elevated risk to fish and wildlife, particularly in northeastern North America. Investigations into the transfer and fate of Hg have focused on inhabitants of freshwater aquatic ecosystems, as these are the habitats at greatest risk for methylmercury (MeHg) biomagnification. Deviating from such an approach, we documented MeHg ...
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