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Label - Agrichem Agri-Fos 600 Systemic Fungicide - 190529

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Applies to Agri-Fos 600 Systemic Fungicide

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AGRI-FOS 600®

Systemic Fungicide A powerful and effective buffered formulation for the control of Downy Mildew and Phytophthora diseases

Benefits of Agri-fos 600®

  • Independently tested to be on or above specification every time
  • Provides effective control of Downy Mildew and Phytophthora diseases on a wide range of crops
  • Formulated from a non-toxic potassium phosphite base
  • Systemic action provides complete translocation throughout the plant ensuring effective disease control of all diseased plant parts
  • Can be applied with a wide range of other agricultural chemicals, reducing the number of spray applications needed
  • Clear liquid formulation makes it easy to decant into spray equipment and mixing tanks
  • High concentration reduces quantity of product needed and saves on packaging and freight costs

Mode of Action

AGRI-FOS 600 is absorbed by the plant and translocated via the xylem and phloem to all parts of the plant. It is directly fungitoxic and enhances the plants immune system giving the plant the ability to fight the disease itself.

Disease invasion and prevention in the presence of phosphite

  1. Pathogen is affected by phosphite
  2. Suppressors either under or not produced
  3. Recognition of disease by plant cell
  4. Phosphite encourages defensive molecules, such as phytoalexins and PR proteins, to attack the disease directly; and
  5. Defensive molecules send “alarm signals” to cells that have not yet been attacked, then
  6. Polysaccharides strengthen the cell wall adding additional protection
  7. Disease is limited or killed by plant response

Agri-fos 600® Characteristics

ANALYSIS AGRI-FOS 600 contains 600 g/L Phosphorous Acid, present as mono and di potassium phosphonate pH: 7.5 - 8.0 Specific Gravity: 1.55

Tree and Vine Crops

CROP DISEASES COMMON NAME STATES TREATMENT METHOD RATES COMMENTS
ALMONDS Suppression of Phytophthora (Phytophthora spp.) All states Foliar spray 333 mL/100 L Ensure thorough coverage of foliage and branches. Spray to the point of run-off using air blast sprayer or equivalent equipment. DO NOT apply more than two (2) applications per season. DO NOT apply after hull split. DO NOT apply under high temperatures, particularly if humidity is low.
Through irrigation water 5.2 L/ ha Ensure even mixing with irritation water. DO NOT apply more than two (2) applications per season. DO NOT apply after hull split. DO NOT apply under high temperatures, particularly if humidity is low.
AVOCADO Phytophthora Root Rot (Phytophthora cinnamomi) QLD, NSW, SA, VIC, WA, ACT Injection Trunk Injection, Skeletal trees: 1st year 5 mL undiluted product per metre of canopy diameter. Other situations: 2.5 mL product diluted with 7.5 mL water per metre of canopy diameter. Inject trees at spring flush maturity - Repeat treatment in February or March. Drill holes 5 mm in diameter and 25 – 50 mm deep with slight downward angle in trunk. Syringes should be placed in the main trunk of the tree and spaced evenly around the circumference of the trunk. Suitable for use with Chemjet tree injectors, Ag-murf gun or hydraulic tree injection. Do not prune trees back before injection process as burning of new growth may occur. Do not inject trees in winter months. Do not cut back the canopy of injected trees. Do not add anything other than water to Agri-fos 600 for trunk injection. DO not inject more liquid in a lesser number of syringes than directed.
Phytophthora Root Rot (Phytophthora cinnamomi) QLD, NSW, SA, VIC, WA, ACT Foliar Spray 825 mL/100L Check the pH of the tank mix and buffer to a pH of 7.2. DO NOT apply more than 5 applications per year with a minimum re-treatment interval of 21 days between applications. Apply as a foliar spray by knapsack or air-blast sprayer. Only spray trees with a good leaf canopy. DO NOT add wetters or stickers or other pesticides to the solution. Commence spraying when autumn leaf and root flush is complete. Ensure applications are completed 6 weeks prior to flowering. Apply spray to the point of run-off, ensuring all leaves and branches are covered. Apply spray volume of 2,000-3,000 L/ha for mature trees (depending on tree size). Allow 10 days to elapse after a phosphorous acid spray before applying copper fungicides. DO NOT spray with phosphorous acid if residues of copper hydroxide are present; otherwise severe leaf defoliation may result.
CHESTNUT Suppression of Phytophthora Trunk and Root Canker (Phytophthora cinnamomi) NSW, VIC, SA, WA & TAS Foliar Spray only 333 mL/100 L In any one season only one application method can be undertaken, i.e. either the foliar spray regime or the trunk injection, not both. DO NOT apply to trees under severe water stress or during very hot weather. Apply foliar spray to the point of run-off ensuring all leaves and branches are covered. DO NOT apply more than two (2) applications per season.
Stem Injection only Dilute 1 to 3 with water; then inject 20 mL per meter of canopy Apply trunk injection up to three (3) times per year, two (2) during the production (growing) season and one (1) post harvest.
Suppression of Phomopsis Nut Rot (Phomopsis castanea) NSW, VIC, SA, WA & TAS Foliar Spray 333 mL/100 L DO NOT apply to trees under severe water stress or during very hot weather. Apply foliar spray to the point of run-off ensuring all leaves and branches are covered. DO NOT apply more than two (2) applications per season.

WITHHOLDING PERIODS: Almonds, Chestnuts, Macadamias: DO NOT HARVEST FOR 28 DAYS AFTER APPLICATION. Subterranean Clover: DO NOT GRAZE OR CUT FOR STOCKFEED FOR 14 DAYS AFTER APPLICATION. Citrus, Cucurbits, Avocado, Grapes, Pineapples, Walnuts: NOT REQUIRED WHEN USED AS DIRECTED. Poppies: DO NOT HARVEST FOR 6 WEEKS AFTER APPLICATION. DO NOT apply AGRI-FOS 600 at volumes which cause excessive run off. NOTE: Good agricultural practice requires that application be avoided under extreme weather conditions such as temperatures over 28°C, high humidity, frost, rain etc. It is recommended that when applying to a crop or area for the first time, or in combination with other chemicals, a small test area should be sprayed and observed prior to the total spray.

Tree and Vine Crops Continued

CROP DISEASES COMMON NAME STATES TREATMENT METHOD RATES COMMENTS
YOUNG OR SMALL CITRUS Phytophthora Root Rot (Phytophthora nicotianae) and Collar Rot (P. citrophthora) All states Foliar spray 170 - 330 mL/100 L to leaf wetness (by boom or similar high volume sprayer) Two applications. 1st Application: Late winter prior to flowering. 2nd Application: Autumn applied to mature fruit. Repeat applications annually to maintain protection for the plant. Depending on condition at time of application use a non-ionic wetting agent in conjunction with Agri-fos 600. WHERE DISEASE INCIDENCE IS HIGH OR WELL ESTABLISHED. For effective control, apply as a protectant before above ground symptoms of decline and collar rot become evident, spray trees for even coverage. Do not apply under high temperatures (above 35°C) particularly if humidity is low, or to moisture stressed trees.
MATURE CITRUS All states Foliar Spray 13.3 L/ha in 3000 - 4000 L of water; 53 mL/12 L per tree; 8.3 L/ha in 2000 - 5000 L of water; 33 mL/12 L per tree LOW PHYTOPHTHORA PRESSURE, WELL DRAINED SOIL. Removal of fruit from affected plants will enhance recovery. WARNING: Soft skin citrus trees may develop leaf burn and growth retardation following foliar application or soil drench of Potassium Phosphonate at rates recommended for established trees. WARNING: 1. Foliar application to fruit may cause damage to fruit. 2. Soft skinned citrus trees may develop leaf burn and growth retardation following foliar application or soil drench. Before applying this product for the first time, a small test area should be sprayed and observed for at least 1 week.
GRAPES Downy Mildew (Plasmopara viticola) All States Foliar spray 2 L/ha early season, small canopies; 2.7 - 4 L/ha Mid-late season, large canopies It is essential that the rate of Agri-fos 600 is adjusted to the vine-row volume (i.e. the volume of vine foliage per hectare). An application volume of 500 L/ha is suggested at the start of the season, increasing to 2000 L/ha in a vigorous crop at full canopy. Spray timing is critical. For best results apply Agri-fos 600 as a tank mix with protectant fungicides such as Mancozeb/Dithane, Copper Oxychloride etc, to ensure both pre- and post-infection activity. Agri-fos 600 should be applied at times of high disease risk, especially between the time that conditions are conducive to Downy Mildew infection and the appearance of oil spots. Ensure spray coverage is adequate and that the appropriate rate of Agri-fos 600 is applied to match vine growth, particularly from mid-season onwards and especially where grapes are grown on root stock.
MACADAMIAS Phytophthora Root Rot (Phytophthora spp) Trunk (Stem) canker (Phytophthora cinnamomi) NSW, QLD and WA only Foliar spray 170 – 200 mL/100 L Apply to affected macadamia trees at mature leaf flush during Spring and Autumn. Apply to each leaf flush if disease persists during the production season. DO NOT apply to young leaf flush, as phosphorus acid may burn the foliage. Apply spray to the point of run-off, ensuring all leaves and branches are covered. Apply a maximum of two (2) applications per crop. Apply using a spray volume of 2,000 – 3,000 L/ha for mature trees (depending on tree size) OR 7.5 – 10 L of solution per tree. Apply using air blast sprayer or equivalent equipment. DO NOT apply to trees under severe water stress or during hot weather.
Trunk Application 334 mL/1 L Apply to affected macadamia trees at root flush and 28 days after root flush. Apply a maximum of two (2) applications per crop. Apply by dilute spray to the point of run-off around the trunk to approximately 1 m above soil level, ensuring thorough coverage around the entire trunk. Trunk is to be wet at the time of application. Apply using a knapsack sprayer or equivalent equipment. A bark penetrant such as Pulse or similar is to be applied at the rate of 2%.
WALNUTS Phytophthora Root Rot (Preventative treatment ONLY) (Phytophthora spp.) NSW, VIC, SA, WA & TAS Foliar spray 333 mL/100 L DO NOT apply more than two (2) applications per season.
Injection 5 mL diluted with 7.5 mL water per metre of canopy diameter The sensitivity of some species and varieties has not been fully evaluated. It is advisable to treat a small number of trees to ascertain their reaction before treating the whole crop.
Microjet to root zone 5 L/ha or 9.5 mL per tree

Non Tree and Vine Crops

CROP DISEASES COMMON NAME STATES TREATMENT METHOD RATES COMMENTS
CUCURBITS Downy Mildew (Pseudoperonospora cubensis) All States Foliar spray 3 L /ha in min 800 - 1000 L of water Use weekly spray intervals when conditions favour disease development. To avoid phytotoxicity with some plant species, it is recommended that the product be tested on a few plants of each species prior to the main application.
ORNAMENTALS Phytophthora Root and Crown rot (Phytophthora spp.) QLD, NSW, WA, TAS, NT, ACT & VIC Foliar spray Knapsack/Boom 170 mL/ 100L; Air Blast 330 mL/100 L Apply at 4 - 6 weekly intervals when conditions favour disease development. To avoid phytotoxicity with some plant species it is recommended that the product be tested on a few plants of each species prior to the main application. DO NOT apply when ornamental plants are dormant or stressed. DO NOT apply to ornamental plants under extremes of temperature.
PINEAPPLES Phytophthora Root (Phytophthora cinnamomi) and Heart Rot (Phytophthora parasitica) QLD, WA Foliar spray 4 L/ha 1:200 – 1:500 water Apply to tops, two (2) weeks prior to harvest of planting material.
POPPIES Downey Mildew (Personospora cristata) TAS Foliar spray 2 L/ha Commence application from 10-12 leaf stage to row cover. Use in combination with Mancozeb products at registered rate. Repeat 7-10 days later. Apply no more than 2 sprays per crop season. Note: Crop toxicity problems may occur when application is made with low water volumes. Users should determine an appropriate water volume on a small area prior to large scale field use. Consult your field officer for assistance.
SUBTERRANEAN CLOVER Phytophthora Root Rot (Phytophthora clandestina) NSW, SA VIC, WA, TAS, ACT Foliar spray 500 mL/ha approx. 200 L water/ha Apply 8 to 9 days after first irrigation but before second irrigation. Apply in Autumn when Subterranean Clover is at the cotyledon to unifoliate leaf growth stage.