Abstract
Two field experiments were carried out at the farm of El-Gemmeiza Agric.Res. Station, Agric.Res. Center, during the two successive growing seasons; 1998/99 and 1999/2000 to study the effect of Zn, Mn and Fe on plant growth, photosynthetic pigments and some micronutrients content of faba bean leaves at 70 days age. Zn, Mn and Fe were added by seed coating method at a rate of 0.3gm of Zn or Fe and 0.15 gm of Mn in chelating form per one kilogram seed, individually or in all possible combination. Yet, the relations between the content of photosynthetic pigments and micronutrients in leaves were considered. The mean results of the two growing seasons showed that plant height, number of both leaves and branches as well as dry matter of various organs seemed to be improved by the different treatments. Moreover, photosynthetic pigments and micronutrients content in leaves were also significantly increased as a result of micronutrients application. In this respect, addition of Zn,Mn and Fe simultaneously induced the highest values for all aforementioned parameters followed by the dual combinations, whereas the individual treatments recorded the least increments compared with the control treatment. On the other hand, photosynthetic pigments in faba bean leaves were positively correlated by micronutrients content at different treatments of micronutrients as the following descending order: Mn< Zn < Fe. The aforesaid relations can be expressed as the following multiple equations: Y1 = 3.37 + 38.18X1** + 28.42X2** + 1.63X3** (r2 = 0.999) Y2 = 1.61 + 3.82X1** + 17.35X2 + 1.21X3* (r2 = 0.989) Where; Y1, Y2, X1, X2 and X3 indicate the mean values of Chl.(a+b), carotene, Zn,Mn and Fe content in leaves, respectively in (mg/plant). * significant at 0.05 level ** significant at 0.01 level
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Claims 7
Claim · model-written summary
Micronutrient seed coatings improved plant height, leaf and branch numbers, and organ dry matter.
- Taxon
- faba bean
Vicia fabae2 - Treatment
- Zn, Mn and Fee1
- Outcome
- plant height, number of both leaves and branchese0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant height, number of both leaves and branches as well as dry matter of various organs seemed to be improved by the different treatments.”
e1“Zn, Mn and Fe were added by seed coating method”
e2“of faba bean leaves at 70 days age”
Claim · model-written summary
Micronutrient applications significantly increased photosynthetic pigments and leaf micronutrient contents.
- Taxon
- faba beanVicia fabae1
- Treatment
- micronutrients applicatione0
- Outcome
- photosynthetic pigments and micronutrients content in leavese0
- Direction
- increasede0
- Comparator
- control treatmente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“photosynthetic pigments and micronutrients content in leaves were also significantly increased as a result of micronutrients application”
e1“of faba bean leaves at 70 days age”
e2“compared with the control treatment”
Claim · model-written summary
Combined Zn, Mn and Fe gave the highest values of the measured growth and leaf parameters.
- Taxon
- faba beanVicia fabae1
- Treatment
- Zn,Mn and Fe simultaneouslye0
- Outcome
- highest values for all aforementioned parameterse0
- Direction
- higheste0
- Comparator
- dual combinationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“addition of Zn,Mn and Fe simultaneously induced the highest values for all aforementioned parameters followed by the dual combinations, whereas the individual treatments recorded the least increments compared with the control treatment”
e1“of faba bean leaves at 70 days age”
Claim · model-written summary
Dual micronutrient combinations ranked above individual treatments for the measured parameters.
- Taxon
- faba beanVicia fabae1
- Treatment
- dual combinationse0
- Outcome
- followed by the dual combinationse0
- Direction
- followede0
- Comparator
- individual treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“followed by the dual combinations, whereas the individual treatments recorded the least increments compared with the control treatment”
e1“of faba bean leaves at 70 days age”
Claim · model-written summary
Leaf photosynthetic pigments correlated positively with leaf micronutrient content.
- Taxon
- faba beanVicia fabae0
- Compound
- micronutrientse0
- Outcome
- photosynthetic pigmentse0
- Direction
- positively correlatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“photosynthetic pigments in faba bean leaves were positively correlated by micronutrients content at different treatments of micronutrients as the following descending order: Mn< Zn < Fe”
Claim · model-written summary
The reported regression for chlorophyll and micronutrient contents had r2 = 0.999.
- Taxon
- faba beanVicia fabae2
- Compound
- Zn,Mn and Fee1
- Outcome
- Chl.(a+b)e1
- Value
- r2 = 0.999e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Y1 = 3.37 + 38.18X1** + 28.42X2** + 1.63X3** (r2 = 0.999)”
e1“Y1, Y2, X1, X2 and X3 indicate the mean values of Chl.(a+b), carotene, Zn,Mn and Fe content in leaves, respectively in (mg/plant).”
e2“of faba bean leaves at 70 days age”
Claim · model-written summary
The reported regression for carotene and micronutrient contents had r2 = 0.989.
- Taxon
- faba beanVicia fabae2
- Compound
- Zn,Mn and Fee1
- Outcome
- carotenee1
- Value
- r2 = 0.989e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Y2 = 1.61 + 3.82X1** + 17.35X2 + 1.21X3* (r2 = 0.989)”
e1“Y1, Y2, X1, X2 and X3 indicate the mean values of Chl.(a+b), carotene, Zn,Mn and Fe content in leaves, respectively in (mg/plant).”
e2“of faba bean leaves at 70 days age”
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