in order to study the density and diversity of weeds and yield of barley and hairy vetch affected by mixed intercropping ratios, a field experiment was performed based on a randomized complete block design with four replications at the agricultural research station, college of agriculture, ferdowsi university of mashhad during growing season of 2012-2013. ratios of mixed intercropping were 75% ...

to evaluate the yield components, yield and land equivalent ratio affected by relay intercropping of sunflower (helianthus annuus l.) with faba bean (vicia faba l.), a field experiment was arranged based on a randomized complete block design with three replications at the agricultural research station payamenoor university of nagadeh, iran during growing reason of 2012-2013. the treatments incl...

The objectives of the present study were to compare growth performance and feed conversion ratios of brook trout (Salvelinus fontinalis) and Black Sea trout (Salmo trutta labrax) in monoculture and duo-culture tank reared conditions. The fish were about 9-month-old hatchery reared brook trout and Black Sea trout with initial weights of 24.18±0.64 (n=60) and 23.87±1.11 (n=60) g, respectively. Fi...

Agro-biodiversity is the result of natural and human selection processes involving animal, plant, and micro-organisms in agricultural systems, and is important for determining the socioeconomic and ecological benefits that can be derived from the systems [1]. The trend of developing monoculture agricultural systems for the sake of high productivity and economic return, however, has led agro-bio...

Malignant spreading involves the migration of cancer cells amongst other native cell types. For example, in vivo melanoma invasion involves individual melanoma cells migrating through native skin, which is composed of several distinct subpopulations of cells. Here, we aim to quantify how interactions between melanoma and fibroblast cells affect the collective spreading of a heterogeneous popula...

To study the effects of wheat-maize intercropping on the population dynamics of wheat aphids and their natural enemies, wheat-maize intercropping patterns were divided into four levels: 8:2, 6:2, and 4:2 intercropping, and monoculture wheat. The results showed that as the wheat coverage rate decreased, the quantities of immigrating winged aphids and their natural enemies significantly differed;...

The properties of mixtures of genotypes of Chlamydomonas reinhardtii were investigated by growing them in monoculture and in all possible pairwise combinations in chemically defined axenic medium. Two sets of genotypes produced by crossing wild-type isolates were cultured in each of two physical environments. Mixtures were consistently more productive and less variable over environments than we...

Agro-biodiversity is the result of natural and human selection processes involving animal, plant, and micro-organisms in agricultural systems, and is important for determining the socioeconomic and ecological benefits that can be derived from the systems [1]. The trend of developing monoculture agricultural systems for the sake of high productivity and economic return, however, has led agro-bio...

Intercropping systems compared to monoculture systems can more efficiently use the existing resources which ultimately will lead to increased plant performance. Therefore, to evaluate the benefits of intercropping maize and beans and assess its impact on yield and yield’s component, an experiment was conducted in factorial design with randomized complete block design in three replication, in 20...