Record ID No. |
1219 |
Author(s) |
Backiyavathy,M.R., Arulmozhiselvan,K., Rani-Perumal , 2005 |
Affiliation |
Department of Soil Science and Agrl. Chemistry, Tamil Nadu Agricultural University, Coimbatore - 641 003, India. |
Title |
Effect of nitrogenous fertilizers, rhizobium and arbuscular mycorrhizal fungi on nodulation and biomass yield in Acacia nilotica (L.) Del and Acacia planifrons (L.) under degraded wasteland |
Source. Vol.(no):Page |
Advances-in-Plant-Sciences. 18(1): 91-97p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Biological Interaction |
Sub-subjects |
Nodule forming nitrogen fixers |
Host |
Acacia nilotica, A. planifrons |
Organism |
Rhizobium |
Country |
India, Asia |
Abstracts |
Greenhouse experiments were carried out to investigate the effect of nitrogenous fertilizers with biofertilizers (Rhizobium and vesicular arbuscular mycorrhiza, VAM) on seedling growth, nodulation and enzyme (nitrogenase and phosphoric monoester hydrolase) activities of two Acacia species (A. nilotica and A. planifrons) in sandy clay loam soils (Typic Halustalf) of degraded/waste lands of Coimbatore, Tamil Nadu, India. The results scanned through biometric observations, viz., biomass yield and enzyme activities revealed that there was a notable improvement in nodulation, seedling growth and enzyme activities with increase in levels of nitrogen and its effect was more prominent with the application of 6.75 kg N/100 000 seedlings (75% of the recommended dose 9 kg/100 000 seedlings) in combination with biofertilizers followed by 4.5 kg 100 000 seedlings (50% of the recommended dose of N) with bio-inoculants. The enzyme activities were more activated by the combined incorporation of mineral N with microsymbionts. The nitrogenase activity increased by 34.6 and 22.3% over control in A. nilotica and A. planifrons, respectively. There was an improvement in phosphatase activity by 11.3 and 10.4% over control treatment in A. nilotica and A. planifrons, respectively. The maximum mean biomass yield was 9.18 g/seedling in A. nilotica and 9.26 g/seedling in A. planifrons. The increase in nodulation was 22.9 and 23.0% over the control due to the inorganic and biofertilizer treatments. Increasing levels of N up to 9 kg N/100 000 seedlings decrease the nodulation, biomass yield and enzyme activities. It was concluded that the combination of 6.75 kg N/100 000 seedlings along with Rhizobium and VAM inoculation had a pronounced effect on seedling growth, nodulation and enzyme activities. |