THE SENSITIVITY OF THE GALIUM APARINE L. SPECIES TO SULFONYLUREA HERBICIDES PUBLISHEDRamona ȘTEF, A. CĂRĂBEȚ, Ioana GROZEA, D. MANEA, Ana-Maria VÎRTEIU, Anișoara IENCIU, R. CHIFAN None email@example.com
Galium aparine L. from Rubiaceae family, is believed to has originated in Eurasia. Galium aparine it is a weed problem producing direct damages, on wheat production, through the consumption of nutrients, water, etc., but also indirect by the fact that it lodges the cereal plants, makes it difficult to harvest by winding on cereal heder, it is a plant host for nematodes, insects and pathogens. Studies conducted by different researchers have shown that the species Galium contents alkaloids, saponins, etc. which have negative effects on growth and germination of wheat plants as well as on animal health (causes poisoning). Research on the sensitivity and resistance of cleavers populations to herbicides is important for farmers, thus giving them the opportunity to select the appropriate management strategy. The research aimed to assess the sensitivity of Galium aparine to sulfonylureas. The sensitivity of cleaver to sulfonylurea herbicides was determined by the percentage of control and wheat production, obtained in the experimental variants. The experimental field was established in western Romania, in Timiș County, Cornești locality (45 ° 54 ′ 43 ”N, 21 ° 17′21“ E and 119 m altitude). The Romanian wheat variety Glosa was used in the study. The trial was placed according to the method of randomized blocks with four variants in 4 replicates. The herbicides used to reduce the population of Galium aparine in wheat crop were: Alliance 660 WG (diflufenican + metsulfuron-metil), Harmony Extra (tifensulfuron-metil 50% + tribenuron-metil 25%) and Saracen Max (florasulam 200 g/kg + 600 g/kg tribenuron-metil). At 14 days after the application of the treatments, the population of Galium aparine winter wheat was reduced by 42.5-83.75%. The herbicides efficacy in reducing the population of Galium aparine, decreases to four and six months after application, respectively. The significant positive yield results were directly proportional to the herbicides efficacy for Galium aparine. The yield losses caused by the Gallium aparine species were 1.33 t / ha, in the untreated variant.
Galium aparine, sulfonylurea herbicides, sensitivity, wheat