Invasive animals can facilitate the success of invasive plant populations through disturbance. We examined the relationship between the repeated foraging disturbance of an invasive animal and the population maintenance of an invasive plant in a coastal dune ecosystem. We hypothesized that feral wild hog (Sus scrofa) populations repeatedly utilized tubers of the clonal perennial, yellow nutsedge...

Halosulfuron is a proposed alternative to methyl bromide for managing nutsedges (Cyperus spp.) in several vegetable crops, including cucurbits. Field studies were conducted to evaluate the crop sensitivity to halosulfuron in a spring squash (Cucurbita pepo L.)—fall cucumber (Cucumis sativus L.) rotation from 2000 to 2002. Treatments included application of halosulfuron to the soil surface after...

in order to study the weed damage and to determinate the influence of weed species and multiple weed species competition in corn (zea mays l.), a field experiment was conducted based on interval mapping at the agronomy research field of ferdowsi university of mashhad during 2009-2010. treatments consisted of four density level of crop (5, 6, 7 and 9 plant.m-2) and four type of weed management (...

This thesis, written by Eric Betancourt, and entitled Evaluation of Crop Seed Powders as Amendments for Purple Nutsedge (Cyperus rotundus) Control Compared to the Traditional Herbicide, Roundup, having been approved in respect to style and intellectual content, is referred to you for judgment. We have read this thesis and recommend that it be approved. iii DEDICATION I dedicate this thesis to m...

in order to evaluate the effects of duck with azolla sp. on weed density and growth parameters in rice-duck farming system, an experiment was conducted at sari agricultural sciences and natural resources university during 2012. experiment was arranged in split plot based on randomized complete block design with three replicates. main plots were duck at four levels (control, 400, 800 and 1200 pi...