2. Herbicide spraying – Three herbicides are commonly used to kill weeds in no-till corn farming: glyphosate, paraquat, and 2,4-D.
In general, the farmers in this part of Sarangani use glyphosate throughout the growing season.
However, under certain conditions, paraquat and 2,4-D are used as alternative or additive.
Glyphosate (N-(phosphonomethyl)glycine, ex. Roundup) is a nonselective, systemic (or translocated) post-emergence herbicide.
Being nonselective, it is a broad-spectrum herbicide capable of killing grasses, sedges, and broadleaved weeds except those genetically modified to resist or with natural tolerance to its toxicity.
It is ineffective on roundup-ready or glyphosate-resistant varieties of corn.