Damage caused by weeds

Baran RL. 1974. Nail damage caused by weed killers and insecticides. Arch Dermatol 110 467. 

According to Lachman (9), little or no damage to carrots is likely to result from Stoddard solvent sprays when the temperature is below 80 F. At higher temperatures, however, the oil may cause some injury. Crafts (3) states that the toxicity of the oil both to the weeds and to the crop is increased by heat and that spraying while temperatures are above 90 F. may be dangerous. 

In a weed control program, combinations of low or sublethal rates of chemicals followed by biocontrol agents could result in a more comprehensive weed control since an affected plant could be prediposed to infection by a mycoherbicide. Furthermore, damage on leaves from sublethal herbicides may cause roots to be inefficient, thus making the... 

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