Nutrient survey of Arizona cotton with reference to soil type and water quality

Abstract

Established cotton fields in 6 counties were sampled during the 1981 growing season. Two composite soil samples were taken from each field and both leaf blade and petiole tissue samples were taken two times during the growing season. Irrigation water samples were also taken. The tissue samples were analyzed for 13 elements, and the soil samples analyzed for 9 element, in addition, PH, EC, CEC and percent saturation values were determined on the soil samples. The level of each plant and soil element was investigated and compared with published critical and/or sufficiency levels. Simple correlation analysis were done between plant data and between plant and soil data. Phosphorus NO₃ and B were low and some samples were low in Zn. Calcium, Mg, K, and Fe levels were adequate and no unusual levels of AL and Ba were found. Some samples contained high levels of Na.