International Journal of Agronomy

Research Article

Assessing the Economic Impact of Inversion Tillage, Cover Crops, and Herbicide Regimes in Palmer Amaranth (Amaranthus palmeri) Infested Cotton

Table 6

Influence of tillage, cover crop, and herbicide treatments on net returns (US ha⁻¹) by year.


Treatment	2009	2010	2011
Treatment	US ha⁻¹

Tillage system
Noninversion	261	716	1650
Inversion	906	729	1537
LSD ()	257	NS	NS
Cover crop
Clover	780	804	1432
Rye	504	660	1492
Fallow	468	703	1857
LSD ()	NS	NS	240
Herbicide regimes
PRE	339	755	1576
POST	592	651	1587
PRE+POST	820	761	1618
LSD ()	194	NS	NS

The inversion tillage (IT) treatment consisted of one pass with a moldboard plow immediately followed by one pass with a disk and one pass with a cultivator in fall 2008. In 2010 and 2011, the IT plots were managed the same as the noninversion (NIT) plots. The IT and NIT plots were subsoiled each spring prior to planting.
LSD (least significant difference) for comparing any two means within year. NS is not significant.