Abstract
The use of acid tolerant rhizobacteria such as Bradyrhizobium japonicum is one effort for increasing soybean productivity in acid soil. B. japonicum is a N-fixing bacteria that can promote soybean growth through symbiosis with the host plants. The objective of this study was to investigate the growth and production of soybean var. Wilis inoculated by B. japonicum and NPK inorganic fertilizer application in acid soil. Two isolates of B. japonicum that were BJ 11(19) and BJ 11(wt) were used as inoculant for soybean. BJ 11(19) was resulted by transposons mutagenesis, whereas BJ 11(wt) is a wild type of bacteria. Both isolates of B. japonicum were acid tolerant. Soybean was inoculated with BJ 11(19) and BJ 11(wt) combined with compost and nitrogen fertilizer (with two rates). The field experiment was conducted at Cikabayan, Darmaga, in a randomized complete block design with 12 treatments and 3 replicates. The results showed that application of the acid tolerant B. japonicum BJ 11(wt), compost, and nitrogen fertilizer (10 g m-2) increased the plant height, dry weight of shoots and roots, nodule number, dry weight of nodules, nitrogenase activity, number of pod and seed, seed weight, and nitrogen content of seeds in acid soil. Keywords: acid soil, acid tolerant rhizobia, Bradyrhizobium japonicum, compost, nitrogen fertilizer
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Claims 5
Claim · model-written summary
BJ 11(wt), compost and nitrogen fertilizer increased soybean height and shoot and root dry weight in acid soil.
- Taxon
- soybean
Glycine maxe1 - Material
- Wilise1
- Treatment
- B. japonicum BJ 11(wt), compost, and nitrogen fertilizer (10 g m-2)e0
- Interactor
- B. japonicum BJ 11(wt)
Bradyrhizobium japonicume0symbiont - Outcome
- plant height, dry weight of shoots and rootse0
- Direction
- increasede0
- Setting
- acid soile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of the acid tolerant B. japonicum BJ 11(wt), compost, and nitrogen fertilizer (10 g m-2) increased the plant height, dry weight of shoots and roots, nodule number, dry weight of nodules, nitrogenase activity, number of pod and seed, seed weight, and nitrogen content of seeds in acid soil.”
e1“soybean var. Wilis”
Claim · model-written summary
The combined application increased soybean nodule number and nodule dry weight in acid soil.
- Taxon
- soybeanGlycine maxe1
- Material
- Wilise1
- Treatment
- B. japonicum BJ 11(wt), compost, and nitrogen fertilizer (10 g m-2)e0
- Interactor
- B. japonicum BJ 11(wt)Bradyrhizobium japonicume0symbiont
- Outcome
- nodule number, dry weight of nodulese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of the acid tolerant B. japonicum BJ 11(wt), compost, and nitrogen fertilizer (10 g m-2) increased the plant height, dry weight of shoots and roots, nodule number, dry weight of nodules, nitrogenase activity, number of pod and seed, seed weight, and nitrogen content of seeds in acid soil.”
e1“soybean var. Wilis”
Claim · model-written summary
The combined application increased soybean nitrogenase activity in acid soil.
- Taxon
- soybeanGlycine maxe1
- Material
- Wilise1
- Treatment
- B. japonicum BJ 11(wt), compost, and nitrogen fertilizer (10 g m-2)e0
- Interactor
- B. japonicum BJ 11(wt)Bradyrhizobium japonicume0symbiont
- Outcome
- nitrogenase activitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of the acid tolerant B. japonicum BJ 11(wt), compost, and nitrogen fertilizer (10 g m-2) increased the plant height, dry weight of shoots and roots, nodule number, dry weight of nodules, nitrogenase activity, number of pod and seed, seed weight, and nitrogen content of seeds in acid soil.”
e1“soybean var. Wilis”
Claim · model-written summary
The combined application increased soybean pod and seed number and seed weight in acid soil.
- Taxon
- soybeanGlycine maxe1
- Material
- Wilise1
- Treatment
- B. japonicum BJ 11(wt), compost, and nitrogen fertilizer (10 g m-2)e0
- Interactor
- B. japonicum BJ 11(wt)Bradyrhizobium japonicume0symbiont
- Outcome
- number of pod and seed, seed weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of the acid tolerant B. japonicum BJ 11(wt), compost, and nitrogen fertilizer (10 g m-2) increased the plant height, dry weight of shoots and roots, nodule number, dry weight of nodules, nitrogenase activity, number of pod and seed, seed weight, and nitrogen content of seeds in acid soil.”
e1“soybean var. Wilis”
Claim · model-written summary
The combined application increased soybean seed nitrogen content in acid soil.
- Taxon
- soybeanGlycine maxe1
- Material
- Wilise1
- Treatment
- B. japonicum BJ 11(wt), compost, and nitrogen fertilizer (10 g m-2)e0
- Interactor
- B. japonicum BJ 11(wt)Bradyrhizobium japonicume0symbiont
- Outcome
- nitrogen content of seedse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of the acid tolerant B. japonicum BJ 11(wt), compost, and nitrogen fertilizer (10 g m-2) increased the plant height, dry weight of shoots and roots, nodule number, dry weight of nodules, nitrogenase activity, number of pod and seed, seed weight, and nitrogen content of seeds in acid soil.”
e1“soybean var. Wilis”
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