Description Usage Arguments Value Examples

View source: R/seedweight.model.r

The SeedWeight model is a logistic model of grain weight over time in wheat. The model was proposed by Darroch & Baker (1990) in a study of grain filling in three spring wheat genotypes. This model has a single input variable, degree days after anthesis noted DD, and three parameters, noted W, B and C. Parameters are estimated from observations.

1 | ```
seedweight.model(DD, W, B, C)
``` |

`DD` |
: degree days after anthesis |

`W` |
: parameter of the model |

`B` |
: parameter of the model |

`C` |
: parameter of the model |

Seed Weight for each TT

1 2 | ```
plot(1:500,seedweight.model(1:500, W=30,B=4,C=0.020),type="l",
xlab="degree days after anthesis", ylab="grain weight")
``` |

ZeBook documentation built on March 18, 2018, 2:30 p.m.

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