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Studies on pea wilt disease caused by Fusarium oxysporum F. sp. pisi

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Title Studies on pea wilt disease caused by Fusarium oxysporum F. sp. pisi
 
Creator Pandit, Kuldhar Dineshkumar
 
Contributor Mogle, T. R.
 
Subject null
 
Description Wilt caused by Fusarium oxysporum f. sp. pisi (Linford) Synder and Hansen
of pea (Pisum sativum L.) has been found in severe proportion that causes accountable
qualitative and quantitative losses to the tune of 30 to 40 per cent in pea. Present
investigations on F. oxysporum f. sp. pisi were carried out during Rabi, 2009 with the
objectives viz., survey and surveillance in Latur district, isolation, pathogenicity,
symptomatology, cultural and morphological studies, effect of sowing dates, evaluation of
fungicides and bioagents, germplasm screening and effect of different soil types on the wilt
disease at the Department of Plant Pathology, College of Agriculture, Latur.
Survey of pea wilt disease incidence exercised in the Latur district revealed
average wilt incidence was of 21.60 per cent. Tahsilwise survey report indicated maximum
wilt incidence in tahsil Ausa (34.00%). The pathogen was successfully isolated on Potato
dextrose agar and proved it’s pathogenicity on pea Cv. Arkel under screen house conditions.
Of the seven culture media tested, Host leaf extract agar supported significantly highest
mycelial growth (88.00 mm), followed by Richard’s agar (86.00), Potato dextrose agar
(85.00 mm) and Czapek’s dox agar (80.00 mm).
Sowing of the pea crop should be done preferably during first fortnight of October,
so as to avoid the heavy incidence of wilt and ultimately to obtain maximum yields. The
fungicides viz., Thiram + Carbendazim (0.15% + 0.15%), Carbendazim (0.1 %) recorded
90.80 and 88.50 per cent inhibition of the test pathogen. Bioagents, T. harzianum followed
by T. koningii recorded significantly highest mycelial inhibition of 82.75 and 78.16 per cent,
respectively of the test pathogen. The seed treatment with Thiram + Carbendazin (0.15% +
0.15%) recorded highest disease control ( 87.04 %), and the bioagents T. harzianum + T
viride (0.4 + 0.4 %) recorded wilt control of 59.25 per cent.
Among twelve germplasm lines of pea, seven lines viz.. Soldier, KS-205, KS-
210, VP-215, PMR-53, VP-433 and VP- 434 were found moderately resistant to the wilt.
The pea wilt incidence was found maximum in black soil (96.40 %), followed by clay
(58.00 %), sandy loam (43.50 %) and sandy (39.70 %) soils.
 
Date 2018-06-06T10:05:19Z
2018-06-06T10:05:19Z
2010-05-05
 
Type Thesis
 
Identifier T06059
http://krishikosh.egranth.ac.in/handle/1/5810049540
 
Language en
 
Format application/pdf
 
Publisher Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani