Page 18 - Griffin Gazette - March 2025
P. 18
FIGURE 1: Onset of iron (Fe) deficiency in cannabis due to high soil pH. Management needed through neutralization of water
alkalinity using acid.
FIGURE 2: Calcium deficiency in hydroponic strawberry during FIGURE 3: Late-season potassium deficiency in high-wire
fruit set. Low calcium in starting water quality requires a calcium greenhouse tomatoes. Growers can increase potassium levels using
fertilizer straight such as calcium nitrate. sources like potassium sulfate.
18 | GRIFFIN GAZETTE 2025
