(2014). Effect of some organic fertilizers and biocontrol agents on the pathogenic fungus Rhizoctonia solani and potato growth and yield. , 2(2), 1-13.
. "Effect of some organic fertilizers and biocontrol agents on the pathogenic fungus Rhizoctonia solani and potato growth and yield". , 2, 2, 2014, 1-13.
(2014). 'Effect of some organic fertilizers and biocontrol agents on the pathogenic fungus Rhizoctonia solani and potato growth and yield', , 2(2), pp. 1-13.
Effect of some organic fertilizers and biocontrol agents on the pathogenic fungus Rhizoctonia solani and potato growth and yield. , 2014; 2(2): 1-13.

Effect of some organic fertilizers and biocontrol agents on the pathogenic fungus Rhizoctonia solani and potato growth and yield

Jornal of Al-Muthanna for Agricultural Sciences
Article 1, Volume 2, Issue 2, 2014, Pages 1-13
Abstract
Abstract
This study was conducted under filed condition at Al-Najme location in the North east Al- Samawa city,and under laborotary condition at college of Agriculture / Al-Muthanna Uni.during spring 2014 - 2013 using some organic fertilizers and biocontrol agents Trichoderma harzianum fungus Aspergillus niger and the bacteria Pseudomonas fluorescens and the yeast Saccharomyces cerevisiae to study their effect on R. solani and on growth and yield parameters of potato ( Solanum tuberosum L. C.V. Arizona class Elite). During 28 December 2013 to 3 may 2014. The results of this experiment revealed that the compost fertilizer F1 we significanty increased leaf area ,Total of chlorophyll , number of tubers , tuber weight and yield per plant reached ( 109.2 dsm2 , 32.08 SPAD , 7.75 tuber . plant-1, 102.12 g and 794.4 g. plant-1) compared with control F0, which achieved (78.3 dsm2, 27.48 SPAD, 6.21 tuber . plant-1, 98.10 g, 615.7 794.4 g. plant-1), respectively. The treatment of resistance biogent P5 caused significanty increased to leaf area ,Total of chlorophyll , number of tubers , tuber weight and yield per plant reached (117.6 dsm2, 37.35 SPAD, 7.66 tuber . plant-1, 106.67 g, 816.7 g. plant-1) compared with P1, as it gave (71.1 dsm2, 24.10 SPAD, 6.16 tuber . plant-1, 92.93 g, 579.2 g. plant-1), respectively.
Key words: organic fertilizers, bio-resistance factors (T. harzianum fungus A. niger and P. fluorescens bacteria and yeast S. cerevisiae ).
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