Proceedings of the New Zealand Weed and Pest Control Conference1969 - Pesticides |
From inside the book
Results 1-3 of 75
Page 43
... appear to be critical . The results do indicate that emergence plus two weeks is probably the best time . Any application before this growth stage is giving insufficient control , owing to a total reliance on the long - term effects of ...
... appear to be critical . The results do indicate that emergence plus two weeks is probably the best time . Any application before this growth stage is giving insufficient control , owing to a total reliance on the long - term effects of ...
Page 212
... appear to be low except in hill - country areas , and autumn flights do not appear at present to lead to serious infestations in autumn - sown wheat . In any case , control measures for cereal aphid in those crops would effectively deal ...
... appear to be low except in hill - country areas , and autumn flights do not appear at present to lead to serious infestations in autumn - sown wheat . In any case , control measures for cereal aphid in those crops would effectively deal ...
Page 282
... appear- ance on the leaf tips , and a general withering of the whole plant . Many plants are killed at the germinating stage while others collapse and die ? to 3 weeks after emergence . Surviving plants remain stunted in growth and ...
... appear- ance on the leaf tips , and a general withering of the whole plant . Many plants are killed at the germinating stage while others collapse and die ? to 3 weeks after emergence . Surviving plants remain stunted in growth 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 | |
35 other sections not shown
Other editions - View all
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