Spring-Interseeded Winter Rye Seeding Rates Influence Weed Control and Organic Soybean Yield

Table 1

Field information and selected management practices in 2002 and 2003.

Field information and management practices	2002	2003
Tillage
Fall tillage	Chisel plow	Moldboard plow
Spring disk-harrow	—^a	1x
Spring field cultivated	3x	3x
Soybean planting date	June 5	May 29
Cultivar	Big Bubba	Big Bubba
Winter rye planting date	June 5	May 29
Cultivar	Forage Master	Forage Master
Rotary hoed^b	June 17, June 22	June 9, June 16
Stage of soybean development^c	VC, V1	VC, V1
Row cultivated^d	June 25, July 3, July 18	June 23, July 2, July 20
Stage of soybean development	V3, V5, V7	V3, V4, V6
Harvest date	October 10	October 12

^aNo treatment was applied.
^bAll treatments except the weedy check.
^cAs described in Fehr and Caviness [24].
^dAll 76-cm wide-row plots except the weedy check.