dc.description.abstract |
Natural organic fertilizers used in plant cultivation are characterized by low efficiency and
soil-applied in large quantities to obtain high yield. The bioorganic fertilizer obtained through
anaerobic fermentation comprises number of growth substances, vitamins, antibiotics, amino
acids and useful micro-organisms. Bioorganic liquid fertilizer not only increases bioorganic
fertility of crops (in comparison to the control and prototype fertilizer), but also accelerates
their maturation and nutrient quality. Thus, the present study was aimed to produce
bioorganic liquid fertilizer from chicken manure and groundnut husks through aerobic
fermentation in open containers. The fermentation process was carried out under aerobic
conditions in two replications based on the method suggested by PCT (2013) as follow:
clamps of chicken manure and groundnut were formed in the open container covered with
cotton cloth (the proportion of the manure: husk = 1:1). The starting clamp components were
successively arranged in layers with a height of 0.4 m each. The formed clamps were sprayed
with diluted activated microbiological formulations including yeast and lactic bacteria. The
microbial formulations were prepared from yeast powder and coagulated milk (as a source of
lactic acid bacteria) with non-chlorinated water in the proportion of 1:50. Mixing and
spraying water on the clamp was done periodically. The fermentation process was done in
open container at ambient temperature for aerobic microbiological fermentation, until cycle
of a fertilizer production completed (being without any flavor).The result indicated that
Phosphorus, Potassium (K) and Calcium (Ca) were found to be significant between
bioorganic liquid fertilizer and compost tea (used as a control) solutions. However, there were
no significance differences with respect to Carbon (C), Nitrogen (N), Magnesium (Mg), and
Sodium (Na) contents of the solutions. It was also indicated that percentage macronutrient
compositions of bioorganic fertilizer solution was found to be greater than those of compost
tea solution in all studied macronutrients. It was also indicated that both compost tea and
bioorganic liquid fertilizer solutions fulfills the basic requirements of plant macronutrients
with respect to electrical conductivity and C:N ratio as a quality standard for organic
fertilizers. Comparison of mineral composition of bioorganic liquid fertilizer and compost tea
solutions with the standard for major macronutrients requirement of plants indicated that the
composition of both fertilizer solutions in the present study satisfies the standard with
bioorganic liquid fertilizer being higher in mean values for most of the studied mineral plant
nutrients. The performance of lettuce irrigated with bioorganic fertilizer solution indicated
that above ground biomass per plant was found to be significant with the highest mean weight
being 101.6g for pot irrigated with bioorganic liquid fertilizer. It can be concluded from the
present study that bioorganic liquid fertilizer can be produced locally available substrates.
Small holder farmers can get economic relief, because by using this technology, they can
minimize the use of chemical fertilizer which is being expensive and not environmentally
friendly. |
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