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||Growth and biochemical response of Azolla caroliniana Willd to soluble NPK fertilizers
||Nouri T., Bouyahia H., Amari Z., Arbaoui D., Mekhloufi M. B., Badji A.
||1Laboratory of Biodiversity and Conservation of Waters and Soils, Abedhamid Ibn Badis Mostaganem university 27000, Algeria
2 Institute of sciences and technology, Natural and life sciences Department University Center Salhi Ahmed Naâma 45000, Algeria.
3 Institute of sciences and technology, Natural and life sciences Department, Nour Bachir El-Bayadh University Center, Algeria.
||Azolla is an aquatic fern, which grows quickly on the surface of the water. Which holds the promise of providing sustainable food for livestock, fish, and poultry because it contains tremendous amounts of protein, amino acids, vitamins. Besides, it can also be used in farming as biofertilizer. The objective of this work is to study the effect of different fertilizer units of NPK plus trace elements (0-0-0; 15-15-15 and 20-20-20) on biomass, Relative growth rates (RGR), doubling time and the chlorophyll content of Azolla caroliniana under controlled conditions. The test was carried out in an automated greenhouse. The Azolla was cultivated in 0.016 m3 tanks in different culture solutions, the control constitutes only water, the second batch contains a solution enriched with NPK 15-15-15 plus TE and the last batch constitutes a mixture of water plus NPK 20-20-20 plus TE. All these batches are in four repetitions dispositive. The results obtained show that the biomass, growth index, as well as the chlorophyll content of Azolla caroliniana, were important in the culture solution enriched with NPK 15-15-15 compared to that found in the medium pure water and NPK 20-20-20. On the other hand, the Azolla doubling time increased in the control groups.
||Azolla caroliniana, biomass, chlorophyll, doubling time, NPK fertilizer
||Nouri Tayeb, Natural and life sciences Department University Center Salhi Ahmed Naâma 45000, Algeria.Tél
00213664872712 ; e-mail : email@example.com