Micronutrient Status of Soils in Western Chitwan District, Nepal
A soil micronutrient status survey was conducted in the western part of Chitwan district where soils from eight cultivated farmer fields were chosen for the purpose. The study to determine the micronutrient status of the farmers’ fields under currently used fertility management practices was conducted in the year 2008. Composite soil samples were collected from each of farmers’ fields to the plow-depth level where most of the soils of the research sites were found to be moderately acidic with pH in the range 5.4-6.7, while mean pH was 6.04. The soil of Meghauli VDC was strongly acidic, while that of Dibyanagar was found to be nearly neutral although both of these VDCs are neighboring each other and farmers also practiced the same cropping pattern. The micronutrients, namely, zinc, copper, manganese, and iron were analyzed by Atomic Absorption Spectroscopy. More than half the samples were noted to be high in Cu and Fe, while all of the soils were low in Zn for most of the crops. The amount of micronutrients such as Zn in the soil was observed to be seriously deficient while Cu, Mn and Fe were of adequate level.