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ThesisItem Open Access STUDIES ON CHICKPEA (Cicer arietinum) RUST, A NEW EMERGING DISEASE IN MAHARASHTRA(MPKV, Rahuri, 2024) Dawale Mukund Balasaheb; Narute, T.K.Chickpea (Cicer arietinum L.) popularly known as gram, Bengal gram or Garbanzo bean, is one of the most significant food grain legume in the world, after common bean (Phaseolus vulgaris L.) and field pea (Pisum sativum L.). In defiance of higher total production, yields of chickpea are low due to many biotic and abiotic constraints. betwixt biotic constraints, more than 172 diseases have been reported sensitive to chickpea. Chickpea rust caused by Uromyces ciceris arietini, was considered a minor disease in past as it appears later in the season. However, recently severe outbreak has been reported to appear repeatedly year by year in some pockets, since last few years with change in weather patterns.The current investigation was carried out with a focus on epidemiology and management of chickpea rust disease.ThesisItem Open Access Management of Soil Borne Diseases of Chickpea (Cicer arietinum L.) with Newer Fungicides(MPKV, Rahuri, 2024) Shinde Akshay Sarjerao; Latake, S.B.Six fungicides were evaluated under in vitro condition for their efficacy in inhibiting mycelial growth of pathogen three fungi isolated from wilted chickpea crop. Among all the treatment, carboxin 37.5 % + thiram 37.5% WS found to be most to be most effective against Fusarium oxysporum f. sp. ciceri, Rhizoctonia bataticola and Sclerotium rolfsii with 93.20, 94.89 and 85.23 percent mycelial growth inhibition, respectively. It was followed by treatment of carbendazim 25 % + mancozeb 50 WS @ 0.15% with 92.55, 93.90 and 84.36 per cent mycelial growth inhibition of Fusarium oxysporum f. sp. ciceri, Rhizoctonia bataticola and Sclerotium rolfsii, respectively. However among all the treatments tebuconazole 5.4% w/w FS @ 0.2 % recorded least inhibition of Fusarium oxysporum f. sp. ciceri (55.57%), Rhizoctonia bataticola (55.57 %) and Sclerotium rolfsii (48.79 %). A field trial was conducted to test the efficacy of fungicides for controlling soil borne diseases infecting chickpea crop. Chickpea seeds were treated with six fungicides and seed treatment with fungicides under study significantly reduced the incidence of soil borne diseases over untreated control. The treatment of carboxin 37.5 % + thiram 37.5% WS @ 4gm/kg seed recorded least disease incidence i.e. 1.03, 1.71, 3.71 and 6.12 % at 30, 60, 75 and 90 DAS, respectively. It was followed by treatment of carbendazim 25 % + mancozeb 50 WS @ 3gm/ kg seed with 1.33, 2.42, 4.97 and 7.38 per cent disease incidence at 30, 60, 75 and 90 DAS, respectively. Accordingly highest disease control (82.77%) was recorded with treatment of carboxin 37.5 % + thiram 37.5% WS @ 4gm/kg seed followed by treatment of carbendazim 25 % + mancozeb 50 WS @ 3gm/ kg seed (79.22%).ThesisItem Open Access EVALUATION OF FUNGAL CONSORTIUM AGAINST WILT OF SENNA(MPKV, Rahuri, 2024) Gadhe Ajay Bhagwan; Navale, A.M.Senna (Cassia angustifolia) is a small perennial shrub and important medicinal plants Senna belong to family leguminoceae. It used in the preparation of cathartic, laxative and purgative drug. A wilt disease was observed in Senna in severe intensity causing damage to the vascular tissues resulting in defoliation and complete wilting of plant. Looking to severe intensity of this disease in this medicinal plant and huge losses incurred, it was decided to study the pathogen in details. Keeping in view the past research work and economic importance of crop the present studies entitled “Evaluation of fungal consortium against wilt of senna” were undertaken during 2021-23.ThesisItem Open Access STUDIES ON SEED MYCOFLORA ASSOCIATED WITH MOTH BEAN (Vigna acontifolia)(MPKV, Rahuri, 2024) Wagh Valmik Sanjay; Zanjare, S. R.The present investigation entitled “Studies on seed mycoflora associated with Moth bean (Vigna acontifolia)” was undertaken with a view to detect seed borne mycoflora and its impact on seed germination and seedling vigour index (in vitro). Similarly, different fungicides and bioagents were tested against different seed borne mycoflora and their positive effect on seed germination and seedling vigour index in Moth bean (in vitro) were studied. The investigation was conducted during 2022-23 and the laboratory studies were conducted in Seed Pathology Laboratory. The total work was conducted by adopting the standard procedure and methods.ThesisItem Open Access EVALUATION OF BIOCONSORTIA AGAINST FUSARIUM WILT OF PIGEONPEA (Cajanus cajan L.)(MPKV, Rahuri, 2024) Titar Aditya Somnath; Kolase, S.V.Pigeonpea production is constrained by diseases and insect-pests. In general, soil borne disease i.e. Fusarium wilt is more prevalent in central and peninsular India. Fusarium wilt diseases is soil borne in nature and once it appear in the field it is very difficult to control. In the Maharashtra region, it infects crops at the early growth stage of flowering and at later stages, resulting in yield losses ranging from 11 to 17%. Applying fungicides on frequently, destroyed beneficial microorganisms in the soil that were not intended targets and has led to environmental risks which includes soil and water pollution. As a result, biological control of plant diseases involving fungi antagonistic bacteria may be a practical solution for this serious soilborne disease. Research findings indicate that plants treated with antagonistic microbial consortia exhibited a considerable decrease in disease incidence in contrast to the application of single isolates. Keeping in view the past research work and economic importance of crop the present studies entitled “Evaluation of Bioconsortia against Fusarium Wilt of Pigeonpea (Cajanus cajan L.)” were undertaken during 2021-23.ThesisItem Open Access EVALUATION OF BIOCONSORTIA AGAINST STEM ROT DISEASE (Sclerotium rolfsii) OF GROUNDNUT(MPKV, Rahuri, 2024) Nidheesh B.S.; Narute, T.K.Groundnut (Arachis hypogeae) is one of the major oil seed crop India. It contains an average of 40.1 per cent of fat and 25.3 per cent of protein and every part of groundnut has its own commercial value. In fact, it plays a pivotal role in oilseed economy of India. Several diseases like stem rot, leaf stop, bud necrosis, etc., are responsible for decreasing the quality and quantity of groundnut production. Among them stem rot of groundnut caused by soil borne pathogenic fungi is a major problem and economically important soil borne disease. This pathogen causes yield loss of 20-30 per cent and may reach up to 80 per cent during severe condition. In order to control stem rot disease of groundnut best method is biological method which is efficient and eco-friendly method.ThesisItem Open Access EVALUATION OF FUNGAL BIOCONSORTIUM FOR THE MANAGEMENT OF BASAL ROT OF ONION (Allium cepa)(MPKV, Rahuri, 2024) Muddada Deepika; Narute, T.K.Onion (Allium cepa L.) is one of the most commonly grown vegetable crops in India. It is a significant agricultural commodity and widely cultivated in various regions of the country. However, onion cultivation in India faces several challenges, with fungal and bacterial diseases being major concern. Among fungal diseases, basal rot caused by Fusarium oxysporum f.sp. cepae can cause significant losses and pose a considerable threat to successful onion cultivation during recent years and hence An investigation was carried out on various aspects such as isolation and identification, symptomology and pathogenicity, cultural and morphological characteristics, and evaluation of fungal bioconsortium under In vitro and In vivo (Pot culture) conditions. The pathogen was isolated from diseased onion bulbs. The pathogenicity of the onion basal bulb rot pathogen was demonstrated using soil inoculation approach. Based on morphological characteristics of the pathogen, the fungus culture was identified as F. oxysporum f.sp. cepae.ThesisItem Open Access STUDIES ON SEED MYCOFLORA OF MAIZE (Zea mays L.)(MPKV, Rahuri, 2024) Bodake Vishal Vardhaman; Suryawanshi, A. V.One of the most significant biotic restrictions on seed production globally is the presence of seed-borne fungus. They are responsible for both pre- and post-emergence death of grains, affect seedling vigour and thus cause some reduction in germination and variation in plant morphology. Microorganisms especially fungi are the largest group which play a vital role in affecting the seeds quality. Early detection of the pathogen is the most crucial step in disease diagnosis and for management programs. The present investigation entitled “STUDIES ON SEED MYCOFLORA OF MAIZE (Zea mays L.)” was undertaken with a view to detect seed borne mycoflora and its impact on seed germination and seedling vigour index (in vitro). Similarly, different fungicides and bioagents were tested against different seed borne mycoflora and their positive effect on seed germination and seedling vigour index in maize (in vitro) were studied.ThesisItem Open Access STUDIES ON SEED BORNE MYCOFLORA ASSOCIATED WITH SEED DISCOLOURATION OF PADDY (Oryza sativa L.)(MPKV, Rahuri, 2024) RASKAR YOGESH TANAJI; Zanjare, S.R.All the isolated pathogens were found pathogenic to paddy seeds resulting into reduction in seed germination and seedling vigour index. The seed borne mycoflora viz., Aspergillus niger, Aspergillus flavus, Fusarium oxysporum, Alternaria alternata and curvularia lunata were found more dominant and aggresive. Among all the treatments of fungicides and bioagents, fungicidal seed treatments were found significantly superior in reducing seed borne mycoflora, increasing seed germination and seedling vigour index.
