Keystone Bio Ag: Levi Smucker

"Sap Analysis takes the guess work out of fertilizing crops. Instead of applying all the nutrients and hoping for balance, Sap Analysis allows you to see exactly what your crop needs and apply nutrients accordingly. If you are interested in reducing the use of chemical inputs, Sap Analysis is a huge benefit."


Keystone Bio-Ag:
430 Voganville Rd. New Holland PA 17557
Phone – 717-354-0614 // Fax – 717-354-6117
keystonebioag@gmail.com Sam, Nic or Levi

Program Director Michelle Gregg

"The test provides a screenshot of nutrient
content in the sap prior to metabolism by plant cells. Producers can anticipate crop needs and counter imbalance with fertility inputs before the plant expresses symptoms of deficiency."



John Kempf

"Measuring the nutrient content of plant sap is a new tool which allows us to evaluate the nutritional integrity of plants in real time and adjust very quickly. This provides farmers with a tremendous advantage, since nutritional imbalances can be determined four to six weeks before they can be observed with comparable analytical methods, giving farmers plenty of time to adjust. It also provides a great deal of value in determining which fertilizers are needed and which are not, saving significant fertilizer costs."

James Bauman

"Sap analysis enables us to accurately and consistently monitor the minerals in the plant sap. This allows us to modify the foliar nutrients precisely to the plant’s specific needs before a nutrient deficiency ever shows up. Analyzing both the young and the old leaves comparatively reveals nutrient mobility and function within the plant, allows us to fine-tune plant nutrition on a profound level. And realize exciting advantages to agronomy."



Mike Omeg

"Sap analysis has become the key component of my nutrient management program. Using this tool I am able to adjust the contents of nutrient applications in real-time, correcting deficiencies or excesses before they become visible in the crop or tissue analyses, thereby maintaining an optimal mineral balance throughout the growing season. Sap analysis maximizes my fruit quality and nutrient density."


Download Sampling Guides
  • The measure of plant success or failure is in the sap, where nutrients are stored, prior to plant use. By knowing in advance what the plant will use next, we can supply inputs in exacting amounts.
  • Monitoring a crop with sap analysis identifies indicators of nutrient crises before they occur, four to six weeks before tissue analysis. This data allows for proactive, prescriptive, nutritional supplementation.
  • The power of sap analysis is the ability to track nutrient flow throughout the growing season, and compare levels to established target values at each stage of development.
  • Results are bolstered yields and no wasted inputs.
  • Analysis equips growers with time to address nutrient problems before manifest as compromised vitality or yields. It is a powerful tool to manage and adjust fertility strategies quickly and precisely, as it captures the exact nutrient uptake before metabolism in plant processes.