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Integrates pest management for the control of red palm ... - Pubhort.org

Integrates pest management for the control of red palm ... - Pubhort.org

Table 9: Average weevil

Table 9: Average weevil catch by aggregated pheromone (Adult/Trap)(Field Experiment - 1995 and 1996 seasons).MonthSeason 1995 Season 1996SaadWest She BinAmmar Saad West She BinAmmarJanuary 0.7 0.4 1.4 0.5February 0.8 1.6 21.7 13.5March 14.3 15.0 37.8 30.5April 6.8 2.7 13.4 .6.4May 4.9 4.0 3.5 2.7June 6.3 3.0 3.4 1.5July 9.6 4.8 1.0 2.3August 0.8 1.5 1.4 0.1September . 0.8 1.8 1.4 0.5October 1.0 0.7 2.2 1.3November 1.3 0.5 0.6 0.8December 0.4 0.3 0.1 0.32. Large Scale Survey: Similarly catches increased in winter reachingmaximum in the eight Centres, with an average of 4.2 and 9.2 insect pertrap in March and April, respectively Again, catches decreased in numberduring the summer (Table 10).Table 10: Total number of weevil catch by aggregation pheromone(Season 1996)Month Abu AI Qattara Sulimat Saad Saad Fagah Wagan MonthSamara Ain West West South East averageOct. 26 35 17 34 93 66 13 6 0.6Nov. 70 56 16 . 77 268 120 53 22 1.5Dec. 56 26 12 43 143 84 16 9 0.8Jan. 39 18 28 25 99 88 10 12 0.7Feb. 165 37 9 114 190 100 164 34 1.5Mar. 338 117 46 212 658 217 278 77 4.2Apr. 947 328 145 708 1004 621 368 159 9.2May. III 148 22 27 326 90 61 7 1.7Jun. 65 109 9 43 183 112 73 11 1.3Jul. 12 219 22 16 171 115 731 18 1.4Aug. 77 184 22 7 159 68 72 10 1.3Sep. 72 132 8 16 89 83 19 34 1.0A correlation between the use of pheromone traps and weevilinfestation was observed. Infestation was reduced by 63.5% and 35.8%in the farms with or without pheromone traps, respectively (Table 11).278---- -- --- -- --

Table 11: Percentages of infested palm tree with or without aggregationpheromone traps and total number of weevil catch.CentreTotalNumber. Of infested palms Number of infested palms(pheromonepresentO (No pheromone)catch1995/96 1996/97 1995/96 1996/97Abu Samara 1.987 66 97 109 114Al Ain 1.409 694 116 433 69Qattara 356 5 8 161 209Sulimat West 1.322 61 48 273 116Saad West 3.383 164 41 289 117Saad South 1.764 63 82 59 139Fagah 1.100 52 16 7 9Wagan 399 17 2 56 118Total 11.711 1.122 410 1.387 891Percentage Reduction (%) 63.3 35.8From these results, spraying program for the control of Red PalmWeevil may be planned in January and February before the adults reachtheir maximum population in March and April. Adults should becontrolled before they lay their eggs, as larvae are the most destructivestage.REFERENCEL-.J~'11 ~ - LiJ .§j Jw .,hl .. ...11.-9 . 11 ~I ~I · ''\A., ~I.. r ~ '-'~ ~ J-" J.. ~ c.j.J ...~I~ - ~J~I ~1.Jj1IJ- ~}il ~I oJ,lj- u~411 ~ ~I ~1.)AjJ ~\j1 " '\AY '~J ~ ~~. f f' - f f. ~ :J..4 ~I ~~Abraham, V. A. Koya, K.M.A Kurian, C. 1975. Evaluation of seveninsecticides for control of red palm weevil Phynchophorus ferrugineus -Fabr. Journal of pant ation Crops. - Vol. 3 (2): 71-72.Dean, C. G. Veils, M., 1976 - Differences in the effects of red ringdisease on coconut palms in Central America and the Caribbean and itscontrol- Oleagineux 31 (7): 321-326, (Ja: 7705).El Ezaby, F. A., 1997 - Injection as method to control the red Indian datepalm weevil, Phynchophorusferrugineus - Arab J. Plant Prot. 15 (1): 31-38.279- - -- - - - -

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