PLNT 1213 Lecture Notes - Lecture 20: Agroecosystem, Agroecology, Intraspecific Competition
Document Summary
Objectives: describe agroecosystems, describe interactions in agroecosystems. Identify various types of cropping systems: explain why cropping systems are manipulated, explain yield limiting factors, describe various types of cropping systems. Natural ecosystem: ___________________________________________________________ biological community interacting with environment. Natural ecosystem characteristics: ___________ diversity, equilibrium, ___________ nutrient cycling. Agroecosystem: a community of __________________ and/or animals interacting with an environment selected plants that is managed by humans. Agroecosystem: _____________________ limited diversity, _____________________ constant disruption, nutrient losses replenished with external inputs. ________________________________________________________________________ maximum production capacity of a crop: result of interaction of genetics and the environment. Leibig"s law of the minimum: ________________________________________________________________________ most limiting factor determines yield potential of a give plant at a given environment. Plant competition: also called ________________ interference, occurs when two or more plants growing in the same area need to acquire the same resources at the same time, plants often compete for, ______________________ light, water, nutrients.
