Although agriculture is the second-largest sector in the economy, Libya depends on imports in most foods. Climatic conditions and poor soils limit farm output, and domestic food production meets about 25% of demand. Domestic conditions limit output, while income and population growth have increased food consumption. Because of low rainfall, agricultural projects like the Kufra Oasis rely on underground water sources. Libya's primary agricultural water source remains the Great Man-made River (GMMR), but significant resources are being invested in desalinization research to meet growing demand. Libyan agricultural projects and policies are overseen by a General Inspector; there is no Ministry of Agriculture, per se.