Parathion Methyl ve Cypermetrin’in Toprak Mikroorganizmaları Üzerine Etkileri

Doç. Dr. Metin DIGRAK

Kahramanmaraş Sütçü İmam Universitesi, Fen Edebiyat Fakultesi, Biyoloji Bölümü,-KAHRAMANMARAŞ

Prof Dr. Sami ÖZÇELIK

Suleyman Demirel Universitesi, Ziraat Fakültesi, 32100 ISPARTA

ABSTRACT

In this study the effect of insecticides “(Korthion M or Parathion-methyl, t0,0-dimethyl-0-4-nitrophenyl phosphorothioate] and (Arrivo 20 EC or Cypermethrin, [Cyano-3-phenoxybenzenyl (+Cis, trans) 3- (2,2- dichloroviniyl- 2,2- dimethyl cyclopropane carboxylate) glycine]” which are commonly used in agriculture were investigated on soil microorganisms.

The parathion methyl from insecticides used in the study increased the number of actinomycetes and the total viable bacteria. This treatment had no inhibitory effect on the growth of the aerob endospore-forming and proteolytic bacteria and on the number of anaerobic bacteria whereas the growth of mold, yeasts and cellulolytic bacteria was adversely affected.

On the other hand, the aerob endospor-forming and proteolytic bacteria number was found to be similar with that of control groups in the cypermethrin-treated soil. It was determined that the number of cellulolytic bacteria and mold-yeasts were adversely affected. The number of the total viable bacteria was found to be similar with that of control groups until 10th day of incubation. Thereafter the number of viable bacteria in the soil treated with cypermetrin was found more than that.

Temmuz-Agustos-Eylul 2002, Sayu44 25

Cilt: 11 Sayi: 44 (2002), 25-29