Online ISSN: 2515-8260

Keywords : Fungicides


Evaluating faba bean cultivars and fungicide spray intervalsfor managing the chocolate spot (Botrytis fabaeSard.) diseaseinChelia district, West Shewa, Ethiopia

Kumela Regasa Tiki; Alemu Lencho; Thangavel Selvaraj; Kiran Ramaswamy

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 6, Pages 1403-1427

The experiment was conducted inFarmers Training Center (FTC)at Chelia district, West Shewa Zone, Ethiopiaespecially on cropping season of 2018,for evaluating four faba bean  cultivars (Walki,Hachalu, Asebeka and Local) and the efficacy of the fungicide, Trust –Cyomp 439.5 WP at the rate of 1.5 kg/ha at four various spray intervals (once in a week, after two weeks, after three weeks and unsprayed-control) based on conditions on the field for maintaining and managingfaba bean  chocolate spot disease and its impact on both yield and its relevant components. Entirely sixteen treatments are involved in factorial allignment in Randomized Complete Block Design (RCBD) with three replications. The chocolate spot disease incidence,criticality and region under disease progress curve were the highest in cultivar Local followed by Ashebeka, Hachalu and Walki in unsprayed plots. Among different spray intervals, weekly applied plots were found the most effective in disease reduction with maximum reduction in Walki and minimum in Local cultivar.The effectiveness of cultivars along with spray intervals of fungicide displayed significant variations in pods per plant, yield of the grain, and hundred seed weight; and had no significant effects on seeds per pod. The relative yield loss of 37.31,35.029.0 and 28.5% were recorded fromLocal,Ashebeka, Walki and Hachaluin unsprayed plots, respectively. Economic analysis showed that the highest net benefits were obtained from Hachalu and Walki(46400 and 44480 birr/ ha)when sprayed at every two weeks intervals and from Ashebeka and Local, the highest benefit (41760 and 36640 birr /ha) was obtained on every one week sprayed interval plots and the least was obtained from Local unsprayed plots (28160birr /ha). The Highest rate of margin based on return was achieved when it was sprayed at every two weeks intervals byAshebeka (374.3%) followed by Hachalu sprayed at every three weeks spray intervals (227%), but the lowest was obtained from local with spray of fungicide at every three weeks intervals (Birr 42%). The results of this study provide evidences that the reactive nature offaba bean cultivars to weekly and two weeks spray intervals of fungicide applications found to be effective in reducing chocolate spot severity and increased seed yield of faba bean cultivars under field conditions in Chelia district, Ethiopia.

Evaluation of garlic varieties and fungicides for the management of white rot disease caused by Sclerotium cepivorum Berk. in West Showa, Ethiopia.

Motuma Gemechu; Thangavel Selvaraj; Teshale Jifara; Amsalu Abera; Kiran Ramaswamy

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 6, Pages 1385-1402

In Ethiopia, onion is the most habitually cultivated vegetable and the next widely cultivated vegetable is Garlic(Allium sativum L.). It is mainly produced for the purpose of medical and nutritional treatments. Soil-borne fungus(Sclerotium cepivorum Berk.) spreads the white rot. It is very dangerous for garlic production and it totally destroys its production rate. Therefore, this research work mainly focuses to examine the effectiveness of fungicides involved in garlic production and improve the various varieties of garlic production in terms of its cultivation and also safeguard from the white-rot disease in west Shewa disease in West Shewa, Ethiopia. This field demonstration was done during the 2018/2019 cropping season at Ambo University Gudar Campus. It is arranged on the basis of 5 x 3 factorial treatment along with untreated control plots in an randomized complete block design with 3 replications and also combining five varieties namely Holeta, Chefe, Tseday (G-493), kuriftu and local cultiver (as check) and two fungicides namely Pro-seed plus 63 WS and Tebuconazole (Natura 250 EW). Before planting the Garlic cloves its was treated using fungicies. An entire of fifteen treatments had been examined per replication. On the basis of reducing disease epidemics and intensifying the garlic production over untreated plots, two fungicides had been very effective. These fungicide treated plots pro-seed plus was major effective while reducing the disease epidemics and also provide better production benefits. When compared to untreated plots, pro-seed plus treated plots reduces initial, final incidence and soverity as 57.12%, 35% and 64.25% and also recorded successfully. Then the results showed sufficiently great production rate and it was recorded from Tseday varieties treated with Pro-seed plus 63 WS (3.047t ha-1) followed by Kuriftu varieties treated with the same fungicides (2.973t ha-1) compared to the untreated control plots. Significantly,higher net profit was obtained from Pro-seed plus 63WS treated varieties compared to Tebuconazole and untreated control plots. Among various garlic varieties, Tseday (G-493) was the favourable in terms of reducing the disease epidemics also provide better production rate in terms of cultivation. However, for wider applications or recommendation of these management options, further research should be conducted with the same varieties combinations with fungicides against white rot under multi locations and in different seasons