Wakiah Nuryani
Indonesian Agency for Agricultural Research and Development

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Aplikasi dan efektivitas pupuk hayati dalam upaya perbaikan mutu produksi, produktivitas dan pengendalian serangan layu fusarium pada bawang merah Wakiah Nuryani; Hanudin Hanudin; Kurniawan Budiarto
Jurnal Agro Vol 7, No 1 (2020)
Publisher : Jurusan Agroteknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/5871

Abstract

Bawang merah (Allium ascalonicum L.) merupakan salah satu komoditas sayuran unggulan nasional yang mempunyai nilai ekonomi tinggi. Untuk pencapai target produksi yang maksimal, umumnya petani menggunakan pupuk dan pestisida kimia sintetik yang tinggi. Penurunan daya dukung lahan pertanian akibat penggunaan bahan kimia agroinput berlebihan mendorong penggunaan pupuk hayati berbahan aktif mikroba pemicu pertumbuhan terutama untuk mengurangi penggunaan pupuk kimia sintetik pada bawang merah. Penelitian bertujuan untuk mengevaluasi beberapa pupuk hayati yang dikombinasikan dengan pupuk kimia sintetik untuk meningkatkan kualitas pertumbuhan dan produksi bawang merah, serta menekan penyakit layu fusarium. Penelitian menggunakan Rancangan Acak Kelompok dengan 3 ulangan. Perlakuan berupa tiga jenis pupuk hayati, yaitu Agrofit, Bio Pf dan Biotrico dikombinasikan dengan dosis pupuk kimia sintetik yaitu sebesar 0, 25, 50, 75, 100% dari dosis rekomendasi. Hasil penelitian menunjukkan bahwa aplikasi kombinasi pupuk hayati Agrofit, Bio-Pf dan Biotrico dengan 50% dosis rekomendasi pupuk kimia sintetik dapat meningkatkan kualitas pertumbuhan dan bobot umbi kering sebesar 7.91 – 32.65% dari aplikasi pupuk kimia sintetik 100% dosis rekomendasi. Pada kombinasi Bio-Pf yang ditambah dengan 25% pupuk kimia sintetik dosis rekomendasi menunjukkan nilai efektifitas relatif agronomi dan nilai penekanan terhadap infeksi fusarium tertinggi. Kombinasi perlakuan ini juga memberikan total biomasa tidak berbeda pada dosis pupuk kimia sintetik 100%.                                                         ABSTRACT Shallot is one of important vegetables in Indonesia. Expecting high yield, farmers tend to apply high amount of chemical  fertilizer and shynthetic pesticide. The concern to the negative impacts of chemical agroinput in agriculture production has induced the application of biofertilizer containing beneficial microbes to reduce the use of synthetic fertilizers in shallot production. The research was conducted to evaluate several formulated biofertilizers combined with synthetic fertilizers on growth, yield and productivity improvement, and fusarium wilt control on shallot. The research was conducted at Sukabumi, West Java, Indonesia from March to August 2017. The combination of bio-fertilizer types, i.e. Agrofit, Bio-Pf and Biotrico and synthetic fertilizers in different dosages, i.e 0, 25, 50, 75, 100 % from recommended dosages were arranged in completely randomized block design with three replications. The results showed the application of bio-fertilizers might reduce 50% of synthetic fertilizer usage. The combined application of each bio-fertilizer with 50% recommended dosage of synthetic fertilizers improved growth quality and total dry bulb weight of 7.91 – 32.65% from 100% recommended dosage of synthetic fertilizer. The combination of Bio-Pf and Agrofit with 25% recommended synthetic fertilizer gave highest relative agronomic effectiveness value and fusarium wilt suppression. Total biomass weight of these treatments also had negligible differences with 100% synthetic fertilizers dosages. 
Synergistic Action of PGPR and Biofungicide with Active Ingredient of Cladosporium clasporioides to Control White Rust on Chrysanthemum Wakiah Nuryani; Hanudin Hanudin; Indijarto Budi Rahardjo; Kurniawan Budiarto
AGRIVITA, Journal of Agricultural Science Vol 44, No 1 (2022)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v44i1.3379

Abstract

The application of antagonist microbes to control significant diseases on crops is an essential issue in the eco-friendly and sustainable agriculture of the chrysanthemum production system. The application of antagonist consortiums is expected to synergistically suppress the pathogen more effectively than a single microbe, thus increasing the marketable flower yield. The research is carried out to evaluate the single and combined application of antagonists C. ladosporioides and PGPRs, B. subtilis, and P. flourescens to control white rust in Chrysanthemum. The results show that there is no cumulative effect from the combination of biofungicide and the PGPR on disease suppression, disease incidence, and plant growth improvement than single antagonist treatments. Compared to synthetic fungicide, biofungicide and the PGPR treatments give higher parasitism intensity, though the values were negligible among the treatments. The lowest disease intensity is recorded from synthetic fungicide treatment. The improvement of flower quality due to biofungicide, PGPR, and synthetic fungicide treatments was found only on the longer vase life than untreated plants. Observation on the compatibility of antagonists with PGPRs are still needed to increase the effectiveness in controlling white rust in Chrysanthemum.