Proceedings of the New Zealand Weed and Pest Control Conference1969 - Pesticides |
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Page 181
... damage in late March . Over 90 % of a population is confined to the visibly infected area or within a surrounding two foot margin . Populations usually increase from season to season by spreading peri- pherally from the areas initially ...
... damage in late March . Over 90 % of a population is confined to the visibly infected area or within a surrounding two foot margin . Populations usually increase from season to season by spreading peri- pherally from the areas initially ...
Page 216
... damage to field crops such as potatoes , kumaras and wheat . It is difficult to find reference in New Zealand to the extent of damage slugs do to these crops but reported losses in potatoes in the Rangitikei / Manawatu area can be as ...
... damage to field crops such as potatoes , kumaras and wheat . It is difficult to find reference in New Zealand to the extent of damage slugs do to these crops but reported losses in potatoes in the Rangitikei / Manawatu area can be as ...
Page 222
... DAMAGE IN NEW ZEALAND Susceptible vegetable crops are as follows : Brassicas - Brussel sprouts , cabbage , cauliflower : Damage to seedlings field plants , leaf damage , physical presence and faecal fouling on mature heads . Carrots and ...
... DAMAGE IN NEW ZEALAND Susceptible vegetable crops are as follows : Brassicas - Brussel sprouts , cabbage , cauliflower : Damage to seedlings field plants , leaf damage , physical presence and faecal fouling on mature heads . Carrots and ...
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