Flashcards in part 1 Deck (8)
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1
macronutrients include
carbon, hydrogen, oxygen, nitrogen, phosphorus, sulphur, potassium, calcium and magnesium
2
micronutrients
iron, manganese, copper, molybdenum, zn, boron, chlorine and nickel
3
hydroponics
Julion Vonn Sachs in 1860, demonstrated that plants could grow in defined nutrient solution in the complete absence of soil
4
name of some non- mineral nutrients
carbon, hydrogen and oxygen
5
nitrogen and its deficiency symptoms
mainly absorbed as nitrates but some are also taken as nitrites or ammonia. Deficiency: 1. stunted growth
2. premature leaf fall
3. chlorosis
6
phosphorus and its deficiency symptoms
constituent of cell membrane, certain proteins, and all nucleic acids and nucleotides. absorbed by the plants in the form of phosphate ions
deficiency: 1. stunted growth
2. chlorosis that appears first in older leaves
7
potassium and its deficiency symptoms
absorbed as potassium ions and required mainly in the meristematic tissues, buds, leaves and root tips
deficiency: 1. yellow and shrivelled leaf margins
2. mottled interveinal chlorosis
8
