This publication provides practical guidelines on establishing composite service laboratories for the analysis of soil, plants, water and fertilizers (mineral, organic and biofertilizers). It also provides various analytical methods for assessing soil fertility and making nutrient recommendations, assessing quality of irrigation water, and details of the equipment, chemicals and glassware required for a given analytical capacity. Useful to administrators and planners in establishing laboratories, and to technicians through providing detailed and precise procedures for estimation.