⇦ Back to Soil Fertility and Plant Nutrition Home
( NOTE: See individual Crop Files for detailed sampling instructions and analysis interpretations.)
Crop | Growth Stage to Sample | Plant Part to Sample* | Number to Sample |
Blackberry (Rubus species, Crop File 1.03.174) | |||
Post-harvest primocane | MRM leaf blade w/o petiole | 30 - 60 | |
Cranberry (Vaccinium macrocarpon, Crop File 1.03.247) | |||
A. June (late spring) | Upright tips: new growth,w/ leaves | 60 - 80 | |
B. Mid-August to mid-September (stable growth) | |||
Grapes (Vitus rotundifolia, "Muscadine", Crop File 1.03.370) | |||
Full bloom | Petiole from MRM leaf | 50 - 80 | |
Grapes (Vitus vinifer, Crop File 1.03.372) | |||
A. Full bloom | Petiole from MRM leaf | 50 - 80 | |
B. Early ripening (veraison) | Petiole from MRM leaf | 50 - 80 | |
C. Full bloom | MRM leaf w/ petiole | 15 - 25 | |
D. Early ripening (veraison) | MRM leaf w/ petiole | 15 - 25 | |
Blackberry (Rubus species, Crop File 1.03.790) | |||
Post-harvest primocane | MRM leaf blade w/o petiole | 30 - 60 |