Search results for "Echinochloa"

Herbicidal activity of Thymbra capitata (L.) Cav. essential oil

2020

The bioherbicidal potential of Thymbra capitata (l.) Cav. essential oil (EO) and its main compound carvacrol was investigated. In in vitro assays, the EO blocked the germination and seedling growth of Erigeron canadensis L., Sonchus oleraceus (l.) L., and Chenopodium album L. at 0.125 &micro

Potential Effects of Essential Oils Extracted from Mediterranean Aromatic Plants on Target Weeds and Soil Microorganisms

2020

Essential oils (EOs), extracted from aromatic plants, have been proposed as candidates to develop natural herbicides. This study aimed to evaluate the herbicidal potential of Thymbra capitata (L.) Cav., Mentha &times

JENIS-JENIS GULMA PADA PADI SAWAH DI DAERAH TRANSMIGRASI PRAFI, MANOKWARI

2008

<em>Several weed species were observed in the rice fields of the transmigration area Prafi SP 2 during April 2006 by the State University of Papua.  The weeds were classified into three groups according to their morphology characteristics, and into four groups according to their habitat.  The weeds were preferred by the rice pests as host plant. Few weeds were host for the rice fields such as Echinochloa crusgalli, Echinochloa glaberescens and Pennisetum purpureum</em>

Herbicidal activity of essential oils extracted from different Mediterranean species against Echinochloa crus galli

Weed infestation in agricultural fields can cause huge economic losses and low-quality crop yields. Echinochloa crus-galli (L.) P.Beauv. (barnyardgrass) is one of the greatest yields limiting weeds in rice cultivation systems. It is a cosmopolitan weed in both temperate and tropical regions and is reported as a weed in 36 different crops in 61 countries. The success of this weed may be attributed to the production of large numbers of small, easily dispersed seeds per plant, possession of seed dormancy, rapid development and ability to flower under a wide range of photoperiods, and relative resistance of mature plants to herbicide sprays. Thus, the best way to control barnyardgrass in an env…

Résistances aux herbicides : panics dans le riz !

2014

SPE GEAPSI CT1; Des difficultés de désherbage à l’aide d’herbicides inhibiteurs de l’ALS (groupe B du HRAC) ayant été notées en riziculture, en Camargue (France), sur des panics, l’hypothèse d’une sélection de résistance a été étudiée. Des prélèvements ont été effectués sur 28 parcelles à raison d’une feuille de 40 plantes différentes par parcelle. Des tests ADN ont permis d’identifier les espèces en présence. Puis des tests PCR ont permis de rechercher la présence de mutations entraînant des résistances aux herbicides inhibiteurs de l’ALS. Vu le nombre d’analyses à réaliser (7 codons sur 40 plantes x 28 parcelles), le séquençage « 454 » a été utilisé. Deux espèces de panics ont été identif…

Next-Generation Sequencing (NGS) application to the detection of mutations endowing herbicide resistance

2014

The Next Generation Sequencing (NGS) technologies offer tremendous possibilities for accurate detection of mutations endowing resistance. Yet, their use for this purpose has not emerged in crop protection. We aim at promoting NGS use for herbicide resistance diagnosis. In an exemplary study, we describe a simple procedure for this purpose, useable by virtually any scientist and implementing freely accessible programs for the analysis of NGS data. Three PCR amplicons encompassing seven codons of the ALS gene that are crucial for herbicide resistance were sequenced using non-quantified pools of crude DNA extracts from 40 plants in each of 28 field populations of two species of barnyard-grass:…