ETIOLOGY AND MANAGEMENT OF WILT COMPLEX IN BLACK PEPPER (Piper nigrum L.)
| dc.contributor.advisor | Ravichandra, N.G. | |
| dc.contributor.author | UMASHANKAR KUMAR, N. | |
| dc.date.accessioned | 2018-02-28T08:28:54Z | |
| dc.date.available | 2018-02-28T08:28:54Z | |
| dc.date.issued | 2016-10-20 | |
| dc.description.abstract | Black pepper (Piper nigrum L.), known as the “King of spices” and “black gold” is prone to attack by burrowing nematode, Radopholus similis and fungal wilt pathogen, Phytophthora capsici causing wilt complex and considerable yield loss. Roving survey in five major black pepper growing malnad regions of Karnataka during 2013-14 revealed maximum wilt complex incidence in Chickmagalur district (31.28 %) followed by Coorg (30.94 %), Uttara Kannada (29.3 %) Shivamogga (29.07 %) district and least was recorded in Hassan district (25.77 %). Maximum wilt complex was observed in Bilimalligesara cultivar (33.86 %) and lowest was in Karimunda (17.41 %) cultivar. R. similis was a predominant nematode with highest prominence values in all the taluks of malnad districts surveyed. Major plant parasitic nematode includes Radopholus similis, Meloidogyne inocgnita, Pratylenchus coffeae, Helicotylenchus multicinctus and Rotylenchulus reniformis. Major fungal pathogen includes Phytophthora capsici, Fusarium sp. and Rhizoctonia solani. Maximum number of lesions (63.20) and highest lesion index (3.80) on roots were recorded with R. similis alone followed by combined inoculation of R. similis and P. capsici (15 days before) with 53.60 and 3.40 number of lesions and lesion index respectively. Soil pH 5.50 to 6.00 favored both pathogens in soil. The cultivars, Girimunda, Malabar XL, Shakthi, Karimunda, and Panniyur- 1 were highly susceptible to R. similis with lesion index of 5.00. Panchami, Shreekara, Pournami and Thevam showed susceptible reaction to R. similis with lesion index 4.20, 4.00 and 3.80 respectively. None of the cultivars showed immune or resistant or tolerant reaction to wilt complex. Integrated application of Bordeaux mixture spray (before and after monsoon) + 50 g soil application of Trichoderma harzianum (15 days after spray) or Bordeaux mixture spray (before and after monsoon) + 50 g soil application of Purpureomyces lilacinum (15 days after spray) was most effective in managing wilt complex and also with increased cost benefit ratio. | en_US |
| dc.identifier.other | Th-11517 | |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810041399 | |
| dc.language.iso | en | en_US |
| dc.pages | 332 | en_US |
| dc.publisher | UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU | en_US |
| dc.sub | Plant Pathology | en_US |
| dc.subject | null | en_US |
| dc.theme | ETIOLOGY AND MANAGEMENT OF WILT COMPLEX IN BLACK PEPPER | en_US |
| dc.these.type | Ph.D | en_US |
| dc.title | ETIOLOGY AND MANAGEMENT OF WILT COMPLEX IN BLACK PEPPER (Piper nigrum L.) | en_US |
| dc.type | Thesis | en_US |