Soybean Nutrition in a Novel Single-Nutrient Source Hydroponic Solution

Hydroponic systems are efficient for studying plant nutrition. It is often desirable to adjust individual nutrients unique species’ needs and/or create multiple nutrient deficiencies within the same study. However, this challenging do with traditional solutions as generally added dual salts, such when varying phosphorus (P) concentration also affects nitrogen concentration; potentially, chemical form of taken up ammonium phosphate source P. This can unintended consequences other than those intended adjustment. A new hydroponic system has been created allow using single-nutrient sources, including nitrate; phosphoric, sulfuric, hydrochloric, and boric acids; potassium, calcium, magnesium, zinc, copper carbonates; manganese acetate; sodium molybdate; iron EDDHA; HEDTA an additional chelate. solution was compared a “Hoagland” grow soybean (Glycine max (L.) Merr). Additional treatments included alteration pH in well evaluating levels manganese. proved effective, grown maturity performed Hoagland solution. Adjusting downward hydrochloric acid resulted healthy plants, but not adequately buffered. acetic toxicity. Further work required provide better buffering approximately align tissue concentrations field-grown soybean.