last final thesis of umer

using a spectrophotometer (Olsen et al., 1954). After harvesting, soil sampling was taken from all
treatments at a depth of 20 cm and the above mentioned parameters were analyzed.
3.6 Data Collection and analysis
3.6.1. Phenological stages
For maize
Days to 50% tasseling: The number of days taken from planting to when 50% of the plants in a
plot start emerge tassel.
Days to 90% maturity: The number of days taken from planting to when 90% the plants in a
plot formed black layer at the base of the seed.
For cowpea
Days to 50% flowering: The number of days taken from planting to when 50% of the plants in a
plot start emerges flower.
Days to 90% maturity: The number of days taken from planting to when 90% of the pods of the
plants in the plots get dried.
3.6.2. Growth parameters
For maize
Plant height (cm): The height of five randomly select plants from each row was measured after
tasseling from ground level to the point where the tassel starts branching and the mean value will
record as plant height.
For cowpea
Plant height (cm): five plants were taken as a sample to measure the height of the plants taken
from each row.
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