Abstract

We have a good idea of what pests and diseases affect rice, but we do not always have a clear picture of where individual or groups of pests and diseases occur and how much effect they have on rice yield. One approach that can be used to gain insight into this is to develop a yield loss model based on a wide range of pest and disease injuries and corresponding yield losses under different rice production situations across Asia. A production situation is a combination of physical and socio-economic factors that influence agricultural production. Models like this are instructive tools that simplify real-world processes, but still provide useful information about the outcome of these processes.

Keywords: Yield and production; Cropped rice; Agricultural-statistics; Fertilization; Rain-fed millets; Water harvesting