in order to examine the multi-species weed competition in corn field an experiment as an interval mapping was carried out at the agricultural research field of ferdowsi university of mashhad during growing season 2009-2010. at 3-4 leafy stages of corn, 20 non-destructive quadrates determine and the density of weeds was counted separately. at the same time, 20 destructive quadrates determine and...

Greenhouse studies were conducted to evaluate the effects of soil organic matter content and pH on initial residual weed control with flumioxazin by planting selected species in various lab-made field soils. Initial was determined seeds into soils treated (71 g ha−1). Seeds Echinochloa crus-galli (barnyard grass), Setaria faberi (giant foxtail), Amaranthus retroflexus (redroot pigweed), Abutilo...

Amaranthus retroflexus L. and Chenopodium album are noxious weeds that have a cosmopolitan distribution. These species successfully invade adapted to wide variety of diverse climates. In this paper, we evaluated the morphology biochemistry 16 populations A. 17 C. Seeds from collected Spain, France, Iran were grown together at experimental field agriculture research University Mohaghegh Ardabili...

Decapod crustaceans, like many other animals, engage in agonistic behaviors that enhance their ability to compete for resources with conspecifics. These agonistic behaviors include the release of chemical signals as well as physical aggressive and submissive behaviors. In this study, we report that Caribbean spiny lobsters, Panulirus argus, use both urine-borne chemical signaling and physical a...

Taxon specific lens crystallins in vertebrates are either similar or identical with various metabolic enzymes. These bifunctional crystallins serve as structural protein in lens along with their catalytic role. In the present study, we have partially purified and characterized lens crystallin from Indian spiny-tailed lizard (Uromastyx hardwickii). We have found lactate dehydrogenase (LDH) activ...

Abstract Macronutrient inputs to annual cropping systems can benefit weeds as well crops, sometimes decreasing or eliminating the benefits of fertilization. This interaction between fertility management and integrated weed is becoming increasingly important these fields increase their focus on efficiency prevention, respectively. The risk increased competition reflects fact that biomass height ...

sulfonylurea herbicides mixtures with phenoxy herbicides can lead to effective control of broadleaved weeds. pot experiments were conducted to study the effect of foramsulfuron and nicosulfuron mixtures with 2,4-d plus mcpa on redroot pigweed and common lambsquarters in 2010 at the greenhouse of agricultural faculty of ferdowsi university of mashhad, iran. experiments were performed as a comple...