Wheat (Triticum aestivum L.) Cultivar Selection Affects Double-Crop and Relay-Intercrop Soybean (Glycine max L.) Response on Claypan Soils
Table 2
Custom crop-production expenses [32] and returns [33, 34] used to calculate gross margins.
Crop-production expenses and returns
Wheat
Soybean
Planting ($/ha)
$36.56
$14.78
Average fertilizer application ($/ha)
$24.55
$12.28
Average fertilizer rate ($/ha)
100-63-82 ($206.49)
10-63-82 ($102.75 MC soybean)
Seed ($/ha)
$75.48
$115.60 (coated RI and MC)
(personal communication, Claude Butt, Landec Ag.)
$82.99 (noncoated DC and MC)
Weed control
Custom application ($/ha)
$0
$27.81 (MC), $13.91 (DC and RI)
Herbicide ($/ha/application)
$0
$14.82
Harvest ($/ha)
$65.90
$66.69
Grain hauling ($/kg)
$0.008
$0.008
Grain receipts ($/kg)
$0.21
$0.32
Abbreviations: DC, Double-crop; MC, Monocrop; RI, Relay-intercrop. Fertilizer cost was an average of local distributors in the fall, 2009. Soybean seed cost was the actual cost at the time of this research. Relative seed cost differences between coated and noncoated soybean were assumed to be similar.
