DIAZOL 800 Insecticide

Transcription

1 Fact Sheet DIAZOL 800 Insecticide An Emulsifiable Concentrate (EC) containing 800 g/litre diazinon DIAZOL 800 is an insecticide for the control of insect pests in pipfruit, kiwifruit and certain fruit, vegetable and arable crops. It is a non-systemic organophosphate (OP) insecticide acting on the nervous system of insects by inhibiting cholinesterase activity, killing them by contact action and as a stomach poison following ingestion. DIAZOL 800 is active against larvae and adult stages of many chewing and sucking insects. However, at normal use rates it is not effective against eggs and pupae. DIRECTIONS FOR USE: DIAZOL 800 is toxic to bees. Hence, do not spray plants in flower if they are likely to be visited by bees. Rainfall within 3 hours of application may reduce effectiveness, except where it is applied to soil for grass grub control. HORTICULTURE The rates suggested are for high volume spraying to thoroughly wet the crop without runoff. For concentrate spraying adjust dilution rates accordingly. CROP PEST RATE CRITICAL COMMENTS Vegetables Beans Brassicas Lettuce Onions Sweetcorn Maize Tomatoes Caterpillars Thrips 1 litre/ha (100 ml/100 litres) in litres of water per hectare Apply at first sign of insect pests and repeat as necessary. Apples Pears Stonefruit Over-wintering San Jose scale Woolly aphid Leaf curling midge Mealy bug Apply at green tip in combination with a suitable spraying oil. Thereafter use DIAZOL (500 EW). EXPORT APPLES: Export apples should not be treated after 15 th December. Please consult your exporter for more information. 1

2 CROP PEST RATE CRITICAL COMMENTS Grapes Mealy bug Apply at budburst. The addition of suitable spraying oil (1 litre/100 litres) will assist with penetration into the bark crevices. Thereafter use alone or in combination with suitable fungicides as required. An application just before bunch closure is recommended. Kiwifruit Greedy scale Leaf roller caterpillars a) To control over-wintering scale apply when the vines are dormant during the July/August period, preferably 7-10 days after a previous lime sulphur application. b) To control Leafroller caterpillars and Greedy scale crawlers in season apply pre-blossom at complete petal fall, after the bees have been removed. Apply again later and thereafter at 21 day intervals until within 28 days of harvest. Note: For maximum scale control good spray coverage of all parts of the vine, including the wood, is essential as well as treating nearby shelter plants, which could be hosts. EXPORT KIWIFRUIT: Do not use DIAZOL 800 on export kiwifruit. Tamarillos Whitefly Spray immediately after pruning. Repeat 7-10 days later, thereafter at 3 weekly intervals. As these pests are mainly on the underside of leaves thorough plant coverage is essential. Caterpillars Use on appearance of pests. Repeat as necessary. AGRICULTURE CROP PEST RATE CRITICAL COMMENTS Brassicas Army caterpillar Diamondback moth 800 ml/ha in litres of water Spray early morning or late evening when the insects are actively feeding. Treat at the first sign of damage, when most of the caterpillars are small. Springtails 350 ml/ha in 200 litres Cereals Cereal aphids 800 ml/ha in 200 litres In germinating crops apply 1-2 days before crop emergence. For aerial spraying make two passes, each pass applying half of the total amount. 2

3 CROP PEST RATE CRITICAL COMMENTS Pasture Army Caterpillar 800 ml/ha in 200 litres Apply when caterpillars are actively feeding in the early morning or late afternoon. Grass grub** 3 litres/ha in litres CRITICAL COMMENTS: Apply to closely grazed pasture, between February and April, when grubs are feeding close to the surface, but before damage has become severe. See additional comments below**. Porina caterpillar** litres/ha in litres CRITICAL COMMENTS: Apply to closely grazed pasture. Use the heavier rate when caterpillars are numerous or the pasture dense. Best control of porina is obtained if spraying is followed by warm nights, even when rain falls. Poorest control is obtained if frosty weather follows spraying. See additional comments below**. Lucerne flea 350 ml/ha in 200 litres CRITICAL COMMENTS: Spray when insects first appear in autumn and repeat at 4 weekly intervals if necessary. WITHHOLDING PERIODS: Pasture and fodder crops Tomatoes Apples, pears, stone fruit, grapes, tamarillos Beans, brassicas, lettuce, onions, sweetcorn, maize Cereals Kiwifruit Nil 3 days 28 days Keep ducks and geese off treated areas for 7 days after application. GRASS GRUB and PORINA CATERPILLAR Both grass grub larvae and porina caterpillars cause significant reduction in dry matter production of pasture, even at very low levels of infestation. Damage increases as the number of larvae increases. Pasture dry matter losses as high as 4,300 kg/ha have been recorded. Many arable crops, particularly winter sown cereals, can be affected if planted into paddocks suffering grass grub damage. 3

4 Both insects prefer to lay on taller vegetation, which protects the eggs. As a result, hay paddocks, grass seed paddocks and tall pasture are more likely to be infested. Sample suspect paddocks in late summer early winter (Feb-Mar) by digging spade squares. The threshold for grass grub infestation is about 8 per 20 cm spade square (200 grass grub/m 2 ). For porina dig to the full depth of the blade. Use a W pattern over the whole paddock. Insect distribution is uneven. Thus, if larvae are found, dig additional holes in the local area. Infestations should be treated if about one to two caterpillars per spade square (about porina/m 2 ) are found. Treatment should be considered at much lower average densities if the infestation is patchy. Porina feed on leaves, emerging from their burrows at night to sever leaves, which are taken back to their burrows to eat. Consequently, damage is indicated by patches of shorter pasture with increasing areas of bare ground. Porina caterpillars leave worm like casts. They are granular, not solid and shiny. If picked up carefully with the tip of a knife blade, the granules can be seen as held together by spider-like webbing. Caterpillars live in vertical burrows and are 15 mm to over 50 mm long, dark greenish-grey on top and cream underneath. Porina feed from late evening. Hence, try to apply DIAZOL 800 as late in the day as possible, avoiding frosty nights. Grass grub feed on roots in the top 60 mm of the soil. Damage is indicated by patches of suppressed growth, typically with yellowing of the leaf tips and clumps of pasture are pulled up by grazing animals. Larvae are horseshoe shaped and whitish in colour with 6 legs and a brown head. Mature third instar grubs are about thumb-nail size. The life cycle is typically one year. However, larvae can live for two years under some circumstances. GRASS GRUB: DIAZOL 800 will control grass grub larvae very effectively if it is placed in the feeding zone of the grubs, just below the soil surface. Therefore, it is critical that DIAZOL 800 is applied during rainfall or when rain is imminent. The pasture must be short and hard grazed. The soil surface and sub-surface should be moist from recent rainfall or irrigation. Apply during February to April, when grubs are small and near the surface and before damage becomes severe. Do NOT apply to heavy clay or peaty type soils. Spray in the rain: DIAZOL 800 can be moved into the soil surface by rainfall. Apply using a normal boom with fan or cone nozzles. Try to prevent the spray from drying on the foliage as it can be difficult to wash off. This is best achieved by spraying when rain is falling or when the foliage is wet and rain imminent. Spraying 4

5 immediately before overhead irrigation may also be effective, provided the spray does not have time to dry on the foliage before irrigation. For most effective results at least 13 mm of rain is required after application. MIXING AND COMPATIBILITY: Pour the correct quantity of DIAZOL 800 into the partly filled spray tank. Agitate and add the remainder of the water. When using in combination with wettable powders or flowable suspensions always add DIAZOL 800 last to the spray tank. Keep agitated whilst adding the remaining water. DIAZOL 800 is compatible with most commonly used wettable powder fungicides and insecticides. Do not mix with copper compounds, Bordeaux mixture or lime sulphur. RESISTANCE WARNING STATEMENT Resistance to this product could develop from excessive use. To minimise this risk use strictly in accordance with label instructions and resistance management strategies that exist for any insect pest listed on the label. Avoid using this pesticide exclusively all season and avoid unnecessary spraying. Maintain good cultural control practices. IMPORTANT: This is not the registered label. Always read the label before using this product and follow label instructions. For specialist advice in an EMERGENCY call (all hours). Registered pursuant to the ACVM Act 1997, No, P7724. See for registration conditions. Approved pursuant to the HSNO Act 1996 approval no. HSR HSNO Classifications 3.1D, 6.1C, 6.3B, 6.8B, 6.9A, 9.1A, 9.2B, 9.3A, 9.4A See for approval controls. Adama and Diazol are registered trademarks of an Adama Group Company. Release date: