oa Agrochemophysica - Effects of rainfall and differential application of N, ?, K, and Ca on the downward movement of K in an Avalon medium sandy loam cropped with maize (Zea mays L.)

Volume 4, Issue 4
  • ISSN : 0302-7112



Soil and plant samples were obtained from a field experiment in which different levels of ?, ?, K, and Ca were combined in a 34 factorial arrangement. The pattern of ? movement in topsoil (0 - 15 cm) was measured over a period of three years and related to rainfall and crop removal. The extent of ? drainage to subsoil horizons over two seasons was determined and the effects of ?, ?, K, and Ca levels on ? movement to lower horizons assessed.

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