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The term 'residual' applies to a number of herbicides that have a long lasting activity in the soil. These herbicides are often applied directly to the soil prior to planting crops, pre-emergent.
Control information for skeleton weed (Chondrilla juncea L.), a declared pest in Western Australia.
Control methods for noogoora burr (Xanthium strumarium) a declared p
Control methods for Grader grass (Themeda quadrivalvis) a declared pest in Western Australia.
Control methods for neem (Azadirachta indica A.Juss) a declared pest in Western Australia.
'Crop-topping' is the late application of herbicides to prevent weed seed-set.
Spray-topping is a very effective method for managing annual grass seed set in pastures.
Following the extended dry conditions this autumn, weeds are now emerging and becoming a challenge for growers to manage in paddocks that may have patchy crops, crops with staggered emergence or no
Herbicide performance can vary greatly depending on a number of factors. These can include compatibility of herbicides, water quality, sprayer decontamination and controlling stressed weeds.
Hyssop loosestrife (Lythrum hyssopifolia) is a widely distributed weed in the south west of Western Australia.