in order to survey the influence of metribuzin herbicide on physiological indices and yield of wheat, an experiment was conducted at experimental field of plant pest and disease research institute, karaj, iran during 2007. treatments were in factorial arrangement laid out in four randomized complete blocks. the factors investigated were three plant densities: 400, 500 and 600 plant.m-2 and metr...

A field study on the effects of pre- and post-emergence application herbicide (pendimethalin) reproductive yield five accessions cowpea (TVu-9092, TVu-16265, TVu-16320, TVu-16323 TVu-16421) was conducted between June August, 2018. Pendimethalin applied both as early (PE EPOE) followed by hand weeding at 4 8 weeks after sowing (WAS). Number pods per plant highest in TVu-9092 treated with 0.125 k...

This study was conducted under laboratory conditions to investigate the effects of herbicides (nicosulfuron, metribuzin and glyphosate) on the number of actinomycetes in soil and growth of several isolates of actinomycetes in vitro. The lowest tested concentrations equalled the recommended rates (1X), while the other three were five-fold (5X), ten-fold (10X) and fifty-fold (50X). Samples were c...

Abstract Crop residue can intercept and adsorb residual herbicides, leading to reduced efficacy. However, adsorption sometimes be reversed by rainfall or irrigation. Greenhouse experiments were conducted evaluate the effect of differential overhead irrigation level on barnyardgrass response acetochlor, pyroxasulfone, pendimethalin applied bare soil wheat straw–covered soil. Acetochlor resulted ...

Abstract The objective of this work was to evaluate the effectiveness and selectivity herbicides applied at preemergence melon (Cucumis melo) crop. experiments were carried out from 2017 2018, in a randomized complete block design, with four replicates, state Rio Grande do Norte, Brazil. treatments consisted application of: 35 g ha-1 a.i. flumioxazin, 25 250 sulfentrazone, 480 metribuzin, 240 o...

cation as the layby treatment. Such herbicide treatments follow the last cultivation before harvest. Shading and With adoption of combine harvest technology, massive sugarcane competition from sugarcane plants usually control weeds (Saccharum Spp. Hyb.) residue is left on the soil surface following each harvest, which could affect the environmental fate and efficacy developing after canopy clos...