scholarly journals Model Selection in Describing Disease Progress Curve of Fusarium Wilt (Fusarium oxysporum F.SP. Sesami) Disease in Sesame Varieties

Author(s):  
Assefa Abadi Kebede ◽  
Weres Negash Golla

An epidemic of disease is the progress of the disease in time and space. The objectives of the present study are to understand and compare the four nonlinear models for disease progress curves of five sesame varieties. The regression parameters estimation, standard error, R-square, Akaike Information Criterion (AIC) and Bayesian Information Criterion (BIC) were estimated. The lowest values of standard error and the highest values of R-square were calculated from the monomolecular model. Also, the result showed that; the disease progress curve better fitted within the monomolecular model for each varieties with the smallest AIC and BIC values. This model is appropriate for modelling epidemics where there is a monocycle within a growing season. The Monomolecular model allows the estimation of the disease progression rate and an area under the disease progress curve was carried out to know the level of reaction to the disease. The lowest rate of fusarium wilt disease was recorded from Hirhir followed by Setit-2. However, the highest value was recorded from Setit-3 followed by Setit-1. A highest value of area under disease progress curve (AUDPC) was calculated from Setit-3. However, the lowest was calculated from Hirhir. Varieties with low disease incidence could be useful in breeding programs aimed at developing varieties with higher resistance to Fusarium wilt disease.

2018 ◽  
Vol 2018 ◽  
pp. 1-7
Author(s):  
Yigrem Mengist ◽  
Samuel Sahile ◽  
Assefa Sintayehu ◽  
Sanjay Singh

A 2-year experiment was conducted at wilt sick plot infested with natural occurring Fusarium oxysporum f.sp. ciceris at Adet Agricultural Research Center in northwestern Ethiopia with an aim to evaluate effective chickpea varieties and fungicides for the management of chickpea fusarium wilt in order to integrate chickpea varieties and fungicides. Four varieties, namely, Shasho, Arerti, Marye, and local, two fungicides, namely, Apron Star and mancozeb, and untreated local chickpea were used as treatments. Treatments were arranged in a factorial combination in randomized complete block design in three replications. There were significant differences at p<0.05 in the overall mean of fusarium wilt disease incidence, area under disease progress curve %-day, yield and yield components among varieties and fungicides treatments. Data were analyzed using SAS system version 9.2. The results indicated that the maximum disease incidence and area under disease progress curve values 65.62% and 578.5%-day, respectively, were recorded from untreated local chickpea, while the minimum disease incidence and area under disease progress curve values 23.41% and 147%-day, respectively, were recorded from Shasho variety treated with Apron Star. The maximum biomass and grain yield of 6.71 t/ha and 4.6 t/ha, respectively, were recorded from Shasho variety treated with Apron Star while the minimum biomass and grain yield of 0.62 t/ha and 0.21 t/ha, respectively, were recorded from untreated local chickpea. Thus, the experiment results suggested that the variety of Shasho treated with fungicide Apron Star caused significant reduction in chickpea fusarium wilt incidence leading to a corresponding increase in grain yield of chickpea.


2017 ◽  
Vol 35 (1) ◽  
pp. 027-035
Author(s):  
Alaa Ibrahim ◽  
◽  
Omar Hmmoudi ◽  
George Asmar ◽  
Naser Sheikh Suleiman ◽  
...  

Author(s):  
Ahmed M. Aldinary ◽  
Amer Morsy Abdelaziz ◽  
Ayman A. Farrag ◽  
Mohamed S. Attia

Author(s):  
Kexin Ma ◽  
Jinming Kou ◽  
Muhammad Khashi U Rahman ◽  
Wenting Du ◽  
Xingyu Liang ◽  
...  

2010 ◽  
Vol 62 (3) ◽  
pp. 963-973 ◽  
Author(s):  
Vladimir Krasikov ◽  
Henk L. Dekker ◽  
Martijn Rep ◽  
Frank L.W. Takken

2014 ◽  
Vol 31 (1) ◽  
pp. 165-174 ◽  
Author(s):  
Kyaw Wai Naing ◽  
Xuan Hoa Nguyen ◽  
Muhammad Anees ◽  
Yong Seong Lee ◽  
Yong Cheol Kim ◽  
...  

AgriPeat ◽  
2019 ◽  
Vol 20 (01) ◽  
pp. 19-26
Author(s):  
Admin Journal

ABSTRACTThe role of Trichocompost and KCl fertilizer to control Fusarium wilt disease on onion in sandy soil. Fusarium wilt on onion is an interesting disease it is can loss the onion yield. The purpose of research to study trichocompost and KCl fertilizer role to control Fusarium wilt disease on ann onion. The research design used a Factorial Randomized Block Design with 2 factors. The first factor is 4 levels trichocompost, it is: without trichocompost (T0), trichocompost 10 t.ha-1 dosage (T1), trichocompost 20 t.ha-1 dosage (T2), trichocompost 30 t.ha-1 dosage (T3). The second factor is 3 levels KCl fertilizer, it is: without KCl (K0), KCl 100 kg.ha-1 dosage (K1), KCl 200 kg.ha-1 dosage (K2). Result of this research showed the application of trichocompost 10 t.ha-1 dosage and KCl 100 kg.ha-1 dosage can inhibit Fusarium wilt incubation time, can inhibit the patogen development with effective value 89,23%, the single factor it is aplication trichocompost 10 t.ha-1 dosage and trichocompost 30 t.ha-1 dosage not significant to dried onion bulb weight per clump of onion plant.Key words: Trichocompost, KCl fertilizer, Fusarium wilt disease, onion, sandy soil.ABSTRAKPenyakit layu Fusarium merupakan salah satu penyakit penting dapat menurunkan produksi bawang merah hingga 50%. Tujuan penelitian untuk mengetahui peranan trichokompos dan pupuk KCl dalam mengendalikan penyakit layu fusarium pada tanaman bawang merah. Penelitian menggunakan Rancangan Acak Kelompok faktorial dua faktor perlakuan. Faktor pertama 4 taraf dosis trichokompos yaitu: tanpa trichokompos (T0), trichokompos dosis 10 t.ha-1 (T1), trichokompos dosis 20 t.ha-1 (T2), trichokompos dosis 30 t.ha-1 (T3). Faktor kedua 3 taraf dosis pupuk KCl yaitu: tanpa pupuk KCl (K0), pupuk KCl dosis 100 KCl kg.ha-1 (K1), pupuk KCl dosis 200 KCl kg.ha-1 (K2). Hasil penelitian menunjukkan pemberian trichokompos 10 t.ha-1 dan pupuk KCl 100 kg.ha-1 dapat memperpanjang masa inkubasi penyakit, menekan serangan penyakit layu Fusarium dengan nilai efektivitas sangat baik (89,23%), perlakuan tunggal trichokompos dosis 10 t.ha-1 tidak berbeda nyata dengan dosis 30 t.ha-1 terhadap bobot umbi kering per rumpun tanaman bawang merah.Kata kunci: penyakit layu Fusarium, pupuk KCl, tanah berpasir, tanaman bawang merah, trichokompos.


2021 ◽  
Vol 39 (1) ◽  
pp. 1-5
Author(s):  
Hyoung-Rai Ko ◽  
Eun-Hyeong Park ◽  
Eun-Hye Kang ◽  
Hyo-Won Choi ◽  
Youngkee Lee ◽  
...  

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