Alfi Inayati
Indonesian Legumes and Tuber Crops Research Institute (ILETRI),Jalan Raya Kendalpayak KM 8, PO BOX 66, Malang East Java, Indonesia, Phone :+62341 801468, Fax: +62341 801496,

Published : 5 Documents
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ULAT JENGKAL PADA KEDELAI DAN CARA PENGENDALIANNYA Inayati, Alfi; ., Marwoto
Buletin Palawija No 22 (2011)
Publisher : Balai Penelitian Tanaman Kacang-kacangan dan Umbi-umbian

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Abstract

Ulat jengkal (looper) pada tanaman kedelai (Glycine max L. Merrill) terdiri dari tiga jenis, yaitu Plusia chalcites (Esper) (=Chrysoideixis chalcites), Pseudoplusia includens (Walker), dan Thysanoplusia oricachlea. Pada tanaman kedelai di Indonesia ulat jengkal tergolong hama utama yang memakan daun. Kerusakan daun yang disebabkan oleh ulat jengkal dapat menyebabkan kehilangan hasil sampai dengan 18%. Pengendalian ulat jengkal harus dilakukan dengan cermat dengan memperhatikan ambang kendali agar tindakan pengendalian yang diambil tepat, hemat secara ekonomi dan aman bagi lingkungan, sesuai dengan konsep pengendalian hama terpadu (PHT). Komponen PHT ulat jengkal pada kedelai terdiri dari pengaturan pola tanam, penggunaan varietas tahan, pemanfaatan musuh alami dan penggunaan insektisida yang efektif.
TANGGAP GENOTIPE KACANG TANAH TERHADAP PENYAKIT BERCAK DAUN CERCOSPORA DAN KARAT DAUN PUCCINIA Inayati, Alfi; Yusnawan, Eriyanto
Jurnal Fitopatologi Indonesia Vol 12 No 1 (2016)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (354.51 KB) | DOI: 10.14692/jfi.12.1.9

Abstract

Leaf spot and rust are two important diseases on groundnut. Both diseases are frequently found at the same time that influence the growth and reduce the yield of groundnut. This study was conducted to evaluate thirteen groundnut genotypes resistance to leaf spot and rust disease.  The experiment was conducted using a split plot design and three replications, with inoculated and uninoculated treatment as main plot, and  groundnut genotypes as the sub plot.  Disease assessment was conducted by counting number of pustules per leaf, the number of spots per leaf, rust disease intensity, the intensity of leaf spot disease, and leaf area index. Yield components including stover weight, number of pods per plant, number of empty pods, number of chipo pods, and weight of pods per plant were recorded for both inoculated and uninoculated plants. The result showed that leaf spot disease developed earlier than rust disease. Only one genotype was susceptible to rust and the other 12 genotypes were very susceptible, whereas all genotypes tested were very susceptible to leaf spot. The intensity of rust and leaf spot diseases was negatively correlated with yield (r = - 0.1 ? (0.4)). Rust and leaf spot diseases reduced the yield components including stover weight (73.2%), number of pods (68%), and weight of pods (72.5%). The number of empty pods and chipo pods were increase to 81% and 56.4% respectively. 
Tanggapan Planlet Vanili yang Diradiasi dengan Sinar Gamma dan Keragaannya Setelah Diinokulasi dengan Jamur Fusarium oxysporum f.sp. vanillae Mangoendidjojo, Woerjono; Hadisutrisno, Bambang; Inayati, Alfi
Jurnal Perlindungan Tanaman Indonesia Vol 6, No 2 (2000)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.12390

Abstract

Vanilla is one of spice crops and important to world commerce. Indonesia is one of producing and exporting countries for decades. Recently, the planted area tends to decrease due to several factors. One of them is fusarium wilt caused by Fusarium oxysporum fsp. vanillae. The disease ranked among the most devastating disease attacking vanilla plants. The most effective method controlling fusarium wilt is the use of resistant varieties. The study aimed to know responses of vanilla plantlets irradiated by Gamma rays at several doses (0-4 krad). Five months after irradiation, the survival mutant plantlets were inoculated with suspension of the F. oxysporum fsp. vanillae to evaluate their resistance. Data of first concern taken were survival plantlets; number of leave, root, and sucker initiation; and infection intensity. The results indicated that higher the doses, decreased the survival plantlets. The applied doses performed significantly differences on the number of leave, root, and suckerinitiation. The untreated plantlets showed better responses as compared to those treated. Evaluation on their resistance after inoculation indicated that the survival plantlets irradiated at 3 and 1 krad showed lower infection intensity, eventhough variation within a treatment was observed. Evaluation on the individual plantlet basis seemed to be more helpful in order to identify mutant plantlets with better resistance.
Characteristics of superior soybean breeding lines tolerance to rust (Phakopsora pachyrhizi Syd.) Inayati, Alfi; Yusnawan, Eriyanto
Biosaintifika: Journal of Biology & Biology Education Vol 8, No 1 (2016): March 2016
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v8i1.5081

Abstract

Soybean rust caused by Phakopsora pachyrhizi is one of the most important diseases which limits soybean production. The aim of this study was to evaluate the resistance of 28 superior soybean lines and their tolerance to rust. The study was conducted at a screen house and arranged in a completely randomized design (CRD); three replications. All genotypes tested were artificially inoculated with P. pachyrhizi, and a set of un-inoculated genotypes was planted as a comparison. Number of pustules was recorded weekly, and resistant criteria was rated based on the International working group on soybean rust IWGSR method. Lesion color (LC), sporulation level (SL), number of uredia (NoU), frequency of pustule which had uredia, and yield were also recorded. Among 28 genotypes tested, only one was categorized as resistant and 2 genotypes were susceptible. Resistant genotypes had few pustules, lower AUDPC values, low disease severity, and Reddish Brown lesion type. Soybean rust affected yield components, i.e. number of intact pods and yield per plant. Yield loses due to rust in this study varied from 5-89%, and the average was 51%. The set of lines from Tanggamus pedigree showed more resistant to rust but less tolerant compared to Sinabung pedigree.How to CiteInayati, A., & Yusnawan, E. (2016). Characteristics of superior soybean breeding lines tolerancet to rust (Phakopsora pachyrhizi Syd.). Biosaintifika: Journal of Biology & Biology Education, 8(1), 47-55.
Antifungal Activity of Crude Extracts of Ageratum conyzoides, Cyperus rotundus, and Amaranthus spinosus Against Rust Disease Yusnawan, Eriyanto; Inayati, Alfi
AGRIVITA, Journal of Agricultural Science Vol 40, No 3 (2018): OCTOBER
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.v40i0.1889

Abstract

Puccinia arachidis is an obligate pathogen which infects peanut leaves and causes rust disease. Alternative controls of this disease, particularly to limit the frequent use of synthetic fungicide, have been conducted. One of which is by applying botanical fungicides. Crude extracts of Ageratum conyzoides, Amaranthus spinosus, and Cyperus rotundus were used to suppress the rust disease intensity on Bima peanut cultivar. A. conyzoides extracts at 2.5% and 5.0% concentrations were the most effective biofungicide to reduce the disease. The disease intensity (29.8 % and 30.2 %) recorded at 10 weeks after planting (WAP) was significantly lower than the untreated crops (41.4 %). Both weed extract applications reduced about 50 % of pustule number compared to untreated crops at 10 WAP. Applications of 2.5 % and 5.0 % of ageratum extracts saved yield loss of 67.5 % and 63.5 %. Caryophyllene was observed in the roots, stems, leaves, and flowers of ageratum extracts in considerable amounts based on GC-MS analysis and may attribute to its significant antifungal activity. Higher total phenolic and flavonoid contents were observed in ageratum extracts than in amaranthus and cyperus extracts. Ageratum extracts at concentrations of 2.5 % to 5 % could be used to control peanut rust disease.