A new method for evaluating damage caused by tenthredinids to Norway spruce stands is based on defoliation of the top whorls. A scale with four classes of defoliation was established that is easy to use. Defoliation can be displayed graphically on a grid
J. Holuša, O. Holuša
doaj +1 more source
Changes in oak (Quercus robur) photosynthesis after winter moth (Operophtera brumata) herbivory are not explained by changes in chemical or structural leaf traits [PDF]
Insect herbivores have the potential to change both physical and chemical traits of their host plant. Although the impacts of herbivores on their hosts have been widely studied, experiments assessing changes in multiple leaf traits or functions ...
Gripenberg, Sofia +5 more
core +1 more source
Effect of Planting Date, Clipping Height, and Cultivar on Forage and Grain Yield of Winter Wheat in Argentinean Pampas [PDF]
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
core +1 more source
The objective of this study was to evaluate the effect of post-grazing residual leaf blades (RLB) of different lengths on the morphogenic and structural characteristics of Urochloa brizantha ‘Piatã’ grazed upon by beef cattle.
Wagner Soares da Costa Junior +3 more
doaj +1 more source
Environmental Impact of Silicic Magmatism in Large Igneous Province Events
Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Scott E. Bryan
wiley +1 more source
A field experiment and a laboratory experiment were conducted in 2011-2012 to determine the effect of defoliation intensity and nitrogen rate on yield, yield components and seed germination of wheat (Triticum aestivum).
Heidari Hassan +3 more
doaj +1 more source
The study was carried out to evaluate defoliation patterns and to quantify leaf tissue flows in Alexandergrass (Urochloa plantaginea (Link.) Hitch) grazed by beef heifers receiving whole rice bran in three levels of supplementation (0, 0.5 and 1 % of ...
Paula de Oliveira Severo +5 more
doaj +1 more source
Interactive effect of herbivory and competition on the invasive plant Mikania micrantha. [PDF]
A considerable number of host-specific biological control agents fail to control invasive plants in the field, and exploring the mechanism underlying this phenomenon is important and helpful for the management of invasive plants.
Junmin Li +3 more
doaj +1 more source
Frequencies and intensities of defoliation in Aruana guineagrass swards: morphogenetic and structural characteristics [PDF]
The objective of this study was to evaluate the morphogenetic and structural characteristics of Aruana guineagrass pastures (Panicum maximum cv. Aruana) subjected to rotational stocking by sheep. The treatments corresponded to grazing when swards reached 95 or 98% of interception of incident light (LI) until post-grazing heights of 10 and 15cm and were
Zanini, Guilherme Doneda +2 more
openaire +4 more sources
The producer-herbivore interaction influences the dynamic and structure of ecosystems, altering biogeochemical functions and processes, such as carbon sequestration, nutrient cycling and plant succession. Improving understanding of factors that drive herbivore grazing decisions and describing the mechanistic link between plant functional traits and ...
Caram, Nicolas +6 more
openaire +1 more source

