Pre-emergence herbicides like Simazine or Atrazine or Diuron 3 to 4 kg/ha application 4 - 6 weeks before planting and ploughing the field 2 weeks before the leaves of the crop began to curled down to prevent weed establishment.

Weed growth emerging later is treated with post emergence herbicides such as or Glyphosate 0.5 kg/ha or Dalopon 3 to 4 kg/ ha or 2,4 - D 0.5 to 1 kg/ha depending upon the predominant weed species.

Dalapan spray drift can cause Chlorosis on outer leaves and necrosis on leaf tips when pineapple plants are young. It should be applied carefully any time from 6 months.