Use of Biological and Chemical Compounds for the Integrated Management of Apricot Powdery Mildew in Egypt
Sharkawy Sahar, S. A.
Fruit Diseases Research Department, Plant Pathology Research Institute, Agricultural Research Centre, 9 Gamaa Street, Egypt.
Asmaa M. Alkolaly *
Integrated Control Research Department, Plant Pathology Research Institute, Agricultural Research Centre, 9 Gamaa Street, Giza-12619, Egypt.
Kafsheer, D. A.
Maize and Sugar Crops Disease Research Department, Plant Pathology Research Institute, Agricultural Research Centre, 9 Gamaa Street, Giza-12619, Egypt.
*Author to whom correspondence should be addressed.
Abstract
This study aims to evaluate an integrated management program for powdery mildew caused by Sphaerotheca pannosa in apricot trees Prunus armeniaca, where four fungicides Copper, Carbendazim, Praiz and Topas) and three biocides ( Bio Z , Bio Arc and Activator Yeasts ) were evaluated in the first season 2020 in Ismailia and Beheira governorates in the regions of South Tahrir and Nubariya. All compounds significantly reduced the percentage of disease severity on leaves and flowers compared to the control, and the activator yeasts was among the best treatments, as it recorded in the last spraying a percentage of disease severity on leaves and flower 28.5% and 27.6% respectively compared with control 52.7 %and 56.2%, followed by the biocides Bio Z and Bio Arc.In the second season 2021, the compounds were evaluated during the flowering period, which led to their precipitation and the occurrence of plant toxicity for flowers at their highest rates with copper. As for the biocides compounds, they were completely safe.From here, an integrated control program was designed for two seasons 2022 and 2023 that combines fungicides and biocides. It is applied early before flowering. It gave excellent results, reduced the rate of fungicide use, and was safer and cost-saving.
Keywords: Apricot, powdery mildew, biological and chemical control
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References
Encyclopaedia Britannica; 2023.
Khan MW, Malik KA, Khan AM. Perithecial stages of certain powdery mildews including some new records-III. Indian Phytopath. 1975;28:199-201
Sharma AK. A new species of Phyllactinia (Erysiphaceae) from India. Trans. British Mycological Society. 1985;85:756-759.
Kaul TN. Diseases of stone-fruits in Kashmir. Horticulturist. 1967;2:52-58
Pandotra VN, Kachroo JL, Sastry KSM. Six powdery mildew from Jammu and Kashmir State. Proc. Indian Acad. Sci. 1968;67B:119-124.
Anonymous. Package of Practices for fruit crops 1995, Dr. Y.S. Parmar University of Hort. and Fty. Nauni, Solan. 1995:186.
Torre Almaraz R, De La, Ceballos Silva AP. Chemical control of peach disease at Acajete, Pucbla. Revista Mexicana de Fitopathologia. 1990;8:181-190.
Dong CO, Kim SB, Jang HI, Cho MD, Lee EK. Studies on the ecological characteristics and control methods of peach powdery mildew. Journal of the Korean Society for Horticultural Science. 1991;32:191-198.
Jones AL, Ehret GR, Garcia SM, Kesner CD, Klein WM. Control of cherry leaf spot and powdery mildew on sour cherry with alternate side applications of fenarimol, myclobutanil and tebuconazole. Plant Dis. 1993;77:703-706.
Huang JW, Chen JH, Chung WC, Yang SH. Chemical control of powdery mildew on Japanese apricot. Journal of Agriculture and Forestry. 1995;44:13-18.
Radwan MA, DR Darwesh.Effect of Integrated Control Program of Powdery Mildew Disease on Growth and Productivity of Apple. J. Plant Prot. and Path, Mansoura Univ. 2018;9(12):787–794.
Reuveni M, R. Reuveni. Efficacy of foliar sprays of phosphates in controlling powdery mildew in field-grown nectarine, mango trees and grape vines. Crop Protection. 1995;14:311-314.
Gomez KA, Gomez AA. Statistical procedures for agricultural research. New York: A. Lviley-Interscience Publication. 1984;678.
Hassan SS, Mabrouk, Gehan A. Monir1 and TahsinShoala. Biological and Chemical Control of Powdery Mildew (Sphaerothecapannosa(Wallr.) var. persicae) in Apricot. International Journal of Scientific Research and Sustainable Development: 2019;2(1):1-19.
El-Morsi AM, Abo-Elyousr KAB, Abdel-Monaim MF. Management of cucumber powdery mildew by certain biological control agents (BCAs) and resistance inducing chemicals (RICs).Archives of Phytopathology and Plant Protection. 2012;45(6):652–659
Hartati S, Wiyono S, Hidayat S, HandSinaga MS. Mode of Action of Yeast-Like Fungus Aureobasidiumpullulans in Controlling Anthracnose of Postharvest Chili .International Journal of Sciences: Basic and Applied Research (IJSBAR). 2015;20(2):253-263
Sugiprihatini D, Wiyono S, Widodo. Selection of yeasts antagonists as biocontrol agent of mango fruit rot caused by Botryodiplodi at heobromae. Microbiology Indonesia journal. 20115(4)0: 154-159.
Urquhart EJ, Punja ZK. Hydrolytic enzymes and antifungal compounds produced by Tilletiopsis species, phyllosphere yeasts that are antagonists of powdery mildew fungi. Canadian Journal Microbiology. 2002;48(3):219-29.