Nitrogen Fertilizer Sources - Testing Growth and Color
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- čas přidán 22. 04. 2024
- In this episode of SoiLab, Matt tests 3 different sources of nitrogen fertilizer compared to an untreated control. Urea, Ammonium Sulfate, and Protein Hydrolysate were compared.
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Great comparison. Ammonium sulfate is my choice here in Quincy WA, where we have high pH soils. I have started using a 16-0-0 soybean hydrolysate product for the back lawn, to keep things organic. Very similar results to milorginite when paired with iron.
Thanks for sharing your insights on the Soybean Hydrolysate and Iron combination! I think our subscribers can really benefit from sharing this experience.
Would love to see a test run on calcium silicate - Wollastonite. On tomatoes and maybe lawn grass. I’ve seen dr Bruce bugbee talk about the benefits of using it as a replacement for lime and I’ve read a couple of studies where it is being used in agriculture. It seems to be gaining popularity online with people using it in gardens and lawns but Ive not seen a true test run where it was mixed into a soil medium or amounts needed to see any benefit.
You are the best ❤❤
I know it sounds strange, but could you test Diesel Exhaust Fluid (DEF)? It is supposed to be very pure urea with purified water. It's effectiveness and if there is anything else in there except urea.
I clicked on this faster than my Dominoes Pizza App!
If your ph is low. Won’t ammonium sulfate reduce it more making root uptake worse?
How far into the spring should we wait before applying our first application of fertilizer? Cool season grass with a mix of TTTF, PRG and KBG. Located in NJ, specifically 07036. Tnx.
If you are not seeing a green-up in your lawn already, I would go ahead and get your first application down now.
I apply my first Spring fertilizer on my tall fescue lawn after the second mow which is usually around mid-March in VA. My assumption is that the second mow is a good indication that the grass is serious about waking up. I use around 0.375 lbs of N per 1,000 sq ft. in three applications a month apart. That provides a steady source of Nitrogen without huge growth spurts and keeps the grass green and healthy going into the heat of summer. I'd be interested in hearing what others are doing with their Spring applications.
I had to re-watch the video. It wasn’t clear that the synthetic ferts are controlled-release ones. I’m curious… how often are the lab experiments watered? Do you mimic a typical homeowner’s watering habits?
The fertilizers used in the study were not slow/controlled release, with the exception of the protein hydrolysate being an organic source. We were rather comparing the growth curve of the turf as the different nutrient sources provided available nitrogen forms to the roots. The plots were watered every three days to maintain adequate moisture under a controlled environment, so less than a homeowner might water during warmer months.
@@SoiLab Your comment at 1m40s is confusing. When you commented about the ammonium sulfate, you said its growth curve “wasn’t like you expect to see with those other quicker release, non-coated products”.
Essentially, buy 21-0-0 and spray it.