--- title: Blog - Proba | Project description: Project | Food companies are asking for verified Scope 3 reductions. It starts with fertilizer. Read Proba's blogs on fertilizers, insetting, chain of custody models, sustainability and everything else. --- [![Proba. In your supply chain, we make the voluntary carbon market work for you.](https://proba.earth/hs-fs/hubfs/positive.png?width=185&height=53&name=positive.png "Proba. 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[![](https://proba.earth/hubfs/Blog%20featured%20image%20(24).png)](https://proba.earth/probas-blog/landor-lowering-the-carbon-footprint-of-fertilizer) [![](https://proba.earth/hubfs/Blog%20featured%20image%20(24).png)](https://proba.earth/probas-blog/landor-lowering-the-carbon-footprint-of-fertilizer) ## [Landor: Lowering the carbon footprint of fertilizer](https://proba.earth/probas-blog/landor-lowering-the-carbon-footprint-of-fertilizer) 15 Sep 2026 [Proba](https://proba.earth/probas-blog/author/proba) [Read More](https://proba.earth/probas-blog/landor-lowering-the-carbon-footprint-of-fertilizer) [![](https://proba.earth/hubfs/Blog%20featured%20image%20(22).png)](https://proba.earth/probas-blog/walther-farms-better-numbers-better-potatoes) [![](https://proba.earth/hubfs/Blog%20featured%20image%20(22).png)](https://proba.earth/probas-blog/walther-farms-better-numbers-better-potatoes) ## [Walther Farms: Better numbers, better potatoes](https://proba.earth/probas-blog/walther-farms-better-numbers-better-potatoes) 3 Sep 2026 [Proba](https://proba.earth/probas-blog/author/proba) [Read More](https://proba.earth/probas-blog/walther-farms-better-numbers-better-potatoes) ![Subheading (5)](https://proba.earth/hs-fs/hubfs/Subheading%20(5).png?width=317&name=Subheading%20(5).png "Subheading (5)") [Laan van Kronenburg 14, 1183 AS Amstelveen](https://maps.app.goo.gl/aKif8v1k5m9h2zA37)   Food companies are asking for certified Scope 3 reductions. It starts with fertilizer. 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