Agriculture is one of the dominant parts of Senegal's economy. Even though Senegal lies within the drought-prone Sahel region, only about 5 percent of the land irrigated, thus Senegal continues to rely on rain-fed agriculture. Agriculture occupies about 75 percent of the workforce. Despite a relatively wide variety of agricultural production, the majority of farmers produce for subsistence needs. Millet, rice, corn, and sorghum are the primary food crops grown in Senegal. Production is subject to drought and threats of pests such as locusts, birds, fruit flies, and white flies. Moreover, the effects of climate change in Senegal are expected to severely harm the agricultural economy due to extreme weather such as drought, as well as increased temperatures.