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Measurement Protocol - Measurement quantity and frequency

How many stems and how often to measure?

Updated this week

Tomato

Generative

Harvest Forecast & Cultivation Management

  • Frequency: Twice a week

  • Locations: 8

  • Stems / location: 5

  • Total: 40 stems

For cultivations less than 1ha: better to reduce number of plants than number of zones

  • Frequency: Twice a week

  • Locations: 8

  • Stems / location: 3

  • Total: 24 stems

Workspace

  • Frequency: Once a week

  • Locations: 4

  • Stems / location: 5

  • Total: 20 stems

Vegetative

Vegetative measurements protocol are the same across the different products.

For good representative data we want ideally 20 plants measured once a week. 15 plants is acceptable but best not to go below that. But: growers can consciously choose fewer or more, depending on how much time they want to invest vs. how much precision/confidence they want.

We advise to take vegetative measurements on different plants than the generative measurements.

Harvest and fruit weight registration

  • Weekly fruit_weight_g , sampled from at least 5 crates with at least 5 trusses per crate

  • Daily net harvest_kg_m2 and waste_kg measurements which can be filled in via Source Harvest.

Pepper

Generative

Harvest Forecast

  • Frequency: Twice a week, preferably Monday and Thursday. Otherwise Tuesday and Friday.

  • Locations: 8 paths

  • Stems per path: preferably 10, though at least 5.

For cultivations less than 1ha: better to reduce number of plants than number of zones

  • Frequency: Twice a week

  • Locations: 8 paths

  • Stems / location: 5

Workspace and Cultivation Management

  • Frequency: Once a week

  • Locations: 8 paths

  • Stems per path: 5

Vegetative

For good representative data we want ideally 20 plants measured once a week. 15 plants is acceptable but best not to go below that. But: growers can consciously choose fewer or more, depending on how much time they want to invest vs. how much precision/confidence they want.

We advise to take vegetative measurements on different plants than the generative measurements

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