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Agriculture for Secondary Schools
Cover crop Dead heart (of a plant)
a crop grown to cover the soil and a condition where the central shoot
improve fertility or reduce weeds of a young sorghum plant dries out
due to pest attack
Cowpea
a legume crop grown for its leaves, Dehorning
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pods and dry seeds (kunde in removing full-grown horns in older
Kiswahili) animals if disbudding was not done
early; it needs more care and causes
Crop residue more pain
leftover parts of crops after harvest
Demarcate
Crop rotation to mark the boundaries or limits of
planting different crops in the same something
field each season to maintain soil
health and reduce pests and diseases. Determinate variety
a plant growth habit where the plant
Cropping calendar stops growing once it reaches a
a plan that shows when to plant, certain height, with flowers and pods
take care of, and harvest crops developing at the same time, leading
throughout the year to ensure good to a uniform harvest.
farm management
Dibbling
Crossbreeding a method of planting seeds by placing
mating animals from different breeds them in individual holes at the right
to mix their good qualities, such spacing before covering them with
as faster growth or better disease soil
resistance
Disbudding
Crossbreeds the act of destroying or removing
animals or plants made by mixing horn-producing cells from the horn
two different breeds to get better buds of young calves, typically before
growth, health, or output they are 8 weeks old, to prevent horn
growth and the associated risks
Culling
removing weak, sick or poorly Downy mildew
performing animals from the herd to a fungal disease that makes sorghum
improve the overall health and output leaves turn white or grey, causing
poor growth
Dairy cattle
cattle kept mainly for producing milk Dressing percentage
the weight of a carcass expressed
Dam
a female parent in animals, especially as a proportion of the live weight
of the animal before slaughter. It is
domesticated mammals such as cattle
expressed as a percentage.
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AGRICULTURE F3.indd 236
AGRICULTURE F3.indd 236 17/09/2025 14:12
