this research was conducted to assess the effects of management and environmental factors on the weed species richness of winter crops in ilam province. in order to recognize the weed species, three counties were selected based on the type of climate in 2011-2012. according to the cultivated areas of winter crops in each county, 48 fields were chosen and demographic information was calculated b...

Abstrak. Penelitian ini bertujuan untuk mengetahui karakterisik dan perubahan dari komposisi gulma akibat campuran herbisida clomazone oksifluorfen pada tanaman kedelai. bertempat di desa Rumpet, Aceh Besar ketinggian 6 meter diatas permukaan laut (mdpl) laboratorium Ilmu gulma, Fakultas Pertanian, Univeritas Syiah Kuala, Banda bulan Maret-Juli 2021. menggunakan rancangan acak kelompok pola non...

Sustainable soil and crop management practices that reduce soil erosion and nitrogen (N) leaching, conserve soil organic matter, and optimize otton and sorghum yields still remain a challenge. We examined the influence of three tillage practices (no-till, strip till and chisel till), four cover rops {legume [hairy vetch (Vicia villosa Roth)], nonlegume [rye (Secaele cereale L.)], vetch/rye bicu...

Russian knapweed (Acroptilon repens [L.] DC.) and yellow starthistle (Centaurea solstitialis L.) are invasive weeds in the western United States, and both weeds are targeted for biological control. Cercosporella acroptili (Bremer) U. Braun was identified as a possible biological control agent for A. repens, and a morphologically similar Cercosporella sp. recently was found damaging to C. solsti...

Glyphosate resistant (GR) weeds have been the focus of much debate since the introduction of Roundup Ready crops in the mid 1990’s. Initially the questions focused on whether GR weeds would actually develop, but this quickly changed to how to prevent their selection following their rapid appearance after the introduction of Roundup Ready crops. Evaluating the relative effectiveness of different...

Paraguay, a country whose economy is based mainly on agriculture and livestock for export, has experienced a major expansion in mechanized crops during the last few decades. Despite being heavily dependent on agriculture, Paraguay has very limited research on crop weeds, in spite of these having a high economic impact on production. This work aims to update and enhance the knowledgebase on the ...