Survival ofBacillus subtilisAF 1 in the bacterized peanut rhizosphere and its influence on native microflora and seedling growth
✍ Scribed by A. R. Podile
- Publisher
- Springer
- Year
- 1994
- Tongue
- English
- Weight
- 357 KB
- Volume
- 10
- Category
- Article
- ISSN
- 1573-0972
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✦ Synopsis
A mutant of Bacillus subtilis AF 1 (an antifungal strain with plant growth-promoting activity, resistant to 100 μg streptomycin/ml) was isolated from pigeon pea rhizosphere and, when used in peanut bacterization, decreased fungal and bacterial numbers and increased the actinomycete population in the rhizosphere. Over 28 days, AF 1 declined by 0.9 log c.f.u. in sterilized soil and by 2.6 log c.f.u. in native soil. From the seedlings raised with peanut seeds bacterized with AF 1 at 6.5 log c.f.u./seed, 4.1 and 4.7 log c.f.u. of AF 1 were recovered from the rhizosphere and total underground parts, respectively. Bacterization with AF 1 had no significant growth-promoting or -inhibiting effect on the peanut.