SELENIUM ENRICHMENT OF BERSEEM PLANTS THROUGH FOLIAR AND SOIL APPLICATIONS.

Document Type : Research articles.

Authors

Soils, Water & Environment Research Institute, ARC, Giza, Egypt.

Abstract

A field experiment was conducted during winter seasson of
2005/2006. Egyptian berseem (Trifolium alexandernium) was
used as a forage crop. The selenium treatments of foliar spray
were added at rates of 0, 4, 8, 12 and 16 g Se fed-1, as sodium
selenate (Na2SeO4 ). Each level of selenium was divided into two
doses i.e. 0, 2, 4, 6 and 8g Se fed-1 . The cut 1 and cut 2 were
sprayed while cut 3 was left without spray. The selenium
treatments of soil application were added at rates of 0, 12, 18, 24
and 30g Se fed-1. The berseem plants were harvested in three cuts.
There were no significant differences between dry matter
yield of berseem plants and selenium levels of both foliar spray
and soil application. The dry matter production was slightly
increased with increasing Se levels of foliar spray but it decreased
with increasing Se levels of soil application. Se- concentration in
berseem plants was increased with increasing selenium levels of
foliar and soil application. The relative increase in Seconcentration in case of foliar spray was 1015% as the Se levels
increased from 0 to 8g fed-1, while in case of soil application, they
were 821% when Se levels increased from 0 to 30 g Se fed-1. Seuptake by berseem plants increased with increasing selenium
levels of foliar and soil application. The relative increases in Seuptake for foliar spray and application were 1042% and 720%,
respectively.

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