Use Germination Capacity % when you need to compute germination capacity as the total seeds germinated over the whole assay divided by the seeds sown times one hundred. Enter Seeds sown and Total germinated using the definitions and units below so the result can be reproduced.

Seeds sown

Number of seeds sown; must be at least one.

Total germinated

Total seeds germinated by the end of the assay; must not exceed seeds sown.

The published tool contract uses this rule: Compute germination capacity as the total seeds germinated over the whole assay divided by the seeds sown times one hundred.^[1]

Germination capacity

Germination capacity percentage between 0 and 100.

A ratio or percentage can conceal the scale of its numerator and denominator and becomes sensitive to measurement error when the denominator is small.

Retain the original Seeds sown and Total germinated values and their units alongside the result. Germination Energy % is useful when you instead need to compute germination energy as the seeds germinated by the peak day divided by the seeds sown times one hundred; the peak day is the day on which the daily germination count is highest and only counts up to that day are included. Germination Percentage provides another view by helping you compute germination percentage as germinated seeds divided by seeds sown times one hundred.

• Germination Energy %

  Compute germination energy as the seeds germinated by the peak day divided by the seeds sown times one hundred; the peak day is the day on which the daily germination count is highest and only counts up to that day are included.

• Germination Percentage

  Compute germination percentage as germinated seeds divided by seeds sown times one hundred.

• Germination Rate Index

  Compute the germination rate index over two days as (day one count / 1 + day two count / 2) / seeds sown times 100, expressed in percent per day.