The optimal long-run fertilisation and irrigation of a perennial crop is approached via two stochastic dynamic optimisation models. The first model assumes that the ex-post level of the state variable--leaf nitrogen (LN)--is known with certainty. The second model assumes that the level of leaf...

The efficiency of agricultural inputs may be reduced by ignoring the inherent variability in soil texture and the non-uniformity of the input's application. This paper focuses on variable-rate irrigation, which is performed via subdivision of the spatially variable field area into a controlled...