Trickle irrigation is the frequent, low pressure application of water placed near, or directly into, the plants' root zone. Water is generally applied at a low flow rate but in an amount sufficient to replenish the crop water requirement on a daily basis. Available from the Irrigation Industry Association of B.C. is a manual which assists the producer in designing a trickle irrigation system to match soil conditions, crop characteristics, field shape and topographies; selecting the right types of components based on a knowledge of emitter performance; and installing the system accurately as per a plan.