Converse of object

• tolerate: Knowing that their crops will more or less tolerate an herbicide, farmers are not likely to reduce their applications.

• spray: Weeding is done by hand rather than by spraying herbicides.

• modify: On an average scenarios with genetically modified herbicide tolerant sugar beet led in an increased gross margin.

Adjective modifier

• non-selective: This is a method where non-selective herbicides can be applied in a selective way.

• phenoxy: Soft tissue sarcoma and non-Hodgkin's lymphoma in workers exposed to phenoxy herbicides, chlorophenols, and dioxins: Two nested case-control studies.

• glyphosate-based: When the shoots are 15cm high they are sprayed with a glyphosate-based herbicide.

• selective: Treat in grass at the early rosette stage with a selective herbicide.

• residual: From year 3 a residual herbicide should be applied annually in February.

• systemic: One method of dealing with this problem is to spray the bank with a systemic herbicide.

Modifies a noun

• glufosinate: This GM maize had been modified to confer tolerance to the herbicide glufosinate.

• tolerance: However, transfer of herbicide tolerance is not necessarily a hazard.

• roundup: The Monsanto canola contains a gene that protects the crop from the herbicide Roundup.

• ammonium: To enable efficacy and demonstration work to be conducted with the herbicide glufosinate- ammonium.

• resistant: Reports have already commented that the ' herbicide resistant ' genes from GM plants are already crossing over into weeds.

• resistance: The herbicide resistance gene was also detected at low levels in these bacteria.

Noun used with modifier

• broad-spectrum: There are risks associated with the use of broad-spectrum herbicides.

• in-crop: Significantly, 97 % reported increased in-crop herbicide use in 2003/04.

• pre-emergence: As a result winter barley has more need than winter wheat for a pre-emergence herbicide.

• triazine: Ban on triazine herbicides likely to reduce but not negate relative benefits of GMHT maize cropping.

• post-emergence: Main use: One of the most widely used broad spectrum ( non-selective ), systemic, post-emergence herbicide.