masslost: Genetically modified soybean litter decomposition
In lgrdata: Example Datasets for a Learning Guide to R

Description Usage Format Source

Soybean litter decomposition as a function of time (date), type of litter (variety), herbicides applied (herbicide), and where in the soil profile it is placed (profile). masslost refers to the proportion of the litter that was lost from the bag (decomposed) relative to the start of the experiment. Herbicide treatments were applied at the level of whole plots, with both treatments represented within each of four blocks. Both levels of variety and profile were each represented within each plot, with six replicates of each treatment added to each plot.

masslost

A data frame with 246 rows and 8 variables:

plot: integer A total of eight plots.
block: integer A total of four blocks.
variety: integer Soybean variety is genetically modified ('gm') or not ('nongm'); manipulated at the subplot level.
herbicide: integer Herbicide applied is glyphosate ('gly') or conventional program ('conv'); manipulated at plot level.
profile: integer Whether litter was 'buried' in the soil or placed at the soil 'surface'; manipulated at the subplot level.
date: integer Date at which litter bags were recovered.
sample: integer Factor representing timing of sampling ('incrop1', 'incrop2', 'postharvest').
masslost: double The proportion of the initial mass that was lost from each litter bag during field incubation. Some values are lower than zero due to insufficient washing of dirt and biota from litter prior to weighing.