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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

calcium and its deficiency symptoms

present as calcium pectate in the middle lamella of the cell wall
deficiency: 1. chlorosis in the young leaves
2. necrosis
3. curling of leaves