Taxa sobrevivência mudas
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The seedling survival rate calculator measures the percentage of seedlings that remain alive after a planting period in ecological restoration projects. The calculation is simple: divide the number of live seedlings by the total planted and multiply by 100. For example, if 80 out of 100 seedlings survive, the rate is 80%. This tool is essential for assessing the success of reforestation efforts and identifying failures.
The operation requires only two inputs from the user: the total seedlings planted and the number of live seedlings after a given period (e.g., 6 months, 1 year). The result is displayed as a percentage, making it easy to compare different areas or techniques. It applies to any species as long as monitoring is consistent. The calculator does not replace field visits but speeds up result analysis.
When to use: in forest restoration projects, urban greening, forestry agriculture, or gardens. Monitoring should occur at defined intervals (30, 90, 180 days) to capture early and late mortality. Care includes including replanted seedlings in the initial total, avoiding counting seedlings without exposed roots, and recording losses due to drought, pests, or trampling. Rates below 60% usually indicate a need for management review.
Frequently asked questions
How to calculate the seedling survival rate manually?
Divide the number of live seedlings by the total planted and multiply by 100. Example: 45 live out of 60 planted = (45/60)x100 = 75%.
What is an ideal seedling survival rate for restoration?
There is no fixed value, but rates above 80% are considered good. Below 60% indicates problems that need to be addressed.
When should I count the live seedlings after planting?
It is recommended at 30, 90, and 180 days to capture early and late mortality. The ideal period depends on the species and local conditions.
Should I include replanted seedlings in the calculation?
Yes, if replanting was done within the same evaluation, the total planted should include replanted ones, but record them separately.
What to do if the survival rate is very low?
Analyze causes such as inadequate irrigation, pests, poor soil, or climate. Techniques like localized irrigation, fertilization, and fencing can improve results.