Relative Efficacy of Liquid Nitrogen Fertilizers in Dryland Spring Wheat

Table 2

Field activities and growing conditions, Conrad, Choteau, and Corvallis, 2012.

Field activity	Choteau	Conrad	Corvallis
Seeding date	April 24	April 18	April 15
Variety	Choteau	Choteau	Choteau
Seeding rate: seeds/ha	1.8 million	1.8 million	1.8 million
Herbicide	Bronate, Axial XL	Bronate, Axial XL	Bronate, Axial XL
Herbicide date	June 12	May 17	June 16
Sensing date	June 15	June 8	June 5
Top-dressing date	June 14	June 8	June 5
Harvest date	August 21	August 17	August 8
Average soil temperature °C	14.85	14.85	14.75
Average air temperature °C	14.25	14.25	15.75
Soil series	Scobey Clay Loam	Scobey Clay Loam	Burnt Fork Silt Loam
Soil N, kg ha^−1	31.7	39.5	31.7
Soil P, ppm	17	23	18
Soil K, ppm	287	423	345
Organic matter%	2.6	2.9	2.9
Soil pH	7.8	7.7	7.7