Colonization potential of arbuscular mycorrhizal fungi in soil cultivated with papaya under different production management
DOI:
https://doi.org/10.33885/sf.2010.3.1061Keywords:
infectivity, mycorrhizal colonization, propagulesAbstract
An experiment was conducted in Isla town, at the southern region of the State of
Veracruz, Mexico. The arbuscular mycorrhizal fungi potential was evaluated using soil of
three papaya plantations (Maradol type), with different agricultural management systems
classified as: high technology (AT), median technology (MT) and low technology (BT), and a
control plot (PT) with Cynodon dactylon L (Fam. Poacea) grass. Two soil samples were
collected, one in autumn and the other in winter. Corn seeds were sown in pots, with five
0 -4 different dilutions (10 to 10 ) of sterilized soil and sand. The mycorrhizal colonization and
the infective potential were evaluated after six weeks with the most probable number (MPN)
method. There were not significative differences at the interaction level of technology and
sampling season. The highest mycorrhizal colonization percentage in the field was registered
in PT, which showed a larger infective potential on both seasons of sampling, with a higher
number of propagules/g soil for autumn (1122.5 ± 433.1-2842) and winter (431.3 ±170.3-
1092.22). The AT plot showed a low (colonization potential 10.9 ±4.3-27.6).The results
showed that the soil use and management influence the number of infective propagules
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