GEOG M107 Lecture Notes - Lecture 17: African Trypanosomiasis, Dengue Fever, Tsetse Fly
Document Summary
Irrigation: method in which a controlled amount of water is supplied to plants at regular intervals for agriculture. (land) reclamation: process of creating new land from ocean, riverbeds, or lake beds, returning disturbed lands to an improved state. Areas where potential water losses by evaporation and transpiration (pet: potential evapotranspiration) are greater than the amount of water supplied by precipitation. Changes low-priced grazing land into expensive cropland farming systems adjusted to work with irrigation system. Irrigation in humid areas may not change crop, but increase yield. Available water holding capacity dictates irrigation needs. Ice layers on crops = releases heat to protect crops from freezing (this is why farmers spray their plants before plants get to freezing point, so that outside of plant is frozen before inside gets frozen) Irrigation hazards (in areas that did not originally contain water) Maintenance of water distribution equipment from pests increased labor to apply water fertilizers. Mosquito-borne illnesses (malaria, dengue fever, zika virus, etc. )
