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Conventional approaches of using empirical equations for quantifying yield losses due to rice pests are limited in their scope and application since these equations are data-specific and insensitive to variable cropping and pest conditions. Recent developments in crop growth modelling provide a...
The demand from meat processors that pastoral farmers supply animals at an agreed time, and to agreed specifications (e.g. carcass weight), requires formal consideration of uncertainty and variability in feed planning. This paper develops this theme by deriving the probability distributions...
A general model of rotational grazing is constructed where in each of P consecutive time periods a mob of animals grazes one of m paddocks. The optimal grazing sequence is that which maximises their total herbage intake and satisfies the physical constraints of the grazing system. The total...
An agronomic crop growth model generates yield and pollution data which are incorporated into a linear programming model for the estimation of the effects of Common Agricultural Policy (CAP) price changes on modal farm types in two regions, namely South East England and South West France. The...
A method is demonstrated to measure the yield risk associated with new technologies. The method, based on the concept of stochastic production and the method of moments, is applied to measure the mean and variance of the yield for some new technologies introduced in Cameroon in 1986–1989 under...
An integrated decision support system for pasture improvement was developed to assist consultants to help beef producers in the coastal subtropics decide on a pasture improvement strategy. The components of the system, including knowledge sources from two different domains (agronomy and...
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