| dc.description.abstract | Coffee (Coffea sp.) is a plantation crop that is widely cultivated
and an export commodity that has an important role for the
economy in Indo-nesia. The productivity of coffee cultivation in
Indonesia is still not optimal due to several factors, one of which
is the lack of innovative tech-nology that can increase the
production of coffee plants. An important phase in the cultivation
of coffee plants is in the phase of young plants or immature plants
in year 1. In this phase, proper maintenance treatment is needed
for the purpose of preparing the plant for optimal growth. The
application of technology to increase the production of coffee
plants can be done through the application of Bacillus sp. which
can func-tion as bacteria that can stimulate plant growth and by
using superior clones. The purpose of this study was to determine
the effect of Bacillus sp. on the growth of immature plants in year
1 on several robusta coffee clones. The method of this research
was using split plot design which was arranged in a randomized
complete block design (RCBD) with 2 factors and 3 replications.
Factor I as the main plot consisted of several clones with 4 levels,
namely the Cabutan clone, BP 409, BP 936, and BP 939. Factor
II as the subplot was the concentration of Bacillus sp. consisted of
3 levels, namely 0 gr/l, 30 gr/l and 60 gr/l. The results of this study
indicate that there is no interaction between the application of
Microbial Bacillus sp. with some of robusta coffee. While the
application of Bacillus sp. significantly increase stem diameter
and there were differences in the growth characteristics of several
coffee clones on all observed variables. | en_US |
