Root rot and disease incidence
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Chickpea (Cicer arietinum L.) is the third most important pulse crop of the world grown in semi- arid and tropical climate. It belongs to family Fabaceae. The major losses in chickpea yield are attributed mainly due to soil borne pathogens. Among them the dry root rot (DRR) caused by Rhizoctonia bataticola has become a major threat to chickpea production in recent years.
8p trinhthamhodang11 27-04-2021 14 2 Download
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Several investigators studied the effectiveness of chemical resistance inducers against root rot disease (Segarra et al., 2006) and hence this study was aimed to study the effect of chemically induced resistance in the management of PRSV in papaya.
10p chauchaungayxua11 23-03-2021 12 2 Download
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Pigeonpea (Cajanus cajan (L.) Millsp.) is one of the major pulse crop of tropics and sub tropics, cultivated by small and marginal farmers under rainfed condition. It is known to be affected by many fungal diseases among them dry root rot caused by Rhizoctonia bataticola (Taub.) Butler, is a major soil borne disease causing considerable yield loss in most of the pigeonpea growing regions of India more so in the North-Eastern Karnataka.
8p cothumenhmong9 18-01-2021 11 2 Download
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Stem and root rot and wilt diseases of sesame incited by Macrophomina phaseolina and Fusarium oxysporum f. sp. sesami respectively were serious biotic constraints for sesame production. Investigations have been formulated on dual culture technique, cut stem inoculation experiment and soil inoculation experiment in order to assess the interaction and combined effect of Macrophomina phaseolina and Fusarium oxysporum f.sp. sesami. Macrophomina did not showed any antagonistic effect towards Fusarium and vice versa in dual culture experiment.
5p cothumenhmong9 18-01-2021 10 2 Download
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The tomato crop attacked by early blight, late blight, leaf spots, anthracnose, Dampimg off, buckeye rot, wilts and root rots. Among these Damping off diseases in tomato caused by Rhizoctonia solani is very common to see in nurseries, an increased incidence of blight caused by Rhizoctonia solani was noticed in recent past in major tomato growing areas of Ranga Reddy district of Andhra Pradesh.
7p nguathienthan8 20-10-2020 11 2 Download
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Cowpea (Vigna unguiculata (L.)Walp.) is a poor men’s protein source. It is one of the most ancient human food sources and an important grain legume and hay crop in many tropical and subtropical regions. It is grown in Tamil Nadu and Andhra Pradesh widely as rainfed crop. Cowpea is affected by many diseases caused by viruses, bacteria and fungi. Among the fungal diseases, the charcoal rot caused by Macrophomina phaseolina (Tassi.) Goid causes significant loss in yield. M. phaseolinais a soil borne plant pathogen with a very wide host range.
12p chauchaungayxua6 26-06-2020 10 0 Download
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In the present study, all the three selected varieties of chilli viz. G-4, NP-46 and Faridabad were susceptible to dry root-rot caused by Rhizoctonia solani. The different modes of application of Trichoderma harzianum were found effective to manage the dry root rot but most effective was found with dry seed treatment.
8p chauchaungayxua6 26-06-2020 20 0 Download
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An experiment was conducted to study influence of physiological parameters like temperature, pH and light period on growth and sporuation of Macrophomina phaseolina, the incident of stem and root rot of sesame. It is found that, the pathogen grew best at neutral pH i.e. pH 6.5 (285.8 mg) followed by pH 7 (278.0 mg). The temperature of 350 C is best for mycelial growth of M. phaseolina followed by 300 C while no growth was found at lower temperatures. The growth of fungus reduces as the temperature increases or decreases.
6p quenchua6 15-06-2020 16 2 Download
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An intensive survey was conducted at flowering to ripening of capsule to record the incidence of charcoal rot in ten agroclimatic zones of Odisha during rabi 2014-15. Almost all the fields were infected by more than one disease. The major diseases of sesame recorded were Macrophomina stem and root rot, Cercospora leaf spot, Alternaria blight, powdery mildew, phytopthora blight and phyllody to some extent. Incidence of foliar diseases such as Alternaria blight, Powdery mildew, Cercospora leaf spot ranged from grade 2-4, 0-3 and 1-2 respectively with maximum incidence at Balianta.
4p angicungduoc5 14-06-2020 7 0 Download
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Four fungicides and two bioagents of different groups evaluated for seed treatmentagainst Rhizoctonia solani, Carbendazim + Mancozeb (88.54%), Carbendazim (71.49%), were proved to be most effective in inhibiting the growth of the fungus. Among the bio-agents screened, Trichoderma viride (50.23%) was most effective in restricting the growth of Rhizoctonia solani where as Metalaxy (65.91%) was proved least effective.
5p angicungduoc5 12-06-2020 10 0 Download
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In the present investigation effect of different inoculum densities of S. rolfsii on the development of stem rot of groundnut was assessed using soil infestation method in pot culture under green house and highest germination (45.83), root length (12.37 cm) and shoot length (15.16 cm) was observed at 1 per cent inoculum level.
8p cothumenhmong5 17-05-2020 11 1 Download
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Dry root rot (Fusarium solani) is the major fungal disease affecting both life span and production of sweet orange. The survey revealed incidence of dry root rot in the range of 5 to 50% and nearly 10 to 15% trees were killed every year. In Jalna district, average incidence of dry root rot was 20.49%.
7p trinhthamhodang5 16-05-2020 8 0 Download
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Brinjal is one of the important vegetable crop cultivated widely in India. It is susceptible to many diseases like sclerotium rot/wilt, verticillium wilt, fusarium wilt and bacterial wilt and it is being attacked by several diseases of fungi and bacteria. The collar rot/wilt disease caused by Sclerotium rolfsii is an important constraint in brinjal production. Hence, an in vivo study was conducted to evaluate the bio efficacy of antagonistic bioagents and fungicide chemicals against root rot/wilt disease of Brinjal at College of Agriculture, Bheemrayangudi during 2011–2012.
13p nguaconbaynhay5 11-05-2020 10 1 Download
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Bacteria producing biosurfactant molecules is beneficial to manage rhizome rot of turmeric caused by Pythium spp. A detailed study was conducted on biosurfactant producing bacteria for management of rhizome rot of turmeric. Initially, a survey was conducted to find out the incidence of the disease in turmeric growing of areas of Tamil Nadu, it was observed that rhizome rot in turmeric was also ranged from 9.16 to 71.55 and the maximum incidence was noticed in Ammampalayam (71.55%).
10p angicungduoc4 26-04-2020 7 1 Download
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Chickpea (Cicer arietinum L.) is one of the most important food legumes and India accounts for approximately 75% of world’s chickpea production. Despite the high total production, yields of chickpea are low due to many biotic and abiotic constraints. Among the biotic constraints more than 50 diseases have so far been reported on chickpea.
7p kethamoi4 18-04-2020 9 1 Download
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The present investigation was conducted to assess the wilt/root rot incidence in chilli (Capsicum annum) in Kashmir and to examine management practices. Survey was carried out in three districts of Kashmir viz., Ganderbal, Baramullah and Pulwama during 2016. Damping-off and wilt/root rot incidence in the districts varied from 7-34 and 11-52% respectively with maximum in disease incidence in district in Ganderbal and minimum in Pulwama. The pathogens responsible for wilt/root rot are Fusarium pallidoroseum, F. oxysporum, F. solani, Phytophthora capsici, R.
9p caygaocaolon4 01-04-2020 11 1 Download
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Turmeric is one of the important spice crops grown in India. Root-knot nematode (Meloidogyne spp.) is a major problem, which causes galls/knots in the rhizomes and causes considerable yield loses. It also makes the way for the secondary infection by different pathogens like Pythium, Fusarium and Ralstonia in the soil. Yield losses due to nematode infestation are reported in turmeric-growing areas. A roving survey was conducted for incidence of root-knot nematode in turmeric during kharif season in 2016 at Belagavi, Bagalkot, Chamarajanagar and Kalburgi districts of Karnataka.
10p trinhthamhodang4 22-03-2020 11 1 Download
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The present study was undertaken on integrated management of root rot of cotton caused by Rhizoctonia solani to know the disease incidence; survey was carried out during 2017 in 18 villages of different six cotton growing district viz., Udaipur, Hanumangarh, Sri Ganganagar, Chittorgarh, Banswara and Dungarpur.
10p chauchaungayxua4 22-03-2020 16 1 Download
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A roving survey was carried out during Kharif 2017 in different groundnut growing districts of Karnataka to ascertain the major soil borne diseases of groundnut viz., collar rot, stem rot and root rot disease incidences in Chikkaballapura, Tumkur, Chitradurga, Bellary, Raichur, Yadgiri, Koppal and Kalburgi districts of Karnataka. The average highest collar rot incidence was noticed in Kalaburgi (16.00 %), dry root rot incidence in Koppal (25.25%) followed by Tumkur (24.37%), stem rot incidence in Chitradurga (22.72%) followed by Tumkur (21.22%) districts of Karnataka.
7p cothumenhmong3 22-02-2020 11 1 Download
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The field experiment was conducted for the management of dry root rot disease is caused by Rhizoctonia bataticola in blackgram during 2015 and 2016 Kharif with biocontrol agents and fungicides. Among the different treatments evaluated, T8 treatment (seed treatment (ST) with carbendazim (2 g/kg of seeds) followed by one foliar spray (FS) with carbendazim 0.1%) was found superior in managing the disease by recording lowest disease incidence (8.38%) with highest seed yield (619 kg/ha). This treatment was followed by T6 treatment (ST with T.
6p cothumenhmong3 22-02-2020 14 1 Download