Management of Deleterious Effect of Fusarium oxysporum Associated with Red Palm Weevil Infestation of Date Palm Trees

El-Sayed H. E. Ziedan, Mohamed Hashem, Yasser S. Mostafa and Saad Alamri
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El-Sayed H. E. Ziedan: Plant Pathology Department, National Research Centre, Dokki, Cairo 12622, Egypt
Mohamed Hashem: Biology Department, Faculty of Science, King Khalid University, Abha 61321, Saudi Arabia
Yasser S. Mostafa: Biology Department, Faculty of Science, King Khalid University, Abha 61321, Saudi Arabia
Saad Alamri: Biology Department, Faculty of Science, King Khalid University, Abha 61321, Saudi Arabia

Agriculture, 2022, vol. 12, issue 1, 1-10

Abstract: Red palm weevil (RPW) is a dangerous pest that infects the date palm tree and makes tunnels in the tree’s trunk. RPW infection is followed by secondary invaders of microorganisms that cause degradation of the trunk tissues leading to toppling the crown and death of the tree in a short time. This study showed that Fusarium oxysporum Schlecht. was the common fungal species isolated from the root and trunk tissues of the date trees infested with RPW, which recorded 100% of frequency. Pathogenicity of 4 isolates of F. oxysporum was confirmed on date palm seeds and seedlings. The results confirmed that all isolates involved in rot of the germinated seeds (40–100% incidence), root rot, and death of palm seedlings (20–100%) under artificial infection as well as degradation of date palm petioles. Application of 20 L/palm of systemic fungicide (Topsin) at 1% as foliar and soil drench of date palm for successive three times successfully reduced development of the deterioration and suppressed the growth of F. oxysporum . Interestingly this fungicide did not suppress the growth of Trichoderma viride Pers. So, our results recommend this fungicide to suppress the pathological and degradable activities of F. oxysporum during the integrated pest management of RPW on date palm trees.

Keywords: date palm; fungi; fungicide; management; red palm weevil; root rot (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
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