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A Method for Application of Nitrogen‐15‐Labeled Anhydrous Ammonia to Small Plots
Author(s) -
Sanchez C. A.,
Blackmer A. M.
Publication year - 1987
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1987.03615995005100010054x
Subject(s) - anhydrous , ammonia , capillary action , nitrogen , tube (container) , deposition (geology) , tracer , chemistry , materials science , environmental chemistry , mineralogy , geology , composite material , organic chemistry , structural basin , physics , paleontology , nuclear physics
A method is described that permits precise application of anhydrous ammonia in bands to plots of the size often used in 15 N‐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.