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All Journal Indonesian Journal of Agricultural Science Buitenzorg: Journal of Tropical Science
Asih Kartasih Karjadi
Balai Penelitian Tanaman Sayuran, Jl. Tangkuban Parahu No. 517, Lembang, Bandung Barat 40791
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science Health Professions

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COMBINING EFFECTS OF CULTURAL PRACTICES AND RESISTANT CULTIVARS ON REDUCING THE INCIDENCE OF Meloidogyne spp. AND Thrips palmy Karny ON POTATO Setiawati, Wiwin; Karjadi, Asih Kartasih; Soetiarso, Thomas Agoes
Indonesian Journal of Agricultural Science Vol 11, No 2 (2010): October 2010
Publisher : Indonesian Agency for Agricultural Research and Development - MOA

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Abstract

Root-knot nematode (Meloidogyne spp.) and melon thrips(Thrips palmy Karny) are two serious pests on potato. Thesepests are conventionally controlled with synthetic pesticides.Cultural practices based on integrated pest management (IPM)are alternative methods to control these pests. The study aimedto determine the effectiveness of combined applications ofcultural practices and potato cultivars in reducing the incidencesof nematode and thrips. Treatments evaluated were methods ofnematode and thrips control by implementing IPM and conventionalpractices. A split-plot randomized complete block designwith four replications was used. The main plots were IPM orcultural practices (subsoiling, soil solarization and use of trapcrop of marigold Tagetes erecta) and conventional practicesusing synthetic pesticides. The subplots were five potato cultivars,i.e. No. 095 (Herta x FLS–17), 720050/Kikondo, 676068/I.1085, Granola, and Atlantic. The results showed that applicationsof cultural practices in combination with potato cultivarsreduced Meloidogyne spp. population and potato tuber damageby 53.70% and 61.36%, respectively, as well as a significantlydecreased thrips population. In the cultural control plots, thripspopulations were below the action threshold (10.0 nymphs perleaf), therefore no single application of pesticide was used. Thiswas in contrast to the conventional control treatments whereinsecticide was spayed 10 times until harvest. The subsoiling andsolarization cut off the life cycle of the thrips and any survivethrips were trapped by marigold plant. Population of T. palmion the five potato cultivars differed significantly; the lowestpopulation was found on the cultivars No. 095 (Herta x FLS-17)and 676068/I.1085. The cultural control practices combinedwith potato cultivar No. 095 (Herta x FLS–17) were the besttreatment for controlling Meloidogyne spp. and T. palmi onpotato and also produced the highest yield (31.01 t ha-1). Thestudy suggests that cultural control practices in combination withresistant cultivars are recommended as a suitable IPM to controlnematode and thrips on potato crops.
Performa fase vegetatif bawang merah persilangan (Allium fistulosum L. x Allium cepa L. var. aggregatum) dengan aplikasi dark septate endophyte Azmi, Chotimatul; Saadah, Imas Rita; Pinilih, Joko; Faoji, Noor; Ahmadi, Noor Roufiq; Surono, Surono; Karjadi, Asih Kartasih; Soedomo, Prasodjo
Buitenzorg: Journal of Tropical Science Vol 1 No 1 (2024): Buitenzorg: Journal of Tropical Science
Publisher : Innovation Centre for Tropical Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70158/buitenzorg.v1i1.5

Abstract

Dark septate endophyte (DSE) application on shallot is still quite uncommon. This study investigated DSE application on crossed-shallot (Allium fistulosum L. x Allium cepa L. var. aggregatum) in the highlands of Lembang, West Java, Indonesia. Four treatments (Dendrothyrium sp. strain CPP 1.1.44, Curvularia sp. strain TKC 22, and Cladosporium sp. strain KSP.1 and control) with four replications on crossed shallot were investigated. Fresh weight, number of bulbs, number of pseudo-stems, number of leaves, plant height, pseudo-stem diameter, and leaf diameter were measured at 5, 7, 9, 11, and 13 weeks after planting (WAP). All treatments were freshly picked and weighed at 16 WAP. The results showed that crossed-shallots have different responses among treatments. However, all treatments showed the same response for maximum growth time. The highest values for the number of pseudo-stems, number of leaves, plant height, pseudo-stem diameter, and leaves diameter were reached at 13, 11, 9, 9, and 9 WAP, respectively. All treatments were harvested at 16 WAP, 3–8 weeks longer than shallot parental plants (A. cepa L. var. aggregatum). Applying three DSEs was likely to reduce the number of pseudo-stems from crossing lines of shallots and bunching onions. DSE KSP.1 treatment demonstrated an increase in plant height and the number of bulbs. Meanwhile, TKC 22 treatment showed to increase plant height, pseudo-stem, leaf diameter, and fresh weight.   Keywords: dark septate endophyte, shallot, harvest time, pseudo-stem
Co-Authors Chotimatul Azmi, Chotimatul Faoji, Noor NOOR ROUFIQ AHMADI, NOOR ROUFIQ Pinilih, Joko Prasodjo Soedomo Saadah, Imas Rita Surono Surono Thomas Agoes Soetiarso Wiwin Setiawati