Micronutrient Deficiency

Micronutrient deficiency in cannabis plants occurs when essential trace elements—such as iron, zinc, manganese, boron, or molybdenum—become unavailable or depleted in growing media. These conditions are often observed during cultivation rather than as heritable genetic traits, though plant genotype can influence nutrient uptake efficiency and susceptibility to deficiency symptoms. Visual markers include chlorosis (yellowing), necrosis, stunted growth, and abnormal leaf morphology, varying by which nutrient is limiting. Understanding micronutrient requirements is critical for breeders and cultivators working in diverse soil compositions, hydroponic systems, and environmental conditions. Deficiency responses are commonly documented in phenotypic studies and breeding trials to identify robust, nutrient-efficient cultivars.

Breeders select for cultivars with efficient nutrient uptake and robust phenotypic resilience across variable growing substrates. Lines showing reduced deficiency symptom expression under nutrient stress conditions are valued for genetic stability and commercial cultivation consistency.