carrot.weevil.model: Carrot weevil development model
In ZeBook: Working with Dynamic Models for Agriculture and Environment

Model description. Simple model of developpement of carrot weevil.

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carrot.weevil.model(tbase = 7, tteggs = 130, ttlarvae = 256,
  ttprepupae = 114, ttpupae = 130, ttadultpreovi = 91, weather,
  sdate = 1, ldate = 360)

`tbase`	: base temperature
`tteggs`	: duration of eggs stage in degre.day
`ttlarvae`	: duration of larvae stage in degre.day
`ttprepupae`	: duration of prepupae stage in degre.day
`ttpupae`	: duration of pupae stage in degre.day
`ttadultpreovi`	: duration of adult stage until egg laying in degre.day
`weather`	: weather data.frame for one single year
`sdate`	: date to begin simulation (day of year) (default 1)
`ldate`	: date to end simulation (day of year) (default 360)