Use Seedling Length Vigor when you need to compute the seedling length vigor as the shoot length plus the root length in centimeters. Enter Shoot length and Root length using the definitions and units below so the result can be reproduced.

Shoot length

Shoot length in centimeters; must not be negative.

Root length

Root length in centimeters; must not be negative.

The published tool contract uses this rule: Compute the seedling length vigor as the shoot length plus the root length in centimeters.

Seedling total length

Total seedling length (shoot plus root) in centimeters.

The calculation does not propagate measurement uncertainty, sampling error, or biological and chemical variability.

Retain the original Shoot length and Root length values and their units alongside the result. Seedling Vigor Index is useful when you instead need to compute the documented seedling vigor index as germination percent times seedling length in centimeters. Vigorous Seedling Index provides another view by helping you compute the vigorous seedling index as seedling dry mass in milligrams times the germination percentage divided by one hundred.

• Seedling Vigor Index

  Compute the documented seedling vigor index as germination percent times seedling length in centimeters.

• Vigorous Seedling Index

  Compute the vigorous seedling index as seedling dry mass in milligrams times the germination percentage divided by one hundred.

• Seed Vigor Index

  Compute the seed vigor index as germination percent times seedling length in centimeters divided by one hundred.