canopy closure Articles
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Canopy dynamics and human caused disturbance on a semi-arid landscape in the Rocky Mountains, USA
Invasion of grasslands by woody plants has been identified as a key indicator of changes in ecosystem structure and function in arid and semi-arid rangelands throughout the world. We investigated changes in the balance between woody and herbaceous components of a semi-arid landscape in western Colorado (USA) using historical aerial photography. Aerial photographs from 1937, 1965–67, and 1994 were ...
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Variability in Leaf Area and Stemwood Increment Along a 300-year Lodgepole Pine Chronosequence
Large disturbances such as the 1988 Yellowstone fires produce considerable spatial heterogeneity in ecosystem processes across landscapes, in part by affecting vegetation structure. However, the persistence of this heterogeneity with time since disturbance, and thus the role of large disturbances in shaping the heterogeneity of ecosystem processes over large spatial and temporal scales, remains ...
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Solid and skip-row spacings for irrigated and nonirrigated upland cotton
Producers of upland cotton (Gossypium hirsutum L.) are interested in alternative row spacings and planting patterns to improve productivity. We conducted factorial experiments for 3 yr in adjacent irrigated and nonirrigated fields at Milan, TN, of cotton grown in 25-, 76- and 102-cm rows, each planted in a solid and 2 x 1 skip-row pattern. Narrower rows and solid plantings tended to close canopy ...
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Seasonal slug pressure warning – crops at greater risk
Crops face a greater risk of slug damage and if left untreated, this can become extremely expensive for farmers, and is estimated to cost the potato industry up to £53 million per year*, as any slug damage reduces saleability and ultimately profitability of a crop. Slugs are most damaging to potatoes during the early stages of tuber bulking, which is starting to happen now. So make sure ...
By Certis UK
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Corn morphology, mass, and grain yield as affected by early-season red: far-red light environments
The spatial arrangement among plants affects both vegetative and reproductive meristem development. More axillary meristems develop at lower plant densities, which are associated with relatively high red:far-red light ratios (R:FRs; 645:735 nm). However, little is known about the effect of R:FR on corn (Zea mays L.) productivity. We conducted field research to determine the effect of early-season ...
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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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Proactive approach to slug control recommended to potato growers
If left untreated, slugs can cost the potato industry £53 million each year. With predictions of a high pressure slug season ahead, and the potential damage these pests can do to a crop both physically and financially, Robert Boothman, commercial director of Boothmans Agriculture, explains how to keep one step ahead of the pest. “The milder, wet winter and lack of ground frosts ...
By Certis UK
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Avocados in Precision Agriculture
At Pollen Systems, we are always excited to apply our PrecisionView approach to the crops we know and love. One fruit we keep returning to at work (and in our favorite recipes) is the beloved avocado. Adapted to rainforests by nature, avocados grow vigorously and will develop a dense canopy in a relatively short time. This growth habit is a challenge unique to cultivating avocados, as each tree ...
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