Have a look the the Species List here that the Destroyer products are designed to eradicate.

Rainfall of between 10-20mm will dissolve the granule and leach the active ingredient into the soil where it is available for plants/bushes to absorb it through their root systems.

Within 3-4 weeks after approximately 20mm rain was received on the product the leaves on affected bushes will get a light lime green colour. This is the start of the end and the bush will defoliate a few times and expend its energy and die.

Some documented cases exist that large quantities of sugar can neutralize some effects if applied very early in the process. This must be considered as anecdotal information.

Every listed specie has it’s own dosage that was tested in Namibia and approved by the Ministry of Agriculture, Water and Forestry: Remedy Registrations.

Should the dosage be too high the grass regrowth will be affected and the first season will produce barren spots where the granules was applied.

If the correct dosage was applied absolutely no effect will be shown by the grass exept vigorous growth due to moisture availibility.

Granules – Wastage less, Training easy, Spills can be reversed.

Liquid – Need syringes for accurate dosage, Many workers are already trained to use syringes.

Three methods exist to apply granules.

By Hand – Labour intensive, Social challenges exist to provide food, housing, transport etc. People miss small seedlings that grow back quicker. Aftercare to follow sooner. Spot coverage applied.

By using a small fertilser spreader mounted on the back of a vehicle. Only areas accessible by vehicle can be covered such as roads and fencelines.

By Aeroplane – Accurate, Quick, Spray Report give feedback on exactly what area was covered. Small seedlings also affected by area coverage.

The aeroplane hopper take 1Ton of product per trip that convert into 200Ha applied @ 5Kg/Ha. The 5kg/Ha is an average used accross Namibia for most Acacia species. Smaller areas are not economical viable except when neighbours band together to increase Ha’s.

Ussually the bushes absorb the first 150-200mm of rain due to their root hair cells having lower osmotic pressure than most grasses. This causes osmosis of moisture to happen easier and quicker for the bushes than for grass. This has the effect that no or few grasses grow underneath a bush and thereby it is protecting itself against hot veldfires. If no bushes exist the ground moisture will exist for the grasses to grow from the first 10mm of rainfall. If it should happen that a drought comes along wind erosion will definately be in effect. Without bushes you however have a build in buffer against droughts (should you farm conservatively and not overutilize the abundant grass) by converting rainfall into grass from 1mm and not only from 150mm going upwards.

It depends on a lot of different factors:

Was the grazing methods adjusted that caused bush thickening?

What type of soil is in the area? Clay will bind strongly with the active ingredients and have it available for a longer period than for example sandy soils.

Sandy soils will leach the active ingredients deeper and quicker than clay soils.

Is seed blown into the treated area from untreated areas.

With more grass available fire becomes a viable option to reduce regrowth.

Other active ingredients was found by the EU in meat/milk/grass or urine and banned all chemicals in the Agriculture Environment for a few months early in 2018. Bromacil is a cheap agressive ingredient banned worldwide Our products only used approved Tebuthiuron ingredients.  Because bromacil is a possible human carcinogen and systemic toxicity may result from intermediate exposure (one week to several months), U.S. Environmental Protection Agency (EPA) assessed risk to workers using several major exposure scenarios.

These chemicals are  arboricides that disrupts photosynthesis and is not a poison. It is harmless to warmblooded organisms but may affect fish.