Effects Of Manure Types and inorganic Fertilizers On Agronomic Characters And Biomass Production Of Azolla microphylla

Abstract

The objectives of this experiment were to: (1) determine the effect of manure types on population growth and biomass yield of Azolla microphylla, (2) determine the effect of dolomite and phosphate fertilizer on population growth and biomass yield of Azolla microphylla, and (3) determine the interaction between manure and fertilizer phosphate + dolomite on population growth and biomass yield of Azolla mycrophylla. The experiment was conducted in July to September in Dagan Village, Bobotsari District, Purbalingga Regency, at altitude . ±185 m above sea level. The study used a complete randomized block design (RCBD) consisting of 2 factors and 3 replications. The first factor were the type of manures Liquid Organic Fertilizer chicken manure (P1) and goat manure manure Liquid Organic Fertilizer (P2). The second factor were inorganic fertilizer that is without treatment (V0), dolomite fertilizer (V1), SP 36 fertilizer (V2) and dolomite fertilizer + SP 36 fertilizer (V3). The variables observed were Azolla growth rate, Azolla doubling time, chlorophyll content, fresh weight, and dry weight of the Azolla biomass. The results showed that the types of manures did not give different effect on the growth and yield of Azolla plants. The addition of dolomite + SP 36 fertilizer was able to increase the growth and yield of Azolla, affected the chlorophyll content (43,94% increased), Azolla fresh weight (20,49% increased), and dry weight of Azolla biomass (25,77% increased). There was no interaction between combination treatments of types of manure and inorganic fertilizers on all of growth and yield variables observed.