Authors :
A N. Siriwardana; C. K. Beneragama; P.M.D.R.N.Pallawala
Volume/Issue :
Volume 5 - 2020, Issue 12 - December
Google Scholar :
http://bitly.ws/9nMw
Scribd :
https://bit.ly/2KaE6e2
Abstract :
- Solid waste is a big issue to many countries.
Energy problem, is also a critical issue with the declining
of the useable fossil-fuels and world is now moving
toword the reniverble ennergy. Feeding the ever
increasing world population through sustainable crop
cultivation is a challenge and biogas units give great
solutions for them. Biogas slurry is a by-product of
biogas production, containing abundant nutrients, so
this may be good for use as a fertilizer or same times as
organic fertilizer. Biogas effluent (slurry) is lower in
pollution potential, has less odor, contains fewer viable
weed seeds, has fewer pathogens than the input and is an
excellent bio-fertilizer. But still not much information
are available on biogas slurry use as fertilizer in Sri
Lankan condition, so research was forcused to find out
the way to use biogas slurry as a fertilizer, in effective
and efficant manner. Different type of biogas slurry (AKitchen waste slurry, B- Cow dung slurry, C- Herbal
waste slurry, D-Hotel waste slurry and E- Recommended
fertilizer mixture) was applied to Bush Bean (“Phaseolus
vulgaris”) plants and observe crop growth and yield
differentiations. Slurry application methods were
changed (B-bulk application, S-Split application, LLiquid fertilizer spray weekly) to discover the
differentiations in performance. Randomize Complete
Blog Designing (RCBD) was employed to carry out field
experiment. Shoot-length, Root-length, Leaf area, Shoot
dry weigh, Root dry weigh, Leaf dry weigh were
measured. Two Factor Factorial model and Analysis of
variance (ANOVA) are used for the analysis. Crop
growth are significantly different to each other
according to the, Shoot length (P=0.001), Root length
(P=0.002) and Shoot dry weigh (P=0.00) considering the
95% confident interval. Even though shoot length, root
length, and shoot dry weigh change with time those
parameter are not significantly varied with the subTreatment (P=0.84, 0.664 and 0.68). Root dry weigh
(P=0.01), Leaf dry weigh (P=0.00), Shoot to root ratio
(P=0.00) and Leaf area (P=0.00) also significantly change
with the slurry type but only the shoot to root ratio is
significantly affected (p=0.03) by the slurry application
method. Type of biogas slurry significantly affects to the
crop growth. Cow dong slurry can replace the
recommended fertilizer mixture effectively and Hotel
waste slurry also capable of replacing the inorganic
fertilizer to some extent. But Herbal waste slurry is week
in this parameter. Slurry application method does not
significantly affect to the all most all parameters
excluding shoot to root ratio. Even though there are not
much prominent different with application methods still
Bulk application and Split application methods are
superior to liquid (spring) application. Most suitable
method is Bulk application method.
Keywords :
Biogas-slurry, Organic-Fertilizer, Solid waste management. Crop growth, Phaseolus vulgaris.
- Solid waste is a big issue to many countries.
Energy problem, is also a critical issue with the declining
of the useable fossil-fuels and world is now moving
toword the reniverble ennergy. Feeding the ever
increasing world population through sustainable crop
cultivation is a challenge and biogas units give great
solutions for them. Biogas slurry is a by-product of
biogas production, containing abundant nutrients, so
this may be good for use as a fertilizer or same times as
organic fertilizer. Biogas effluent (slurry) is lower in
pollution potential, has less odor, contains fewer viable
weed seeds, has fewer pathogens than the input and is an
excellent bio-fertilizer. But still not much information
are available on biogas slurry use as fertilizer in Sri
Lankan condition, so research was forcused to find out
the way to use biogas slurry as a fertilizer, in effective
and efficant manner. Different type of biogas slurry (AKitchen waste slurry, B- Cow dung slurry, C- Herbal
waste slurry, D-Hotel waste slurry and E- Recommended
fertilizer mixture) was applied to Bush Bean (“Phaseolus
vulgaris”) plants and observe crop growth and yield
differentiations. Slurry application methods were
changed (B-bulk application, S-Split application, LLiquid fertilizer spray weekly) to discover the
differentiations in performance. Randomize Complete
Blog Designing (RCBD) was employed to carry out field
experiment. Shoot-length, Root-length, Leaf area, Shoot
dry weigh, Root dry weigh, Leaf dry weigh were
measured. Two Factor Factorial model and Analysis of
variance (ANOVA) are used for the analysis. Crop
growth are significantly different to each other
according to the, Shoot length (P=0.001), Root length
(P=0.002) and Shoot dry weigh (P=0.00) considering the
95% confident interval. Even though shoot length, root
length, and shoot dry weigh change with time those
parameter are not significantly varied with the subTreatment (P=0.84, 0.664 and 0.68). Root dry weigh
(P=0.01), Leaf dry weigh (P=0.00), Shoot to root ratio
(P=0.00) and Leaf area (P=0.00) also significantly change
with the slurry type but only the shoot to root ratio is
significantly affected (p=0.03) by the slurry application
method. Type of biogas slurry significantly affects to the
crop growth. Cow dong slurry can replace the
recommended fertilizer mixture effectively and Hotel
waste slurry also capable of replacing the inorganic
fertilizer to some extent. But Herbal waste slurry is week
in this parameter. Slurry application method does not
significantly affect to the all most all parameters
excluding shoot to root ratio. Even though there are not
much prominent different with application methods still
Bulk application and Split application methods are
superior to liquid (spring) application. Most suitable
method is Bulk application method.
Keywords :
Biogas-slurry, Organic-Fertilizer, Solid waste management. Crop growth, Phaseolus vulgaris.
