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USE OF MAGNETIC WATER AND SOME BIOLOGICAL AGENTS TO CONTROL Pythium aphanidermatum ON CUCUMBER | ||
| The Iraqi Journal of Agricultural Science | ||
| Article 1, Volume 39, Issue 1, 2008, Pages 54-58 | ||
| Author | ||
| Oadi N.Al-Hadeethy | ||
| Abstract | ||
| This experiment was carried out at College of Agriculture/Univ. of Baghdad, Dep. Of Plant Protection .This study was amid to evaluate the magnetic field treatment 300 Cjlo cucumber seed and 600 G to irrigated water and study interaction with biocontrol agent {Pseudomonas spp,B.subtilis ,T. harzianum) and pesticide Chinosol 50% against the pathogen Pythium aphanidermatum that cause damping off and root rot disease to cucumber. The result of pathogenicity test was showed the occurring of symptom after 48 h from inoculation of cucumber seedling. The green house experiment result showed that emergenc of cucumber seedling irrigated with magnetic water was faster than those seedling irrigated with untreated water 8%. The percentage of emergence were 83.3 and 75% for magnetic and non-magnetic water respectively. The addition of B. subtilis T. harzianum and Chinosol 50% to Pythium infested soil give significant increased the seed emergence compared with pathogen only or pathogen+Pseudomonas spp that reached 50 , 50 , 50 , 33.3 and 33.3% respectively The disease percentage result showed decreased in pathogen+Pseudomonas spp, Pathogen+ B subtilis ,Pathogen + Chinosol50% compared with Pathogen + T. harzianum and pathogen only that reached 41.6 , 58.3, 41.6 , 66.6 , 83.3% respectively . No significant difference in dry weight between the treated psXhogtn+Pseudomonas spp , Pathogen+ B. subtilis and Pathogen + T. harzianum it reached 0.24 , 0.48 and 0.53 g respectively , compared with Pathogen + Chinosol 50% and magnetic water treated only increased in dry weight reached to 0.97 and 0.6lg respectively .Severity infection result showed significant decreased in Pathogen+ B. subtilis , Pathogen + T. harzianum and Pathogen + Chinosol 50% treatment compared with pathogen +. magnetic water treated reached to 25 , 25 , 37 and 75% respectively. The high severity infection was in pathogen+Pseudomonas spp treatment it reached to 100%. | ||
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