Proceedings of the New Zealand Weed and Pest Control Conference1969 - Pesticides |
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Page 228
... weights harvested in this trial , no significant correlation was obtained between aphid numbers and grain weight , nor between grain weight in relation to aphid position on the head ( Table 1 ) . As 767 grains were harvested from ...
... weights harvested in this trial , no significant correlation was obtained between aphid numbers and grain weight , nor between grain weight in relation to aphid position on the head ( Table 1 ) . As 767 grains were harvested from ...
Page 229
... weight × 0 001g FIG . 1 : Effect of grain aphids introduced at flowering and one week after flowering on the weight of individual grains from infested heads , as com- pared with grain from aphid - free heads . Not only was the ...
... weight × 0 001g FIG . 1 : Effect of grain aphids introduced at flowering and one week after flowering on the weight of individual grains from infested heads , as com- pared with grain from aphid - free heads . Not only was the ...
Page 19
... weight was calculated for each treatment in all trials from samples taken during harvest . ( 6 ) Grain weight per ear was assessed by collecting at random 40 ears from each plot which were threshed by hand and grain weight calcu- lated ...
... weight was calculated for each treatment in all trials from samples taken during harvest . ( 6 ) Grain weight per ear was assessed by collecting at random 40 ears from each plot which were threshed by hand and grain weight calcu- lated ...
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