Management of Vegetation by Alternative Practices in Fields and Roadsides

Table 8

End-of-season mass of shoots of weeds and ratings of efficacy of treatments with repeated applications of alternative practices in field plot research with annual and perennial vegetation (Field Experiment  2).

Treatment	Times repeated^†	Weed mass, g fresh wt		Visual index rating^§
Clove oil	1	2,174	860	0.3	1.0
	2	1,226	708	0.3	1.0
	3	496	415	0.3	1.0
Pelargonic acid	1	1,241	546	0.7	1.7
	2	1,128	353	1.3	1.3
	3	474	241	1.3	1.3
Citric acid-acetic acid	1	2,037	875	0.7	1.0
	2	924	776	1.3	1.3
	3	827	394	1.0	1.3
Citric acid	1	1,960	686	0	0
	2	1,779	753	0	1.0
	3	1,954	717	0	0.7
Flaming	1	1,046	381	4.7	4.0
	2	453	336	9.5	4.3
	3	150	90	9.5	4.7
LSD		611	234	1.0	1.0

^†1, first application, July 21; 2, second application, August 15; and 3, third application, September 9, 2005.
^‡Fresh mass on September 28, 2005.
^§Visual rating index on September 23, 2005. See Table 3 for indexing scale.