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Nitrogen deficiency is a deficiency of nitrogen in plants. This can occur when organic matter with high carbon content, such as sawdust, is added to soil. [1] Soil organisms use any nitrogen available to break down carbon sources, making nitrogen unavailable to plants. [1] This is known as "robbing" the soil of nitrogen.
Striga hermonthica, commonly known as purple witchweed[1] or giant witchweed, is a hemiparasitic plant [1] that belongs to the family Orobanchaceae. It is devastating to major crops such as sorghum (Sorghum bicolor) and rice (Oryza sativa). [2] In sub-Saharan Africa, apart from sorghum and rice, it also infests maize (Zea mays), pearl millet ...
Scurvy is a disease resulting from a lack of vitamin C (ascorbic acid). [1] Early symptoms of deficiency include weakness, fatigue, and sore arms and legs. [1][2] Without treatment, decreased red blood cells, gum disease, changes to hair, and bleeding from the skin may occur. [1][3] As scurvy worsens, there can be poor wound healing ...
Plant nutrition is the study of the chemical elements and compounds necessary for plant growth and reproduction, plant metabolism and their external supply. In its absence the plant is unable to complete a normal life cycle, or that the element is part of some essential plant constituent or metabolite. This is in accordance with Justus von ...
Anxiety and depression have been found to increase susceptibility to marijuana use. [52] This is due to a desire to alleviate the symptoms of these experiences through marijuana use. Chronic users who use for anxiolytic purposes will even develop dependencies on cannabis, making it difficult to cope with anxiety when the drug is absent.
In plants a micronutrient deficiency (or trace mineral deficiency) is a physiological plant disorder which occurs when a micronutrient is deficient in the soil in which a plant grows. Micronutrients are distinguished from macronutrients (nitrogen, phosphorus, sulfur, potassium, calcium and magnesium) by the relatively low quantities needed by ...
Human nutrition deals with the provision of essential nutrients in food that are necessary to support human life and good health. [ 1 ] Poor nutrition is a chronic problem often linked to poverty, food security, or a poor understanding of nutritional requirements. [ 2 ]
406,000 from nutritional deficiencies (2015) [10] Malnutrition occurs when an organism gets too few or too many nutrients , resulting in health problems. [ 11 ] [ 12 ] Specifically, it is a deficiency , excess, or imbalance of energy, protein and other nutrients which adversely affects the body's tissues and form.