|
[9000724.] رقم البحث : 9000724 - |
|
Effect of Phosphorus Fertilization and Foliar Nutrition With / |
| تخصص البحث : General |
| |
Agricultural Research Journal Suez Canal University / |
| |
A. E. Hassan. |
| |
M. M. sakr.. |
| |
E. A. Ali. |
| |
Phosphorus Fertilization - Micronutrients - Anatomical. |
| |
Two field experiments were carried out at the ? Experimental Farm, Faculty of Agriculture, SuezCanal
University, Ismailia during 2003and 2004seasons to study the effect of two levels of P
2O5 ( 16and 32kg/fed.)
and five foliar micronutrients treatments 700ppm Zn ( ZnSO
4.7H2O) , 600ppm Mn ( MnSO4.7H2O), 600ppm Fe
(FeSO 4.7H2O) , 100ppm B ( H3BO
3) , 100ppm Mo ( Na2
Mo4.2H2O) and the control onanatomical structure and
yield components of soybean crop.
Results showed that phosphorus fertilization and foliar nutrition with some micronutrients (Zn, Fe, B, Mn,
Mo) treatments affected significantly both secondaryroot and stem structure of soybean plants.
Generally, most of the studied parameters of secondary root structure were decreased as a resultof the
most studied treatments. Significantly highest values fo r root transverse section diameter, maximum thickness of
phloem tissue, maximum diameter of xylem cylinder, number of xylem vessels in T.S., number of rays, maximum
width of rays and diameter of maximum vessels were observed at control compared to the studied treatments.
In general, most of the studied anatomical characters (thickness of phloem + cambium, thickness of xylem
ring, width of xylem ring, thickness of medullary rays, width of medullaryrays and number of medullary rays
between the two vascularbundles) of soybean stem increased at 32kg P
2O5/fed., and foliar spraying of Zn, Mn
and Mo treatments. In addition, the maximum values of number of xylem arms/vascular bundle and number of
xylem vessels in T.S. were recorded at 32kg P
2O5/fed., and foliar spraying of B treatment.
Increasing P level from 16kg P
2O5/fed., to 32kg P
2O5/fed., Increasedsignificantly number and weight of
pods and seeds/plant, shelling percentage and seed protein content (%), as well as, oil and protein yields
(kg/fed.) in thetwo growing seasons. While, the two P levels and did not differ significantly from each other
concerning the effect on 100-seed weight in two seasons and seed oil % in the second season only.
Foliar spraying of Zn, Fe, B, Mn or Mo caused significant increases in number and weight of pods and
seeds/plant, shelling percentage, seed oil content (%), seed protein content (%) and yield of protein/fed.
Seed yield and yield (kg/fed.) were significantly increased by foliar spring with the above mentioned
micronutrients, except that Mo did not affect significantly oil yield in the first season, as well as, seed yield in the
second season. Also, foliar spraying with Fe, B or Mo did not exert significant effect on 100-seed weight in the
second season.
The interaction between phosphorus fertilizer levels and micronutrients affected significantly on number of
seed/plant, weight of seeds/plant and seed and oil yields (kg/fed.) in the two growing seasons. The highest values
were obtained with 32kg P
2O5/fed., and foliarsp rayingwith Zn, while the lowest values were obtained with 16
kg P
2O5/fed., without spraying micronutrients |
| |
 Download Paper |
تسجيل دخول 
