2008 Analysis of the Geometry of Drilled Holes in Demolition ...

added to every five hundred mL extract and the mixture was boiled again for
thirty minutes. The mixture was strained again before one hundred fifty mL was
dispensed into each lapad bottle. PDA and CWA were also prepared as these
served as the study’s control set-ups. Three replicates per treatment were
prepared. All bottles were autoclaved for one hour then slanted.
From this study, it can be concluded that Papaya Peelings Extract Culture
Media was the most effective culture media among the treatments for A. niger.
However, no conclusion can be drawn from the results seen from the T.
harzianum treatments since there seems to be a problem with the group’s stock
culture.
It is then recommended that studies on alternative sources of culture
medium for fungi from other fruits would be pursued. Research on the viability of
banana and papaya peels as culture media for T. harzianum is also recommended
to establish a basis of results for future researchers.
#16
Comparative Analysis of Primary and Adventitious Roots
Using Fractals to Determine Effectiveness in Preventing Soil
Erosion
Patricia T. Baricaua, Jessica Ann A. Caras, Philip Erwin T. Reyes
ABSTRACT
It is not known whether primary or adventitious root growth is more
effective in holding the soil together. This study was conducted to analyze and
compare the root growth of the primary and the adventitious roots of calamansi
using fractals. Fractals can explain root growth better than simple geometry such
as lines and curves, since fractals are used to measure biological growth with
indefinite shapes. Six seeds for primary roots and six stem cuttings for
adventitious roots were planted and were left to grow for 33 days. Images of the
roots were then taken with a digital camera and were analyzed using Fractal
Analysis System software by Hiroyuki Sasaki, and using the program, the fractal
dimensions of the roots were obtained. The resulting fractal dimensions for
primary roots range from 1.3735 to 1.4865, and has a mean of 1.445. The
resulting fractal dimensions for adventitious roots range from 1.5326 to 1.6099,
and has a mean of 1.56352. Based on theory, roots with higher fractal
dimensions, in this case the adventitious root growth, have a higher perceived
rate of growth, and a larger occupied space. This means that the root system will
be able to hold more soil particles, and will be able to absorb more minerals from
it. Root growth is not definite, adventitious roots may have higher fractal
dimensions but it is also possible that later on the primary roots will have higher
fractal dimensions. The findings of this study may help in preventing soil erosion
and may lead to the better propagation of calamansi plants. This study could also