Selenium in the soil of the Vojvodina Province [Serbia, Yugoslavia] and its availability
2000
Cuvardic, M.
The objectives of this study were to determine Se (selenium) levels and availability in the soils of the Vojvodina Province (Serbia, Yugoslavia) and factors that affect its solubility and availability to plants, in order to remedy its eventual shortages in soils and plants used for food and feed. The contents of total and water-soluble Se were generally low. Se had to be added in order to achieve its appropriate concentration in grain and vegetative mass. Se solubility, therefore its availability, varied in the different soil types under the effect of several factors (soil reaction, humus content, soil texture, etc.). Consequently, the effectiveness of added Se varied from one soil type to another. It was concluded that foliar application should be preferred to Se incorporation in soil. Amounts of Se to be added depend on application method and the form of Se in which it is being added. In the case of soil incorporation, Se doses should not exceed 0.5 microgram/g of soil; in the case of foliar application, the doses should range between 10 and 20 g/ha (10 g/ha for Na2SeO4 and 20 g/ha for Na2SeO3).
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