Pre-emergent herbicides are a valuable tool to underpin crop competition and suppress weed seed production in-crop, but when growers also want to harness the power of retained stubble they often run into a sticking point where pre-emergent herbicide efficacy is compromised. Most growers and advisors are aware that products such as trifluralin are quite tightly bound if they contact stubble during application, however, AHRI research associate Dr Yaseen Khalil has been working to shed light on the behaviour of the newer pre-emergent herbicides and how to use them in no-till, stubble retention farming systems. Click through to learn more.
Tag Archives | management
What sort of person goes to a cocktail party and sticks strictly to beer? A smart one! We all know that mixing drinks can hurt the next day. We can’t say the same for herbicide mixing though. The smart farmers and agronomists are mixing two or more herbicides targeting the same resistant weed to delay resistance and maximise weed control, and the science is supporting this approach. AHRI researcher Roberto Busi is a long-term advocate of herbicide mixing and in his recent paper which describes some computer modelling that he undertook with the help of Michael Renton.
‘Trending now’ seems to be everywhere – iTunes, Twitter, the news, so why not herbicide resistance? What have been the #Top5 trends in resistance management over the past decade? As a young agronomist 20-something years ago (clearly before trending was a thing), I remember learning about the threat of herbicide resistance as if it was a kind of apocalypse. Some growers were genuinely concerned that they wouldn’t be able to continue farming. We’ve come a long way in a relatively short time. In this insight, we look closely at what’s trending in the herbicide resistance management space.
The ad in the paper that reads “Horse, free to a good home” seems to be a good deal at first, but what is the true cost of owning a horse? Roughly similar to running a Lamborghini as I understand! The ‘do it yourself’ narrow windrow burning chute seems cheap at the time, but what is the true cost? It depends…
We answer a few poignant questions in this insight, including: ‘Can crops do more of the heavy lifting when it comes to weed control than modern farming methods have allowed them?’ or ‘Have we tried so hard to protect crops from weeds that we have forgotten that they have innate mechanisms to ‘stand on their own two feet’ and ‘do it for themselves’?’ A series of important studies into the practical implications of harnessing the crop’s ability to defend itself against weeds are starting to produce important results, leading to improvements in farming practice and the development of new cultivars.
As AHRI and Weedsmart Western region agronomist, Pete recently gave a presentation to a group of high rainfall farmers who were concerned that they hadn’t had a decent knockdown for three years in a row. What he came up with, based on research and experience, was that we definitely should not be waiting for a knockdown, but we need to throw enough weed management at the farming system to make it work. No knockdown, no worries, if… To find out what the “ifs” are, click through to read the insight.
Did you know that rotary hoeing requires less energy than steaming? Or that offset discing requires less energy than microwaving? Well, that’s the case when it comes to controlling weeds. An epic effort to review 170 papers by a team from the University of Sydney (Guy Coleman et al) has shown that mechanical weed control options (eg. tillage) can use significantly less energy than thermal options (eg. heat) to kill weeds. Herbicide energy use sits somewhere in the middle.
Chickpeas are short and annual ryegrass takes advantage! At 5’2″, Jonte Hall is pretty short by everyday standards, let alone by Harlem Globetrotter standards. Nicknamed ‘Too Tall’, recently-retired guard Jonte is the smallest player to wear the Globetrotter’s jersey since the team was founded in 1926. Globetrotter veteran Herbert ‘Flight Time’ Lang, a more conventional-sized 6-foot-3 forward, is quoted as saying: “Too Tall is proof that if you stay focused, act positive and take advantage of opportunities, good things can happen.” So, how can chickpea play to its strengths & win?
Charles Sturt University has sown, sprayed and counted annual ryegrass from around 12 million seeds submitted from more than 5000 samples sent in from across Australia since it started testing for herbicide resistance in 1991…and that’s just ryegrass. Mind numbing stuff. But more than 5000 ryegrass samples? Most tested to five or six herbicides? Think about the value of that information! Dr John Broster and Professor Jim Pratley from CSU have analysed the data from ryegrass samples sent to the testing service over the 25 year period from 1991 to 2015.
Experiencing hardship is often the best way to learn the big lessons of life. Heartbreak, financial difficulty, hunger and hard manual labour are often times great motivators and they build resilience in those individuals that are not crushed by them.But, like banging your head against a brick wall, it is good when it stops! Taking a person who has experienced hardship and giving them an opportunity or access to resources will often result in great success. There are many examples where tenacity and grit have underpinned the success of social reformers, sportspersons, businesspeople and performers, and even every-day people in…