However, it has been nearly half a century since arsenic and lead arsenate were used as pesticides and mercury is no longer used in fungicides.
Ornamentals, like roses, are frequently protected by systemic chemical pesticides mixed into chemical fertilizer and fed through the soil.
The rationale behind this rigid self-righteousness is that cotton, being a nonfood crop, is sprayed with heavy applications of pesticides and/or herbicides that are so hazardous that they not permitted on food crops.
Almost all our tests so far have shown less than the background level for heavy metals, and no traces of pesticides [including] chlorinated and organophosphated pesticides.
Certain pesticides approved for general use can severely damage earthworms.
In high-value seed orchards and seed production areas some protection from seedworm attack may be obtained through the use of pesticides applied in a carefully timed program.
Chemical control is generally not considered practical in forest plantations, but several pesticides have proved effective in reducing insect damage in seed orchards.
Chemical contamination occurs along the North Branch, in areas where pesticides and other economic poisons get into the stream system, and in spots and stretches where specific industrial wastes create local problems.
From the same farming regions and even more from lawns and gardens and parks in more populated areas, pesticides and other economic poisons accompany sediment into the stream system or are blown into it as sprays and dusts.
Here she studies various plants that are useful as pesticides and so on.
Unfortunately most of the remedies he suggested were limited to spraying of insecticides and pesticides such as lindane, malathion dichlorose, copper sulphate or citronella oil.
In fact some of these naturally occurring substances are far more dangerous than the toxic residues of pesticides in our foods.
The real problem we are having about our health is not that there are residues of pesticides in our food.
The present restrictions on the use of DDT and PCB in Denmark have not yet resulted in a corresponding decrease in the amount of these pesticides in birds.
Toxic chemicals have been found in Greenland seabirds, as everywhere else in the world, but it must be emphasized that nopesticides whatsoever are in use in Greenland itself.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "pesticides" in a variety of sentences. We hope that you will now be able to make sentences using this word.
