Ionica SmeetsYearly required poetry reading in the Nobel week.
@JWvanGroenigen
- 170 Followers
- 142 Following
- 120 Posts
Tesselaar | Soil bio-geo-ferti-chemi-cologist | Professor, Wageningen University | Chair Editors in Chief | Geoderma | N, P, C cycles | Earthworms
This is the number of publication over time on the soils of the Tibetan Plateau, the largest and highest plateau in the world. At this rate, all the soil sampling going on may soon make it the world's lowest plateau....
(Quick and dirty analysis on WoS with query '"Tibetan Platea" and Soil')
(Quick and dirty analysis on WoS with query '"Tibetan Platea" and Soil')
Ik sta altijd te klungelen bij de glasbak. Ligt het nou aan mij of is 95% van het gekleurde glas bruingroen!?!?
Laura HelmuthA survey from Nature found that about half of scientists who used to use Twitter have cut back or quit it entirely & half are using other platforms. It's great to see you here instead! https://www.nature.com/articles/d41586-023-02554-0
Casper Albers ✅Omdat iedereen over Omtzigt post doe ik het ook.
Pieter Omtzigt doet mee maar wil niet te groot worden. Zeg, bv. maximaal 10 of 15 zetels. Dit kan ruwweg op drie manieren, elk met z'n eigen voor-/nadelen:
1. Zichzelf impopulair maken
NSC peilt nu op tientallen zetels. Maar er zijn nog een paar maanden om daar wat aan te doen. Citeer Mao of Hitler of ren naakt over de Oude Markt in Enschede, en je keldert wel in de peilingen.
Nadeel: je moet Mao of Hitler citeren of naakt over straat.
1/n
Struvite is not only a P fertilizer, it also contains significant amounts of N. In this nice paper, PhD students Zhongchen Yang &
Laura Ferron, & MSc student Angela Sievernich show that #N2O emissions from #struvite are low, and depend on the soil #phosphorus status. https://doi.org/10.1007/s11104-023-06036-0 #OpenAccess
Laura Ferron, & MSc student Angela Sievernich show that #N2O emissions from #struvite are low, and depend on the soil #phosphorus status. https://doi.org/10.1007/s11104-023-06036-0 #OpenAccess
Nitrous oxide emissions after struvite application in relation to soil P status - Plant and Soil
Purpose Although struvite (MgNH4PO4·6H2O) is mostly considered to be a novel phosphorus (P) fertiliser, it does contain a significant amount of nitrogen (N). Yet, relatively little is known about the soil N dynamics in struvite-amended soils. Here, we focus on how struvite application impacts emissions of the greenhouse gas nitrous oxide (N2O), in relation to soil P status. Methods We conducted a 54-day greenhouse pot experiment on two similar soils with different P status (“low-P soil”; “high-P soil”) seeded with Lolium perenne L. We applied seven fertiliser treatments (Control; Struvite granules; Struvite powder; Urea; Triple superphosphate (TSP); TSP + Struvite granule; TSP + Urea). Except for the unfertilised Control and the TSP treatments, N application rate was 150 kg N‧ha−1. Nitrous oxide (N2O) fluxes, aboveground yield, plant N and P uptake and readily plant-available soil N and P contents were measured. Results In the low-P soil, none of the fertiliser treatments induced a significant increase in N2O emission compared to the control. In the high-P soil, struvite application resulted in lower emissions than urea application, statistically not different from the control treatment. Struvite powder significantly increased both plant N and P uptake compared to granular struvite and the resulting yield was similar to conventional fertilisation (TSP and Urea). Any struvite application also resulted in lower readily plant-available soil nitrate contents than urea. Conclusion Our results suggest that struvite fertilisation can reduce the risk of gaseous N losses without compromising agronomic performance. Pulverizing struvite granules further promotes its dissolution, which could be useful for crops with early nutrient needs.
ResourceDe Saoedische universiteiten King Saud University (KSU) en King Abdulaziz University (KAU) verleiden topwetenschappers om voor fors geld de Saoedische universiteit als hoofdwerkgever te vermelden. Ook Wageningse hoogleraren zijn benaderd. Eentje van hen hapte toe. https://www.resource-online.nl/index.php/2023/05/08/onderzoek-naar-contract-met-saoedis/
Soms staan we als wetenschappers voor lastige ethische dilemma's. Dit was niet zo'n geval! Onbegrijpelijk dat ook Nederlandse topwetenschappers zich hiervoor lenen. Ik ben blij meegewerkt te hebben aan dit artikel van de @volkskrant!
Dean Burnett (that brains guy)I appreciate the optimism, guys, but I'm fairly confident it's going to be Charles.
I made it into @el_pais! Glad to have contributed to this article about Saudi Arabian universities buying the reputation of western scientist to boost their ranking. This is not only happening in Spain, and I'm looking forward to similar investigative journalism in other countries (including NL). Because, yes: it is a disgrace! https://english.elpais.com/science-tech/2023-05-04/saudi-scientist-tells-colleagues-stop-this-academic-fraud.html
