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Rudi Cahyo Wicaksono
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Agriculture, Biological Sciences & Forestry

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UTILIZATION OF KAOLIN FOR THRIPS PEST CONTROL IN CITRUS PLANTS Rudi Cahyo Wicaksono; otto endarto
JURNAL AGRONIDA Vol. 5 No. 1 (2019)
Publisher : Universitas Djuanda Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (853.19 KB) | DOI: 10.30997/jag.v5i1.1850

Abstract

Citrus is one of the most consumed fruits. The projected demand for citrus fruit in 2015 - 2019 increased by 0.52% / kg / capita / year. However, citrus fruit production fluctuates every year. The average production of citrus fruits in 2011 - 2015 decreased by 1.49% per year. Decreased quality and quantity are due to pest attacks. Thrips attack the very young flower and fruit phase by injuring the surface of the fruit skin. The study was conducted from June to December 2017, in Glagahagung Village, Purwoharjo District, Banyuwangi Regency. The study used a randomized block design with four treatments using kaolin, surround, organim, and non-controlling, each repeated five times. The results of the study provided information that the use of kaolin continuously can suppress thrips pests up to 89.87%, while surround and organim supress up to 85.06% and 77.71% respectively, and can improve the quality of citrus fruits. Keywords: Kaolin, Surround, Thrips
Potential of Antagonistic Fungi in Inhibiting the Growth of Botryodiplodia theobromae Fungi Causes Stem Rot Disease in Citrus Dina Agustina; unun triasih; mutia erti dwiastuti; rudi cahyo wicaksono
JURNAL AGRONIDA Vol. 5 No. 1 (2019)
Publisher : Universitas Djuanda Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1193.359 KB) | DOI: 10.30997/jag.v5i1.1852

Abstract

Soil microorganisms such as Trichoderma asperellum and Gliocladium sp have the potential to become biological control agents in inhibiting the growth of fungi Botryodiplodia theobrome which causes stem rot disease in citrus plants. The purpose of this study was to determine the potential of T.asperellum and Gliocladium sp fungi in inhibiting the growth of B. theobrome fungus causing stem end rot disease in citrus plants. The antagonistic test was carried out using the dual culture method using PDA media; observations were made on the growth of pathogenic fungi and antagonistic fungi to measure their inhibitory power. The results of the observation and calculation of the fungal growth rate were analyzed using the T test with a level of 5%. The pathogen fungal growth rate in the antagonistic test was slower than control and inhibition of B. theobrome by T.asperellum and Gliocladium sp were respectively at 78.67% and 84.56%. The mechanism of the two antagonistic fungi has the nature of competition and parasitism because of the broader inhibition spectrum than the pathogenic fungi. Keywords: Botryodiplodia theobromae, Trichoderma asperellum, Gliocladium sp, antagonistic test.
Co-Authors Dina Agustina Mutia Erti Dwiastuti Otto Endarto Unun Triasih