What is the recommended timing for using ammonium sulfate as a starter fertilizer on soybeans?

The typical recommendation would be prior to planting. Nevertheless, if weather conditions prevent your from spreading it pre-planting, you may also apply it post-planting. Purdue university work has shown yield responses to 100 pounds per acre of

Is it possible to create a reservoir of sulfur in the soil through the continuous application of elemental sulfur?

Yes, it is possible to create a reservoir of sulfur through long-term application of elemental sulfur. Be aware, though, that elemental sulfur oxidation produces acidity. So, with time, it may gradually decrease soil pH to the point

Can I use ammonium sulfate on my vegetable garden?

Certainly! Like grain and forage crops, vegetables also need nitrogen and sulfur for photosynthesis and protein formation. As a matter of fact, many industrial vegetable growers include ammonium sulfate as part of their basal fertilization blend.

Over-application of poultry litter to fields across my region has resulted in extremely high phosphorus levels. Could this impact the availability of other nutrients?

Yes. Phosphorus is adsorbed to soil minerals in a stronger fashion than sulfur, so excessive phosphorus reduces sulfur efficiency as more sulfur is displaced via leaching. The organic phosphorus in litter may also reduce zinc availability.

Is there a link between sulfur and wheat protein?

Yes. As a matter of fact, hard red winter wheat research at Virginia Tech has shown that nitrogen and sulfur are key in obtaining increased grain protein quantity and quality. This makes sense given that both of

What is the type of sulfur in ESN® polymer-coated urea?

This is not the first time I have been asked this question – I assume the confusion comes from the “S” in its name. While polymer-coated urea does not supply any sulfur, it is very commonly blended

How deep in the soil should soil test samples for sulfur be taken?

Given that plant-available sulfur in the soil is mobile, the best way to go about taking soil samples for sulfur testing is to get soil as well as sub-soil samples and have them tested separately.

How would elemental sulfur compare against ammonium sulfate for decreasing soil pH from 7.3 to 6.3?

It depends on the rates used. Applied at rates that just cover a crop’s sulfur needs, neither one would do, regardless of the soil type. When thinking of these products as soil amendments, 200 to 400 pounds

Is ammonium sulfate good for pecan trees in Texas? If so, how much?

As a matter of fact, ammonium sulfate is recommended more than other nitrogen sources on high pH soils (common in Texas) because of its acidifying effect. It temporarily increases the availability of micronutrients, such as iron and

What are the advantages of ammonium sulfate versus ammonium thiosulfate?

Ammonium sulfate and ammonium thiosulfate, also known as ATS, are both very common nitrogen and sulfur sources in the dry and liquid fertilizer markets. From an agronomic point of view, I can think of a couple of advantages