KindHarvest summary: Plants obtain nutrients through a living soil system as well as from nutrients dissolved in soil water. Agronomist James Hoorman argues that roots, microbes, organic compounds and mineral surfaces work together, and that management which supports this biology can improve nutrient efficiency.
Nutrients move through a biological system
Microorganisms fix atmospheric nitrogen, decompose organic material and interact with roots and minerals. Plants also release compounds around their roots and use active transport to acquire nutrients. Because only small amounts of some nutrients are dissolved in soil water at any one time, biological cycling and access to mineral reserves matter.
Why soil condition matters
The article warns that compaction restricts air and rooting, while concentrated soluble fertilisers can alter microbial activity and increase the risk of loss through leaching or denitrification. It presents these processes as reasons to look beyond the amount of fertiliser applied and consider how efficiently the soil–plant system retains and supplies it.
A management principle, not a universal prescription
Cover crops, reduced tillage, manure, compost and other carbon inputs can support soil organisms, but their results depend on climate, soil, crop and nutrient balance. Biological cycling can complement sound fertility planning; it does not justify abrupt input reductions without testing, crop monitoring and soil analysis. Related reading: how soil health affects nutrient management.
Source and credit
This KindHarvest Team brief summarises commentary by James Hoorman, originally published by Ohio’s Country Journal and republished by No-Till Farmer on 9 May 2022. Read the full No-Till Farmer article.