Latest News

25Feb

Agri-Chemical update

Words supplied by Bill Cabout, Assistant Retail Manager

 

For the next three months our focus for agri-chemical is on the following; fodder crops, pre-emergence sprays on autumn sown crops, grass grub control in pasture, and use of gibberellic acid to increase pasture growth.

 

Fodder Crops

Most sprays on fodder beet have been completed. If signs of disease appear, such as rust, powdery mildew, cercospora and ramularia leaf spot a fungicide can be applied. A key thing to remember is that there is a 42 day withholding period before the fodder beet can be fed.

Fodder brassica crops will need spraying with insecticides if the insect pressure gets too high. Insect pressure was low early in the season and we are starting to see a number of white butterflies flying in crops. This means there will be caterpillars in a few weeks, therefore an insecticide will need to be applied. This would also be a good time to apply aphicide to control any aphids that are present rather than having to comeback later to spray. If it stays dry insect pressure will increase especially in dryland crops.

Autumn Sown Crops

For crops planted after harvest it is recommended to drill with either Diazinon granules or Chlorpyrifos granules to help control grass grub. Both Diazinon granules and Chlorpyrifos granules (Suscon Green) are in plentiful supply this season.

If there is a lot of trash it is important to look at slug control, especially if the crops have been irrigated.  We have a range of slug baits available in store. The key to slug control is more baits per square metre.

Make sure to control slugs and insect pests when crops are drilled to ensure successful establishment of the new crop. If these pests are not controlled at this time it will create a problem where the only solution is a re-drill. Controlling pests earlier is a more low effective method.

Depending on the crop pre-emergence sprays are required to control weeds as we go into the winter months.   

Wheat

If hairgrass is a problem, we recommend the use of Firebird or Invado. The choice of which one used depends on other weeds are present, as Firebird also has diflufenican in it as well. These chemicals are often used with Asset (Terbuthylazine) for control of a greater range of weeds. If wild oats are a problem, Avadex Extra can be used pre-sowing to help control them. This is an alternative if you have problems with controlling wild oats later in the season. 

We also have Sakura, a new herbicide from Bayer for controlling autumn germinating ryegrass, vulpia hairgrass, annual poa and soft brome, plus it also gives suppression of autumn germinating ryegrass, ripgut brome, prairie grass and wild oats. This can be used instead of Firebird or Invado.

Barley

Again, Firebird or Invado can be used as above to control weeds pre-emergent.

Ryegrass

To control a range of annual grasses and other weeds, ethofumesate is used pre-emergence in both perennial and annual ryegrass.

Grass grub control in pasture

This is the time of year to control grass grub in pasture using Diazinon liquid. This must be applied to short pasture and it needs to be washed in by at least 12 mm of rain before it dries on the foliage. This season we have plenty of stock, but this can run out quickly. We advise placing your order early to make you do not miss out.

Gibberellic acid

We can increase the grass growth on pasture by 30-60% within a three week period by using gibberellic acid during the autumn period. For this to be successful there must be sufficient fertility and moisture to support this extra growth and liquid nitrogen is often applied to help this. Both granular and liquid versions of gibberellic acid are available and needs to be applied 3-5 days after grazing. We have liquid nitrogen available in 200 litre drums and 1,000 litre pods to go with the gibberellic acid.

With all the above scenarios talk to your Ruralco rep for the best options for you and your situation.

Related

Farmer recognition and appreciation behind Ruralco’s “Farmers. We’ve Got Your Back” campaign

Farmer recognition and appreciation behind Ruralco’s “Farmers. We’ve Got Your Back” campaign

Nationwide appreciation and recognition for the hard mahi put in by our farmers on a daily basis is ...

Read More
Family works to keep farm footprint light

Family works to keep farm footprint light

This fifth-generation family has also been making an effort to ensure that if the sixth generation c...

Read More
Methane mitigation tech not science fiction

Methane mitigation tech not science fiction

The demand to reduce livestock methane emissions is not in some distant timeline. That is glaringly ...

Read More
Golden oil flows from on-farm agronomy project

Golden oil flows from on-farm agronomy project

A farm-based agronomy project aimed at identifying key drivers of yield and profitability for oilsee...

Read More
Strengthening rural resilience and wellbeing in challenging times

Strengthening rural resilience and wellbeing in challenging times

Mid Canterbury Rural Support Trust takes a proactive approach to strengthening rural communities.

Read More
Lincoln researcher bugs out on protein options

Lincoln researcher bugs out on protein options

Caitlin Hyde is completing her PhD on the appeal of eating insects in New Zealand. She has chosen a ...

Read More




Account Selector