Proceedings of the New Zealand Weed and Pest Control Conference1969 - Pesticides |
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Page 17
... four days . The station was reduced in load but no damage was done . Ohakuri suffered later in February , 1969 , after four years of relative quiet , when a strong east - south - east wind drove the hornwort under and over the boom ...
... four days . The station was reduced in load but no damage was done . Ohakuri suffered later in February , 1969 , after four years of relative quiet , when a strong east - south - east wind drove the hornwort under and over the boom ...
Page 207
... Four main weeds , black nightshade ( Solanum nigrum ) , yellow weed ( Galinsoga parviflora ) , redroot ( Amaranthus spp . ) and willow weed ( Polygonum persicaria ) , were present in all herbicide treatments at the time of weeding on ...
... Four main weeds , black nightshade ( Solanum nigrum ) , yellow weed ( Galinsoga parviflora ) , redroot ( Amaranthus spp . ) and willow weed ( Polygonum persicaria ) , were present in all herbicide treatments at the time of weeding on ...
Page 43
... four to five leaves and 6 to 7 in . in height . A heavy infestation of weeds was present , consisting of barnyard grass 60 % , redroot 20 % black nightshade 10 % , and fathen 10 % . Barnyard grass was well advanced having four to five ...
... four to five leaves and 6 to 7 in . in height . A heavy infestation of weeds was present , consisting of barnyard grass 60 % , redroot 20 % black nightshade 10 % , and fathen 10 % . Barnyard grass was well advanced having four to five ...
Contents
Presidential Address W F Leonard | 15 |
Control of Hornwort Ceratophyllum demersum B E Manson | 23 |
Endothal as an Aquatic Herbicide G W Woon and G W Mason | 30 |
Copyright | |
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Common terms and phrases
abAB acre aphid application areas assessment asulam atrazine Auckland Australian soldier fly autumn barley grass bromus mollis BYDV Canterbury carbetamide cereal aphid chemical chlormequat Christchurch crop damage Department of Agriculture diazinon dicamba diquat disulfoton dry matter effect ester farm farmers fathen fenitrothion fensulfothion formulations gorse grain gran granules grass grub grazing growth harvest heptachlor herbicides increase infestation insecticide ioxynil larvae lb/acre lindane linuron lucerne matagouri MCPA MCPB means and signif methabenzthiazuron mixture N.Z. Weed organophosphate P.O. Box paddock paraquat parathion pasture response peas Pest Control Conf phenmedipham phorate picloram plants plots porina post-emergence Proc production prometryne pyrazon rainfall rates reduced replicates residual ryegrass samples season significant simazine soil sowing sown species spraying Stat Summary Table terbutryne thistle tion Total treated Treatment lb trials trichlorfon Untreated variety Weed & Pest weed control weed seeds wheat white clover willow weed yield Zealand