(#) Soil Fertility Flashcards
Refers to the ability of the soil to supply nutrients to plants
Soil fertility
Refers to the ability fo the soil to produce the desired quantities of plant yield
Soil productivity
(Just keep note of this)
Masagana 99
Refers to the supply and absorption of chemical elements or compounds required by the plants
plant nutrition
Classifications of nutrients
Macro (needed in large quantities)
Micro (needed in small quantities)
When is a nutrient considered essential?
1) if its absence makes it impossible for a plant to complete its cycle
2) If its function is not substituted by other elements
Sources of nitrogen
rocks, atmosphere, minerals
Why is nitrogen important in plants?
component of chlorophyll, proteins, and amino acid
What happens if there’s too much nitrogen in a plant?
1) chlorosis
2) stunted growth
3) yellowing
4) spindly stems
What happens when there’s too much nitrogen in a plant?
1) lodging
2) delay maturity
3) susceptibility to pests and diseases
Sources of phosphorus
rocks and minerals
Importance of phosphorus in plants
1) Component of ATP and nucleic acid
What happens when there’s a lack of phosphorus in a plant?
1) stunted
2) thin-stemmed
3) dark/bluish green foliage
Importance of potassium in plants
1) enzyme catalyst
2) sugar synthesis
3) fiber strengthening
What happens when there’s a lack of potassium in a plant?
1) chlorosis to necrosis of leaves
2) lodging
3) poor drought tolerance
4) susceptible to pests and diseases
