Abstract
A filed experiment was conducted at winter successive two seasons of 2012/2013 and 2013/2014 in the Farm of Ismalia Agriculture Research Station, (ARC), Ismalia Governorate, Egypt, to study the effect of different methods addition of humic acid on soil fertility and faba bean (Sakha 3) productivity. Theexperiment includes two methods of application (soil application at rates of 5 and 10 kg humic /fed) and foliar application at rates of (1 g and 2g humic /L water) alone or combined with mineral nitrogen fertilizer at rates of (0, 10, 20 and 30 kg N/fed) as ammonium nitrate (33.5 %N). The obtained results indicated that the effect of addition humic acid methods (soil application or foliar application) significantly increased growth character i.e. plant height (cm), No. of branch /plant, No. of pods/plant, weight of pods /plant (g) and weight of seed/plant (g) in both seasons. As well as, the methods used of humic acid (soil application or foliar application) at different rates had a significant effect on of seed yield (ton/fed), pods yield (ton/fed) and weight of 100 seeds (g) and chlorophyll, respectively, while the protein content was no significant in both seasons. Concerning the effect of humic acid application on N, P and K concentration in seeds were increased with increasing rates of humic 10 kg /fed and mineral N fertilizer 30 kg N/fed. The interaction between humic acid methods system application and different rates of mineral N were significantly increase for Fe in both seasons but no significant for Mn and Zn concentration in seeds faba bean plants. Also, the soil application of humic acid with 10 kg/fed and foliar application at a rate of 2g humic acid /L with 30 kg N led to highest available N, P and K content in soil after faba bean harvest compared with other treatments. On the other hand, the interaction between methods of humic acid application and different rates of mineral N fertilizer on Fe was significant in the first season and Mn in both seasons, while Zn was no significant in both seasons. It can be concluded that soil application of humic acid at rate 10 kg humic /fed and foliar application at rate 2g/L water had a favorable effect on yield and yield component and improve chemical constituents of faba bean and sandy soil.
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Claims 13
Claim · model-written summary
Humic acid application by soil or foliar methods significantly increased plant height, branch number and pod number of faba bean in both seasons.
- Taxon
- faba bean
Vicia fabae0 - Treatment
- addition humic acid methods (soil application or foliar application)e2
- Outcome
- plant height (cm), No. of branch /plant, No. of pods/plante2
- Direction
- increasede2
- Setting
- Ismalia Governorate, Egypte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“faba bean (Sakha 3)”
e1“in the Farm of Ismalia Agriculture Research Station, (ARC), Ismalia Governorate, Egypt”
e2“the effect of addition humic acid methods (soil application or foliar application) significantly increased growth character i.e. plant height (cm), No. of branch /plant, No. of pods/plant, weight of pods /plant (g) and weight of seed/plant (g) in both seasons”
Claim · model-written summary
Humic acid application by soil or foliar methods significantly increased pod and seed weight per plant of faba bean in both seasons.
- Taxon
- faba bean
Vicia fabae0 - Treatment
- addition humic acid methods (soil application or foliar application)e2
- Outcome
- weight of pods /plant (g) and weight of seed/plant (g)e2
- Direction
- increasede2
- Setting
- Ismalia Governorate, Egypte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“faba bean (Sakha 3)”
e1“in the Farm of Ismalia Agriculture Research Station, (ARC), Ismalia Governorate, Egypt”
e2“the effect of addition humic acid methods (soil application or foliar application) significantly increased growth character i.e. plant height (cm), No. of branch /plant, No. of pods/plant, weight of pods /plant (g) and weight of seed/plant (g) in both seasons”
Claim · model-written summary
Humic acid methods at different rates had a significant effect on seed yield, pod yield and 100-seed weight of faba bean.
- Taxon
- faba bean
Vicia fabae0 - Treatment
- methods used of humic acide3
- Outcome
- seed yield (ton/fed), pods yield (ton/fed) and weight of 100 seeds (g)e3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“faba bean (Sakha 3)”
e3“the methods used of humic acid (soil application or foliar application) at different rates had a significant effect on of seed yield (ton/fed), pods yield (ton/fed) and weight of 100 seeds (g) and chlorophyll, respectively”
Claim · model-written summary
Humic acid methods had a significant effect on chlorophyll of faba bean.
- Taxon
- faba bean
Vicia fabae0 - Treatment
- methods used of humic acide3
- Outcome
- chlorophylle3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“faba bean (Sakha 3)”
e3“the methods used of humic acid (soil application or foliar application) at different rates had a significant effect on of seed yield (ton/fed), pods yield (ton/fed) and weight of 100 seeds (g) and chlorophyll, respectively”
Claim · model-written summary
Humic acid methods had no significant effect on protein content of faba bean in either season.
- Taxon
- faba bean
Vicia fabae0 - Treatment
- methods used of humic acide3
- Outcome
- protein contente4
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“faba bean (Sakha 3)”
e3“the methods used of humic acid (soil application or foliar application) at different rates had a significant effect on of seed yield (ton/fed), pods yield (ton/fed) and weight of 100 seeds (g) and chlorophyll, respectively”
e4“the protein content was no significant in both seasons”
Claim · model-written summary
Humic acid application increased N, P and K concentrations in faba bean seeds at higher humic acid and mineral N rates.
- Taxon
- faba bean
Vicia fabae0 - Treatment
- humic acid applicatione5
- Outcome
- N, P and K concentration in seedse5
- Direction
- increasede5
- Qualifier
- with increasing rates of humic 10 kg /fed and mineral N fertilizer 30 kg N/fede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“faba bean (Sakha 3)”
e5“Concerning the effect of humic acid application on N, P and K concentration in seeds were increased with increasing rates of humic 10 kg /fed and mineral N fertilizer 30 kg N/fed”
Claim · model-written summary
The humic acid by mineral N interaction significantly increased seed Fe in faba bean.
- Taxon
- faba bean
Vicia fabae0 - Treatment
- The interaction between humic acid methods system application and different rates of mineral Ne6
- Outcome
- Fee6
- Direction
- significantly increasee6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“faba bean (Sakha 3)”
e6“The interaction between humic acid methods system application and different rates of mineral N were significantly increase for Fe in both seasons but no significant for Mn and Zn concentration in seeds”
Claim · model-written summary
The humic acid by mineral N interaction had no significant effect on seed Mn and Zn concentration in faba bean.
- Taxon
- faba bean
Vicia fabae0 - Treatment
- The interaction between humic acid methods system application and different rates of mineral Ne6
- Outcome
- Mn and Zn concentration in seedse6
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“faba bean (Sakha 3)”
e6“The interaction between humic acid methods system application and different rates of mineral N were significantly increase for Fe in both seasons but no significant for Mn and Zn concentration in seeds”
Claim · model-written summary
The humic acid by mineral N interaction on Fe was significant in the first season of faba bean.
- Taxon
- faba bean
Vicia fabae0 - Treatment
- the interaction between methods of humic acid application and different rates of mineral N fertilizere7
- Outcome
- Fee7
- Qualifier
- in the first seasone7
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“faba bean (Sakha 3)”
e7“the interaction between methods of humic acid application and different rates of mineral N fertilizer on Fe was significant in the first season and Mn in both seasons, while Zn was no significant in both seasons”
Claim · model-written summary
The humic acid by mineral N interaction on Mn was significant in both seasons of faba bean.
- Taxon
- faba bean
Vicia fabae0 - Treatment
- the interaction between methods of humic acid application and different rates of mineral N fertilizere7
- Outcome
- Mne7
- Qualifier
- in both seasonse7
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“faba bean (Sakha 3)”
e7“the interaction between methods of humic acid application and different rates of mineral N fertilizer on Fe was significant in the first season and Mn in both seasons, while Zn was no significant in both seasons”
Claim · model-written summary
The humic acid by mineral N interaction on Zn was not significant in either season of faba bean.
- Taxon
- faba bean
Vicia fabae0 - Treatment
- the interaction between methods of humic acid application and different rates of mineral N fertilizere7
- Outcome
- Zne7
- Qualifier
- in both seasonse7
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“faba bean (Sakha 3)”
e7“the interaction between methods of humic acid application and different rates of mineral N fertilizer on Fe was significant in the first season and Mn in both seasons, while Zn was no significant in both seasons”
Claim · model-written summary
Soil humic acid at 10 kg per feddan with foliar humic acid at 2 g/L and 30 kg N gave the highest available N, P and K in soil after faba bean harvest.
- Taxon
- faba bean
Vicia fabae0 - Treatment
- soil application of humic acid with 10 kg/fed and foliar application at a rate of 2g humic acid /L with 30 kg Ne2
- Outcome
- available N, P and K content in soile2
- Direction
- higheste2
- Comparator
- other treatmentse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“faba bean (Sakha 3)”
e2“the soil application of humic acid with 10 kg/fed and foliar application at a rate of 2g humic acid /L with 30 kg N led to highest available N, P and K content in soil after faba bean harvest compared with other treatments”
Claim · model-written summary
Soil humic acid at 10 kg per feddan plus foliar humic acid at 2 g/L water is recommended for faba bean yield and chemical constituents.
- Taxon
- faba bean
Vicia fabae0 - Treatment
- soil application of humic acid at rate 10 kg humic /fed and foliar application at rate 2g/L watere2
- Outcome
- favorable effect on yield and yield componente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“faba bean (Sakha 3)”
e2“It can be concluded that soil application of humic acid at rate 10 kg humic /fed and foliar application at rate 2g/L water had a favorable effect on yield and yield component and improve chemical constituents of faba bean”
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