Explanation

(a) Class of Manure:

• Specimen A; -Organic manure
• Specimen B - Inorganic manure

b) Characteristics of; 

specimen A (Poultry droppings)

• it is bulky .
• Rick in micro-organisms .
• Contains many plant nutrients/improves soil fertility
• The nutrient concentrations are fairly low
• Capable of binding soil particles together / improves soil structure
• Has a bad smell Improves soil temperature
• It is structureless/amorphous
• Tends to be neutral in reaction
• Low availability of nutrients
• Nutrients not easily leached/lasts longer in the soil Reduces soil erosion by improving soil structure
• Variable nutrient concentration

Specimen B (N-P-K 5-15);

• Granular in structure
• Has pungent smell
• Contains only few mineral nutrients
• The concentrations of these nutrients are high
• The nutrients are fixed in definite proportion
• Not bulky in nature
• Easily leached; does not last long in the soil
• Does not reduce soil erosion
• Nutrients are readily available
• Hygroscopic

(c) Precautions to take when applying:

Specimen A (poultry droppings) -

• Should not be applied when fresh to crops on the field
• Must not be allowed to touch the plants
• Should cure properly before application/fully decomposed before applying
• Wash hands immediately after application
• Wear protective clothing
• Should be applied when soil is wet

Specimen B (N-P-K 15-15-15) -

• Do not allow direct contact with the plant
• Do not apply when the soil is very dry
• When applying manually always wear gloves
• Wash hands immediately after application
• Do not apply to alkaline soils
• Do not eat, drink or smoke when applying the fertilizers
• Remove all ornamentals from the body
• Do soil test to know deficient nutrients before applying

(d) Specimen recommended to improve clay soil is - Specimen A (Poultry droppings)

Reasons:

• It binds clayey particles together thus opening up / enlarging the pores
• lt improves water percolation
• lt improves aeration
• It improves soil fertility
• It improves oil drainage
• lt will improve soil temperature in clay soils
• It will enhance the release of locked nutrients and make them more available.

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