Farmers in the upland can raise their harvest through bacteria
that Philippine Rice Research Institute found to increase plant growth rate and
yield.
Researchers, led by scientist Jayvee A. Cruz of PhilRice, discovered that
actinomycete (Streptomyces mutabilis), a plant growth-promoting bacteria
(PGPB), showed promising results.
Based on Mr. Cruz’s study, actinomycete, an aerobic bacterium suitable
under upland conditions, can increase root dry weight, number of tillers, and
root depth of upland rice. It can also
promote growth even under moisture stress.
“The country’s production of upland rice remains low, at approximately 2
t/ha only. By applying half fertilizer treatment combined with PGPB treatment,
farmers can get additional yield of 0.5 t/ha,” Mr. Cruz said.
Mr. Cruz also said that it needs a lesser amount of chemical fertilizer for
soil treatment, which can address environmental concerns and rising cost of
fertilizers.
The 32-year-old scientist, however, emphasized that the treatment is not a
100% substitute for synthetic fertilizers.
At present, there is no commercially available actinomycete inoculant in
the Philippines. PhilRice expect though they will soon produce that another
type of microbial inoculant for upland rice varieties resulting from this
study.
Mr. Cruz said that they need further field assessment to provide more
information on the performance of actinomycete inoculant under limited moisture
conditions in upland rice production. (Allan Biwang Jr.)
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