Abstract
Abstract Nitrogen (N) fertilizer has been intensively used to improve peanut productivity. However, the high cost of N fertilizer, and the need for sustainable alternative fertilizer sources have increased the strategic importance of nitrogen fixation (NF). Thus, field experiments were conducted in an experimental farm with a drip irrigation system, at the Atomic Energy Authority, Inshas, Egypt, in order to measure the impact of efficiency symbiotic Bradyrhizobium sp. and asymbiotic Azotobacter sp. on NF, from air and soil, in the presence or absence of plant residues on the growth and yield of peanut plant. All treatments received nitrogen fertilizer at a rate of 72 kg N per hectare. Nitrogen dose was applied using ammonium sulphate 15 N labeled of 10% atom excess from the peanut. Results indicated that the application of Bradyrhizobium sp. with plant residues significantly increased fresh and dry weight/m 2 , pod and seed weight/plant −1 ,100- seed weight, and biological yield kg ha −1 , where the highest mean values of seed yield (4648 and 4529 kg ha −1 ), oil % (52.29 and 52.21%), seed protein percentage (16.09 and 15.89%), as well as nitrogen derived from air (63.14 and 66.20%) in the first and second seasons were recorded under the application of Bradyrhizobium sp, respectively. Bradyrhizobium sp. inoculation showed nearly close portions of Ndfa to those recorded with Azotobacter sp., in both the presence and absence of plant residue application through the two seasons. The investigated yield signs and their properties were significantly enhanced by bacterial inoculation with plant residue application. The present study shows that both possibility of NF of peanut, and nitrogen uptake in the soil are enhanced by field inoculation with effective Bradyrhizobium sp. with plant residue application. In practice, inoculation is a great strategy to improve soil fertility for subsequent planting, since it helps boost the import of nitrogen from plant biomass into the soil.
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Claims 13
Claim · model-written summary
Bradyrhizobium sp. with plant residues significantly increased fresh and dry weight per square metre of peanut.
- Taxon
- peanut
Arachis hypogaeae0 - Treatment
- application of Bradyrhizobium sp. with plant residuese2
- Interactor
- Bradyrhizobium sp.
Bradyrhizobiume2symbiont - Outcome
- fresh and dry weight/m 2e2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen (N) fertilizer has been intensively used to improve peanut productivity”
e2“the application of Bradyrhizobium sp. with plant residues significantly increased fresh and dry weight/m 2”
Claim · model-written summary
Bradyrhizobium sp. with plant residues significantly increased pod and seed weight per plant.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- application of Bradyrhizobium sp. with plant residuese2
- Interactor
- Bradyrhizobium sp.Bradyrhizobiume2symbiont
- Outcome
- pod and seed weight/plante3
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen (N) fertilizer has been intensively used to improve peanut productivity”
e2“the application of Bradyrhizobium sp. with plant residues significantly increased fresh and dry weight/m 2”
e3“pod and seed weight/plant −1 ,100- seed weight, and biological yield kg ha −1”
Claim · model-written summary
Bradyrhizobium sp. with plant residues significantly increased 100-seed weight of peanut.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- application of Bradyrhizobium sp. with plant residuese2
- Interactor
- Bradyrhizobium sp.Bradyrhizobiume2symbiont
- Outcome
- 100- seed weighte3
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen (N) fertilizer has been intensively used to improve peanut productivity”
e2“the application of Bradyrhizobium sp. with plant residues significantly increased fresh and dry weight/m 2”
e3“pod and seed weight/plant −1 ,100- seed weight, and biological yield kg ha −1”
Claim · model-written summary
Bradyrhizobium sp. with plant residues significantly increased biological yield of peanut.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- application of Bradyrhizobium sp. with plant residuese2
- Interactor
- Bradyrhizobium sp.Bradyrhizobiume2symbiont
- Outcome
- biological yielde3
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen (N) fertilizer has been intensively used to improve peanut productivity”
e2“the application of Bradyrhizobium sp. with plant residues significantly increased fresh and dry weight/m 2”
e3“pod and seed weight/plant −1 ,100- seed weight, and biological yield kg ha −1”
Claim · model-written summary
Bradyrhizobium sp. with plant residues gave the highest seed yield of peanut, 4648 and 4529 kg ha −1 in the two seasons.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- application of Bradyrhizobium spe4
- Interactor
- Bradyrhizobium spBradyrhizobiume4symbiont
- Outcome
- seed yielde4
- Direction
- higheste4
- Value
- 4648 and 4529 kg ha −1e4
- Qualifier
- in the first and second seasonse4
- Setting
- Inshas, Egypte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen (N) fertilizer has been intensively used to improve peanut productivity”
e1“field experiments were conducted in an experimental farm with a drip irrigation system, at the Atomic Energy Authority, Inshas, Egypt”
e4“the highest mean values of seed yield (4648 and 4529 kg ha −1 ), oil % (52.29 and 52.21%), seed protein percentage (16.09 and 15.89%), as well as nitrogen derived from air (63.14 and 66.20%) in the first and second seasons were recorded under the application of Bradyrhizobium sp”
Claim · model-written summary
Bradyrhizobium sp. with plant residues gave the highest oil content of peanut, 52.29 and 52.21%.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- application of Bradyrhizobium spe4
- Interactor
- Bradyrhizobium spBradyrhizobiume4symbiont
- Outcome
- oil %e4
- Direction
- higheste4
- Value
- 52.29 and 52.21%e4
- Qualifier
- in the first and second seasonse4
- Setting
- Inshas, Egypte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen (N) fertilizer has been intensively used to improve peanut productivity”
e1“field experiments were conducted in an experimental farm with a drip irrigation system, at the Atomic Energy Authority, Inshas, Egypt”
e4“the highest mean values of seed yield (4648 and 4529 kg ha −1 ), oil % (52.29 and 52.21%), seed protein percentage (16.09 and 15.89%), as well as nitrogen derived from air (63.14 and 66.20%) in the first and second seasons were recorded under the application of Bradyrhizobium sp”
Claim · model-written summary
Bradyrhizobium sp. with plant residues gave the highest seed protein percentage of peanut, 16.09 and 15.89%.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- application of Bradyrhizobium spe4
- Interactor
- Bradyrhizobium spBradyrhizobiume4symbiont
- Outcome
- seed protein percentagee4
- Direction
- higheste4
- Value
- 16.09 and 15.89%e4
- Qualifier
- in the first and second seasonse4
- Setting
- Inshas, Egypte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen (N) fertilizer has been intensively used to improve peanut productivity”
e1“field experiments were conducted in an experimental farm with a drip irrigation system, at the Atomic Energy Authority, Inshas, Egypt”
e4“the highest mean values of seed yield (4648 and 4529 kg ha −1 ), oil % (52.29 and 52.21%), seed protein percentage (16.09 and 15.89%), as well as nitrogen derived from air (63.14 and 66.20%) in the first and second seasons were recorded under the application of Bradyrhizobium sp”
Claim · model-written summary
Bradyrhizobium sp. with plant residues gave the highest nitrogen derived from air in peanut, 63.14 and 66.20%.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- application of Bradyrhizobium spe4
- Interactor
- Bradyrhizobium spBradyrhizobiume4symbiont
- Outcome
- nitrogen derived from aire4
- Direction
- higheste4
- Value
- 63.14 and 66.20%e4
- Qualifier
- in the first and second seasonse4
- Setting
- Inshas, Egypte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen (N) fertilizer has been intensively used to improve peanut productivity”
e1“field experiments were conducted in an experimental farm with a drip irrigation system, at the Atomic Energy Authority, Inshas, Egypt”
e4“the highest mean values of seed yield (4648 and 4529 kg ha −1 ), oil % (52.29 and 52.21%), seed protein percentage (16.09 and 15.89%), as well as nitrogen derived from air (63.14 and 66.20%) in the first and second seasons were recorded under the application of Bradyrhizobium sp”
Claim · model-written summary
Bradyrhizobium sp. inoculation gave nearly close portions of Ndfa to those of Azotobacter sp.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- Bradyrhizobium sp. inoculatione6
- Interactor
- Bradyrhizobium sp.Bradyrhizobiume6symbiont
- Second interactor
- Azotobacter sp.
Azotobactere6symbiont - Outcome
- portions of Ndfae6
- Comparator
- Azotobacter sp.e6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen (N) fertilizer has been intensively used to improve peanut productivity”
e6“Bradyrhizobium sp. inoculation showed nearly close portions of Ndfa to those recorded with Azotobacter sp.”
Claim · model-written summary
Bacterial inoculation with plant residue application significantly enhanced yield signs and their properties of peanut.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- bacterial inoculation with plant residue applicatione7
- Outcome
- yield signs and their propertiese7
- Direction
- enhancede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen (N) fertilizer has been intensively used to improve peanut productivity”
e7“The investigated yield signs and their properties were significantly enhanced by bacterial inoculation with plant residue application”
Claim · model-written summary
Field inoculation with effective Bradyrhizobium sp. with plant residues enhanced the possibility of nitrogen fixation of peanut.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- field inoculation with effective Bradyrhizobium sp. with plant residue applicatione5
- Interactor
- Bradyrhizobium sp.Bradyrhizobiume5symbiont
- Outcome
- possibility of NF of peanute5
- Direction
- enhancede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen (N) fertilizer has been intensively used to improve peanut productivity”
e5“both possibility of NF of peanut, and nitrogen uptake in the soil are enhanced by field inoculation with effective Bradyrhizobium sp. with plant residue application”
Claim · model-written summary
Field inoculation with effective Bradyrhizobium sp. with plant residues enhanced nitrogen uptake in the soil.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- field inoculation with effective Bradyrhizobium sp. with plant residue applicatione5
- Interactor
- Bradyrhizobium sp.Bradyrhizobiume5symbiont
- Outcome
- nitrogen uptake in the soile5
- Direction
- enhancede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen (N) fertilizer has been intensively used to improve peanut productivity”
e5“both possibility of NF of peanut, and nitrogen uptake in the soil are enhanced by field inoculation with effective Bradyrhizobium sp. with plant residue application”
Claim · model-written summary
Inoculation is a strategy to improve soil fertility for subsequent planting.
- Taxon
- peanutArachis hypogaeae0
- Outcome
- improve soil fertility for subsequent plantinge6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen (N) fertilizer has been intensively used to improve peanut productivity”
e6“inoculation is a great strategy to improve soil fertility for subsequent planting”
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