Natural products are one of the resources for discovering novel pesticide leads. Here, by molecular hybridization between natural enamino diketone skeleton and reported herbicide lead compound I, a series 3-(1-aminoethylidene)-6-methyl-2H-pyran-2,4(3H)-dione derivatives (APD) were rationally designed, synthesized tested herbicidal activity in greenhouse. The bioassay results showed that most ta...

Abstract Complaints of control failures with acetolactate synthase (ALS)- and protoporphyrinogen oxidase (PPO)-inhibiting herbicides on redroot pigweed ( Amaranthus retroflexus L.) were reported in conventional soybean [ Glycine max (L.) Merr.] fields North Carolina. Greenhouse dose–response assays confirmed that the Camden County Pasquotank populations less sensitive to ALS- PPO-inhibiting com...

The accurate recognition of weeds on crops supports the spot application herbicides, high economic effect and reduction pesticide pressure agrocenoses. We consider approach based quantitative spectral characteristics plant objects to be most appropriate for development methods herbicides. made test plots with different species composition cultivated weed plants experimental fields scientific cr...

The Amaranthaceae family is composed of about 180 genera and 2500 species. These common weeds have become increasingly relevant as triggers of allergy in the last few years, as they are able to rapidly colonize salty and arid soils in extensive desert areas. The genera Chenopodium, Salsola, and Amaranthus are the major sources of pollinosis from the Amaranthaceae family in southern Europe, west...

l-Ascorbic acid functions as a precursor of oxalic acid in several oxalate-accumulating plants. The present study extends this observation to include Rumex crispus L. (curly dock), Amaranthus retroflexus L. (red root pigweed), Chenopodium album L. (lamb's-quarters), Beta vulgaris L. (sugar beet), Halogeton glomeratus M. Bieb. (halogeton), and Rheum rhabarbarum L. (rhubarb). Several species with...

About one-third of the earth’s land area consists acidic soils. The rhizotoxic Al3+ is one primary constraints associated with low soil pH. Various Amaranthus species are important components weed flora in tea plantations on acid soils north Iran. In this study, four (A. blitoides, A. retroflexus, cruentus, and tricolor) were grown under hydroponic conditions total Al concentrations 0, 20, 50, ...

The influence of weed seed predation by invertebrates and vertebrates was examined in relation to distance from hedgerows in maize fields of southwestern Michigan. Experiments were conducted in spring and winter and included five common weed species, i.e., velvet-leaf (Abutilon theophrasti), redroot pigweed (Amaranthus retroflexus), common lamb's-quarters (Chenopodium album), fall panicum (Pani...