Control of Colletotrichum truncatum causing anthracnose/pod blight of soybean by aqueous leaf extracts, biocontrol agent
Journal Title: Agricultural Advances - Year 2012, Vol 1, Issue 2
Abstract
A study was conducted in the of Department Plant Pathology, Marathwada Agricultural University, Parbhani, Maharashtra during 2009 to 2010 to control Colltotrichum truncatum causing anthracnose / pod blight of soybean with plant extracts and bio-agents. All the nine aqueous leaf extracts and four species of antagonist Trichoderma evaluated in vitro were found effective against C. truncatum and recorded significant inhibition of the test pathogen over untreated control. However, T. viride was found most effective and recorded 18.53 mm mean colony diameter and recorded significantly highest growth inhibition (79.40 %) of the test pathogen. This was followed by T. hamatum and Pseudomonas fluorescens with 73.74 and 69.31 per cent growth inhibition, respectively. Of the aqueous leaf extracts evaluated, Garlic recorded significantly highest growth inhibition (81.82%) of the test pathogen. The second and third best plant extracts found were Tulsi (65.17 % inhibition) and Onion (60.31% inhibition) both of which were on par. Among the nine fungicides, Carbendazim recorded least mean colony diameter (7.52 mm) and highest inhibition (91.63 %) of mycelial growth of the test pathogen over untreated control, followed by Mancozeb which recorded mean colony diameter of 10.38 mm and mean mycelial growth inhibition of 88.45 per cent. In field, Carbandazim (@ 0.1%) recorded least mean disease intensity (19.55%), mean pod infection (9.63%), highest seed yield (2605 kg/ha) and test weight (14.33 g). It also recorded highest reductions in the disease intensity (40.73%), pod infection (75.73%) over unsprayed control followed by Mancozeb (@ 0.1%) which recorded the minimum mean disease intensity (21.50%) pod infection (10.78%). Considering incremental cost: benefit ratio (ICBR), the most economical treatment which recorded highest cost: benefit ratio was the fungicide Carbendazim (C:B ratio, 1:14.45) followed by Carbendazium + Mancozeb (C:B ratio, 1:8.92).
Authors and Affiliations
G. P. Jagtap*| Department of Plant Pathology, Marathwada Agricultural University, Parbhani- 431 402 Maharashtra, D. S. Gavate| Department of Plant Pathology, Marathwada Agricultural University, Parbhani- 431 402 Maharashtra, U. Dey| Department of Plant Pathology, Marathwada Agricultural University, Parbhani- 431 402 Maharashtra
Keywords
Related Articles
- EP ID EP482
- DOI -
- Views 560
- Downloads 43
Effects of trickle irrigation system from southern Iran district Chabahar free zone
This research was carried out on steep slope area planted with trees in different elevation terraces. The experiments were conducted at the experimental site at the Chabahar Free Zone. One major disadvantage of trickle...
Survey, surveillance and cultural characteristics of Alternaria leaf blight of cotton
The roving survey undertaken in four districts viz., Parbhani, Nanded, Osmanabad, and Beed of Marathwada region revealed that average Alternaria blight incidence was ranged from 14.60 to 30.03 per cent. Bt. Cotton crop...
Yield characteristics of goat’s meat in the semi-arid zone of north-western Nigeria
A study was conducted to characterize autochthonous goats of the semi-arid zone of North-western Nigeria for their meat potential. Thirty two intact male goats representing eight replicates of two breeds (Sokoto Red an...
The effects of protexin probiotic and chicoridin supplementation on performance and some hematological parameters in Jap
This experiment was conducted to evaluate the effects of feedingprotexin and chicoridin tableon performance and some hematological parameters of Japanese quail.A total of 240 seven days old quail chicks with an average...
Effect of nitrogen source and water management on rice yield and nitrogen use efficiency
We conducted two experiments usingprilled urea and urea super granule to examine the effects of nitrogen sourceand water stress on rice yield and nitrogen use efficiency. The experimentaltreatments were 0, 25, 50, 75 a...