Results 21 to 30 of about 1,031 (163)

Evaluation of morphologic and genetic diversity of Pulicaria gnaphalodes populations collected from south-east of Iran [PDF]

open access: yesمجله بیوتکنولوژی کشاورزی, 2023
ObjectivePulicaria gnaphalodes (Vent.) Boiss, known as Kak-Kosh, is a desert-adapted species that has been widely distributed throughout Iran. This plant is a source of flavonoids and terpenes that are used in traditional medicine.
Zahra Hassanabadi   +4 more
doaj   +1 more source

Determination of photosynthetic pigments in fleabane biotypes susceptible and resistant to the Herbicide Glyphosate [PDF]

open access: yesPlanta Daninha, 2014
Chlorophylls and carotenoids are the main photosynthetic pigment in plants. In the weeds, the greatest amount of photosynthetic pigments can result in high competitiveness of the species.
T.E. Kaspary   +4 more
doaj   +2 more sources

Herbicide Resistance in Summer Annual Weeds of Australia’s Northern Grains Region

open access: yesAgronomy, 2023
For more than two decades, glyphosate has been relied on to control summer annual weeds in fallow systems in Australia’s northern grains region. With numerous cases of glyphosate resistance reported in weed species collected from this region, there are ...
John C. Broster   +4 more
doaj   +1 more source

Widespread Occurrence of Glyphosate-Resistant Hairy Fleabane (Erigeron bonariensis L.) in Colombia and Weed Control Alternatives

open access: yesAgronomy, 2023
Glyphosate, the most applied herbicide globally, offers effective non-selective and post-emergent weed control. Evolution of herbicide-resistant weeds is commonly associated with the recurrent application of herbicides with the same mode of action ...
Edwin Granados, Ian Zelaya, Guido Plaza
doaj   +1 more source

Application time affects synthetic auxins herbicides in tank-mixture with paraquat on hairy fleabane control

open access: yesRevista Ceres, 2021
Conyza sp. was the first glyphosate-resistant weed in Brazil’s soybean crop. Synthetic auxin herbicides followed by paraquat has improved the hairy fleabane control, and time of day of herbicide application can affect the control efficacy.
Diecson Ruy Orsolin da Silva   +3 more
doaj   +1 more source

Conyza spp.: From Ugly Duckling to Agriculture's Fittest Swan - Brief Review [PDF]

open access: yesPlanta Daninha, 2016
Conyza spp. are widely responsible for yield losses in agriculture due to its worldwide occurrence, resistance to herbicides and other traits which turn these species into first grade weeds.
G. CONCENÇO, S.E. CONCENÇO
doaj   +1 more source

Biology and Management of Horseweed and Hairy Fleabane in California [PDF]

open access: yes, 2008
Author(s): Shrestha, Anil; Hembree, Kurt; Wright, Steven | Abstract: Horseweed and hairy fleabane are showing increased resistance to chemical controls, including glyphosate. By learning about their biology and other control alternatives, you can do a better job of keeping on top of this pest problem.
Shrestha, Anil   +2 more
openaire   +3 more sources

Development stages horseweed in soybeans competition

open access: yesArquivos do Instituto Biológico, 2018
: The objective of this study was to evaluate the relative competitive ability of soybean with different development stages of hairy fleabane. Two experiments were conducted in greenhouse, in a completely randomized design.
Diecson Ruy Orsolin da Silva   +2 more
doaj   +1 more source

Inheritance of apomeiosis (diplospory) in fleabanes (Erigeron, Asteraceae) [PDF]

open access: yesHeredity, 2004
Unreduced egg formation (apomeiosis) in flowering plants is rare except when it is coupled with parthenogenesis to yield gametophytic apomixis via apospory or diplospory. Results from genetic mapping studies in diverse apomictic taxa suggest that apomeiosis and parthenogenesis are genetically linked, a finding that is compatible with the conventional ...
openaire   +2 more sources

Germinação das sementes de Conyza canadensis e Conyza bonariensis em função da qualidade de luz Germination of Conyza canadensis and Conyza bonariensis seeds as a function of light quality

open access: yesPlanta Daninha, 2011
Conyza canadensis e C. bonariensis são espécies invasoras cujo relato tem sido cada vez mais frequente, dada sua capacidade de desenvolvimento em áreas com palhada, sob sistema de semeadura direta (SSD).
O.M Yamashita   +2 more
doaj   +1 more source

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