Proceedings of the New Zealand Weed and Pest Control Conference, Issues 32-331979 - Pesticides |
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Page 174
... tree . A tree- planting spade is used to remove a ring of bark from a height of about 20 cm down to ground level . It should be done in summer for best results . After 6 months , surviving trees should be inspected to remove any healing ...
... tree . A tree- planting spade is used to remove a ring of bark from a height of about 20 cm down to ground level . It should be done in summer for best results . After 6 months , surviving trees should be inspected to remove any healing ...
Page 175
... tree may even retain some leaves and form flowers , yet eventually succumb . Such trees , when without any basal sprouts within 3-4 months of ring - barking , were recorded as “ dying " . A tree with a healthy bridge , carrying normal ...
... tree may even retain some leaves and form flowers , yet eventually succumb . Such trees , when without any basal sprouts within 3-4 months of ring - barking , were recorded as “ dying " . A tree with a healthy bridge , carrying normal ...
Page 182
... tree ) 200 trees were planted , 2400 plants in total . Assessments Survival and tree health were recorded at three - monthly intervals . Main stem height and diameter of each tree was measured shortly after planting , then anually every ...
... tree ) 200 trees were planted , 2400 plants in total . Assessments Survival and tree health were recorded at three - monthly intervals . Main stem height and diameter of each tree was measured shortly after planting , then anually every ...
Contents
Presidential Address | 17 |
Control of meadow barley grass in pasture by the use of herbicides | 31 |
Initial studies into direct drilling of lucerne in Marlborough R I | 40 |
Copyright | |
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32nd N.Z. Weed activity adult Agric Agricultural alachlor application assessed atrazine Auckland azinphos-methyl bait barley BGLA black beetle browntop Canterbury chemical Christchurch crop cultivars damage density difenzoquat disease DSIR effect ester evaluation field crickets foliage fruit glyphosate gorse gorse seedlings grass grub grazing greedy scale growth harvest herbicides hexazinone increase infection insecticide isazophos Kain kiwifruit larvae leaf levels linuron litres litres/ha lucerne maize manuka mefluidide method mite mortality nematode numbers P.O. Box paddocks Palmerston North paraquat pasture pea aphid permethrin Pest Control Conf pesticides picloram plants plots populations Proc procymidone production programme pyrethroid reduced regrowth replicates residues Ruakura ryegrass samples season seed significant significantly simazine soil soldier fly sown species spray stem survival synthetic pyrethroid Table tested thistles tolerance toxicity treated treatments triadimenol trial untreated Weed and Pest weed control weeks weight white clover wild oat yield Zealand