AGRIC PRACTICALS FOR WAEC MAY/JUNE 2012

FOR D PURPOSE OF THOSE WHICH THEIR YOUNGER ONCE ARE SITTING FOR WAEC BY MAY 2012 I AM HERE TO HELP U GUYS IN MY OWN LITTLE WAY BT PLS DAT SHOULDNT MAY U TO STOP READING COS DAT IS D ONLY SECRET TO SUCCESS. agric practical

specimen a = wood ash(to be labelled)

b = charcoal(to be labelled)

c = limestone(to be labelled)

d = garden soil

e = dillute hydrochloric acid(to be labelled)

f = 250cm measuring cylinder

more coming

AGRIC FULL PRACTICAL ANSWERS

A = wood ash | chemical compound = Ca4(PO4)2 SiO4 it is a lime chemical

B = charcoal | source = burnt wood

 C = limestone | chemical compound = CaCO3 | use as lime advantages of b and c 1 : improve the soil structure 2 : increase microbial activities 3 : increases organic matter breakdown 4 : reduces soil ph 5 : enhances the movement of water and air in the soil effacts of excess of a , b and c 1 : decrease the activity of soil microbes 2 : changes soil ph 3 : differencies of iron , magnessiu$ and copper 4 : inhibit absorption of boron 5 : decreases the soil phosphorus there is more specimen

specimen f = measuring cylinder pour the garden soil in a measuring cylinder and add hcl acid to it the soil becomes acidic as it turns blue litmus red in summary any substance that turns blue litmus paper to red is an acidic substance but if it turn red litmus blue it is an alkaline causes of soil acidity 1 : leaching 2 : use of acid fertilizer 3 : accumulation of hydrogen ion in the soil 4 : heavy rainfall 5 : present of sulphur in soil 6 : purification in a water logged soil

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