Proceedings of the New Zealand Weed and Pest Control Conference1969 - Pesticides |
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Page 210
... root aphid ) Recorded Host - plants in New Zealand Roots of grasses and giant buttercup ( Ranunculus acris L. ) Roots of Danthonia sp . All grasses and cereals , occasionally on other plants . Galls on petioles of poplar , roots of ...
... root aphid ) Recorded Host - plants in New Zealand Roots of grasses and giant buttercup ( Ranunculus acris L. ) Roots of Danthonia sp . All grasses and cereals , occasionally on other plants . Galls on petioles of poplar , roots of ...
Page 282
... roots under the crown of the plant . Single larvae appear to be able to cause the death of young plants by puncturing the stem just below ground level . With maize , there may be root regeneration in some plants after a period of 6 ...
... roots under the crown of the plant . Single larvae appear to be able to cause the death of young plants by puncturing the stem just below ground level . With maize , there may be root regeneration in some plants after a period of 6 ...
Page 210
... roots in sufficient concentration to kill larvae at their feed- ing sites ( Wheatley and Hardman , 1966 ) . In the three field trials ... root transformation 888 99 69 89 The effect of the seed dusting treatment persisted into spring 210.
... roots in sufficient concentration to kill larvae at their feed- ing sites ( Wheatley and Hardman , 1966 ) . In the three field trials ... root transformation 888 99 69 89 The effect of the seed dusting treatment persisted into spring 210.
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