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I don’t know

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No clue

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Amount of days where maximum temperature hits a specific optimum that triggers a phenological stage

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it's time that takes into account the temperature too

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Temperature unit drives development

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Heat sum

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Plant physiological time

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Accumulation of hours at optimal temperatures that estimulate growth and development

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The concept we use to quantitatively describe the development of plants

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Time for development at a certain Temperature

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Amount of days calculated as max t minus min t and added average t

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A meaningfull metric of physiological age of a species

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quantium

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The most fascinating concept in plant science

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Days calculated using temperature

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Accumulated time above a threshold to reach a certain stage - or simply the accumulated temp.

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Sum of temperature days needed for crop cycle completion

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Sum of temperature for plant development.

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Nog iets

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Simulate crop development

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Go home early on a hot day

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I avoid using it

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In a model to simulate plant development

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In a practical to calculate when to fertilize

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Estimate the flowering time.

Also put it in publication about growth time

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Estimate crop developmental stages

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Model assimilate partitioning in a crop growth model

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Development

Early growth

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As a regressor for yields forecasting

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Correct biomass accumulation for different treatments that are not related to temperature

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Test feasibility of crooping calendars: double/tripple cropping possible. Also i.r.t climate change

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it doesn't take into account other factors such as radiation or nitrogen

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Is explaining only one of the factors (influencing growth and development) and usually you cannot control it

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Setting standard definitions for the determination of what T you take

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Extreme conditions may invalid it.

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The determination of tb, tc,to

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No limitations to the concept. Just limitations in how we sometimes calculate it

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Less useful for perennial plants (?)

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People unaware of photoperiod sensitivity

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Temperature experienced by plant not always same as air temperature