Open AccessRELATIONSHIP OF NITRATE ACCUMULATION TO YIELD RESPONSE OF WHEAT IN SOME SASKATCHEWAN SOILS
Author(s) -
F. D. Cook,
F. G. Warder,
Joyce Doughty
Publication year - 1957
Publication title -
canadian journal of soil science/canadian journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 67
eISSN - 1918-1841
pISSN - 0008-4271
DOI - 10.4141/cjss57-013
Subject(s) - nitrate , soil water , agronomy , nitrogen , greenhouse , yield (engineering) , environmental science , correlation coefficient , chemistry , soil science , mathematics , biology , materials science , organic chemistry , metallurgy , statistics
The capacity of Saskatchewan soils to accumulate nitrate, as determined by a laboratory procedure, was investigated as a method for evaluating the response of wheat to nitrogenous fertilizers. The correlation coefficient between the field yield ratios (which are a measure of the response to nitrogen) and nitrate accumulation for 31 stubble fields was 0.846** and for 30 fallow-soils was 0.830**. Greenhouse experiments with soil samples from 31 stubble fields showed a high correlation (0.874**) between nitrate accumulation and nitrogen uptake by wheat plants during a 30-day growth period.It is considered that a significant increase from the application of nitrogenous fertilizers can be expected when the nitrate accumulation value is below 50 p.p.m. N in soil from stubble fields or 40 p.p.m. N in fallowed soils.