ABSTRACT-The critical period of weed control is a part of crop life cycle during which weeds must be kept weed-free to avoid yield losses due to competition. In order to evaluate the effect of deficit irrigation on critical period of redroot pigweed (Amaranthus retroflexus L.) in sunflower (Helianthus annuus L.), an experiment was carried out  as split plot ba...

Broomrapes (Orobanche and Phelipanche species) are holoparasitic weeds that infect roots of crop hosts from Asteraceae, Brassicaceae, Apiaceae, Fabaceae, Solanaceae. The parasitic difficult to control selectively without damage once attached their roots. Identification natural compounds with herbicidal activity against pre-attached broomrape stages can provide alternatives. With the aim identif...

The objective of this research was to evaluate the physicochemical characteristics Amaranthus spp. commonly happening in Brazil, besides defining efficiency different extraction processes phenolic compounds and antioxidant activity. Five species genus (A. spinosus, A. viridis, retroflexus, hybridus var. paniculatus e deflexus) were evaluated regard their such as vitamin C, soluble solids, pH, m...

Endofitne gljive žive unutar biljaka ne uzrokujući očite simptome bolesti. Korovi koji rastu u blizini poljoprivrednih polja mogu poslužiti kao alternativni domaćin ovih gljiva. Izolirali smo endofitne iz 6 vrsta korova, uobičajenih za istočnu Hrvatsku te bez očitih simptoma bolesti: Abutilon theophrasti, Amaranthus retroflexus, Ambrosia arthemisiifolia, Chenopodium album, Sorghum halepense i X...

This study aimed to compare weed flora in conventionally and organically grown medicinal aromatic plants (MAPs): basil, pot marigold, dill, peppermint; terms of composition abundance. A total 28 species (25 15 conventional organic crops, respectively) were identified.The presence abundance certain affected by MAP farming system. Higher diversity weediness, lower floristic similarity found crops...

The objective of this paper was to analyse allelopathic effect 3 different aqueous solutions from tree heaven’s (Ailanthus altissima (Mill.) Swingle) root extract and their dilutions on common wheat (Triticum aestivum L.), pigweed (Amaranthus retroflexus L.) red bristlegrass (Setaria pumila L.). Investigated obtained were solution, solution with isolated ailanthone without ailanthone. Each thes...