L.) are now grown with winter wheat and fallow. Integrating crop diversity with other cultural tactics enabled No-till systems have enabled producers to change crop rotations in producers to effectively control weeds with 50% less the semiarid Central Great Plains. Previously, winter wheat (Triticum aestivum L.)–fallow was the prevalent rotation; now producers grow herbicide inputs compared wit...

The objectives of this work were to evaluate two greenhouse screening methods for sudden death syndrome (SDS) and to determine which one is best correlated with fi eld resistance of soybean genotypes. The evaluations were done with three sets of genotypes that were classifi ed as partially resistant, intermediate, and susceptible to SDS based on previous fi eld evaluations. These three sets wer...

Lolium rigidum Gaud. is one of the most common weed species in winter cereals in Northeastern Spain. Herbicide resistance has been growing since the mid 90’s and exclusive herbicide use is not enough in many cases, so that it is necessary to combine as many control tools as possible. Six field trials have been conducted during the cropping seasons 200102, 2002-03 and 2003-04 on winter cereal in...

Sorghum (Sorghum bicolor (L.) Moench) may be harmlessly intercropped with Urochloa species during the off-season in Brazilian Cerrado. At end of sorghum cycle, forages can used for straw production soybean (Glycine max L.) as summer crop. This study aimed to evaluate cultivated off-season, palisade grass (Urochloa brizantha cv. ‘Marandu’ (Hochst. ex A. Rich). R. D. Webster) and Congo ruziziensi...

Six species of insects and a rust fungus have been successfully established for biocontrol of the weed Parthenium hysterophorus L. in Queensland, Australia. Effectiveness of biocontrol insects was evaluated at two properties in Queensland during 1996-97 based on an exclusion experiment using insecticides. Parthenium-infested plots with and without biocontrol insects were sampled at monthly inte...

in order to evaluate the impact of time of weed control on yield and yield components of two rapeseed cultivars (zarfam and opra) two separate experiments based on each cultivar conducted at shahryar (karaj). the experiment was carried out based on rcbd with three replications and six treatments for each cultivar. treatments were exerted on the different phenological growth stages including the...

Integrating cover crops into crop rotation could provide options for herbicide-resistant weed control in farming systems. To evaluate the potential effectiveness of spring-planted oats (Avena sativa L.) on suppression, productivity, and feed quality annual forage as sole intercrops order to determine best agroecological technique, two-year experiments were laid out under arid conditions Akmolin...

in order to investigate the possibility of reducing herbicide usage in combination with plant density and planting pattern, a field experiment was designed in chenaran, khorasan razavi, on 2010. the experiment was split plot treatments based on rcbd with three replications in factorial arragement. the treatments included of 3 level of plant density (100000, 120000 and 140000 plants ha-1) and 2 ...