Abstract
A field experiment was conducted during the summer season of 2000-2001 at the Vegetable Research Farm of Indian Agricultural Research Institute (I.A.R.I.), New Delhi (India) to test the efficacy of three Azotobacter strains as a potential supplement to nitrogenous fertilizer in improving growth and yield of onion cv. Pusa Madhvi. The treatments consisted of factorial combination of four levels of nitrogen (0, 25, 50 and 75 kg N ha-1) and three Azotobacter strains (CBD-15, AS-4 and M-4) with two uninoculated controls one with full dose of N (100 kg ha -1) and the other without NPK. Application of 75 kg N ha-1 along with inoculation of CBD-15 was found to have significantly increased most of the growth and yield parameters, soil available nitrogen, and nitrogen content in the bulb followed by M-4 inoculation as compared to application of full dose of nitrogen without the inoculation. Days to bulb initiation were significantly reduced due to inoculation with CBD-15 or M-4 along with 50 kg N ha-1 whereas days to bulb maturity were significantly reduced due to inoculation with any of the strains along with the same N rate (50 kg ha-1) as compared to application of full dose of nitrogen without the inoculation. The finding demonstrated a saving of 50 kg N ha-1 without significantly affecting yield and an average increase of 13.5% marketable yield due to Azotobacter inoculation in the presence of 75 kg N ha-1.
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Claims 8
Claim · model-written summary
CBD-15 inoculation with 75 kg N ha-1 significantly increased growth and yield parameters versus full nitrogen without inoculation.
- Taxon
- onion
Allium cepat0 - Treatment
- 75 kg N ha-1 along with inoculation of CBD-15e0
- Interactor
- CBD-15e0symbiont
- Outcome
- growth and yield parameterse0
- Direction
- increasede0
- Comparator
- full dose of nitrogen without the inoculatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion (Allium cepa L.)”
e0“Application of 75 kg N ha-1 along with inoculation of CBD-15 was found to have significantly increased most of the growth and yield parameters, soil available nitrogen, and nitrogen content in the bulb followed by M-4 inoculation as compared to application of full dose of nitrogen without the inoculation.”
Claim · model-written summary
CBD-15 inoculation with 75 kg N ha-1 significantly increased soil available nitrogen versus full nitrogen without inoculation.
- Taxon
- onionAllium cepat0
- Treatment
- 75 kg N ha-1 along with inoculation of CBD-15e0
- Interactor
- CBD-15e0symbiont
- Outcome
- soil available nitrogene0
- Direction
- increasede0
- Comparator
- full dose of nitrogen without the inoculatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion (Allium cepa L.)”
e0“Application of 75 kg N ha-1 along with inoculation of CBD-15 was found to have significantly increased most of the growth and yield parameters, soil available nitrogen, and nitrogen content in the bulb followed by M-4 inoculation as compared to application of full dose of nitrogen without the inoculation.”
Claim · model-written summary
CBD-15 inoculation with 75 kg N ha-1 significantly increased nitrogen content in the bulb versus full nitrogen without inoculation.
- Taxon
- onionAllium cepat0
- Treatment
- 75 kg N ha-1 along with inoculation of CBD-15e0
- Interactor
- CBD-15e0symbiont
- Outcome
- nitrogen content in the bulbe0
- Direction
- increasede0
- Comparator
- full dose of nitrogen without the inoculatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion (Allium cepa L.)”
e0“Application of 75 kg N ha-1 along with inoculation of CBD-15 was found to have significantly increased most of the growth and yield parameters, soil available nitrogen, and nitrogen content in the bulb followed by M-4 inoculation as compared to application of full dose of nitrogen without the inoculation.”
Claim · model-written summary
Inoculation with CBD-15 and 50 kg N ha-1 reduced time to bulb initiation.
- Taxon
- onionAllium cepat0
- Treatment
- inoculation with CBD-15 or M-4 along with 50 kg N ha-1e0
- Interactor
- CBD-15e0symbiont
- Outcome
- Days to bulb initiatione0
- Direction
- reducede0
- Comparator
- full dose of nitrogen without the inoculatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion (Allium cepa L.)”
e0“Days to bulb initiation were significantly reduced due to inoculation with CBD-15 or M-4 along with 50 kg N ha-1 whereas days to bulb maturity were significantly reduced due to inoculation with any of the strains along with the same N rate (50 kg ha-1) as compared to application of full dose of nitrogen without the inoculation.”
Claim · model-written summary
Inoculation with M-4 and 50 kg N ha-1 reduced time to bulb initiation.
- Taxon
- onionAllium cepat0
- Treatment
- inoculation with CBD-15 or M-4 along with 50 kg N ha-1e0
- Interactor
- M-4e0symbiont
- Outcome
- Days to bulb initiatione0
- Direction
- reducede0
- Comparator
- full dose of nitrogen without the inoculatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion (Allium cepa L.)”
e0“Days to bulb initiation were significantly reduced due to inoculation with CBD-15 or M-4 along with 50 kg N ha-1 whereas days to bulb maturity were significantly reduced due to inoculation with any of the strains along with the same N rate (50 kg ha-1) as compared to application of full dose of nitrogen without the inoculation.”
Claim · model-written summary
Inoculation with any tested strain plus 50 kg ha-1 nitrogen reduced time to bulb maturity.
- Taxon
- onionAllium cepat0
- Treatment
- inoculation with any of the strains along with the same N rate (50 kg ha-1)e0
- Outcome
- days to bulb maturitye0
- Direction
- reducede0
- Comparator
- full dose of nitrogen without the inoculatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion (Allium cepa L.)”
e0“Days to bulb initiation were significantly reduced due to inoculation with CBD-15 or M-4 along with 50 kg N ha-1 whereas days to bulb maturity were significantly reduced due to inoculation with any of the strains along with the same N rate (50 kg ha-1) as compared to application of full dose of nitrogen without the inoculation.”
Claim · model-written summary
The fertilizer strategy saved 50 kg N ha-1 without a significant yield difference.
- Taxon
- onionAllium cepat0
- Treatment
- Azotobacter inoculation in the presence of 75 kg N ha-1e0
- Interactor
- Azotobacter
Azotobactere0symbiont - Outcome
- yielde0
- Direction
- without significantly affectinge0
- Value
- 50 kg N ha-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion (Allium cepa L.)”
e0“The finding demonstrated a saving of 50 kg N ha-1 without significantly affecting yield and an average increase of 13.5% marketable yield due to Azotobacter inoculation in the presence of 75 kg N ha-1.”
Claim · model-written summary
Azotobacter inoculation with 75 kg N ha-1 raised marketable yield by an average 13.5%.
- Taxon
- onionAllium cepat0
- Treatment
- Azotobacter inoculation in the presence of 75 kg N ha-1e0
- Interactor
- AzotobacterAzotobactere0symbiont
- Outcome
- marketable yielde0
- Direction
- increasee0
- Value
- 13.5%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion (Allium cepa L.)”
e0“The finding demonstrated a saving of 50 kg N ha-1 without significantly affecting yield and an average increase of 13.5% marketable yield due to Azotobacter inoculation in the presence of 75 kg N ha-1.”
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