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APVMA Code :60540
|To reduce vegetative growth in mango, stone fruit and apple trees.
Chemical Group triazole
Ospray Pack-Out 250 Plant Growth Regulator is a systemic growth regulator that reduces internode lengths of new shoots and causes earlier formation of terminal buds. Use of Ospray Pack-Out 250 Plant Growth Regulator should begin only when trees are nearing their optimum size. It is most suited to intensively managed orchards where trees are near to filling their allocated space and growth control is a prime requirement. It is not suitable for old or unhealthy trees.
If a tree is under stress, Ospray Pack-Out 250 Plant Growth Regulator should NOT be used.
Stress can be caused by:
moisture shortage due to lack of rain, or inadequate irrigation,
moisture excess due to high water table, flooding or inappropriate irrigation,
severe or successive frosts,
poor fertility caused by imbalance of major or minor nutrients, diseases, insects, inappropriate herbicide use, mechanical damage.
Treated trees may produce heavier crops and require a higher level of fertilizer application. Ensure that treated trees are not over-watered or subjected to drought stress. In some instances, treated trees may set excess fruit and careful attention should be given to thinning operations. When replanting a treated orchard, at least three years should elapse since the last application of Ospray Pack-Out 250 Plant Growth Regulator.
In orchards which have been treated with collar drenches of Ospray Pack-Out 250 Plant Growth Regulator, fresh soil should be provided to allow tree establishment and growth. Remove treated soil. An alternative is to avoid original tree holes, and place young trees as far as practicable from the treated soil (minimum 1.5 m). Where young trees are required to be planted in an established orchard which has been treated with collar drenches of Ospray Pack-Out 250 Plant Growth Regulator, remove treated soil and replace with fresh soil.
Foliar sprays: To a clean bucket of water, add the required amount of Ospray Pack-Out 250 Plant Growth Regulator and stir to make a smooth mix. Add slurry to half filled spray tank of clean water, add the required quantity of MacPhersons Wetter 600 or Agral and agitate during the completition of filling. Frequent or constant agitation of the spray mixture is recommended. Wash out spray tank after use.
Collar Drench: Mix required quantity ofOspray Pack-Out 250 Plant Growth Regulator with recommended volume of water. Periodic agitation may be necessary to prevent setting.
Foliar Sprays: Apply in a sufficient volume of water to ensure penetration of the spray and good coverage of target tissue, new green stem tissue in the case of apples. Apply in minimum volume of 1000L of water per ha. Agral at 18mL/100L of water must be added to the final spray volume. It is not normally necessary to reapply the spray if rain follows soon after application.
Collar drench: Uptake of Ospray Pack-Out 250 Plant Growth Regulator is most efficient when it is applied to soil which receives adequate water and where there is a high density of feeder roots.
Apply required amount of Ospray Pack-Out 250 Plant Growth Regulator in 0.5 to 2 litres of water per tree onto the soil/trunk crack line evenly around the base of the trunk. Where specific rates per tree are not given, the application rate per tree is determined by dividing the application rate per ha by the number of trees per ha. The volume of diluted drench required for even application without runoff will vary with the size of the tree and with soil type and moisture content. Use the higher volume on large trees.
Ensure that trees are adequately irrigated following treatment under dry conditions. Individual trees which are smaller than average should be left untreated or given a proportionally smaller dose of Ospray Pack-Out 250 Plant Growth Regulator.
Trickle point: Apply in 200 to 300 mL water per tree beneath each trickle or dripper point. Follow application with a short period of irrigation. Alternatively, the required amount of Ospray Pack-Out 250 Plant Growth Regulator can be applied through the trickle irrigation system. Equal distribution of water between trees is essential for this method to give a uniform effect.
In some cases, control of growth may persist for more than one year. Retreat trees when normal growth resumes. Use the interval between the first treatment and resumption of normal growth as a guide for retreatment in subsequent seasons.
Ospray Pack-Out 250 Plant Growth Regulator is compatible with any one of the following products: Nimrod, Omite 300W, Pirimor or Dithane M-45. However, mixing Ospray Pack-Out 250 Plant Growth Regulator with more than any one of these products may give unpredictable results or may result in crop damage. If Carbaryl is used as a thinning spray on apples, allow 21 days before application of Ospray Pack-Out 250 Plant Growth Regulator.
DO NOT use on trees of low vigour or under stress (see General Instructions).
DO NOT use in orchards underplanted with any other crops.
DO NOT apply to young trees which have recently been interplanted in orchards and which are required to make vigorous growth.
DO NOT apply by aircraft.
Protection of wildlife, fish, crustaceans and environment
DO NOT contaminate streams, rivers or waterways with the chemical or used container.
Avoid contact with the eyes and skin. After use and before eating, drinking or smoking, wash hands, arms and face thoroughly with soap and water.
Store in the closed, original container in a cool, well-ventilated area. Do not store for prolonged periods in direct sunlight.
Triple or preferably pressure rinse containers before disposal. Add rinsings to spray tank. Do not dispose of undiluted chemicals on site. If recycling, replace cap and return clean containers to recycler or designated collection point. If not recycling, break, crush, or puncture and bury empty containers in a local authority landfill. If no landfill is available, bury the containers below 500mm in a disposal pit specifically marked and set up for this purpose clear of waterways, desirable vegetation and tree roots. Empty containers and product should not be burnt.
Product details last updated on 25 Jun 2010
DISCLAIMER: This is not the PACK - OUT 250 label. To view or print the label for this product, click the "MSDS/Label" tab at the top of this page. Always follow label instructions.
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