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1999 WAEC Agricultural Science Practical (a) ldentify specimens I and J. Specimen I;               ...

Agricultural Science
WAEC 1999

(a) ldentify specimens I and J.

Specimen I;                      Specimen J;

Calopogonium mucunoides Desv. | Plants of the World Online | Kew Science           Gamba grass | Business Queensland

(b) To what group of forage does each belong?

(c) State four uses of specimen I and three uses of specimen J in agriculture.

(d) Mention four advantages of growing specimens I and J together.

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Explanation

(a) ldentification of Specimens;

  • Specimen I - Calopogonium mucunoldes / Pueraria / Centrosema spp.
  • Specimen J - Northern Gamba (Andropogon gayanus)

(b) Group of forage crops to which they belong:

  • Specimen I - Legume
  • Specimen J - Grass

(c) Úses Specimen I - Calopogonium mucunoides / Puerarial /Centrosema spp.

  • grazed or fed to livestock (livestock feed).
  • used as cover crops.
  • checking of soil erosion.
  • supplies nitrogen to the soil.
  • Can be used as green manure.
  • can also be used as compost material.

Specimen J- Northern Gamba grass:

  • Used as livestock feed,
  • checks erosion,
  • can be used as mulch,
  • can be used for roofing purposes,
  • used as compost material.,
  • straw for bedding, used for roofing and for fencing.

(d) Advantages of planting/ combining the specimens I and J are: -

  • combination serves as a source of balanced ration to ruminants.
  • calopogonium/ puerarlal Centrosema sp will supply nitrogen to the soil thus, enriching the soil
  • to aid the growth of the specimens.
  • smoothering of weeds.,
  • lmproves palatability of forage.
  • combination makes more effective ground cover which prevents erosion and destruction of soil structure.

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