In northern Laos, rapid population growth and government policies to reduce the area under slash-and-burn systems have resulted in increased cropping intensity, which has increased weed pressure and reduced yields of upland rice. Promising alternative cropping systems include the use of weed-suppressing and multi-purpose legumes as short-term fallow crops. In this study, Stylosanthes guianensis...

ABSTRACT Weed interference in young citrus orchards causes significant damages, especially when competition occurs during the dry season, environmental resources are even more scarce. This study aimed to test effects of periods and weed management on physiology, yield quality Persian lime fruits, season. The experimental design was randomized blocks, with five treatments [hoeing; glyphosate app...

Weeds are the major constraint to achieving higher wheat yield in Afghanistan. To evaluate weed interference and its impact on wheat, a field experiment was undertaken during winter season 2014–15 at Afghanistan National Agricultural Science Technology University (ANASTU), Kandahar. Seven control treatments comprising isoproturon 0.75 1.0 kg/ha 35 days after sowing (DAS), sulfosulfuron 20 25 g/...

Abstract Weeds are a major biotic constraint to the production of crops. Studies on critical period weed control (CPWC) consider yield loss due presence all weeds present in crop cycle. The CPWC is time interval between timing removal (CTWR) and weed-free (CWFP), before after extremes CTWR CWFP may not significantly reduce yield. taken into consideration density or biomass individual (annual pe...

A field experiment was conducted during rabi season of 2019-20 at College Farm, S. D. Agricultural University, Jagudan. The treatments included best combinations consisting physical and chemical methods as well alone. studies signified the importance hand weeding 25 40 DAS or application post emergence herbicides which could benefit crops in reducing different weed density ultimately reduced dr...

SUMMARY Simazine loss from soil to surface runoff water produce both a decrease in the effectiveness of the soil chemical treatment and a water quality hazard in receiving waters. Simazine has been found in 30% of wells sampled in Fresno and Tulare counties, California and some contamination has been attributed to simazine use in citrus orchards. Contamination of receiving water from herbicides...

Rice is an important cereal crop of global interest based on its daily uses. It was observed that the average yield rice low than potential production due to traditional growing techniques and weed intensification. Recently, intensification system (RIS) has emerged as alternative conventional cultivation system. A two-year field study carried out investigate impact seedling age (14, 21 & 28...

field experiment was conducted to assess the efficacy of wheat residues and different densities of sunflower in weed control during 2007 growing season. the experimental design was a randomized complete block with three replications. the experiment was set up in factorial arrangement, amount of 0, 1250, 2500, 3750, 5000 kg ha-1 of wheat residue and burning of residue (5000 kg ha-1) were the lev...