Effect of an arbuscular mycorrhizal fungus, Glomus mosseae, and a rock-phosphate-solubilizing fungus, Penicillium thomii, on Mentha piperita growth in a soilless medium.
Rock phosphate effect on English mint (Mentha piperita L.) grown on steamed perlite:vermiculite (1:1, v:v) substrate, with and without rock phosphate, was evaluated in greenhouse experiments. Five treatments were carried out by inoculation with an arbuscular mycorrhizal fungus Glomus mosseae and a phosphorus solubilizing microorganism Penicillium thomii. Plant aerial biomass, phosphorus concentration in plant tissue, and P available in the substrate, were evaluated upon two harvests. After the first harvest, plant aerial biomass did not show significant differences between treatments using rock phosphate as fertilizer, although P content in plants inoculated with P. thomii was higher. The second harvest revealed a higher biomass and plant tissue P content in treatments inoculated with G. mosseae. P. thomii increased P available in the substrate, whereas in the absence of G. mosseae, it did not enhance plant tissue P content. Mycorrhizal colonization was not affected by P. thomii. Microbial inoculation effect on English mint growth was also evaluated. The microbial effect was positive in all treatments when compared with the control without rock phosphate.
Cabello
Marta
M
Instituto Spegazzini, Facultad de Ciencias Naturales y Museo U. N. L. P. Ave. 53 No 477, B1900AVJ, La Plata, Argentina. mcabello@netverk.com.ar
Irrazabal
Gabriela
G
Bucsinszky
Ana Maria
AM
Saparrat
Mario
M
Schalamuk
Santiago
S
D000537:Aluminum Oxide / Q000737:chemistry; D018533:Biomass; D005658:Fungi / Q000254:growth & development* / Q000378:metabolism; D036142:Mentha piperita / Q000254:growth & development* / Q000382:microbiology*; D038821:Mycorrhizae / Q000254:growth & development* / Q000378:metabolism; D010407:Penicillium / Q000254:growth & development* / Q000378:metabolism; D010758:Phosphorus / Q000378:metabolism*; D012822:Silicon Dioxide / Q000737:chemistry
C003076:Perlite; D010758:Phosphorus; D012822:Silicon Dioxide; D000537:Aluminum Oxide