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Register a new userLaboratory Study of Impact of some Insecticides and Balanced Fertilizer in a Number of the Soil Fungi that used as Biological Control Agents
دراسة مخبرية لتأثير بعض المبيدات الحشرية و السماد المتوازن في نمو بعض أنواع من فطور التربة المستخدمة كعوامل مكافحة حيوية
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Aِl-Baath University ورقة بحثية
Publication date
2017
fields
Biology
and research's language is
العربية
Created by
Shamra Editor
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اختبر في هذا البحث تأثير بعض المبيدات الحشرية كما درس تأثير استخدام السماد المتوازن. بينت النتائج بأنو عند استخدام المبيدان ديمتاميترين و كلوربيريفوس لم يلحظ تأثير سلبي للمبيد على نمو الفطور و انما في بعض الحالات لوحظ زيادة بسيطة في نمو الفطور؛ بينما عند استخدام هذه المبيدات بالتركيز الأعلى فإنه أدى إلى تثبيط كامل لنمو الفطور المدروسة.
A Study was carried out to evaluate the impact of some insecticide. The results showed that no effects on growth of the studied fungi were observation when Deltamethrin and Chlorpyrifos were used by the low concentration.
References used
AGRIOS, G. 2005- Plant Pathology,5th edition, Academmic Prees Inc, New York, 984
ALEXANDER, M. 1982- Introduction to soil microbiology. John Wiley and Sons, New York, 1450
ARX, J.A.V. 1970- The Genera of Fungi Sporulating in Pure Culture. J. Cramer, Vaduz, 2nd ed, 315
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The research was performed by isolating some species of soil- fungi from agricultural soils
handling with different pesticides and fungicides. Where the following fungi were isolated:
Aspergillus niger (The isolates A1 and A2), Fusarium oxysporum (
The isolate F),
Trichoderma harzianum (The isolate T). Also F. solani (The isolate F7) and T. viride (The
isolate T.v) were used, whereas they were taken from high studies laboratory- Science
Faculty- Tishreen University at a previous search.
The research was conducted to assay the ability of the previous fungi to degradation a
number of pesticides, the insecticide "Dolan", the insecticide "Plantocide", the nematicide
"Vydate" and the fungicide "Bayfidan", through the effect of double dose of each
pesticides in the biomass of the studied fungi on PDB medium. In addition to analysis the
results residues of pesticides using Spectrophotometer, and evaluation the pH values.
To study the effect of some fungicides invitro on an isolate of the fungus Cladosporium fulvum(cook) that causes leaf mold on tomatoes, five fungicides were tested Flint - Topsin-M- Score and Collisand Indofil-M at concentrations between 1 - 4000 p
pm. The results showed that Score and Indofil-M were the most effective fungicides inhibiting hyphal growth for the isolate even at 10ppm. Also, they inhibited completely the spores germinatios at the 100 ppm. The effects of fungicides Flint and Collis were weak on hyphal growth of the isolate and inhibited almost completely the spores germinatios at 1000 ppm. We didn,t observe clear inhibiting effects of Topsin-M on hyphal on the growth of the spores germinatios at 1000 ppm .
The experiment was carried out in Tartous Governorate in the Qubeiba region in the two agricultural seasons 2011 and 2012 to study the effect of different types of ploughs, the depth of plowing, and the timing of adding nitrogen fertilizer on some ph
ysical and chemical properties of the soil and some growth indicators of peanuts and its productivity. Three types of plows were used: MP ), disc plow ( DP ) and backhoe plow ( CP ) .
In this research, technical fabrics are used as blankets which prevent soil surface erosion and promote
seed germination as way to mitigation of desertification .
Five different types of fabrics are prepared of natural fiber: coir, hemp, jute, trea
ted cotton and raw
cotton, then three hydraulic properties for prepared fabrics are tested: swell, water absorption, water
vapour permeability.
It is found that all types of prepared fabrics are suitable to combat desertification whereas they have a
high water absorption and they reduce water evaporation, the fabrics of jute and treated cotton have the
highest water absorption and the fabrics of hemp and raw cotton have the lowest water vapour
permeability.
The study was carried out to comparison between of of three controlling treetments,
of soil-borne fungi in greenhouses. The treetments were as follows: An treeted control,
Formalin 3%, soil Solarization + animal manur and solarization for 50 days, and 0 , 5, 10
,15 and 20 cm depth.
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