Synthetic organic pesticides were introduced:

Synthetic organic pesticides were introduced before World War II, marking a significant advancement in agricultural practices. The development of synthetic organic chemicals led to the creation of pesticides that were more effective and could be produced in larger quantities than their natural counterparts. This shift started in the 1930s with compounds like DDT, which revolutionized pest control approaches and enabled farmers to address agricultural challenges with greater efficiency.

The period before World War II was critical in this context as various scientific breakthroughs in organic chemistry laid the groundwork for these synthetic pesticides. These developments contributed to increased crop yields and helped manage pest populations that natural methods could not efficiently control.

While there were earlier forms of pesticides made from natural sources or inorganic compounds, the synthetic organic version represents a distinct and major evolution in pest management practices, which continued to develop significantly after World War II.