Task: Class Definition Understanding (ontology: Food_Agriculture/Crop_Ontology)

Which of the following definitions best describes 'Seeding date observation'?

A. Record the date of effective seeding
B. Predict cell wall carbohydrate composition using partial least squares (PLS) modeling of Fourier Transform Infrared (FTIR) spectra.
C. Predict ash content using partial least squares (PLS) modeling of Fourier Transform Infrared (FTIR) spectra.
D. Scan roots from soil depths of 0-45 cm using CI-600 scanner system associated with the WinRhizo software and calculate root surface area based on image analysis. WinRHIZO uses a non-statistical method for measuring root morphology. It calculates total root length from a one pixel thinned image by multiplying the number of pixels by pixel size, and calculates average diameter by dividing the projected area of the imaged object by the total length. Surface area is calculated from root diameter and length assuming the root has a round cross-section.

Answer: Record the date of effective seeding