Results 21 to 30 of about 15,556 (212)

Effect of photoperiod and host distribution on the horizontal transmission of Isaria fumosorosea (Hypocreales: Cordycipitaceae) in greenhouse whitefly assessed using a novel model bioassay [PDF]

open access: yes, 2010
A model bioassay was used to evaluate the epizootic potential and determine the horizontal transmission efficiency of Isaria fumosorosea Trinidadian strains against Trialeurodes vaporariorum pharate adults under optimum conditions (25±0.5°C, ~100% RH ...
Antonious G.F.   +22 more
core   +1 more source

Plant Allelochemicals as Sources of Insecticides [PDF]

open access: yesInsects, 2021
In this review, we describe the role of plant-derived biochemicals that are toxic to insect pests. Biotic stress in plants caused by insect pests is one of the most significant problems, leading to yield losses. Synthetic pesticides still play a significant role in crop protection. However, the environmental side effects and health issues caused by the
Ivana Tlak Gajger, Showket Ahmad Dar
openaire   +4 more sources

Potent endogenous allelopathic compounds in Lepidium sativum seed exudate: effects on epidermal cell growth in Amaranthus caudatus seedlings [PDF]

open access: yes, 2012
Many plants exude allelochemicals – compounds that affect the growth of neighbouring plants. This study reports further studies of the reported effect of cress (Lepidium sativum) seed(ling) exudates on seedling growth in Amaranthus caudatus and Lactuca ...
Fry, Stephen, Iqbal, Amjad
core   +2 more sources

Weeds Cause Losses in Field Crops through Allelopathy

open access: yesNotulae Scientia Biologicae, 2016
A large number of weeds are known to be associated with crops and causing economic losses. Weeds interfere with crops through competition and allelopathy.
Ali ZOHAIB   +2 more
doaj   +1 more source

Allelopathic interactions between the macrophyte Egeria densa and plankton (alga, Scenedesmus acutus and cladocerans, Simocephalus spp.): a laboratory study

open access: yesJournal of Limnology, 2016
Allelopathic interactions between macrophytes and zooplankton are important to understand the plankton dynamics in shallow waterbodies. Egeria densa is a native, perennial, submerged macrophyte in the tropical and subtropical zones of South America.
Cristian A. Espinosa-Rodríguez   +5 more
doaj   +1 more source

Toxicity and sublethal effects of two plant allelochemicals on the demographical traits of cotton aphid, Aphis gossypii Glover (Hemiptera: Aphididae).

open access: yesPLoS ONE, 2019
Plant allelochemicals are a group of secondary metabolites produced by plants to defend against herbivore. The mortality of two plant allelochemicals (tannic acid and gossypol) on the cotton aphid, Aphis gossypii Glover (Hemiptera: Aphididae), were ...
Kangsheng Ma   +5 more
doaj   +1 more source

Differences in allelopathic effect of tree of heaven root extracts and isolated ailanthone on test-species [PDF]

open access: yesJournal of Central European Agriculture, 2021
The objective of this paper was to analyse allelopathic effect of 3 different aqueous solutions from tree of heaven’s (Ailanthus altissima (Mill.) Swingle) root extract and their dilutions on common wheat (Triticum aestivum L.), pigweed (Amaranthus ...
Maja Novak   +2 more
doaj   +1 more source

Phylloplane Sterilization With Bleach Does Not Reduce Btk Toxicity for \u3ci\u3ePapilio Glaucus\u3c/i\u3e Larvae (Lepidoptera: Papilionidae) [PDF]

open access: yes, 2018
Neonate tiger swallowtail larvae (Papilio glaucus) were used to bioassay the effects of Btk (Bacillus thuringiensis var. kurstaki) at 4 doses (0.268, 0.034, 0.008, and 0.004 BIU per cm leaf surface) with an untreated control.
Haas, Laura, Scriber, J. Mark
core   +2 more sources

Potential phytotoxic and shading effects of invasive Fallopia (Polygonaceae) taxa on the germination of dominant native species [PDF]

open access: yes, 2011
Two species of the genus Fallopia (F. sachalinensis, F. japonica, Polygonaceae) native to Asia, and their hybrid (F. ×bohemica), belong to the most noxious plant invaders in Europe.
Jarošík, Vojtěch   +3 more
core   +3 more sources

Evaluation of Phytochemicals and Bioactive Properties in Mangrove Associate Suaeda monoica Forssk. ex J.F.Gmel. of Indian Sundarbans

open access: yesFrontiers in Pharmacology, 2021
Suaeda monoica Forssk. ex J.F.Gmel. (Amaranthaceae), a mangrove associate and ethno-medicinal herb of Indian Sundarbans, was investigated as a promising source of bioactive compounds. Various polar and nonpolar solvent extracts of the leaf and root-shoot
Madhumita Roy, Tapan K. Dutta
doaj   +1 more source

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