Now showing items 1-10 of 17
A summary of placement and fall versus spring application of nitrogen fertilizers
In 52 field experiments since 1973-74, the yield of barley grain without N averaged 1570 kg/ha, but the yield was increased by fall and spring application of incorporated urea (56 kg N/ha) to 2540 and 3470 kg/ha, respectively. ...
Long-term tillage, straw management and N fertilizer rate effects on crop yield, N uptake and N balance sheet in a Black Chernozem
A field experiment (established in autumn 1979, with monoculture barley [1980-1990] and barley/wheat-canola-triticale-pea rotation [1991-2008]) was conducted on a Black Chernozem [Albic Agricryoll] silty clay loam soil ...
Unconventional methods of fertilizer placement to reduce losses of fall applied nitrogen
In two field experiments conducted in 1978-79, fall application of incorporated urea, or banded aqua ammonia, produced much less increase in yield and N-uptake than did spring application for barley grain. However, when ...
The rate of oxidation of elemental sulphur fertilizers
Uncropped field experiments were begun in June, 1979, and continued from 12 to 15 weeks after the addition of sulphur fertilizer on three soils, to determine the rate of conversion of elemental sulphur to soluble sulphate. ...
Influence of long-term application of N and S fertilizers (1980-2002) and liming in 1992 on dry matter yield of grass and soil properties in a Dark Gray Chernozem in north-central Saskatchewan
Most soils are deficient in plant-available N in the Prairie Provinces of Canada, and in the Parkland region, many soils are also insufficient in available S for high crop yields. Long-term field experiments, initiated in ...