Results 61 to 70 of about 4,667 (179)

Ecological genetics of Trifolium repens

open access: yes, 1965
The theory of Evolution by Natural Selection deals substantially with events now past, and with processes too slow for contemporary study. Experimental studies of evolution are possible, but are liable to the criticism that they deal with artificial, or at least extreme and atypical situations, involving rapid evolutionary change. Such criticism can be
openaire   +2 more sources

Ecological niches and biogeography of nitrogen‐fixing plants in Europe

open access: yesPlant Biology, Volume 28, Issue 5, Page 1349-1360, August 2026.
Despite sharing N fixation as a common trait, European legume and actinorhizal plant lineages occupy strikingly divergent ecological niches shaped by their evolutionary histories and physiological adaptations. Advanced symbiont control allows IRLC legumes to expand into northern, mesic regions, while non‐IRLC legumes are more common in Mediterranean ...
N. Fahs   +9 more
wiley   +1 more source

Safety and efficacy of a feed additive consisting of sodium nitrite for pigs, bovines, poultry, sheep, goats, rabbits and horses (ADDCON Europe GmbH)

open access: yesEFSA Journal, Volume 24, Issue 8, August 2026.
Abstract Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of sodium nitrite when used as a technological additive (functional group: silage additives) to improve the ensiling characteristics of all types of fresh plant material for pigs, bovines, poultry, sheep, goats, rabbits ...
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP)   +21 more
wiley   +1 more source

Valoración nutricional y emisión de gases de algunos recursos forrajeros del trópico de altura

open access: yesRevista de Ciencias Agrícolas, 2014
Se determinó la producción de gases (metano, AGVs) en algunos forrajes herbáceos, arbóreos y arbustivos de la región lechera del municipio de Pasto, en altitudes comprendidas entre 2600 a 3200 m.s.n.m.
Edmundo Apráez   +2 more
doaj   +1 more source

Weed hosts of phytoplasmas in the Czech Republic

open access: yesPlant Protection Science, 2002
The research was focused on wild plants that represent possible sources of phytoplasma infection. Thirteen species of wild herbaceous plants with symptoms of shoot proliferation, phyllody, virescence, sterility or yellowing have been collected from ...
P. Válová   +5 more
doaj   +1 more source

Trifolium repens var. pozzicola Briq.

open access: yes, 2018
Published as part of Jeanmonod, Daniel, 2018, Typification des noms de taxons corses de l'herbier Burnat (G-BU), pp.
openaire   +1 more source

Avaliação agronômica de progênies de policruzamento de trevo-branco em dois locais do Rio Grande do Sul Agronomic evaluation of white clover polycrosses progenies in two locations of Rio Grande do Sul

open access: yesRevista Brasileira de Zootecnia, 2011
O objetivo neste trabalho foi selecionar genótipos mais produtivos e persistentes de trevo-branco (Trifolium repens L.) por meio da avaliação agronômica de suas progênies.
Raquel Schneider   +6 more
doaj   +1 more source

Herbivore feeding and cyanogenesis in Trifolium repens L. [PDF]

open access: yesHeredity, 1973
Qualitative measures of herbivore feeding damage and cyanogenesis were obtained for 1000 Trifolium repens L. growing in unmanaged areas. An association between low herbivore feeding damage rating and cyanogenesis is indicated by the data. If only those plants given the highest feeding damage rating have significant reduction of vegetative growth and/or
openaire   +1 more source

Timpanismo espumoso em bovinos leiteiros em pastagens de Trifolium spp. (Leg.Caesalpinoideae) Leguminous bloat in dairy cattle on Trifolium spp. pastures

open access: yesPesquisa Veterinária Brasileira, 2009
O pastejo de plantas leguminosas que provocam fermentação excessiva pode causar surtos de timpanismo e mortes em ruminantes. Em uma propriedade no município de São Francisco de Paula, Rio Grande do Sul, oito bovinos de um total de 66 morreram subitamente,
André Gustavo Cabrera Dalto   +6 more
doaj   +1 more source

Dinâmica da composição botânica da dieta selecionada por bovinos em uma pastagem cultivada em área de várzea = Dynamic of the botanical composition of the diet selected by cattle grazing on a lowland cultivated pasture

open access: yesActa Scientiarum: Animal Sciences, 2006
Três hectares de várzea, situados no Campus da Universidade Federal de Santa Maria, Estado do Rio Grande do Sul (Brasil), foram cultivados com Lolium multiflorum Lam.
Jumaida Maria Rosito   +4 more
doaj  

Home - About - Disclaimer - Privacy