Variety
Differences
have been reported between the same species, that is, two variety of Lucerne. However,
there may be more actual difference in the feed value of the two lots of the
same variety of hay than there is between hay of two entirely different kinds. Thus,
other factors such as soil fertility, method of harvesting and so on, are much
more important than the variety.
Stage of maturity
Hay that is cut
late has considerably lower digestibility than that which is cut early. If the
early cut hay is cured, the percentage of protein, digestibility and the
content of mineral and vitamin all decrease at hay crops when getting to
maturity stage.
Soil fertility balance
Plant requires
the entire major and minor nutrient in most cases to be able to develop
adequate growth. The low supplies or absent of mineral nutrient in soil affect
both the yield and composition of forages.
Harvesting
Factors such
as the lost of leaves, fermentation, bleaching and leaching all contribute to a
lower value of hay.
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