A Method for Application of Nitrogen-15-Labeled Anhydrous Ammonia to Small Plots1
- C. A. Sanchez and
- A. M. Blackmer2
A method is described that permits precise application of anhydrous ammonia in bands to plots of the size often used in 15N-tracer studies. This method involves placing a stainless-steel capillary tube in the soil where the ammonia is to be banded, attaching this tube to a cylinder of ammonia, and then pulling the tube through the soil with deposition of ammonia as an even band. The procedure has marked advantages over previously described methods because it can be used with mixtures of anhydrous ammonia and nitrificaton inhibitors and because the soil environment at the point of application is representative of the soil environment found when a conventional applicator is used.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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