| Sunflower_Phomopsis {ZeBook} | R Documentation |
Phomopsis stem canker observations for Sunflower
Description
This dataset contains fraction intercepted photosynthetically active radiation (IPAR) and corresponding percent of girdling lesions at harvest (pclesions) for 43 fields. Phomopsis stem canker is a worldwide fungal disease of sunflower, which causes stem girdling lesions and a consequent reduction in yield. One wants to decide if the number of girdling lesions at harvest in the absence of early treatment will exceed 15 This data frame consist of a sample of fields with values for IPAR (ipar) and for the percent of girdling lesions at harvest (pclesions).
Usage
Sunflower_Phomopsis
Format
a RangedData instance, 1 row per observation.
Source
Debaeke, P., & Estragnat, A. (2009). Crop canopy indicators for the early prediction of Phomopsis stem canker (Diaporthe helianthi) in sunflower. Crop Protection, 28(9), 792-801. doi:10.1016/j.cropro.2009.04.011