Interesting topic.
Question, when applying dry fertilizer, how effective is it if not tilled in?
I've always believed you MUST till it in?
If u get TREATED UREA…. No need to till and will go right into the soil. Done. Most people till for nitrogen & absolutely not needed. Other options for no till on Nitrogen is: ESN (polymer coated urea), liquid N & terminating legumes that fixed Nitrogen.
P&K are not very mobile in the soil so they do have a better case for tillage and those 2 are usually not thought of as needing tillage. But, better case for p&k tillage vs N.
Putting p&k on top over the years has not created issues for me. My deeper soil tests have plenty of P&K … so I don’t till in.
The problem with both herbicide & fertilizer is often the salt contents. For sure with fertilizer.
On herbicides….. the downside there is the extent that it instantly kills most or all plant life (which we want & ideally have plenty of other crops still growing) & by definition that reduces fungal, microbe & beneficial bacteria in the soil. It can be fixed with more cover crops & more diverse planting & with compost or manure.
If a guy could say “I got 2 downside issues… herbicide & fertilizer…. Which should I fix first?” One route I took (not saying it’s right) is: I switched conventional fertilizer to manure & compost. That made huge difference. It’s not practical for many. The other way to “reduce herbicides” I personally use (again- not saying it’s right or ideal - Just what I do)…. More cover crops & second: PRE-EMERGENTS. Pre-emergents probably have some downside but it often is saving 2 other sprays with more gly, etc.
PRACTICAL & doable for most: 1) NO TILL 2) as much for covers & diversity & over seeding as possible & 3) pre emergents to reduce spray. Is this perfect? No. But it’s heck of a lot better than 90% of ground & it will BUILD soil done right. Going in right direction for sure!!!
Last- I avoid fungicides & insecticides unless it’s worst case rare scenario.
There is practical solutions here!!!! Might be 4-5 things guys can do…. 1 or 2 is better than none!!! Or start with 1 thing and add 2nd & 3rd over time.