Estimates, standard errors (SE), back-transformed estimates and per cent change in weevil damage as a function of pesticide application combined with irrigation or K or Si fertilizer in the potassium response trial analysed using a GLMM with a negative binomial distribution, log link function and Laplace approximation (n = 449).

Pesticide and 100 kg N ha y-1 were blankets applied to all treatments shown here.