|
Determination of
crop yield
1.
At crop
maturity, harvest the central 5-m2 area in the zinc addition
plot (Fig. 1).
2.
Likewise, harvest a representative 5-m2 area in the
designated area outside the zinc addition plot (Fig. 1).
3.
Make
sure that all the grains in the 5-m2 areas are collected and
the harvested samples are properly placed in labeled bags.
4.
Thresh
and clean the harvested grain samples.
5.
Sun dry
the grain sample to constant weight.
6.
Convert
the sample weight to yield in t ha−1 by using the formula:
Yield (t ha−1)
= [(Sample yield in kg)/5] x 10
7.
Determine the zinc response:
Zn response =
Grain yield in Zn addition plot – grain yield without added Zn |
