Abstract
Based on the investigation of weed in warm season turf of 46 Golf courses in southern China during 1998-2000 and 2013-2015 respectively. 159 kinds of weed were determined. Most of weed population or community contained 20 kinds of element weed including Digitaria sanguinalis, Paspalum conjugatum, Axonpus compressus, Panicum repens, Poa annua; Cyperus rotundus, Kyllinga brevifolia; Hydrocotyle sibthorpioides, Oxalis corniculata, Kummerowia striata, Alternanthera philoxeroides, Desmodium triflorum, Mimosa pudica, Centella asiatica, Securinega suffiruticosa, Viola japonica, Hedyotis corymbosa, Euphorbia humifusa, Lobelia chinensis and Alysicarpus vaginalis in 2000. While it changed to new 20 kinds of element weed including Digitaria ischaemum, Digitaria sanguinalis, Poa annua, Brachiaria villosa, Axonpus compressus, Cynodon dactylon, Paspalum distichum, Eragrostis pilosa, Panicum repens, Dactyloctenium aegyptium; Kyllinga brevifolia, Cyperus rotundus; Euphorbia humifusa, Hedyotis corymbosa, Desmodium triflorum, Hydrocotyle sibthorpioides, Centella asiatica, Alysicarpus vaginalis, Kummerowia striata and Trifolium repens in 2015. The investigation showed that grasses were increasing rapidly, broadleaf weeds were decreasing comparing with the weeds 15 years ago in the same golf courses. The paper showed 24 pieces of picture related those population or community. Author also analyzed the possible factors to influence the evolution of weed population. It may due to hand weeding, competition, climate changing, improper maintain and improper herbicide application.
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