Author:
S AMEER BASHA ,G RAGHAVENDRA ,A V RAMANJANEYULU ,A SRINIVAS
Abstract
In the present study the compatibility of various plant growth promoting organisms [Pseudomonas fluorescens(Pf), Trichoderma viride (Tv) and Rhizobium (Rhi)] along with fungicides (mancozeb, tebuconazole andcarbendazim + mancozeb) was tested on groundnut crop (cv. K-6) variety under greenhouse conditions. At 45 days after sowing (DAS), maximum (109) number of root nodules was observed in plants treated with combination of biocontrol agents Pf, Tv and Rhi. Maximum (1314.7 mm) root length was observed in Pf and Rhi combination while root area was recorded to be maximum (1341.8 mm2) in Rhi treatment. Root diameter (3.7 mm), root hairs (79.5) and chlorophyll content (51.7) were significant in Pf and Rhi combination. At 90 DAS, boosting effect on root nodules with maximum number (111) was seen in seeds treated with combination of biocontrol agents Pf, Tv and Rhi. Root length was prominent (1775.5 mm) in Tv treated plants whereas root area was maximum (1865.6 mm2) in Pf and Rhi combination. Maximum root diameter (4.8 mm) was found in Pf and Rhi combination whereas Pf, Tv and Rhi combination showed significant (108.5) root hair number. Pf treated plants showed remarkable (60.3) chlorophyll content compared to other treatments. The study showed increase in overall growth parameters in biocontrol agents treated plants followed by fungicides.
Publisher
Indian Society of Oilseeds Research
Reference28 articles.
1. Akgul D K, Ozgonen H and Ali Erkilic 2011. The effect of seed treatment with fungicides on stem rot caused by Sclerotium rolfsii in peanut. Pakisthan Journal of Botany, 43(6): 2991-2996.
2. Ameer B S, Sarma B K, Singh D P, Annapurna K and Singh U P 2006. Differential methods of inoculation with PGPR induce synthesis of phenylalanine ammonia lyase and phenolic compounds differentially in chickpea (Cicer arietinum). Folia Microbiology, 51(5): 463-468.
3. Chet I, Inbar J and Hadar I 1997. Fungal antagonists and mycoparasites. In: Wicklow D T and SoderströmB (Eds.), The
4. Mycota IV: Environmental and Microbial Relationships, Springer-Verlag, Berlin, pp. 165-184.
5. Ezzahiri B and Khattabi 2004. Sclerotiumin the Doukkala, Marocco Region: Present Situation and Control Techniques.