Effect of spraying Benzyl adenine (BA), Zinc and Boron on yield and components of Faba bean

Abstract

Two field experiment were conducted at farm of Field Crops Dept. Coll. of Agaric, Univ of
Baghdad during winter seasons of 2010/2011, 2011/2012 to study effect of spraying of growth
regulators Benzyl adenine (BA), Zinc and Boron separately or combined during important stages
of plant faba beans (Spanish var.) on yield faba bean and its components. A split- split plot with
R.C.B.D. distribution was used by three replications. Levels of Benzyl adenine 0, 75 , 150 mg.l-1

(BA0 , BA1, BA2) respectively occupied the main plots. Zinc treatment 0,25,50mg.l-1
(Zn0 , Zn1 ,
Zn2) respectively occupied the sub-plots. While Boron treatment 0, 150, 300, 450 mg.l-1
(B0 , B1 ,
B2, B3) respectively occupied the sub-sub plots. The results showed that spraying plants with
Benzyl adenine at concentration of BA2 (150 mg.l-1
) or Zinc concentration of zn2 (50 mg.l-1
) or
Boron at concentration of B3 (450 mg.l-1
) increased significantly all studied characteristics of both
seasons. They give the highest fertility rate, number of pods per plant, number of seeds per pod
and total seed yield. While 100 seed weight was increased significantly with using BA1 (75 mg.l-1
)
or zinc at Zn2 (50 mg.l-1
) or boron at B2 (300 mg.l-1
) as compared to the control treatment Results
revealed that interaction between the plant treated with 150 mg.l-1
(BA) concentration, zinc with
50 mg.l-1
and boron with 450 mg.l-1
increased significantly all the studied characteristics and seed
by 44% in of both seasons.