CMY01 Mycorrhizal Colonization and Plant Community Responses to Long-term Suppression of Mycorrhizal Fungi

Summary

Short name: 

CMY01

Abstract: 

Twenty replicate permanent 2x2 m plots were established in early 1991 along a randomly located transect, with a 2m space between each plot, on the following watersheds: 1B, 1D, annually burned HQB, 10B, 20D and infrequently burned HQB. Ten of the plots were randomly assigned as long-term mycorrhizal suppression plots. In each of these plots, AM fungi were suppressed by the application of the fungicide benomyl as a soil drench (7.5 liters per plot) at the rate of 1.25 g/m2 (active ingredient). The mycorrhizal suppression plots were treated biweekly throughout each growing season (April through October) beginning in 1991. The control plots each received no fungicide, but an equivalent volume of water (7.5 liters) was applied biweekly. To evaluate the effectiveness of the fungicide, three soil cores (2.5 cm diameter x 14 cm deep) were removed from both fungicide-treated and control plots each October throughout the study. Roots were extracted from the soil, washed free of soil, stained in trypan blue (Phillips and Hayman, 1970), and examined microscopically to assess percentage root colonization by mycorrhizal fungi using a Petri dish scored in 1-cm squares (Daniels et al. 1981).

DOI: 

10.6073/pasta/7463a2d016ac4ad0a37f14221237a334

Data set ID: 

33

Data sources: 

Variables: 

rowid
  • Label:
  • Definition: rowid in file (internal book keeping)
  • Type: Nominal
  • Missing values: None specified
DataCode
  • Label:
  • Definition: Dataset code
  • Type: Nominal
  • Missing values: None specified
RecType
  • Label:
  • Definition: Record type
  • Type: Nominal
  • Missing values: None specified
RecYear
  • Label:
  • Definition: Year of record
  • Type: Date/time
  • Date format: YYYY
  • Missing values: None specified
RecMonth
  • Label:
  • Definition: Month of record
  • Type: Date/time
  • Date format: MM
  • Missing values: None specified
RecDay
  • Label:
  • Definition: Day of record
  • Type: Date/time
  • Date format: DD
  • Missing values: None specified
Transect
  • Label:
  • Definition: transect code
  • Type: Code list
  • Codes:
    • a = HQB
    • b = HQB
    • c = 1B
    • d = 10B
    • e = 1D
    • f = 20D
  • Missing values: None specified
Burn
  • Label:
  • Definition: burn frequency
  • Type: Code list
  • Codes:
    • b = annual
    • u = infrequent
  • Missing values: None specified
Plot
  • Label:
  • Definition: Plot number
  • Type: Nominal
  • Missing values: None specified
Fungicide
  • Label:
  • Definition: fungicide usage
  • Type: Code list
  • Codes:
    • ben = fungicide
    • myc = control
  • Missing values: None specified
Species
  • Label:
  • Definition: species abbreviation code
  • Type: Nominal
  • Missing values: None specified
Form
  • Label:
  • Definition: growth form
  • Type: Nominal
  • Missing values: None specified
Sample
  • Label:
  • Definition: repeated measure 1-4
  • Type: Nominal
  • Missing values: None specified
Vegetative
  • Label:
  • Definition: number of vegetative pin contacts
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 1
  • Missing values: None specified
Reproductive
  • Label:
  • Definition: number of reproductive pin contacts
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 1
  • Missing values: None specified

Categories
Dates

Date Range: 

Monday, April 1, 1991 to Tuesday, October 31, 1995

Publication Date: 

Monday, June 15, 2015
People

Owner/Creator: 

Contact: 

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