تاثير بعض المواد العضوية وتركيز مبيد سوبر سيرين في المحتوى والتضاد الميكروبي للتربة

Abstract

Perform research laboratory, using loam soil brought from agricultural fields in the city of Ramadi, 100 km west of Baghdad, on the banks of the Euphrates River and the areas are not used for the duration of pesticides by more than ten years prior to sampling. Pesticide use Super serain as a pesticide which is commonly used at a dose of 1500 mg L-1 and added to a concentration of transactions soil different concentrations 0, 1500 and 3000 mg L-1 with the addition of organic material laboratory, Using organic matter by 1% of glucose (sugar) and alfalfa hay levels with treatment control and incubated transactions under conditions of semicontrolled for 20 and 60 days, during which the follow-up content microbial measured the total number of bacteria and fungi, and the total number of Actenomycetes and the total number of bacteria degrading cellulose and the amount of carbon soil organic. The most important results: increase the number of microbes within a period of 60 days reached to 12.7% of the microbial density,9.4% for fungi - analyzers cellulose and 23.39% Actenomycetes, but the content of soil organic carbon, decreased by 16.89% for a period of 20 days. Received significant decrease numbers of microbes in addition the effect of 300 mg l -1 of pesticide Super serain duration of 20 days amounted to 6.519 and 3.63, and 3.012 and 3.637 Log cfu.g-1 density, microbial fungi, Actenomycetes analyzers and cellulose, respectively, and the continued impact of a rate reduction after less than 60 days duration. The addition of glucose and clover significant effect in the increase in the number of microbes and amounted to 7.964, 7.734 and 4.852, 4.914 and 3.673, 3.562 and 4.852, 4.914 Log cfu.g-1 for the density of microbial , fungi , Actenomycetes - analyzers cellulose respectively for 20 days and continued impact of decline level with a duration of less than 60 days. While showed interaction treatment twice a dose recommendation without adding organic matter less content reached 5.650 , 2.148 , 2.688 and 2.148 Log cfug-1 for the density of microbial and fungi and Actenomycetes and analyzers cellulose, respectively, an imbalance for cuddling 20 days, and the continued impact of the decline less with a period of 60 days. Found increased content of the soil carbon with the use of a dose twice the recommendation to reach 150 mg kg -1 , and the increased concentration of carbon addition of glucose and alfalfa to reach 129 and 118 mg kg-1 , and showed interaction treatment of 300 mg l-1 of pesticide Super serain with glucose, significant effect on the carbon content, reach 180 mg kg1 with incubation for 20 days, and the continued impact of the transaction in the same direction after a period on lap 60 and at a lower level.