AGRIC PRATICAL

SPECIMENS:-
A. Wood ash
B. Charcoal
C. Limestone
D. Garden soil
E. Dil HCL
F. Measuring Cylinder
G. Ranging tape
H. Measuring tape
I. pin
J. Garden line
K. Handtrowel
L. Mattock
M. coconut
N. Sweet pepper
O. Sweet Orange
P. Tapeworm
Q. Liverfluke
R. Tick
S. Kitchen knife
T. Hand lens

ANSWERS

A~ WO0D ASH
1. chemical c0mp0und Ca4(PO4)2SiO4.
2. It is a lime chemical.

B~ CHARCOAL
Source; burnt wo0d.

C~ LIMEST0NE
Chemical c0mp0und
CaCO3 are use as lime.

ADVANTAGES/EFFECT OF A, B AND C
1. It improves the soil structure.
2. It increases microbial activities.

ADVANTAGES/EFFECT OF A, B AND C
1. It improves the soil structure.
2. It increases microbial activities.
3. It increases organic matter breakd0wn.
4. It reduces the soil PH.
5. It enhances the m0vement of water and air in the s0il.

EFFECT OF EXCESS OF A,B AND C
1.Decreases the activities of soil micr0bes.
2. Change soil PH
3. Deficiencies of ir0n magnesium and copper.
4. Inhibit abs0rpti0n of bor0n.
5. Decreases the s0il ph0sph0rus.

SPECIMEN F~ MEASURING CYLINDER
Pour the garden s0il in a measuring and add HCL acid to it. The soil bec0mes acidic as it turns blue litmus red.

CAUSES OF S0IL ACIDITY
1. Use of acid fertilizer.
2. Leaching.
3. Accumulati0n of hydr0gen i0n in the s0il.
4. Heavy rainfall.
5. Presence of sulphur in the s0il.
6. Purificati0n in a water l0gged s0il.

EFFECT OF SOIL ACIDITY

1. Reduces soil micr0bial activities.
2. It reduces s0il nutrient.
3. Leaching of s0il nutrient.
4. It reduces rate of purificati0n.
5. Leads to accumulati0n of t0xic material like aluminum and manganese..