Abstract
Abstract Under sterilized-controlled conditions, soybean plant was grown with nitrate (N), Rhizobium inoculation (R), or nitrate and Rhizobium inoculation (N+R); under natural light or continuous shade conditions. Plant growth, respiration of root system, and yield were investigated in relation to nitrogen fixation. Nonnodulated plants (N) accumulated larger amount of dry matter as compared to (N+R) plants, and the opposite was found true at pod filling stage when the plants were exposed to natural light. R-plants were found to be the lowest in the accumulation of dry matter and the earliest in senescence. Nodule size and not nodule number, proved to be a good indicator for the nitrogen fixing activity. Nitrate suppressed both the size and specific activity of nodules. Specific respiratory activity of nodules was estimated to be up to three times as that of roots. Regarding seed yield, R-plants were the lowest and N-plants were the highest. (N+R) plants were the highest in the pod number per plant, while R-plants were almost the lowest in yield components. It was suggested that adequate supply of combined nitrogen in addition to nodule fixed nitrogen was necessary to get high yield.
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Claims 12
Claim · model-written summary
Nonnodulated soybean plants grown with nitrate accumulated more dry matter than plants given nitrate and Rhizobium (N+R).
- Taxon
- soybean
Glycine maxe1 - Treatment
- nitratee1
- Outcome
- dry mattere2
- Direction
- largere2
- Comparator
- N+Re2
- Setting
- sterilized-controlled conditionse1
RhizobiumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Under sterilized-controlled conditions, soybean plant was grown with nitrate (N), Rhizobium inoculation (R), or nitrate and Rhizobium inoculation (N+R)”
e2“Nonnodulated plants (N) accumulated larger amount of dry matter as compared to (N+R) plants, and the opposite was found true at pod filling stage when the plants were exposed to natural light”
Claim · model-written summary
At pod filling under natural light, plants given nitrate and Rhizobium (N+R) had higher dry matter than nonnodulated N plants.
- Taxon
- soybeanGlycine maxe1
- Organ / stage
- pod filling stagee2
- Treatment
- nitrate and Rhizobium inoculation (N+R)e1
- Outcome
- dry mattere2
- Direction
- oppositee2
- Comparator
- Nonnodulated plants (N)e2
- Setting
- natural lighte2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Under sterilized-controlled conditions, soybean plant was grown with nitrate (N), Rhizobium inoculation (R), or nitrate and Rhizobium inoculation (N+R)”
e2“Nonnodulated plants (N) accumulated larger amount of dry matter as compared to (N+R) plants, and the opposite was found true at pod filling stage when the plants were exposed to natural light”
Claim · model-written summary
Rhizobium-inoculated (R) plants had the lowest dry matter accumulation.
- Taxon
- soybeanGlycine maxe1
- Treatment
- Rhizobium inoculation (R)e1
- Outcome
- accumulation of dry mattere3
- Direction
- loweste3
- Comparator
- nitrate (N)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Under sterilized-controlled conditions, soybean plant was grown with nitrate (N), Rhizobium inoculation (R), or nitrate and Rhizobium inoculation (N+R)”
e3“R-plants were found to be the lowest in the accumulation of dry matter and the earliest in senescence”
Claim · model-written summary
Rhizobium-inoculated (R) plants showed the earliest senescence.
- Taxon
- soybeanGlycine maxe1
- Treatment
- Rhizobium inoculation (R)e1
- Outcome
- senescencee3
- Direction
- earlieste3
- Comparator
- nitrate (N)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Under sterilized-controlled conditions, soybean plant was grown with nitrate (N), Rhizobium inoculation (R), or nitrate and Rhizobium inoculation (N+R)”
e3“R-plants were found to be the lowest in the accumulation of dry matter and the earliest in senescence”
Claim · model-written summary
Nodule size, rather than nodule number, was a good indicator of nitrogen fixing activity in soybean.
- Taxon
- soybeanGlycine maxe1
- Organ / stage
- Nodule sizee4
- Outcome
- nitrogen fixing activitye4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Under sterilized-controlled conditions, soybean plant was grown with nitrate (N), Rhizobium inoculation (R), or nitrate and Rhizobium inoculation (N+R)”
e4“Nodule size and not nodule number, proved to be a good indicator for the nitrogen fixing activity”
Claim · model-written summary
Nitrate suppressed nodule size and specific activity in soybean.
- Taxon
- soybeanGlycine maxe1
- Organ / stage
- nodulese5
- Treatment
- nitratee5
- Outcome
- size and specific activitye5
- Direction
- suppressede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Under sterilized-controlled conditions, soybean plant was grown with nitrate (N), Rhizobium inoculation (R), or nitrate and Rhizobium inoculation (N+R)”
e5“Nitrate suppressed both the size and specific activity of nodules”
Claim · model-written summary
Specific respiratory activity of nodules was up to three times that of roots in soybean.
- Taxon
- soybeanGlycine maxe1
- Organ / stage
- nodulese6
- Outcome
- specific respiratory activity of nodulese6
- Value
- up to three timese6
- Comparator
- rootse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Under sterilized-controlled conditions, soybean plant was grown with nitrate (N), Rhizobium inoculation (R), or nitrate and Rhizobium inoculation (N+R)”
e6“Specific respiratory activity of nodules was estimated to be up to three times as that of roots”
Claim · model-written summary
Rhizobium-inoculated (R) soybean plants had the lowest seed yield.
- Taxon
- soybeanGlycine maxe1
- Treatment
- Rhizobium inoculation (R)e1
- Outcome
- seed yielde7
- Direction
- loweste7
- Comparator
- nitrate (N)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Under sterilized-controlled conditions, soybean plant was grown with nitrate (N), Rhizobium inoculation (R), or nitrate and Rhizobium inoculation (N+R)”
e7“Regarding seed yield, R-plants were the lowest and N-plants were the highest”
Claim · model-written summary
Nitrate-grown (N) soybean plants had the highest seed yield.
- Taxon
- soybeanGlycine maxe1
- Treatment
- nitratee1
- Outcome
- seed yielde7
- Direction
- higheste7
- Comparator
- Rhizobium inoculation (R), or nitrate and Rhizobium inoculation (N+R)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Under sterilized-controlled conditions, soybean plant was grown with nitrate (N), Rhizobium inoculation (R), or nitrate and Rhizobium inoculation (N+R)”
e7“Regarding seed yield, R-plants were the lowest and N-plants were the highest”
Claim · model-written summary
Plants given nitrate and Rhizobium (N+R) had the highest pod number per plant.
- Taxon
- soybeanGlycine maxe1
- Treatment
- nitrate and Rhizobium inoculation (N+R)e1
- Outcome
- pod number per plante2
- Direction
- higheste2
- Comparator
- nitrate (N)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Under sterilized-controlled conditions, soybean plant was grown with nitrate (N), Rhizobium inoculation (R), or nitrate and Rhizobium inoculation (N+R)”
e2“(N+R) plants were the highest in the pod number per plant”
Claim · model-written summary
Rhizobium-inoculated (R) soybean plants had almost the lowest yield components.
- Taxon
- soybeanGlycine maxe1
- Treatment
- Rhizobium inoculation (R)e1
- Outcome
- yield componentse3
- Direction
- almost the loweste3
- Comparator
- nitrate (N)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Under sterilized-controlled conditions, soybean plant was grown with nitrate (N), Rhizobium inoculation (R), or nitrate and Rhizobium inoculation (N+R)”
e3“R-plants were almost the lowest in yield components”
Claim · model-written summary
Adequate combined nitrogen supply in addition to nodule-fixed nitrogen is suggested as necessary for high soybean yield.
- Taxon
- soybeanGlycine maxe1
- Treatment
- adequate supply of combined nitrogene4
- Outcome
- high yielde4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Under sterilized-controlled conditions, soybean plant was grown with nitrate (N), Rhizobium inoculation (R), or nitrate and Rhizobium inoculation (N+R)”
e4“It was suggested that adequate supply of combined nitrogen in addition to nodule fixed nitrogen was necessary to get high yield”
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