Q&A with Nick

Nick, Bioweed’s in-house Agronomist, answers your most popular questions about Bioweed, how it works and the key points in achieving best results.

How does Bioweed work?

Bioweed is not a systemic herbicide but works by stripping the outer coating of the contacted plant and seed, causing cell collapse and desiccation. The plant uses its natural water cycle to pull water and energy out of the root system and dehydrate the plants growth system. Naturally killing the plant externally.

What is the withholding period? And why is it important?

So, what is a withholding period? Simply put it is the amount of time that is needed for livestock or animals to be kept off a certain area that has been treated with herbicide.  Basically, it is in place to make sure the herbicide residue is below the maximum limit set by the APVMA to limit the impacts of the animals.

As Bioweed does not have a withholding period, it means that you are able to keep animals in the paddock while spraying without having to worry about the impacts of residual herbicides.

Weed and seed control

When you hear the term weed and seed control it relates to the weed killer’s ability to control both the weed itself and any seed on the plant or soil surface that Bioweed coming in to contact with.

What do you mean when say spray to a Point of Runoff?

Spraying to the point of runoff is a terminology that is used within weed spraying. It means that full coverage of all the plants surface is needed to achieve a kill. When applying Bioweed you should be able to see the weed killer completely covering the leaves and dripping off the tip of the leaf. If you unsure coverage to the point of runoff you will maximum your weed killing success.

What is the Mixing Rates for Bioweed?

Bioweed is to be mixed at a rate of 20% this means that if you have a 5L sprayer you will be mixing 1L of Bioweed to 4L of water. It is important to incorporate the Bioweed into the tank when filling with water to guarantee you have mixed the weed killer properly. Shake vigorously before applying. It is also good practice to spray what water is left in the hose and nozzle from the previous clean out before attacking the weeds.

 Pre and Post emergent

The difference between pre and post-emergent herbicides are quite simple. A pre-emergent herbicide controls weeds before they have come out of the ground a post-emergent control weeds once they have spouted from the soil.

Why are there two types of herbicides?

Pre and post-emergent exist to control both perennials (continue to grow season to season) and annuals that produce new plants each season. Many conventional farming methods use both types of herbicide at different times of the years to control both weed groups.

How does Bioweed differ?

Bioweed is a post-emergent herbicide that has pre-emergent qualities. This just means that Bioweed will control the weed the is current growth but also has the power to control seed that it contacts. This is the big difference in Bioweed’s seed killing ability. It does not have to wait in the soil for the seed to germinate to kill it but sterilizes the seed on contact. One of the biggest issues with conventional pre-emergent is that it stays in your soil for many months and can negatively affect your soil health. As Bioweed is non-residual it will kill the seed and within 72hrs will break down.