Latest News

30Nov

Pick the right brassica herbicide and get better crops and greater flexibility with crop rotations

THIS PROMOTIONAL FEATURE WAS PROVIDED BY CORTEVA AGRISCIENCE.

 

Most brassica crops will benefit from a herbicide while the crop emerges and establishes. Control of weeds during brassica establishment relies on choosing a suitable approach for your scenario (pre- or post-emergence programme) and then selecting herbicides that best fit the weed spectrum and crop rotation.

Post-emergence weed control programmes are all about spraying if and when weeds have emerged. Select a herbicide that best controls the key weeds present, with a manageable grazing withholding period and a plant-back suitable for the following crop. There are several post-emergence herbicides to choose from, each with their own weed spectrum. All of these herbicides have plant-backs that need to be considered for broadleaf pasture species like clover or other crops such as beet or lucerne.

Corteva Agriscience have developed Korvetto™, a unique post-emergence broadleaf herbicide, for scenarios where a wide weed spectrum and short plant-back are important. The plant-back for clover following application of Korvetto is just three months, while fodder beet, lucerne and many other crops is six months. An application of Korvetto to spring or early summer sown forage brassica should not pose any restrictions for typical rotations in pastoral farm systems. This is a key advantage over many existing post-emergence herbicide options which have longer plant-backs.

Korvetto controls many weeds commonly found in forage brassica. Arylex™ active and clopyralid combine to kill a broad spectrum of weeds including fathen, black nightshade, hairy nightshade, shepherd's purse, fumitory, thistles, yarrow, dandelion, narrow leaf plantain and many more.

Application timing is important as best results are achieved on weeds at the 2-4 leaf stage. Delaying application often leads to poor control of some harder-to-kill weeds, by which time they are already competing with the crop and will not be suppressed by canopy.

Poor plant populations or crop establishment e.g. due to unforeseen pest damage or adverse weather events, often leads to a poor canopy and exposes the crop to weed pressure throughout the growing season. These scenarios require careful assessment so talk to your Ruralco Representative as soon as possible for advice.

Walk brassica crops regularly and thoroughly to identify issues early for timely treatment. When assessing brassica crop for weeds, consider the opportunity to control pests which may be present or are building up in the crop. SpartaTM provides control of springtail, leaf miner, white butterfly caterpillar and diamondback moth while aphids can be controlled using TransformTM.

For more information, contact your Ruralco representative.

Related

Agri-Chemical Update Spring 2023

Agri-Chemical Update Spring 2023

The spring agrichemical update will include what is happening on farm for the next three months with...

Read More
Canterbury’s rescue angels

Canterbury’s rescue angels

Ruralco to offer shareholders the opportunity to make a direct donation to the service through their...

Read More
Forward planning with Ruralco lowers spring stress

Forward planning with Ruralco lowers spring stress

This winter Ruralco is ramping up efforts to help make members’ farming year be a simpler, lower st...

Read More
Rural resilience: Supporting mental health in rural communities

Rural resilience: Supporting mental health in rural communities

Early on in 2023 the Mid Canterbury Rural Support Trust identified the need to continue building our...

Read More
Aphids no match for winter cereal treatment

Aphids no match for winter cereal treatment

The cereal aphid (Rhopalosiphum padi) may be tiny in size, but as the main vector for one of the mos...

Read More
Diversifying to ensure a robust future

Diversifying to ensure a robust future

While New Zealand’s burgeoning tourist market presents opportunities for Mackenzie basin farmers to...

Read More




Account Selector