Abstract
Faba bean productivity is highly influenced by N-inputs; yet, mineral N-fertilizers might undergo rapid leaching in light textured soils. On the other hand, these mineral fertilizers are more preferable than organic N-sources to raise protein content in bean seeds. Thus, the current study investigates to what extent organic fertilizers can partially substitute chemical N-inputs to satisfy plant needs for nutrients. Also, irradiating seeds is another approach to increase plant productivity by inducing further nutrient carriers to raise the effectiveness of the applied N-fertilizers. These two approaches were used in combination, in this study, to increase bean productivity grown on a poor fertile light textured soil (90.5% sand). To fulfill this aim, a field experiment was carried out during the winter season of 2017/2018 following a split plot design where the different N-sources (organic vs inorganic and mixtures of these two N- sources, all applied at the recommended dose i.e. 48 kg N ha-1) were plotted in the main plots while γ-irradiated seed treatments were plotted in the subplots. Irradiating bean seeds with gamma rays at a rate of 20 Gy (the least dose) increased significantly NPK uptake by beans and also enhanced plant growth. This consequently raised significantly the grain yield; however, increasing the dose of seed irradiation (>20 Gy) lessened significantly plant growth parameters and seed yield. The combined N-treatments also raised considerably NPK uptake by bean and recording the highest significant increases in plant growth parameters and grain yield. Moreover, mixed treatments recorded comparable protein contents in bean grains vs plants received 100% ammonium sulphate. Combination between seed irradiation and mixed N-sources were of positive effect on plant growth parameters and grain yield at only 20 Gy, while these parameters decreased considerably thereafter. In conclusion, seed irradiation may be a useful technique to increase legume plant growth; however, slight increases in the used dose may negatively affect the total quantity of the grain yield. The aforementioned results highlight the importance of amending light textured soils with the mixed (organic+mineral) N-sources to increase the productivity of faba bean grown on a such soil.
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Claims 14
Claim · model-written summary
Seed irradiation at 20 Gy significantly increased bean NPK uptake.
Not reportedComparator
Verbatim
e0“Irradiating bean seeds with gamma rays at a rate of 20 Gy (the least dose) increased significantly NPK uptake by beans”
Claim · model-written summary
Seed irradiation at 20 Gy enhanced plant growth.
Not reportedComparator
Verbatim
e0“Irradiating bean seeds with gamma rays at a rate of 20 Gy (the least dose) increased significantly NPK uptake by beans and also enhanced plant growth”
Claim · model-written summary
Seed irradiation at 20 Gy significantly increased grain yield.
- Taxon
- faba bean
Vicia fabat0 - Treatment
- gamma rays at a rate of 20 Gye1
- Outcome
- grain yielde0
- Direction
- raisede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This consequently raised significantly the grain yield”
t0“faba bean”
e1“Irradiating bean seeds with gamma rays at a rate of 20 Gy”
Claim · model-written summary
Seed irradiation above 20 Gy significantly reduced plant growth parameters.
- Taxon
- faba beanVicia fabat0
- Treatment
- seed irradiation (>20 Gy)e0
- Outcome
- plant growth parameterse0
- Direction
- lessenede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing the dose of seed irradiation (>20 Gy) lessened significantly plant growth parameters and seed yield”
t0“faba bean”
Claim · model-written summary
Seed irradiation above 20 Gy significantly reduced seed yield.
- Taxon
- faba beanVicia fabat0
- Treatment
- seed irradiation (>20 Gy)e0
- Outcome
- seed yielde0
- Direction
- lessenede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing the dose of seed irradiation (>20 Gy) lessened significantly plant growth parameters and seed yield”
t0“faba bean”
Claim · model-written summary
Combined nitrogen treatments considerably increased bean NPK uptake.
Not reportedComparator
Verbatim
e0“The combined N-treatments also raised considerably NPK uptake by bean”
Claim · model-written summary
Combined nitrogen treatments significantly increased plant growth parameters.
- Taxon
- faba beanVicia fabat0
- Treatment
- combined N-treatmentse0
- Outcome
- plant growth parameterse0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combined N-treatments also raised considerably NPK uptake by bean and recording the highest significant increases in plant growth parameters and grain yield”
t0“faba bean”
Claim · model-written summary
Combined nitrogen treatments significantly increased grain yield.
- Taxon
- faba beanVicia fabat0
- Treatment
- combined N-treatmentse0
- Outcome
- grain yielde0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combined N-treatments also raised considerably NPK uptake by bean and recording the highest significant increases in plant growth parameters and grain yield”
t0“faba bean”
Claim · model-written summary
Mixed nitrogen treatments produced comparable bean grain protein content to 100% ammonium sulphate.
Verbatim
e0“mixed treatments recorded comparable protein contents in bean grains vs plants received 100% ammonium sulphate”
Claim · model-written summary
At 20 Gy, combining seed irradiation with mixed nitrogen sources improved plant growth parameters.
- Taxon
- faba beanVicia fabat0
- Treatment
- Combination between seed irradiation and mixed N-sourcese0
- Outcome
- plant growth parameterse0
- Direction
- positive effecte0
- Qualifier
- at only 20 Gye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Combination between seed irradiation and mixed N-sources were of positive effect on plant growth parameters and grain yield at only 20 Gy”
t0“faba bean”
Claim · model-written summary
At 20 Gy, combining seed irradiation with mixed nitrogen sources improved grain yield.
- Taxon
- faba beanVicia fabat0
- Treatment
- Combination between seed irradiation and mixed N-sourcese0
- Outcome
- grain yielde0
- Direction
- positive effecte0
- Qualifier
- at only 20 Gye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Combination between seed irradiation and mixed N-sources were of positive effect on plant growth parameters and grain yield at only 20 Gy”
t0“faba bean”
Claim · model-written summary
At irradiation doses above 20 Gy with mixed nitrogen sources, plant growth parameters decreased.
- Taxon
- faba beanVicia fabat0
- Treatment
- Combination between seed irradiation and mixed N-sourcese0
- Outcome
- plant growth parameterse0
- Direction
- decreasede0
- Qualifier
- thereaftere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Combination between seed irradiation and mixed N-sources were of positive effect on plant growth parameters and grain yield at only 20 Gy, while these parameters decreased considerably thereafter”
t0“faba bean”
Claim · model-written summary
At irradiation doses above 20 Gy with mixed nitrogen sources, grain yield decreased.
- Taxon
- faba beanVicia fabat0
- Treatment
- Combination between seed irradiation and mixed N-sourcese0
- Outcome
- grain yielde0
- Direction
- decreasede0
- Qualifier
- thereaftere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Combination between seed irradiation and mixed N-sources were of positive effect on plant growth parameters and grain yield at only 20 Gy, while these parameters decreased considerably thereafter”
t0“faba bean”
Claim · model-written summary
The authors recommend mixed organic and mineral nitrogen sources for faba bean productivity in light textured soil.
- Taxon
- faba beanVicia fabae0
- Outcome
- amending light textured soils with the mixed (organic+mineral) N-sourcese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“amending light textured soils with the mixed (organic+mineral) N-sources to increase the productivity of faba bean grown on a such soil”
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