Dr Marisa Collins

Associate Professor in agronomy @ La Trobe. Views are my own.

[Dr Marisa Collins @drrisag]

Paddock survey shows that nearly 50% of growers miss out on 500 kg/ha in yield potential. Yield gap analysis in mungbeans shows: fallow > double crop due to 💦 narrow rows <40 and risk factors are starting nitrate N < 65kg/ha, nematodes > 3 & high temps at 🌾@lindsaywbell

[The Land @thelandnews]

No "mongrel" in mungbeans https://t.co/fRWO2SeexB

[Dr Marisa Collins @drrisag]

@girdley Agriculture! Production of food

[Andrew McGuire @agronomistag]

New long-term research: the benefit of no-till practices on water infiltration is large. Unlike tilled soil, where aggregates break down after the first rain or irrigation, no-till methods maintain soil structure and infiltration effectively.
Open access

https://t.co/jQz5pSH39O

[Dr Marisa Collins @drrisag]

@SEPfieldPatient @acweyand Yes! Also, do you regularly pass big blood clots? How many pads / tampons a day do you use? Is it different for different periods? Do you get gastrointestinal upsets (eg diarrhoea) or other symptoms (eg terrible headaches) when you get your period?

[Dr Marisa Collins @drrisag]

@GrasLab @nhmrc @LIMSLTU @SABE_latrobe @latrobe Great work Steph, well done!

[Dr Marisa Collins @drrisag]

@sensorystories_ 💯 see these behaviours in my daughter for years before her ASD diagnosis

[GOA @GrainOrana]

💛GOA has been pretty chuffed to be involved in this research to come up with some great tips on growing good quality canola seed.

🧐.........BUT don't forget how much of an impact fertilizer can have on germ.

🎧PODCAST🎧⬇️
https://t.co/KZOFtkCDJm

@theGRDC @GRDCNorth @nswdpi

[Andrew McGuire @agronomistag]

More research on glyphosate impacts on soil microbiology: neither soil bacteria and fungal diversity (alpha and beta) nor functional potential were impacted by cumulative glyphosate doses.
https://t.co/DTzTt7SvEc https://t.co/D8HzbfSRoM

[Andrew McGuire @agronomistag]

And if it is not a water effect, it is probably a nitrogen effect.
https://t.co/OufldGxPpC

[Andrew McGuire @agronomistag]

"Our analysis suggests that the extra storage capacity of water, which increased by up to 15 mm in the topsoil for each unit percentage increase in SOC, was the main driver for the observed yield responses."

With soil health, the benefits are all about the water.

[Andrew McGuire @agronomistag]

Here's a paper that looked for the soil damage reported in the first article, which was related to increased levels of Fusarium: "We did not detect an effect of glyphosate treatment on the relative abundance of organisms such as Fusarium spp."
Open access
https://t.co/YU875yrnZD

[Andrew McGuire @agronomistag]

Does synthetic nitrogen fertilizer burn up soil organic matter?
Multiple studies say NO.

N fertilizer actually slows loss of old soil organic matter and increases microbial biomass and new soil organic matter.

New from @jwadeexperience and I: https://t.co/RY6TjYK22o

[Michael Brougham @agromick82]

The quest to improve lentil production on red soils continues with the installation of amelioration treatments at mallala

[Ali Bajwa @a1bajwa]

Hello everyone, can you please help complete a short survey to support our research. Thanks and good luck with the season!
https://t.co/Erpu8i0oAT

[Ali Bajwa @a1bajwa]

Australian #agronomists, #growers, and #researchers managing #weeds in grains production, are you concerned about the changing #weed_ecology? Please help our @theGRDC project by completing a brief survey: https://t.co/Erpu8i0Wqr

@theGRDC @WeedSmartAU @WeedSmartAU @SABE_latrobe

[Andrew McGuire @agronomistag]

So, if N fertilizer increases soil organic matter in the long-term, does it have a similar effect on microbial biomass?
This review says YES, N fertilizer application "led to a 15.1% increase in the microbial biomass above unfertilized controls."
https://t.co/oz9mzdFnjK

[Andrew Whitelaw @WheatWatcher]

What is your unpopular opinion on agriculture?

It's interesting to see people 'debating' agricultural practices in recent days.

Is there a view you have that is unpopular in the agricultural sphere?

Mine is that veganism isn't a huge risk to agriculture.

Let's hear them.

[ME Research UK @MEResearchUK]

ME Research UK-funded Dr Sarah Annesley at La Trobe University recently published an article discussing some of the pathological mechanisms that may be shared between ME/CFS and long COVID: https://t.co/5qWAuF8OWD

#MECFS #pwME #MyalgicE #MyalgicEncephalomyelitis

[Dr Marisa Collins @drrisag]

@stationmum101 There is a camping guy on YouTube that buys all the tents off Shein and Temu!

[JXB @jxbotany.bsky.social @JXBot]

'Stomatal effects and #ABA metabolism mediate differential regulation of #leaf and #flower cooling in #tomato cultivars exposed to heat and #drought stress' - Nikolaj Bjerring Jensen et al. 🍅

https://t.co/t8PvUj3a6p