Welcome to this occasionally mildly interesting farming podcast (it's a science podcast), hosted by award winning podcaster Michael Blanche (200m swimming badge 1978) and not-yet-not-a-real-doctor Paul Allison. We talk about recent research into soil, pasture, cows and sheep. People say that it's the podcast they didn't know they wanted or needed, and they definitely didn't ask for it. It's sometimes a bit sweary (not the big one). It's fine.
Cows and effect sounds like cause and effect. It's a play on words. That's funny stuff.
Warning: Following legal advice the listener should be aware that the views and information shared in this podcast do not constitute professional advice or even unprofessional guidance. For God's sake consult someone who knows what they are talking about before making any changes to your farm management practices.
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Episode 6. Free honey, a faraway look and a copious flow of mucus.
Thursday, November 27, 2025 • Duration 01:06:43
Hello listener. How's things?
You'll be relieved to know that this episode is much shorter than the last one and really delivers on the science. Yes, that's right; back by popular demand, this is the second episode of Lab Rat Jazz Club and, this time, we hear about the work of the brilliant Professor Smith (he's the best, Paul loves him).
The Berkley paper on pain thresholds; women (not girls) vs men (cited 1,673 times!). This could be behind a paywall, but there's at least an abstract. Berkley, K.J., 1997. Sex differences in pain. Behavioral and brain sciences, 20(3), pp.371-380. https://doi.org/10.1017/S0140525X97221485
The career of our other hero; Justin Schmidt. Starr, C.K., Jacobson, R.S. and Overal, W.L., 2024. Justin Schmidt's originality. Journal of Hymenoptera Research, 97, pp.297-306. https://jhr.pensoft.net/article/121387/
Episode 5. Chain drives, mushroom tea and a professional.
Where to begin listener? Well, you could begin about 45 minutes into this unfeasibly long episode, because that's how long it takes to get to this fascinating research paper and it's 45 minutes of your life you will never get back.
Salomon, M.J., Demarmels, R., Watts-Williams, S.J., McLaughlin, M.J., Kafle, A., Ketelsen, C., Soupir, A., Bücking, H., Cavagnaro, T.R. and van der Heijden, M.G., 2022. Global evaluation of commercial arbuscular mycorrhizal inoculants under greenhouse and field conditions. Applied Soil Ecology, 169, p.104225. https://www.sciencedirect.com/science/article/pii/S0929139321003486
Apologies listener, you will only find the abstract and some section snippets, because the full paper is behind a paywall. Michael just tried to make me feel better by saying, "Surely no-one actually reads them, do they?"
This is the review paper that sets off all the nonsense in the first 45 minutes; the one with the peloton. It's got an abstract.
We promise that we will definitely do more science next time with data, graphs, tables and statistics. Well, not exactly next time. Next time (Ep. 6.) is Ep. 2. of Lab Rat Jazz Club. But, definitely the one after that. Episode 7. will be just science with no funny business. Promise.
Three punch lines; in one joke; brilliant.
Episode 4. A fun guy, a great judge of character and a very interesting three years drawing moss.
Wednesday, September 24, 2025 • Duration 01:12:32
Do you like your agricultural scientific research sumarised in easily digestible form or described at length in mind numbing detail? Oh, OK, nevermind; how about this then? Have you ever asked yourself what happens to arbuscular mycorrhizal fungal mediated phosphate supply when stressed plants stop supplying sugar-like carbon molecules to the fungi? No? Seriously? Nevertheless, buckle up and welcome to the School of Biology at Leeds University, West Yorkshire. Eee by gum, ey up, etc.
Michael makes a couragous attempt at humour, based on the marvelous premise that AMF (the phosphate supplying fungi) sounds a bit like EMF (the 90s band), but Paul doesn't understand what's happening and it falls a bit flat. We alienate another potential sponsor and the cats continue to carry the show.
Links
The main paper; Charters, M.D., Sait, S.M. and Field, K.J., 2020. Aphid herbivory drives asymmetry in carbon for nutrient exchange between plants and an arbuscular mycorrhizal fungus. Current Biology, 30(10), pp.1801-1808. https://www.cell.com/current-biology/fulltext/S0960-9822(20)30294-3
Great judge of character, Professor Katie Field on The Infinite Monkey Cage, with Professor Brian Cox and popular fungus botherer Dr Merlin Sheldrake (not kidding). https://www.bbc.co.uk/sounds/play/p0fwww6q
The Swiss work on how AMF protects maize against pathogenic fungi. Lutz, S., Bodenhausen, N., Hess, J., Valzano-Held, A., Waelchli, J., Deslandes-Hérold, G., Schlaeppi, K. and van der Heijden, M.G., 2023. Soil microbiome indicators can predict crop growth response to large-scale inoculation with arbuscular mycorrhizal fungi. Nature Microbiology, 8(12), pp.2277-2289. https://www.nature.com/articles/s41564-023-01520-w
Episode 3. French cigarettes, the Motown joke and there's someone Scottish that's really annoying me.
Thursday, August 28, 2025 • Duration 01:01:55
Bored with multi species pastures episodes? Welcome to North America dear listener and a research paper that is definitely not about multi species pastures (although they get a mention in the intro). No spoilers, but it's proper science done by proper scientists.
As well as the science, Michael reveals that he is a High Noon guy, Paul admits a life long obsession with Katy Jurado and Black Cat disgraces himself on mike (on microphone, not on Michael).
Links
Jim and Stan's paper. Polston, J.E. and Glick, S.D., 2011. *****-******* context preference following ******* conditioning in ****. Behavioral neuroscience, 125(4), p.674. https://pmc.ncbi.nlm.nih.gov/articles/PMC3144275/
Carbon Calling 2023. Nikki Yoxall (head of research at Pasture for Life and regenerative farmer), Amy Hughes (podcaster and AHDB engagement lead for beef and lamb), Claire Whittle (regenerative consultant and vet) and Sarah Langford (author, lawyer and farmer) talk about their experiences within the agriculture sectors and being in leadership roles. They are brilliant. They say things that need saying and say them with clarity and passion. Boys and men who work in agriculture really need to listen to this. It basically finishes at 49 minutes and 50 seconds; no need for anyone to listen after that. So, just turn it off at that point. That's 49 minutes and 50 seconds. Please. Carbon Calling Panel
Episode 2. Farmer jail, the first rule of ecology club and carry on with your dull stuff.
Thursday, July 31, 2025 • Duration 01:21:35
We're staying in Ireland for Episode 2 and talking about a research paper that looks at four different pasture types (permanent pasture, perennial ryegrass, a six species mixture and a twelve species mixtures) under grazing. They measured yields, nutritive value and how plant species persisted and it's all fascinating stuff (it helps, if you keep telling yourself that).
There's more. Paul cries at a boat. Michael reveals his Joel Williams man-crush. And there's four jokes.
Shackleton, J., Boland, T.M., Kennedy, J., Grace, C., Beaucarne, G., Kirwan, S.F., Schmidt, O. and Sheridan, H., 2024. Annual and seasonal dry matter production, botanical species composition, and nutritive value of multispecies, permanent pasture, and perennial ryegrass swards managed under grazing. Grass and Forage Science, 79(4), pp.630-650. https://onlinelibrary.wiley.com/doi/full/10.1111/gfs.12691
This is the Dee et al (2023) paper about how diversity (species richness) affects yields in grasslands. It's probably behind a paywall, but essentially they look at previous studies, take confounding factors into account, and integrate the results to get to a conclusion, which is; "Contrary to many prior studies, we estimate that increases in plot-level species richness caused productivity to decline: a 10% increase in richness decreased productivity by 2.4%."
Dee, L.E., Ferraro, P.J., Severen, C.N., Kimmel, K.A., Borer, E.T., Byrnes, J.E., Clark, A.T., Hautier, Y., Hector, A., Raynaud, X. and Reich, P.B., 2023. Clarifying the effect of biodiversity on productivity in natural ecosystems with longitudinal data and methods for causal inference. Nature Communications, 14(1), p.2607.
Episode 1. Five billion, there's no snakes in Ireland and an upside down graph.
Season 1 · Episode 1
Thursday, June 26, 2025 • Duration 01:13:42
Episode 1 dives into the science with an Irish research paper that looks at the yields of multi species pastures (along with the various different plant species that go into them) at several levels of Nitrogen (including zero). Which grasses work best in different systems? Why bother with Plantain and Chicory? Which plants drive yield?
There's some chat about ewes and Red Clover and there's a smell under the table.
Link to an early UK study into red clover and ewe fertility; Newton and Betts 1973. Still behind a pay wall, but you can see the abstract without paying.
The Prologue; contract work, wild animals and he knows who he is.
Season 1
Thursday, June 26, 2025 • Duration 43:08
Michael and Paul introduce themselves and explain why the world needs yet another farming podcast (it's a science podcast). There's bits about their farms, the other stuff they do and how science works and, for no obvious reason, a foray into the world of arbuscular mycorrhizal fungi.
Episode 7. Folk dancing, pocket meat and the Malmo shipyards.
Thursday, December 25, 2025 • Duration 01:45:15
This festive episode comes out on 25th December 2025, so Happy blooming Christmas listener. If you're anything like me, the morning so far will have been; 1. Put the turkey in the oven around 06.00 hrs; 2. Check round the stock, 3. Get back to the house in time for a late morning snifter, 4. Check how the turkey is doing, 5. Turn the oven on, 6. Explain that Chistmas dinner is running late.
There's some robust swearing in this one listener, including the big swear at around nineteen minutes in. Sorry about that. We know a lot of people don't like the big one, but think it's canonically justified in this case. We'll try to avoid it in the future.
The original recording included my favourite ever Christmas joke, but Michael cut it out and burned the tape. I thought it was funny, but he explained that being funny isn't always enough to avoid being taken off air. We have exchanged Christmas presents. I don't understand why I received a £50 voucher for therapy, but Michael says that me not understanding that there is a problem is "just another symptom". Micheal has only very recently realised why he received a dictionary with the word "canonically" underlined.
As promised, this month we're in Denmark and looking at Nitrogen transfers from legumes into grasses and herbs. Which legumes are good at fixing? Which are good at transfering Nitrogen to neighbouring plants? Which non legumes are good at acquiring the Nitrogen? Only one way to find out the answers listener.
Actually, there is another way. If you just read the paper, you don't have to listen to the chaos and the big swear. Here it is. Pirhofer-Walzl, K., Rasmussen, J., Høgh-Jensen, H., Eriksen, J., Søegaard, K. and Rasmussen, J., 2012. Nitrogen transfer from forage legumes to nine neighbouring plants in a multi-species grassland. Plant and soil, 350(1), pp.71-84. Nitrogen transfer from forage legumes to nine neighbouring plants in a multi-species grassland | Plant and Soil
Unfortunately, once again, it's behind a paywall. Sorry about that. I only realised at the last minute. Karin has very very kindly messaged us to say that if you want a copy of the full paper, she will send you one. You will need to email her on to request a copy.
Episode 8. A pirate, a confidence player and everyone's right; animals are complicated.
Wednesday, January 28, 2026 • Duration 01:32:15
Happy New Year listener. Eight episodes in (hard to believe for many reasons) and it's a bit different this month. There's absolutely no big swears; there's a few mediums, but not the big one. And also because we talk about lots of research papers addressing two subjects; small cows and short tails in sheep. Listeners to Michael's "exceptional value" Pasture Pod Patreon channel will have heard about these slightly niche topics before. Do smaller cows cause less damage to soil in pastures than heavier cows? Are the intakes of cows proportional to their weight? If you breed for short tails in sheep, will you impact lamb weights and spine lengths? These are the questions that keep Michael awake at night.
Please email your questions for the authors of the papers that we have discussed. Subject to the restraining orders, we'll try to get them lined up for Episode 12. Feel free to email in with any other questions or suggestions. Please start your emails with this phrase, "Dear Michael, loving the show. You are my favourite. It's only a shame that the other one keeps interupting you. You're the best. I love you. Oh my goodness, you're so handsome." Michael doesn't read the show notes so it will be a lovely surprise for him and make everybody else's life that bit easier.
See the Episode 7. shownotes for how to get in touch with Karin.
The three papers on the ground effects of heavy vs light cows
Episode 9. Mr Tickle, a cloud of low energy photons and Tom Cruise is going to come round and punch you.
Thursday, February 26, 2026 • Duration 01:40:01
Howdy, yee-haw and yippee-ki-yay buckaroos. Get your ears on, because we're headed west of the Pecos for the rootin' tootin' episode 3. of Lab Rat Jazz Club, where things are fixing to get plumb loco down in the lab. Hot-diggerty-dawg. As usual, there's the odd cuss word, but not the big one.
Email questions, comments, suggestions and Michael Blanche fan mail to cowsandeffectpodcast@gmail.com. You should probably open with; "Dear Michael, loving the show; oh my goodness, you are so fab (etc, etc.)"
We really can't be arsed with the admin for social media or fending off all the inevitable and well deserved online abuse, so help us out listener. In the unlikely event that you 1. enjoy the podcast and 2. don't mind people finding out that you enjoy the podcast; then tell your friends. You know the drill by now; "Have you heard about Cows and Effect? It's a farming podcast with the charming, handsome and and brilliant Michael Blanche. You know, the guy from The Pasture Pod and that time thing. He's amazing. I love him. There's another one, but I've forgotten his name. It doesn't matter; did I say it's got Michael Blanche in it?"
Somehow, we keep coming back to polar explorers and we finally got around to Scott. Links to short films about Scott's last expedition.
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The British Society of Soil Science webinar with Dr Anne Bhogal and Professor Richard Bardgett; see proper scientists putting themselves out there and talking to normal people. https://www.youtube.com/watch?v=RggdJPe6nio Don't tell Professor Bardgett (eminent respected academic, titan in his field, behemoth, etc), but Paul thinks that the evidence that biodiversity (species richness) causes agroecosystem productivity is weak, because he's been thinking about it for almost a year now.
The paper about soil and bacteria and fungi and that sort of thing. Howe, J.A., McDonald, M.D., Burke, J., Robertson, I., Coker, H., Gentry, T.J. and Lewis, K.L., 2024. Influence of fertilizer and manure inputs on soil health: A review. Soil Security, 16, p.100155. https://www.sciencedirect.com/science/article/pii/S2667006224000297
The it's-a-network paper that shows unstressed plants transfering extra Carbon to AMF, which makes up for neighbouring stressed plants being a bit crap. Durant, E., Hoysted, G.A., Howard, N., Sait, S.M., Childs, D.Z., Johnson, D. and Field, K.J., 2023. Herbivore-driven disruption of arbuscular mycorrhizal carbon-for-nutrient exchange is ameliorated by neighboring plants. Current Biology, 33(12), pp.2566-2573. https://www.cell.com/current-biology/fulltext/S0960-9822(20)30294-3
Here's the Raedts and Langworthy plantain paper. It's behind a paywall. Sometimes if you Google the title, you can find a free copy on the interweb somewhere. If not, go to the next one.
Raedts, P. and Langworthy, A., 2018. Establishing plantain in spring in existing perennial ryegrass pastures in northern Tasmania. Animal Production Science, 60(1), pp.114-117. https://www.publish.csiro.au/AN/AN18575
This is the open access paper on establishing plantain.
Bryant, R.H., Dodd, M.B., Moorhead, A.J., Edwards, P. and Pinxterhuis, I.J., 2019. Effectiveness of strategies used to establish plantain into existing pastures. Journal of New Zealand Grasslands, pp.131-138. https://www.nzgajournal.org.nz/index.php/JoNZG/article/view/406/63
Our expertise in internet stalking of scientists revealed that this is where Karin works now. It's Weltacker Berlin and they all look like they are having fun. Weltacker Berlin | Weltacker . Weltacker is a global agroecology demonstration and education organisation (the Berlin site was the first). They are not for profit (which definitely aligns them with our sort of farming). Check it out. Welcome to 2000m2 .
And our old mate Frank, FRANK, B. 1889. Ueber die Pilzsymbiose der Leguminosen. Ber. Deut. Bot. Gesell., 7: 332-346, 1889. Ber-Deutschen-Bot-Ges_7_0332-0346.pdf
Two books and a couple of papers on how much cows eat.
The AFRC book
Alderman, G. and Cottrill, B.R., 1996. Energy and protein requirements of ruminants.
The review paper that says that the AFRC books under estimates beef cow intakes and needs revisions. Cabezas-Garcia, E.H., Lowe, D. and Lively, F., 2021. Energy requirements of beef cattle: Current energy systems and factors influencing energy requirements for maintenance. Animals, 11(6), p.1642.https://www.mdpi.com/2076-2615/11/6/1642
The paper from french France that says that Paul's cows are the best. Sepchat, B., D'hour, P. and Agabriel, J., 2017. Production laitière des vaches allaitantes: caractérisation et étude des principaux facteurs de variation. INRAE Productions Animales, 30(2), pp.139-152. https://productions-animales.org/article/view/2240/4630
The INRA book. Noziere, P., Sauvant, D. and Delaby, L., 2018. INRA feeding system for ruminants (pp. 640-p). Wageningen Academic Publishers.
Order it from your local independent book seller or; Amazon link
Hannah's paper. Hummelchen, H., Wagner, H., Brügemann, K., König, S. and Wehrend, A., 2025. Effects of Breeding for Short‐Tailedness in Sheep on Parameters of Reproduction and Lamb Development. Veterinary Medicine and Science, 11(1), p.e70138. https://onlinelibrary.wiley.com/doi/full/10.1002/vms3.70138
A big sample size in this one; 57,760 lambs. Hodge, M.J., Brown, D.J. and Walkom, S.F., 2025. Genetic evaluation of tail length in Australian sheep. In Proceedings of the AAABG 26th Conference (p. 407). Association for the Advancement of Animal Breeding and Genetics. https://www.aaabg.org/aaabghome/AAABG21papers/Greeff21237.pdf
Well done if you got this far. I'm going to have a lie down.
