Development and application of a model for calculating the risk of stem and root lodging in maize

Lodging is a major constraint to increasing the global productivity of maize (Zea Maize L.). The objectives this paper are to: i) describe model for stem and root lodging in maize, ii) calibrate anchorage strength component model, iii) evaluate model’s applicability by assessing its capacity explain effects crop husbandry on risk iv) investigate potential further develop predict at an early enough growth stage tactical agronomic action minimise risk. study involved multidisciplinary collaboration between scientists, wind engineers geospatial scientists UK China. Three field experiments with plant population density nitrogen (N) fertiliser rate treatments were conducted China test model. Plant characteristics associated measured after flowering. An existing cereal that uses spread plate as primary input was demonstrated be applicable calibrated species. predictions N consistent published observations. calculated significantly reduced failure speeds all experiments, thus lodging. This effect primarily due increased reducing strength. Changes had smaller characters. A sensitivity analysis showed speed influenced most variation plate. has shown leaf area index 4, 6 or 8 stages good indicator crop’s future lodging, which demonstrates into practical tool predicting time decisions made during growing period.