Weeds are problematic and burdensome to many smallholder farmers in Zimbabwe. The continued existence of allelochemicals plants inhibit weed seed germination, plant growth nutrient uptake. A study was carried out assess the effects sorghum species on germination dry matter accumulation different soil types at Duncanstan Farm Featherstone, 3x3 factorial experiment laid a completely randomized de...

Greenhouse and field studies were conducted to evaluate potential interactions between glyphosate and trifloxysulfuron on barnyardgrass, browntop millet, hemp sesbania, seedling john­ songrass, pitted morningglory, prickly sida, sicklepod, and velvetleaf control as well as cotton injury and yield. In the greenhouse, glyphosate at 840 g ae/ha controlled all weed species 62 to 99%, which was bett...

The objective of this study was to compare ImiFlex rates and timings for efficacy crop response in imidazolinone-tolerant grain sorghum. Volunteer corn Johnsongrass control generally best when (imazamox) applied postemergence (POST), except tank mixed with Huskie (bromoxynil/pyrasulfotole). Likewise, Palmer amaranth most consistent POST. Though all herbicides increased yields relative the weedy...

According to gap-phase dynamics theory, forests can be divided into four distinct patch types: gap patch (G), building patch (B), mature patch (M), and degeneration patch (D). Varying light conditions across patch types are one of the most important factors affecting the coexistence of vegetation. Mechanisms of coexistence can be understood through detailed knowledge of ecophysiological respons...