Detection of Annual Spruce Budworm Defoliation and Severity Classification Using Landsat Imagery
Forests, 2018 Spruce budworm (SBW) is the most destructive forest pest in eastern forests of North America. Mapping annual current-year SBW defoliation is challenging because of the large landscape scale of infestations, high temporal/spatial variability, and the ...
Parinaz Rahimzadeh-Bajgiran +3 more
semanticscholar +1 more source
Defoliation-induced changes in foliage quality may trigger broad-scale insect outbreaks
Communications Biology, 2022 Top-down effects, like predation, are drivers of insect outbreaks, but bottom-up effects, like host nutritional quality, also influence outbreaks and could in turn be altered by insect-caused defoliation.
L. De Grandpré +9 more
semanticscholar +1 more source
Senescent trees stabilize aboveground wood net primary production immediately after disturbance [PDF]
, 2020 In the United States, forests sequester 17% of national carbon (C) emissions annually (UGCRP, 2018), however shifting forest disturbances threaten the stability of this essential C sink.
Grigri, Maxim S
core +2 more sources
Using longitudinal survival probabilities to test field vigour estimates in sugar maple (Acer saccharum Marsh.) [PDF]
, 2008 Tree mortality is a major force driving forest dynamics. To foresters, however, tree mortality is often considered a loss in productivity. To reduce tree mortality, silvicultural systems, such as selection cuts, aim at removing trees that are more likely
Bigler +59 more
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Forests, 2021 We quantified the extent and severity of Asian gypsy moth (Lymantria dispar) defoliation in Wonju, Korea, from May to early June in 2020. Landsat images were collected covering Wonju and the surrounding area in June from 2017 to 2020.
Won Il Choi +4 more
semanticscholar +1 more source
Frontiers in Plant Science, 2021 The grapevine (Vitis vinifera L.) is managed to balance the ratio of leaf area (source) to fruit mass (sink). Over cropping in the grapevine may reveal itself as spontaneous fruit abortion, delayed ripening, or as alternate bearing.
Johann Martínez-Lüscher +1 more
doaj +1 more source
Effect of Planting Date, Clipping Height, and Cultivar on Forage and Grain Yield of Winter Wheat in Argentinean Pampas [PDF]
, 2006 In Argentinean Pampas, new wheat (Triticum aestivum L.) cultivars are routinely introduced to farmers for dual-purpose production. The objective of this study was to evaluate the effect of planting date, clipping height on forage, and grain yield for ...
Arroquy, Jose Ignacio +3 more
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OENO OneSunburn on grapes has emerged as an economic concern in recent decades. The phenomenon can be attributed to climatic changes, characterised by elevated air temperatures and intense solar radiation, leading to increased crop failures as well as quality ...
Jonas Waber +15 more
doaj +1 more source
A comparative study of defoliation in Holcus lantanus and Lolium perenne pastures grazed by sheep : a thesis presented in partial fulfilment of the requirements for the degree of Master in Agriculture at Massey University [PDF]
, 1993 Objectives of this study were (i) to extend limited information on the assessment of relative defoliation of grass and legume components in mixed ryegrass/white clover and yorkshire fog/white clover pastures, (ii) to test whether the balance of ...
Hu, Yankai
core
Screen house and field resistance of taro cultivars to taro leaf blight disease (Phytophtora colocasiae) [PDF]
, 2016 Article PurchasedIntroduction: Taro leaf blight disease cause by Phytophtora colocasiae has become an economic disease in Cocoyam growing regions of Cameroon.
Fokunang, C.N. +4 more
core +1 more source