From the Ground Up, Issue 79

This Arable Update outlines practical strategies for using SDHIs effectively in the field while protecting their long-term efficacy.

This Update outlines the latest results on how Zymoseptoria tritici (Zt), the fungus that causes Septoria tritici blotch (STB), is responding to succinate dehydrogenase inhibitor (SDHI - Group 3) fungicides in New Zealand wheat crops.

This Arable Update illustrates how alternating and mixing Modes of Actions and active ingredients can help sustain disease control, protect yield, and deliver financial returns.

Maize is one of the easiest crops to mechanically weed and levels of weed control comparable to herbicides can be achieved. Find out more about the options available and how they work in this maize update.

Weed related yield losses ranging from 15% to 56% for silage and 15% to 61% for grain have been observed in New Zealand maize systems. In this maize update find out management strategies for a number of common annual and perennial weeds of maize.

Growers are reminded to report any grass weeds that appear unfamiliar or could resemble black-grass (Alopecurus myosuroides). Early reporting remains one of our strongest tools for protecting the industry.

Pre-emergence herbicides have been the mainstay of maize weed management. This Maize Update discusses factors affecting pre-emergence herbicide success including application timing, modes of action and soil interactions. 

Farmers face three levels of biosecurity risk; regional biosecurity incursion risk; border biosecurity, regional biosecurity and on-farm biosecurity. This Maize update discusses the importance of on-farm biosecurity, the one factor you have control over.

This Maize Update discusses key issues for consideration in the choice and establishment of over-winter cover crops, along with the results of a five-year trial at FAR’s Northern Crops Research Site which researched the potential for over-winter cover crops to suppress weeds in the following no-till maize grain crop.

Watch the recording for a webinar with FAR Senior Field Officer Ben Harvey on managing herbicide resistance pre-autumn sowing, covering what is herbicide resistance and methods to reduce the risk of herbicide resistance.