Is both soil testing and plant tissue analysis necessary?
Yes, if crop production is to be maximized and a cost effective fertilizer program ensured. Consistent, accurate soil testing is a primary requirement in establishing an effective fertility program. You have to consider, however, that even though there are sufficient levels of minerals in the soil, one or more minerals may not be taken up in adequate amounts by the crop. Even one nutrient taken up in excess or in insufficient amounts can limit or prevent the full use of another mineral. Plant analysis provides a full picture of the nutritional status of a crop, allowing you to fine tune the fertility program. Also, samples can be taken over a somewhat longer period of time and earlier in the crop growing season, allowing corrective treatments in the same growing season. Comparing the relative nutrients within a plant allows the ranking of nutrients in order of limiting importance to crop yield. Consequently, unneeded fertilizer applications are avoided. When the nutrient that is most l
