SL567aPlant Protection Product ComparisonPlant Protection Product ComparisonReport inaccuraciesReport inaccuracies

FORMULATION & ACTIVE INGREDIENT: SL567A is a soluble liquid containing 465.2 g/l (44.7% w/w) metalaxyl-M.

TARGETS: A soil-applied fungicide for the reduction of "cavity spot" disorder in carrots.

RAINFASTNESS: 3 hours

RESTRICTIONS
Resistant strains of Pythium spp. may develop against which SL567A may be ineffective resulting in crop loss.
Consult processor before using on crops for processing.

Crop Rotation
SL567A should not be used where carrots have been grown on the same site within the previous eight years. Levels of Pythium spp. in the soil are likely to be increased where carrots or other root crops are included at shorter intervals in the rotation. Such an increased disease inoculum will lead to higher levels of "cavity spot" on carrots.

Integrated Crop Management Strategy
SL567A is only one component in the crop husbandry package necessary to ensure reduction of Cavity Spot disorder and production of quality carrots. Consult Syngenta Crop Protection, your agronomist or chemical distributor for the latest information before using SL567A.
Effect of Soil Type on Cavity Spot Control
Trials results show that on mineral soils, control in the order of 60–90% is usually to be expected.
For soils with a high organic matter content a reduction of efficacy may be observed and SL567A may not give satisfactory levels of control. Trials results show that control in the order of 50–80% is usually to be expected.
N.B. Evidence is becoming available suggesting that the rate of degradation of metalaxyl-M in soil may vary between fields. Where degradation is rapid, then the expected level of Cavity Spot reduction will not be achieved. Addition of extraneous organic material into the soil e.g. sewerage waste or sugar beet tops may also increase the rate of metalaxyl-M degradation, since this acts as an alternative food source and will encourage multiplication of natural microbial levels in the soil.
Period of Protection
Main crop carrots overwintered in the ground or lifted during the winter may suffer late attacks of Cavity Spot from which the recommended applications of SL567A may not give expected levels of control.

DISEASES CONTROLLED
SL567A is a soluble liquid containing 465.2 g/l (44.7% w/w) metalaxyl-M which is used as a fungicide for the reduction of "cavity spot" disorder in carrots.
SL567A is capable of reducing levels of several pathogens known to be associated with "cavity spot" disorder in carrots (Pythium spp.). Pythium violae, the main causative organism is sensitive to metalaxyl-M, but not Pythium sulcatum, a less important component of the soil microflora.

CROP SPECIFIC INFORMATION
Crops
SL567A may be used on all varieties of carrots. Choose varieties with the highest natural resistance to cavity spot disorder to minimise disease on the root. No varieties have total disease resistance.
Timing
Apply the full dose of SL567A as soon as possible after drilling irrespective of crop growth stage, but no later than 6 weeks post drilling. Although soil moisture is required for activity of SL567A, the moisture level at application is not critical to achieving control of "cavity spot". Heavy rain in the period after spraying will reduce the effectiveness of SL567A. Best results will be achieved when application is made to damp soil.
Dose
1.3 litres SL567A per hectare.

MIXING AND SPRAYING
Spray Volume
Apply the recommended quantity of SL567A in 1000 litres of water per hectare.
Mixing
Make sure the sprayer is set to give an even application at the correct volume. Fill the spray tank with half the required volume of clean water and start agitation. Add the required amount of SL567A and continue agitation whilst adding the rest of the water. Agitate the mixture thoroughly before use and continue agitation during spraying.