| Summary: | Sugarcane is one of the important commodities in Indonesia. Silicate mineral
that is one of the very abundant availability. Silicate is one nutrient that have benefits
for plants as especially sugarcane. The research was conducted to reveal sugarcane
response to the silicate dosage to absorption of phosphor, plant growth, resistance
borer infestation, and yield of two varieties of sugar cane. This research was a field
study that had been carried out at the PT Perkebunan Nusantara XI�s fields at Banter,
Jatiroto District, Lumajang Regency, The Province of East Java Special Territory
within November 2011 to Oktober 2012.
The experimental design applied the split plot design. The first factors was the
varieties of treatment consisting of 2 levels i.e. R579 and PS864. The second factors
was the rate of silicate fertilizer consisting 5 levels, i.e. without silicate, 75 kg/hg of
silicate fertilizer, 150 kg/ha of silicate fertilizer, 225 kg/ha of silicate fertilizer, and
300 kg/ha of silicate fertilizer. The collected data then were analyzed by analysis of
variance (Anova) applying level of significance α = 5%. Whenever the significant
differences among treatments were found, further analysis was carried out by
applying a Duncan Multiple Range Test (DMRT) of α = 5%.
The results showed that the dosage 150 kg/ha until 300 kg/ha of silicate
fertilizer used has revealed increase silicate (Si) and phosphor (P) absorption in
PS864 variety of plant cane. Silicate fertilizer used has revealed influence to the
growth of root, stem, and shoot two varieties. The dosage 150 kg/ha of silicate
fertilizer used has revealed prevent to stem borer and shoot borer infestation two
varieties of plant cane. The dosage 300 kg/ha of silicate fertilizer used has revealed
inhibit inversion of sucrose as well as increase content of phosphor in the sugarcane
juice two varieties. The dosage 75 kg/ha of silicate fertilizer used has revealed
increase the weight of plant cane for each hectare as well as the weight of crystal
white sugar, but could not increase the content of sucrose in sugar cane.
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