Frequently Asked Questions

Where can I buy CrossOver?  Availability & Procurement?

General Sales Contact: Tania Raugewitz 724-816-0993

What exactly is CrossOver?  Where does it come from?

CrossOver is a magnesium and calcium silicate-based soil conditioner and soil amendment that when compared to calcium, gypsum and limestone products, provides significantly better and more comprehensive solutions to correct chemical imbalances, nutrient deficiencies, structural instability and soil toxicity issues associated with alkaline, acidic and sodic soils.

CrossOver is derived from a byproduct of the steel industry. Harsco’s recovery and extraction process enables the company to produce a higher quality product than industry standards.

What formulations and packaging will be available for CrossOver?

CrossOver is produced in a variety of formulations to fill the needs of agriculture, turf and horticultural markets from its Global Agronomics Center in Sarver, Pennsylvania.

Various prill formulations in appropriate packaging for agriculture, turf and horticulture suit the individual needs of the many different end users.  Harsco produces gypsum formulations for these three markets where such formulations are recommended.

Products will be packaged as CrossOver Ag, CrossOver Turf and CrossOver Hort in bags of various sizes as well as varying size high volume totes based on customer volume and uses.  The prill and gypsum dry formulations will be available in a variety of granule sizes for specific soil and plant nutrient applications in key markets.

What is a “beneficial substance” as defined by AAPFCO? 

First of all, silicon was recently categorized as a “beneficial substance” by AAPFCO which is the Association of American Plant Food Control Officials.  Silicon is a primary component of CrossOver

The organization defines a “beneficial substance” as any substance or compound other than primary, secondary and micro plant nutrients that can be demonstrated by scientific research to be beneficial to one or more species of plants when applied to the plant or soil. 

Prior to AAPFCO approval, all silicon products were listed on fertilizer labels as a “non-plant food ingredient”. With the new designation, manufacturers can now identify qualifying formulations of silicon as a “plant beneficial substance” – an important distinction.

AAPFCO is an organization of fertilizer control officials who are actively engaged in the administration of fertilizer laws and regulations.  Its purpose is to promote equitable fertilizer legislation, effective fertilizer sampling and analytical protocols, develop high standards for fertilizer inspection techniques and enforcement practices, adequate labeling, and promote safety standards for the safe and effective use of fertilizers and protection of soil and water resources.

What are the benefits of silicon on my plants/crops?

Plant available silicon, released by CrossOver, plays a key role in activating plant processes that enhance and improve the efficiency and effectiveness of defense response systems under environmental stress conditions and biological attack.

Specifically, silicon can help alleviate salt stress, reduce stress from temperature extremes, promote balanced nutrient availability and transport, add structural strength, improve photosynthetic activity and improve plant defense responses to disease and insects.

Why isn’t silicon an essential element?   

Some scientists believe that inadequate attention has been paid to silicon in plant ecological and plant physiological contexts.  They also feel that silicon should be categorized as an “essential element” and the reason it is not lies in the interpretation of the word essential. 

According to Epstein and Bloom (2005), the plant biological community is still not aware that plants grown in media in the formulation of which silicon is not included are experimental artifacts: such minus-silicon plants do not exist in nature or agriculture or forestry. The situation is exacerbated by the continued reliance on a badly flawed definition of essentiality according to which silicon does not qualify as an essential element. That definition has been criticized, and a new one has been devised (Epstein and Bloom 2005). The significance of silicon to plants being so variable, depending on the genotype and a whole raft of environmental conditions, these authors have assigned to silicon the status of a “quasi-essential” element. (This designation is appropriate for sodium, and possibly other elements as well.)