Evaluation and comparative effects of new registered acaricides and water application in control of fig mite pests (Eotetranychus hirsti, Eriophyes ficus) in irrigated and rain fed fig orchards in Estahban and Saveh regions.
2010
Arbabi, Masuod | Rasteghari, Nozar | Tabatabaei, Ziyaodin | Golamey, Hamid | Baradaran, Parvaneh
Out of 30 thousand hectares orchards fig tree under irrigated and rain fed conditions in Iran, more than 25 thousand hectares are allotted for dried fig fruit cultivation in Estahban in Fars province. Two mite pest species (Eotetranychus hirsti, Eriophyes ficus) playing major role of damages on fig trees Iran. An investigation to reduce or control fig mite pests and further to protect their natural enemies through recommended and lower doses of newly registered acaricides (Fenazoquine SC 5%, Fenpyroximate SC5%, Proparogite 570EW, Hexythiazox EC 10%, Baroque 10% SC, Spirodiclofen 240 SC) along with two amount of water sprays conducted for irrigated and rainfed fig tress in two places of Iran. The amount of 4-7 liters spray of each treatment used to over come mite problems on 7 to 10 years old Piazi fig variety tree. Effective of treatments were carried out with random collection of 50 leaves from each treatments at interval of one day before and 5, 15 and 25 days after application in Saveh region on eriophyid mite infestation. Mean mortality% from collected data, analysis with SAS/SPSS and grouping them done with DMRT method. Total effects of lower dose treatments showed more control (81.23%) than registered treatment doses (73.43%). Lower dose of proparogite could be more effective (94.48%) and placed in group of a while lower rate (4 liters) of water spray controlled only 23.49% eriophyid mite and which placed in ranking treatments of group d . But water spray with medium rate (6 liters) showed control effects of 79.62% mite pest in Saveh region. Maximum difference mite mortality between lower and higher doses recorded 60.12% for proparogite and only recommended dose of spirodicolfen was able to control more active mite pest stages than the its lower dose Acaricides spray on four sites of the lower parts of the fig leaves found varied and maximum and minimum control % recorded in upper (87.50%) and lower (71.90%) parts of fig leaves respectively. Result of fig spider mite control in Estahban indicating that, lower dose of fenazoquine could reduce 82.20% active mite stages whereas recommend dose of Hexythiazox was able to control only 19.01% and placed them in Duncan grouping a and f respectively. Effects of treatment on fig spider mite at five sampling interval significantly at one percent error observed differed, which sustainable effects recorded up to 25 days then mite mortalities reduced below 60%. Results of water spray on spider mite pest was found weak because time application done late and excess number of active mite stages. If considering economic threahold of less than 5 active mite stages for water spray application and repeated that 2 or 3 times at 7 to 10 days interval, then fig mite control could be achived for organic fig productions in Iran. Keys words: Fig trees, Irrigated and rain fed, Mite pests, Acaricides, Water spray, Saveh, Estahban
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