Table 7. Influence of MCPA Application on Quantum Yield of Photosystem II (Yield-II) in Faba Bean Plants Measured by a Chlorophyll Fluorometer (Mini-PAM 03).

Treatments	Quantum yield of photosystem II
No film	0.747
MCPA 0%	0.751
MCPA 1.0%	0.738
MCPA 2.5%	0.737
MCPA 5.0%	0.742
MCPA 7.5%	0.735
MCPA 10%	0.733
LSD (P ≤ 0.05)
Standard Error	0.001a

^aHighly significant