in order to investigate the effects of input intensity on species diversity, composition and density of weeds in corn (zea mays l.), an experiment was conducted based on a randomized complete block design with three replications at the agricultural research station, ferdowsi university of mashhad, iran during the year 2009. treatments included low input, medium input and high input systems. low...

The purpose of this work was to describe the population patterns of Anastrepha in three municipalities of the state of Roraima, Brazil, via faunistic analysis. Weekly collections were performed from January through December 2008, using McPhail traps containing 5% hydrolysed protein, in domestic orchards in the municipalities of Boa Vista, Bonfim and Pacaraima. We captured 301 females of Anastre...

Las barrancas de la ciudad Puebla presentan un relicto bosque encino (Quercus: Fagaceae) que se encuentra sometido a fuertes presiones humanas. A pesar importancia dicho representa para una urbe carente zonas arboladas, no existe información sobre su riqueza, diversidad y afinidad geográfica. De ahí los objetivos este trabajo, inventariar componentes flora vascular, determinar patrones distribu...

Both fertilizer and plant species richness may affect the soil nematode community. However, influence of weed interaction is unclear. Nematode abundance biodiversity in wheat plots treated with nitrogen, phosphate potassium addition (0, 1, 2 4 levels) were investigated a long-term microcosm experiment established 2010 at Kaifeng, China. The results demonstrated that treatment increased total ne...

Grasshopper is one type of insect known as a plant pest that quite affects agricultural production. Grasshoppers also have benefits natural predators and maintain ecological balance. One area where no research has been carried out on grasshopper diversity Dompu Regency, West Nusa Tenggara, Indonesia. This was conducted at 4 locations in Dompu, including corn, ex-corn, intercropping, Doroncanga ...

The Sesaot Nature Tourism Forest Area is a tourist area and an that used for the production of several plantation commodities, along with increasing human activities in area, it raises questions related to state its ecosystem, one aspect reflects namely diversity soil fauna. sample locations are divided into three paths based on characteristics waterway which niche points located river flow, mi...

Un porcentaje de los desechos generados en la ciudad Puebla se elimina sin control el sistema barrancas urbe. Por esta causa y debido a presencia asentamientos humanos irregulares, dichas sufren procesos degradación que ponen riesgo su continuidad con ello servicios ecosistémicos proporcionan ciudad. Tal situación exhibe estado encuentran las El Conde Malinalli, cual ejemplifica lo ocurre urban...