Sari, Zulfa Novita (2024) EFEKTIVITAS ENKAPSULASI Paenibacillus polymyxa SEBAGAI PENGENDALI PENYAKIT HAWAR DAUN BAKTERI PADA TANAMAN PADI LOKAL. Undergraduate thesis, Universitas Pembangunan Nasional Veteran Jawa Timur.
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Abstract
Paenibacillus polymyxa is one of the antagonistic bacteria that can be utilized as a biological agent, the use of biological agents has begun to be of interest to farmers, but its application in liquid formulations has not been able to maintain optimal stability and viability of microorganisms. One promising approach to overcome this problem is bioencapsulation, which is a method of packaging biological agents with the aim of protecting bacteria in the soil and increasing their efficiency. This study aimed to assess the encapsulation efficiency, measure the viability of microorganisms inside the beads, and determine the difference in swelling of beads made with various concentrations of calcium chloride (CaCl2) as a binding agent. Beads were made by extrusion method by combining Paenibacillus polymyxa suspension, sodium alginate suspension, and CaCl2 addition at concentrations of 1%, 3%, and 5%. The results showed that different concentrations of CaCl2 can affect the viability of Paenibacillus polymyxa in beads. Beads made with CaCl2 at 3% concentration performed best in the encapsulation efficiency test compared to beads made with 1% and 5% CaCl2 binders, while beads with 3% and 5% CaCl2 concentrations were able to maintain the viability of microorganisms at a higher level and for a longer time than beads using 1% CaCl2 concentration. The decrease in viability and swelling power of the beads is thought to be caused by the carrier material used and storage conditions. The combination treatment of 5% calcium chloride concentration and application time 7 days before planting was the best treatment in inhibiting bacterial leaf blight disease in local rice with the lowest intensity and had an inhibitory effectiveness of 50.1% in the in vivo test.
| Item Type: | Thesis (Undergraduate) | ||||||||||||
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| Subjects: | S Agriculture > SB Plant culture > SB950-989 Pest Control and Treatment of Diseases, Plant Protection | ||||||||||||
| Divisions: | Faculty of Agriculture > Departement of Agritechnology | ||||||||||||
| Depositing User: | Zulfa Novita Sari | ||||||||||||
| Date Deposited: | 20 Sep 2024 10:20 | ||||||||||||
| Last Modified: | 20 Sep 2024 10:20 | ||||||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/30017 |
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