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Survey of powdery mildew of fenugreek in Navsari district revealed that at flowering and pod formation stages, higher average intensity of 20.67 and 51.11 per was recorded in KVK, Navsari area and least was in 9.78 and 31.33 per cent Sandalpore village, respectively. Total average PDI of Navsari district was recorded 12.96 and 36.85 respectively, at flowering stage and pod formation stage of crop. The average length of conidia was maximum 49.76 μm in the samples collected from KVK, Navsari area, while minimum 38.08 μm was in the samples collected from Pethan village. Maximum breadth of conidia 21.55 μm in KVK, Navsari area and minimum 18.00 μm in Pethan village of Navsari district. The average length and breadth of conidia of all villages 43.73 μm length and breadth 20.24 μm, respectively. While length/breadth index was maximum 2.30 μm in KVK, Navsari area followed by Abrama 2.09 among the collected samples. In case of conidiophore maximum length in KVK, Navsari area 68.43 μm and minimum length in Crafeat area 58.83 μm. While, maximum length of conidiophores was recorded in KVK, Navsari area 6.78 μm and minimum in Cafetra 8.48 μm. The average of length and width of conidiophore was 63.73 μm and 7.67 μm, respectively.

Keywords

Powdery Mildew, Erysiphe Hyperici (Wallr. S Bulmer), Erysiphe Polygoni, Fenugreek, Survey.

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References

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Varietial and Germplasm Screening of Trigonella-foenum graecum L. against Powdery Mildew under Field Conditions in South Gujarat

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Authors

A. U. Gojiya ¹, J. R. Pandya ¹

Affiliations
1 Department of Plant Pathology, N.M. College of Agriculture, Navsari Agricultural University, Navsari (Gujarat), IN

Source

International Journal of Plant Protection, Vol 12, No 1 (2019), Pagination: 84-86

Abstract

Two variety and thirteen germplasms of fenugreek (Trigonella-foenum graecum L.) were screened against powdery mildew under field condition. One germplasm FGK-94 was found resistant reaction to powdery mildew. While, three gremplasms FGK-97, FGK-98 and FGK-103 found to be moderately resistance. FGK-95, FGK-96, FGK-99, FGK-100, FGK-101 and FGK- 102 showed moderately susceptible reaction. Two variety Hissar sonali, RMT-361 and one germplasm FGK-104 showed susceptible reaction.

Keywords

Trigonella-foenum graecum L., Varieties, Germplasms, Powdery Mildew, Screening.

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References

Dange, S.R.S., Patel, R.L., Patel, S.I. and Patel, K.K. (2002). Estimation of avoidable yield loss due to powdery mildew in mustard, J. Mycology & Plant Pathol., 32(2): 249-250.

Prakash, S. and Saharan, G. S. (1999). Source of resistance to downy mildew and powdery mildew of fenugreek, J. Mycology & Plant Pathol., 29(3): 383-384.

Rathi, A.S. and Tripathi, N. N. (1994).Assessment of growth reduction and yield losses in pea due to powdery mildew disease caused by Erysiphe polygoni DC, Crop Research (Hisar), 8 (2): 371-376.

In vitro Antagonistic Activity of Trichoderma Species against Important Soil Borne Pathogens

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Authors

N. N. Sohaliya ¹, D. M. Pathak ¹, J. R. Pandya ¹

Affiliations
1 Department of Plant Pathology, College of Agriculture, NAU, Campus Bharuch, Maktampur (Gujarat), IN

Source

International Journal of Plant Protection, Vol 12, No 2 (2019), Pagination: 127-131

Abstract

The rhizospheric soil samples were collected from different cultivated agricultural fields from Bharuch and Narmada districts and the mycoflora were isolated by serial dilution plate technique. Total eight isolates of Trichoderma viride, Trichoderma harzianum and Trichoderma longibrachiatum were isolated on Potato Dextrose Agar medium. The green coloured colonies were identified by comparing with taxonomic key. They were purified by single spore isolation method and maintained on PDA slants at 40C in the refrigerator at Department of Pl.Pathology, NMCA, NAU, Navsari. Soil borne Pathogenic fungi viz., Sclerotium rolfsii, Macrophomina phaseolina and Fusarium oxysporum were isolated from the respective diseased plants during field survey in Navsari Agricultural University farm, Navsari. The antagonistic efficacy against test pathogen was evaluated by dual culture plate technique. Among all 8 Trichoderma isolates, The Trichoderma harzianum NCJD8 isolate has showed 24.17 mm mycelial growth with 73.15 per cent inhibition of Sclerotium rolfsii, where in case of Macrophomina phaseolina, Minimum mycelial growth (32.67 mm) of test pathogen was recorded in T. longibracheatum NCJD2 isolate with 63.70 per cent inhibition which was statistically at par with T. viride NCJD6 (34.50 mm) with 61.67 per cent inhibition and when it comes to Fusarium oxysporum, T. harzianum NCJD5 showed minimum mycelial growth and highest per cent growth inhibition (75.56%) with 22.00 mm colony diameter of the pathogen after seven days of incubation which was statistically at par with isolate T. harzianum NCJD1 (72.96%) with 24.33 mm colony diameter.

Keywords

Antagonistic Activity, Soil Borne Pathogens.

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References

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