Results 11 to 20 of about 1,870 (201)
Estimate of soybean defoliation via digital image processing in software [PDF]
Revista Ciência Agronômica, 2022 This study aimed to develop and validate the digital image processing software to quantify leaf coverage, employing the correlation of defoliation values and NDVI with various gradients of defoliation severity of the Asian soybean rust pathosystem.
Roger Nabeyama Michels +5 more
doaj +1 more source
Agrociencia Uruguay, 2021 Defoliation strategies determine sward canopy structure and affect forage accumulation and nutritive value. The objective of this study was to determine forage accumulation, morphological composition and nutritive value of inia Sepé subjected to ...
Diego Germán Giorello +2 more
doaj +1 more source
Effects of Severity of Defoliation on Root Functioning in Grasses [PDF]
Journal of Range Management, 1996 Grass shoots after defoliation can be supplied with the nitrogen required for regrowth by either root uptake or remobilization of stores. Whilst it is accepted that after a single defoliation inhibition of root uptake and remobilization from root occurs, it has not been established how the capability of roots to supply nitrogen by uptake and from ...
Barry Thornton, Peter Millard
openaire +1 more source
The effect of defoliation on the 3-isobutyl-2-methoxypyrazine biosynthesis in wine grapes
Horticultural Science, 2022 Field studies were conducted on Vitis vinifera cv. 'Cabernet Sauvignon' to evaluate the effects of the defoliation time (pre- and post-flowering and veraison) and severity on the 3-isobutyl-2-methoxypyrazine (IBMP) concentration and expression levels of ...
Yujuan Lei +5 more
doaj +1 more source
Does the type of silvicultural practice influence spruce budworm defoliation of seedlings?
Ecosphere, 2021 Spruce budworm (Choristoneura fumiferana (Clem)) is the main defoliator in the boreal forest of North America, and its outbreaks have major ecological and economic consequences and represent a challenge for forest management.
Janie Lavoie +3 more
doaj +1 more source
Effects of Rest following Defoliations on the Recovery of Several Range Species [PDF]
Journal of Range Management, 1977 Highlight: Seven range species, western wheatgrass (Agropyron smithii), blue grama (Bouteloua grucilis), fourwing saltbush (Atriplex cunescens), antelope bitterbrush (Purshia tridenfufu), fringed sagewort (Atiemisiafrigidu), scarlet globemallow (Sphuerukeu coccineu), and little rabbitbrush (Chrysothumnus vicidi&rus) were heavily defoliated once to ...
M. J. Trlica, M. Buwai, J. W. Menke
openaire +1 more source
Defoliation dynamics of Brachiaria brizantha pastures with distinct structural characteristics
Bioscience Journal, 2020 Although belonging to the same species, different Brachiaria brizantha varieties used for pasture vary significantly in their morphological structure.
Patrick Bezerra Fernandes +4 more
doaj +3 more sources
Plants, 2021 Grapevine canopy defoliation is a fundamentally important technique for the productivity and quality of grapes. Leaf removal is a pivotal operation on high-density vines which aims to improve air circulation, light exposure, and leaf gas exchange.
Eleonora Cataldo +4 more
doaj +1 more source
Root production in a subtropical pasture is mediated by cultivar identity and defoliation severity
Tropical Grasslands-Forrajes Tropicales, 2021 Grasslands occupy significant land area and account for a large proportion of the global soil carbon stocks, yet the direct effects of grazing and genotypic composition on relationships between shoot and root production are poorly resolved. This lack of understanding hinders the development of models for predicting root production in managed grasslands,
Chris H. Wilson +3 more
openaire +3 more sources
Variation of Stem Radius in Response to Defoliation in Boreal Conifers
Frontiers in Forests and Global Change, 2021 In the long term, defoliation strongly decreases tree growth and survival. Insect outbreaks are a typical cause of severe defoliation. Eastern spruce budworm (Choristoneura fumiferana Clem.) outbreaks are one of the most significant disturbances of Picea
Lorena Balducci +2 more
doaj +1 more source