Wheat (Triticum aestivum L.) Cultivar Selection Affects Double-Crop and Relay-Intercrop Soybean (Glycine max L.) Response on Claypan Soils

Table 8

Monocropped (MC), double-cropped (DC), and relay-intercropped (RI) system wheat yields, soybean yields, receipts, expenses, and gross margins. Data were averaged over years.

Soybean cropping system	Wheat cultivar and row spacing	Soybean cultivar	Wheat yield	Soybean yield	Receipts	Expenses	Gross margins
			kg ha^-1		$ ha^-1
MC	None	H431 NC	0	3480	1104	387	717
	None	H431 ITC	0	3480	1104	419	684
	None	DK 38–52	0	3360	1065	386	679
DC	Pioneer 25R37, 19 cm	H431 NC	4460	1780	1521	674	847
	Pioneer 25R37, 38 cm	H431 NC	4070	1820	1449	671	778
	Ernie, 19 cm	H431 NC	3320	1820	1288	665	623
	Ernie, 38 cm	H431 NC	2730	1880	1180	661	519
	AgriPro 502 CL, 19 cm	H431 NC	3110	1790	1232	663	569
	AgriPro 502 CL, 38 cm	H431 NC	2230	1770	1039	656	383
RI	Pioneer 25R37, 38 cm	H431 NC	3580	1720	1313	667	647
	Pioneer 25R37, 38 cm	H431 ITC	3560	2240	1473	703	770
	Pioneer 25R37, 38 cm	DK 38–52	3480	1500	1220	664	556
	Ernie, 38 cm	H431 NC	1960	2290	1145	658	487
	Ernie, 38 cm	H431 ITC	2110	2340	1195	692	503
	Ernie, 38 cm	DK 38–52	2310	1890	1094	658	437
LSD (𝑃=.01)			400	450	170	5	165

aAbbreviations: ITC, Intellicoat; NC, Noncoated.