Ammannia auriculata Willd. (eared redstem) has become one of the most troublesome weeds in paddy rice China. Resistance to bensulfuron-methyl (BSM) spread extensively this species. Greenhouse and field experiments were conducted determine how eared redstem biotype density affect competition against rice. In greenhouse experiment, five treatments tested: a BSM-susceptible at low (58 plants m−2, ...

the environment” (Rice, 1984). Rice plants with an allelopathic effect on weeds can mean lower production To understand the genetic control of allelopathy in rice (Oryza costs because the need for herbicide application and/or sativa L.), quantitative trait loci (QTL) mapping was performed using a population of 142 recombinant inbred lines derived from a cross hand weeding is reduced. Thus, inco...

agement strategies for rice, which would be less dependent on synthetic herbicides. A bioactivity-guided isolation method was developed with the obThe search for allelochemicals in rice necessitates jective of isolating the allelochemicals in rice (Oryza sativa L.). Roots evaluating the activity in a laboratory set-up to distinof the allelopathic rice cultivar Taichung Native 1, grown hydroponi...

The nutria or coypu (Myocastor coypus) is a rodent native to South America that has been introduced almost worldwide since the early 1900’s, originally with the intent of fur farming in many cases. The nutria is a large (over 6 kg), semi-aquatic rodent with a voracious appetite and high reproductive potential. Nutria became established in the Louisiana wetlands in the 1930’s. The habitat proved...