Record ID No. |
3148 |
Author(s) |
Suri V K., Choudhary A K. , 2010. |
Affiliation |
Department of Soil Science, CSK Himachal Pradesh Agricultural University, Palampur, Himachal Pradesh, India. Email: surivk13jan©gmail.com |
Title |
Comparative performance of VA-mycorrhizal (VAM) fungi and applied phosphorus in wheat under controlled environment in a phosphorus deficient acid alfisol |
Source. Vol.(no):Page |
Progressive Agriculture. 10(1): 23-28p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Soil plant relations |
Sub-subjects |
Fungal evaluation |
Host |
Triticum aestivum(Wheat) |
Organism |
Glomus intraradices, G. mosseae |
Country |
India, Asia. |
Abstracts |
In order to study the comparative performance of three VAM cultures on wheat at varying phosphorus (P) levels, a glasshouse pot culture experiment was conducted in a P deficient acid alfisol. Inoculation of 3 VAM cultures viz. Local culture (Glomus mosseae), VAM culture (Glomus intraradices) from Centre for Mycorrhizal Research, The Energy Research Institute (TERI), New Delhi and a culture (Glomus mosseae) from Indian Agricultural Research Institute (IARI), New Delhi in wheat under controlled environment improved the root colonization by 20-32% alone or in combination with applied P based on soil test crop response (STCR) precision model. Inoculation with either of 3 VAM cultures with increasing P levels from 50 to 75% of recommended P2O5 dose resulted in consistent and significant improvement in grain protein content, grain and straw yield, and nutrient uptake in wheat though root colonization did not show improvement at higher P2O5 dose beyond 50% of applied P. Significant improvement in available N and P status in soil was also observed with VAM inoculation with applied P levels upto 75% P2O5, though highest P build up was obtained with sole application of 100% P2O5 dose. TERI VAM culture (Glomus intraradices) showed its superiority over other two VAM cultures in terms of productivity and nutrient uptake in wheat though differences were non-significant amongst the VAM cultures alone or at each P level. Overall, it was inferred that use of VAM fungi is beneficial under low soil or applied P conditions. Combined application of VAM with 75% P2O5 dose based on STCR concept can also save fertilizer phosphorus to the tune of about 25% without compromising crop productivity and soil fertility status in acid alfisol. |