nitrogen

My soybeans are six to eight inches tall. Would it be okay to topdress them with 100 pounds per acre of ammonium sulfate?

While ammonium sulfate fertilization is often recommended pre-plant on low organic matter soils and, more recently, also late-season (R3) on high-yield potential soybeans, early-season nitrogen fertilization is normally only recommended in cases of poor nodulation.

How high can I go with an ammonium sulfate starter fertilization on corn in order to avoid fertilizer burn?

Salt toxicity, or fertilizer burn, is affected by moisture, temperature, soil type and fertilizer placement. In order to avoid salt injury, a rule of thumb to follow is to stay within the following maximum amounts of nitrogen

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

How does ammonium sulfate compare against urea in wheat production?

One of the most obvious benefits of ammonium sulfate when compared to urea is that, in addition to nitrogen, it also supplies sulfur. Wheat research has shown that sufficient sulfur levels are needed for maximum test weights,

Can we broadcast 200 pounds of ammonium sulfate just ahead of planting in no-till corn? Is there any problem with seed germination or burn?

Yes, this is certainly a fine practice. You do not need to worry about seed germination or burning at those levels. It would equate to only 42 pounds of nitrogen per acre, which would even be fine

How does ammonium sulfate compare with urea-ammonium nitrate solutions when it comes to topdressing nitrogen?

Topdressing dry ammonium sulfate is a more efficient alternative for several reasons: Given that it does not have the initial basic reaction of urea and urea-based products upon application, it is less prone to loss as ammonia

How do ammonium sulfate and elemental sulfur compare when it comes to their effect on soil pH?

When either ammonium sulfate or elemental sulfur is applied to provide the sulfur needs of a crop – with the nitrogen supplied by ammonium sulfate or other ammonium nitrogen fertilizers such as anhydrous ammonia, urea, or ammonium

How much nitrogen does it take to produce a bushel of soybeans?

It takes roughly five pounds of nitrogen to produce one bushel of soybeans. Normally, soybeans can get most of their nitrogen from the air, although this year we have heard several reports of less than optimum nodulation

My young soybean crop looks light green. I dug up some plants and can hardly see any nodules on the roots. Is it too late to apply ammonium sulfate?

Lack of nodulation is a particularly common problem on fields that have not been on soybeans the previous few years. If nodulation is lacking, it is best to apply at least 60 pounds of nitrogen as a

Can soybeans benefit from ammonium sulfate fertilization?

As legume crops, soybeans normally get most of their nitrogen from the atmosphere. Nevertheless, about 100 pounds of ammonium sulfate at planting can provide the crop a boost before root nodules are actively fixing nitrogen. Ammonium sulfate also