Leucaena leucocephala seedling response to vesicular-arbuscular mycorrhizal inoculation in soils with varying levels of inherent mycorrhizal effectiveness

1989 ◽  
Vol 8 (2) ◽  
Author(s):  
M. Habte ◽  
R.L. Fox
Keyword(s):  
Leucaena Leucocephala ◽  
Arbuscular Mycorrhizal ◽  
Mycorrhizal Effectiveness ◽  
Vesicular Arbuscular ◽  
Mycorrhizal Inoculation

Determining vesicular–arbuscular mycorrhizal effectiveness by monitoring P status of leaf disks

1987 ◽  
Vol 33 (12) ◽  
pp. 1097-1101 ◽  
Author(s):  
Taufiqul Aziz ◽  
Mitiku Habte
Keyword(s):  
Soil Solution ◽  
Arbuscular Mycorrhizal ◽  
Glomus Aggregatum ◽  
Symbiotic Interaction ◽  
Mycorrhizal Effectiveness ◽  
Vesicular Arbuscular ◽  
Before And After ◽  
Mycorrhizal Inoculation ◽  
Soil Solution P ◽  
Leaf Disks

A greenhouse experiment was conducted to monitor the development of symbiotic interaction between the vesicular–arbuscular mycorrhizal (VAM) fungus Glomus aggregatum and Vigna unguiculata grown in a typical Oxisol before and after the soil was subjected to simulated erosion and at various levels of phosphorus in the soil solution. VAM development monitored in terms of P status of cowpea leaf disks revealed that VAM activity was not detected in the eroded soil unless the soil was amended with P. When P was not limiting, VAM activity (effectiveness) was detected as early as 17 days from planting, the activity peaking 5–10 days thereafter. Peak VAM activity was observed at a soil solution P level of 0.026 μg/mL and the peak values were similar in the eroded and uneroded soil samples. Maximum mycorrhizal inoculation effect was also observed at this level of soil solution P. Our results illustrate the usefulness of the leaf-disk technique for monitoring the development of the VAM symbiosis and the significance of soil solution P in regulating host response to VAM inoculation.

scholarly journals The effect of vesicular-arbuscular mycorrhizal inoculation on the growth and root colonization of ten strawberry cultivars

1992 ◽  
Vol 1 (5) ◽  
pp. 527-535 ◽  
Author(s):  
Mauritz Vestberg
Keyword(s):  
Root Colonization ◽  
Arbuscular Mycorrhizal ◽  
Dry Weight ◽  
Mycorrhizal Dependency ◽  
Vam Fungi ◽  
Shoot Dry Weight ◽  
Vesicular Arbuscular ◽  
Mycorrhizal Inoculation ◽  
Dependency Index ◽  
Strawberry Cultivars

Ten strawberry cultivars, four early maturing, three late maturing and three “special” cultivars, were inoculated with six strains of vesicular-arbuscular mycorrhizal (VAM) fungi in a pot experiment. Growth effects and colonization of the VAM fungi were studied. Three strains, Glomus macrocarpum V3, G. mosseae Rothamsted and G. sp. V4, were highly efficient, causing significant growth increases in most cultivars. ’Jonsok’ showed the highest mycorrhizal dependency index, 648, and ’Ostara’ the lowest, 269, for the mean response of all six fungi. The fungal strains which increased shoot growth the most also increased the runner plant formation the most. Early cultivars showed higher colonization percentages than late maturing cultivars. Sporulation of the introduced VAM fungi was on average more abundant in early and special cultivars than in late cultivars. Root colonization and strawberry shoot dry weight correlated significantly in most cultivars, but the correlation between colonization and runner formation was generally poor.

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