Effect of irrigation water and soil sodicity on the performance and leaf nutrient composition of mango cultivars.
Samra J. S.
Author Affiliation: Central Soil Salinity Research Institute, Karnal 132?001, India.
: 306-311
Abstract : Three mango cultivars (Dashehari, Langra and Chausa) were planted at 6 sites in Haryana State. Analyses were carried out on soils, irrigation water from wells, and on young and old leaves. Sodium toxicity exhibited itself as scorching of older leaves which had Na levels up to 2100 p.p.m. Younger leaves had lower Na and higher K contents and showed no scorching. Dashehari, which had the lowest leaf K:Na ratio was most sensitive to Na scorching. Leaves were also analysed for Ca, Mg, P, Mn, Zn, Cu and Fe, levels of which were generally higher in old than in new leaves. Analysis of standardized leaf samples is a good tool for diagnosing Na toxicity, which can be due to sodicity of either soil or irrigation water.