From: How does tillage intensity affect soil organic carbon? A systematic review
Missing information | No. of studies | % of evidence | Description |
---|---|---|---|
Soil description | 37 | 11 | Studies lacking any description of soil type |
Study duration | 1 | 0.3 | Study lacks any description of how long the experiments lasted |
Study timing | 20 | 6 | Studies lacking information on when the experiments started and ended |
Study design | 29 | 8 | Studies lacking information about the experimental design (i.e. randomisation, blocking, split-plot, strip-plot, latin square, paired design, purposive) |
Spatial replication | 18 | 5 | Studies lacking details of how many true spatial replicates were sampled |
Temporal replication | 3 | 0.9 | Studies lacking information of how many samples were taken over time |
Soil sampling depth | 1 | 0.3 | Studies lacking information on how many soil samples were taken and at what depth |
Tillage description | 108 | 31 | Studies lacking information on the type and intensity of tillage treatments |
Measure of variability | 196 | 56 | Studies failing to report a measure of variability around treatment means |