Parthenium weed (Parthenium hysterophorus L.) is an internationally important invasive native to the tropical and sub-tropical Americas, in more than 30 countries. This has serious adverse influences on rangeland agricultural crop production, human animal health, biodiversity of natural communities. leaf litter can reduce seedling emergence affect early growth a wide range pasture species. Soil...

A field experiment was conducted for two consecutive years (2003 and 2004) to study the effect of row spacing (75, 65 and 55cm) and different weed competition durations (0, 15,30,45,60 days after emergence and throughout the growth period) on weeds density and biomass and growth and yield of maize. Reducing row spacing significantly suppressed the weed density and biomass. The maximum reduction...

Manure composting has gained increased acceptance by the beef cattle (Bos taurus) feedlot industry in southern Alberta, Canada. Unlike fresh manure, compost is often promoted as being "weed-free." Studies were conducted with five weed species in 1997 and thirteen in 1999 to examine the effect of feedlot manure composting on weed seed viability. Weed seeds were buried in open-air compost windrow...

The present study aimed to investigate the possibility of using hyperspectral imaging data identify invasive and weed species in agrocenoses ecosystem. most common weeds grain agrocenoses, i.e., Ambrosia artemisiifolia L., Euphorbia seguieriana Neck., Atriplex tatarica Glycyrrhiza glabra Setaria pumila (Poir.) Roem. Schult, served as objects. population weeds, especially is for selected region ...

Weeds and invasive plants know no borders have collectively impacted many ecosystems worldwide, including croplands, forests, grasslands, rangelands, wetlands, riparian areas. Losses continue to mount, affecting yield productivity, species diversity, ecosystem services, with both short- long-term repercussions on the sustainability of plant animal communities livelihoods many. New emerging plan...

The critical period for weed control (CPWC) is the period in the crop growth cycle during which weeds must be controlled to prevent unacceptable yield losses. Field studies were conducted in 2005 and 2006 in the University of Birjand at the south east of Iran to determine CPWC of corn using a randomized complete block design with 14 treatments and four replications. The treatments consisted of ...

Ischaemum rugosum is a competitive weed in direct-seeded rice systems. Developing integrated weed management strategies that promote the suppression of weeds by crop density, cultivar selection, and nutrition requires better understanding of the extent to which rice interferes with the growth of this weed and how it responds to resource limitation due to rice interference. The growth of I. rugo...