Tom Bruulsema

Science Consultant

[Tom Bruulsema @Science4RPN]

A well-written paper demonstrating "the importance of integrating regionally-tailored fertilizer source and timing within the 4R Nutrient Stewardship framework ... and the potential of EENFs to mitigate N2O emissions" https://t.co/W1RSJUBRcu

[Tom Bruulsema @Science4RPN]

For a global dataset on crop nutrient concentrations, see Ludemann, C.I., R. Hijbeek, M. Van Loon, T.S. Murrell, A. Dobermann, et al. 2022. Global data on crop nutrient concentration and harvest indices. : 41325939 bytes. doi: 10.5061/DRYAD.N2Z34TN0X.

[Tom Bruulsema @Science4RPN]

We also found grain P concentration increased with increasing soil test P and with yield. Wider datasets support removal coefficients of 0.3, 0.35 and 0.4 lb P2O5 per bushel for states in the western, central and eastern parts of the Corn Belt.

[Tom Bruulsema @Science4RPN]

We also found grain P concentration increased with increasing soil test P and with yield. Wider datasets support removal coefficients of 0.3, 0.35 and 0.4 lb P2O5 per bushel for states in the western, central and eastern parts of the Corn Belt.

[Tom Bruulsema @Science4RPN]

Crop removal rate is indeed important, but variable. Research across US Northeast states reported P concentration in corn grain ranging from 2.2 to 5.4 g P per kg (DM basis) - equivalent to 0.24 to 0.58 lb of P2O5 per bushel.
https://t.co/lxiatvlP1G

[Tom Bruulsema @Science4RPN]

Crop removal rate is indeed important, but variable. Research across US Northeast states reported P concentration in corn grain ranging from 2.2 to 5.4 g P per kg (DM basis) - equivalent to 0.24 to 0.58 lb of P2O5 per bushel.
https://t.co/lxiatvlP1G

[Terry Daynard @TerryDaynard]

Farmers like me, concerned about large inconsistencies in soil test measurements for P and K, might want to review this from the @ajmargenot team at U Illinois suggesting applications based on solely on removal rates.
https://t.co/PyAatO3EgZ

[Tom Bruulsema @Science4RPN]

A nice overview, and a brilliant set of classifications of the different plant nutrient elements!

Understanding the foundations of fertilizer recommendations https://t.co/HBGCHAEcTS

[Simon Maechling @simonmaechling]

I am proud to work in agriculture.

Higher yields saved land.
Higher yields fed billions.

How? Science.

→ Better seeds.
→ Better fertilisers.
→ Better farming techniques.

People who say “go back to nature” actually want “go back to hunger”.

[David Frum @davidfrum]

No, the meeting did not go badly for Ukraine. It exposed in the most undeniable, unequivocal way possible the pro-Putin commitments of the president and vice president. That was information Americans and allies needed to have clear before them.

[Garry Kasparov @Kasparov63]

No, Trump has destroyed America in the eyes of the world.

[Emmanuel Macron @EmmanuelMacron]

Il y a un agresseur : la Russie.

Il y a un peuple agressé : l'Ukraine.

Nous avons tous eu raison d'aider l'Ukraine et de sanctionner la Russie il y a trois ans et de continuer à le faire.

Nous, c’est les Américains, les Européens, Canadiens, Japonais et plusieurs autres.

Merci à tous ceux qui ont aidé et continuent. Et respect à ceux qui, depuis le début, se battent. Parce qu'ils se battent pour leur dignité, leur indépendance, pour leurs enfants et pour la sécurité de l'Europe.

[Sen. Bernie Sanders @SenSanders]

Trump berates Zelensky, the leader of a democratic country courageously fighting Russian imperialism, while he allies himself with Putin, a dictator who started the bloodiest European war in 80 years.

Sorry, President Trump. We believe in democracy, not authoritarianism.

[Friedrich Merz @_FriedrichMerz]

Dear Volodymyr @zelenskyyua, we stand with #Ukraine in good and in testing times. We must never confuse aggressor and victim in this terrible war. (FM)

[Brian J. Karem @BrianKarem]

I have covered presidential politics for 40 years. This was the most juvenile display by a President and Vice President I have ever seen. Other presidents treated their enemies with more respect. This is a low point and a dark day for the US.

[Food and Agriculture Organization @FAO]

🌱 Soil is much more than just dirt beneath our feet.

It is a living and breathing ecosystem that supports agriculture, biodiversity, water cycles and even our climate.

📹 Watch to learn why accurate soil and data information matters. 👇

#WorldSoilDay #SoilHealth #COP16Riyadh

[Jeff Vetsch @jvetsch2]

Robert L. Mikkelsen delivering the distinguished Leo Walsh lecture to a standing room only audience in San Antonio.

[Tom Bruulsema @Science4RPN]

I'm looking forward to talking about Fertilizer and Climate Mitigation at the ASA, CSSA, SSSA meetings in San Antonio, TX. Monday 11 November 8:45 am in Room 213A, Convention Center. Come join me! https://t.co/ldBWef23S8

[Tom Bruulsema @Science4RPN]

Nutrient Use Efficiency in Responsible Plant Nutrition https://t.co/WTrlk9nuyn

[Tom Bruulsema @Science4RPN]

Excellent progress! Losses of reactive forms of nitrogen from Canadian cropland decreased from 20% to 13% of total N inputs from 2001 to 2016--while crop nitrogen removal increased very substantially, even ignoring the drought years 2001 and 2002. https://t.co/pwchrD7rWy

[Intl Fertiliser Soc @FertiliserSoc]

The 2024 Brian Chambers award is now open for entries - for early career researchers in crop nutrition all around the world, and not just in universities. Now in its 10th year, entry involves just a 1 page form, + a poster for finalists. Info & entry form: https://t.co/aWXGlUmQ36

[Tom Bruulsema @Science4RPN]

Did you know that magnesium plays a special role in enhancing the quality of potatoes? Find out how... https://t.co/Oh4Rp8oypK

[Tom Bruulsema @Science4RPN]

Pure madness.

[Cyclone Farms @CycloneFarms]

#organic flamed yesterday , cultivate today , corn is already recovering from the burn #farming