Uji In-Vitro Kemampuan Ekstrak Metanol Bunga dan Daun Tanaman Kembang Telang (Clitoria ternatea L.) dalam Menghambat Pertumbuhan Jamur Fusarium oxysporum f.sp. cepae

Suganda, Tarkus; Simarmata, Indah Nita Chrysilla; Supriyadi, Yadi; Yulia, Endah

doi:10.24198/agrikultura.v30i3.24031

Cited by 8 publications

(8 citation statements)

References 5 publications

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“…The economics of using relatively safer synthetic products is often restricted by a farmer's perceived limited capacity and autonomy to reduce pesticide use as well as what is considered "normal" practice (Bakker et al, 2021;Deguine et al, 2021). Use of synthetics is exacerbated at the smallholder level as many smallholders are unaware of alternative agro-ecological approaches (Anjarwalla et al, 2016), nor are they often aware of the hazards of synthetic use to their health (Nicolopoulou-Stamati et al, 2016;Andersson and Isgren, 2021) and the environment (Suganda et al, 2020). Farmer use of pesticidal plants has been undermined through commercial advertising and systematic promotion of synthetics over several decades by businesses and governments (Isman, 2008;Lykogianni et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

Understanding farmer knowledge and site factors in relation to soil-borne pests and pathogens to support agroecological intensification of smallholder bean production systems

Ngoya

Mkindi

Vanek

et al. 2023

Front. Sustain. Food Syst.

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IntroductionPests and diseases limit common bean (Phaseolus vulgaris) production in intensifying smallholder farming systems of sub-Saharan Africa. Soil-borne pests and diseases (SPD) are particularly challenging for farmers to distinguish and manage in cropping systems that vary in terms of soils, farmer knowledge, and management factors. Few studies have examined soil drivers of SPD in smallholder systems, integrated with farmers' perceptions and management practices.MethodsIn Kilimanjaro, Tanzania, we assessed farmer knowledge and SPD management for common bean alongside soil type and soil quality. Focus group discussions and field survey findings including farmer observations and soil nutrient balances were integrated with soil analyses of farmers' fields. Multiple correspondence analysis (MCA) and principal component analysis (PCA) assessed relationships among farmer demographics, pests and diseases, soil characteristics, and management practices.Results and discussionSurveys revealed that 100% of farmers knew of the bean foliage beetle (Ootheca bennigseni) but few recognized the soilborne pest Ophiomyia spp. or bean fly despite it being more destructive. About a third of farmers knew of root rot diseases caused by Pythium spp. and Fusarium spp. Synthetic pesticides were used by 72% of farmers to control pests, while about half that (37%) used pesticidal plants, particularly Tephrosia vogelii extracts sprayed on foliage. Regarding SPD, 90% of farmers reported that their management practices were ineffective. Meanwhile, synthetic fertilizers were used by nearly all farmers in beans intercropped with maize (Zea mays), whilst very few farmers used manure or compost. Soil available phosphorus was lowbut showed a balance between inputs and outputs regardless of whether fields were owned. Field nitrogen balances were more negative when fields were owned by farmers. An MCA showed that older farmers employed a greater number of pest control practices. The PCA showed that field variability was dominated by soil organic matter, elevation, and soil pH. Higher organic matter levels were also associated with less stunting and wilting of beans observed by farmers. Our results suggest that research and farmer learning about SPD ecology are key gaps, alongside recycling of organic residues to soils. Cost-effective and sustainable practices to manage bean SPDs for smallholders are also needed.

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Section: Discussionmentioning

confidence: 99%

Understanding farmer knowledge and site factors in relation to soil-borne pests and pathogens to support agroecological intensification of smallholder bean production systems

Ngoya

Mkindi

Vanek

et al. 2023

Front. Sustain. Food Syst.

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“…Penentuan persentase penghambatan pertumbuhan Fusarium sp. oleh ekstrak dewandaru (E. uniflora L.)dapat dihitung menggunakan rumus berikut (Suganda et al, 2019):…”

Section: 𝐷 = 𝐷1 + 𝐷2unclassified

Aktivitas Biofungisida Ekstrak Daun Dewandaru (Eugenia uniflora L.) dalam Menghambat Pertumbuhan Fusarium sp. Secara In Vitro

Dewantari

Rahayu

2021

LenteraBio

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Fusarium sp. termasuk fungi tular tanah penyebab layu yang menyerang berbagai tanaman. Penggunaan fungisida sintetis memberikan dampak negatif bagi lingkungan dan kesehatan konsumen, sehingga diperlukan pengendalian menggunakan biofungisida. Tanaman dewandaru (Eugenia uniflora L.) mengandung senyawa bioaktif yang bersifat antifungi sehingga berpotensi sebagai biofungisida. Penelitian ini bertujuan untuk mengetahui aktivitas biofungisida ekstrak daun dewandaru terhadap penghambatan pertumbuhan Fusarium sp. dan memperoleh konsentrasi ekstrak daun dewandaru terhadap penghambatan pertumbuhan Fusarium sp. paling optimal. Penelitian ini menggunakan Rancangan Acak Lengkap dengan perlakuan konsentrasi ekstrak daun dewandaru 1%, 2%, 3%, 5%, kontrol negatif (0%) dan kontrol positif mankozeb dengan 4 pengulangan. Pengamatan terhadap diameter koloni dan persentase penghambatan dilakukan setelah masa inkubasi 7 hari miselia Fusarium sp.. Hasil penelitian dianalisis dengan ANAVA selanjutnya dilakukan duncan test pada taraf 5%. Analisis terhadap hasil penelitian mengindikasikan ekstrak daun dewandaru mampu memberikan penghambatan pertumbuhan terhadap Fusarium sp. Penghambatan pertumbuhan optimal ditunjukkan pada perlakuan ekstrak 5% dengan rerata diameter koloni 1,00 ± 0,24 cm dan persentase penghambatan pertumbuhan 70,31±3,21%. Dengan demikian, ekstrak daun dewandaru berpotensi digunakan sebagai alternatif biofungisida dalam pengendalian penyakit akibat infeksi Fusarium sp.

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“…Therefore, the presence of the disease could not be ignored, because even though the Foc attack was rather slow, if onions were infected it could cause plant death. Foc fungus control by farmers generally still involves synthetic fungicides whose use could cause various negative effects, especially pesticide residues that are harmful to the environment and human health [6,7]. Residues left in agricultural products often worry people who consume foods such as vegetables and fruits because they could endanger health.…”

Section: Introductionmentioning

confidence: 99%

Potential of LocalBacillusspp. Isolates as Wilt Disease Biocontrol Agents forFusarium(Fusarium oxysporumf. sp.cepae) on Wakegi Onions (Allium×wakegiAraki)

Asrul

2023

Preprint

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The use of biological agents as a biocontrol against plant pathogens was often ineffective because it worked slowly. The objective of this research was to examine the potential of local isolates of Bacillus spp. as a biocontrol agent in suppressing Fusarium wilt disease (Fusarium oxysporum f. sp. cepae) on wakegi onions. The research was designed using a completely randomized design with the treatment of rhizosphere bacterial isolates. The treatments consisted of control (without isolate application), isolates KP17, KP5, DB9, DB12, DB18, DG4, and DG11 so that the number of treatments was eight. Each treatment was repeated 5 times and each replication consisted of 10 wakegi onion plants. This research was divided into 2 stages, namely laboratory research which included isolation, characterization of colony morphology of rhizosphere bacterial isolates, and in vitro testing of the inhibitory power of biocontrol agents against pathogens. The test in the greenhouse was in the form of a disease case suppression test. The results obtained seven candidate isolates of biocontrol from 46 isolates obtained from the rhizosphere of the wakegi onion. These isolates had similarities with Bacillus spp. based on colony morphology, physiology, and biochemistry characteristics. Among the isolates found, the DB12 isolate had the potential to be developed as a biocontrol agent compared to other isolates.

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Uji In-Vitro Kemampuan Ekstrak Metanol Bunga dan Daun Tanaman Kembang Telang (Clitoria ternatea L.) dalam Menghambat Pertumbuhan Jamur Fusarium oxysporum f.sp. cepae

Cited by 8 publications

References 5 publications

Understanding farmer knowledge and site factors in relation to soil-borne pests and pathogens to support agroecological intensification of smallholder bean production systems

Understanding farmer knowledge and site factors in relation to soil-borne pests and pathogens to support agroecological intensification of smallholder bean production systems

Aktivitas Biofungisida Ekstrak Daun Dewandaru (Eugenia uniflora L.) dalam Menghambat Pertumbuhan Fusarium sp. Secara In Vitro

Potential of LocalBacillusspp. Isolates as Wilt Disease Biocontrol Agents forFusarium(Fusarium oxysporumf. sp.cepae) on Wakegi Onions (Allium×wakegiAraki)

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