Abstract
A field experiment was conducted during the spring seasons of 1991 and 1992 at New Delhi to study the effect of irrigation regime and nitrogen on water use and yield of 'Pusa Madhavi' onion (Allium cepa L.). Irrigations at 1.25 irrigation water: cumulative pan-evaporation (IW : CPE) ratio (14-16 irrigations) and I.75IW: CPE ratio (19-21 irrigations) were at par, giving 69.6 and 72.8% higher bulb yield respectively than 0.75 IW : CPE ratio (9-11 irrigations). The seasonal consumptive use was 500, 636 and 784 mm with irrigation at 0.75, 1.25 and 1.75IW: CPE ratio respectively. The water-use efficiency was maximum (50.3 kg/ha/mm) at 1.25 IW : CPE ratio. N application up to 120 kg/ha gave significantly higher dry matter/bulb. 100-bulb weight, bulb diameter and bulb yield than 60kg/ha. The net return/Re investment on N was Rs 12.4 at the optimum level of 131.4 kg N/ha. Increase in N level from 0 to 120 kg/ha increased the consumptive use and water-use efficiency from 560 to 628 mm and 38.1 to 52.1 kg/ha/mm respectively.
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Claims 11
Claim · model-written summary
At 1.25 IW:CPE, onion bulb yield was 69.6% higher than at 0.75 IW:CPE.
- Taxon
- onion
Allium cepat0 - Treatment
- 1.25 irrigation water: cumulative pan-evaporation (IW : CPE) ratioe0
- Outcome
- bulb yielde0
- Direction
- highere0
- Value
- 69.6e0
- Comparator
- 0.75 IW : CPE ratioe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigations at 1.25 irrigation water: cumulative pan-evaporation (IW : CPE) ratio (14-16 irrigations) and I.75IW: CPE ratio (19-21 irrigations) were at par, giving 69.6 and 72.8% higher bulb yield respectively than 0.75 IW : CPE ratio (9-11 irrigations).”
t0“onion (Allium cepa)”
Claim · model-written summary
At 1.75 IW:CPE, onion bulb yield was 72.8% higher than at 0.75 IW:CPE.
- Taxon
- onionAllium cepat0
- Treatment
- I.75IW: CPE ratioe0
- Outcome
- bulb yielde0
- Direction
- highere0
- Value
- 72.8%e0
- Comparator
- 0.75 IW : CPE ratioe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigations at 1.25 irrigation water: cumulative pan-evaporation (IW : CPE) ratio (14-16 irrigations) and I.75IW: CPE ratio (19-21 irrigations) were at par, giving 69.6 and 72.8% higher bulb yield respectively than 0.75 IW : CPE ratio (9-11 irrigations).”
t0“onion (Allium cepa)”
Claim · model-written summary
Onion seasonal consumptive use was 500 mm at 0.75 IW:CPE.
- Taxon
- onionAllium cepat0
- Treatment
- 0.75e0
- Outcome
- seasonal consumptive usee0
- Value
- 500e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The seasonal consumptive use was 500, 636 and 784 mm with irrigation at 0.75, 1.25 and 1.75IW: CPE ratio respectively.”
t0“onion (Allium cepa)”
Claim · model-written summary
Onion seasonal consumptive use was 636 mm at 1.25 IW:CPE.
- Taxon
- onionAllium cepat0
- Treatment
- 1.25e0
- Outcome
- seasonal consumptive usee0
- Value
- 636e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The seasonal consumptive use was 500, 636 and 784 mm with irrigation at 0.75, 1.25 and 1.75IW: CPE ratio respectively.”
t0“onion (Allium cepa)”
Claim · model-written summary
Onion seasonal consumptive use was 784 mm at 1.75 IW:CPE.
- Taxon
- onionAllium cepat0
- Treatment
- 1.75IW: CPE ratioe0
- Outcome
- seasonal consumptive usee0
- Value
- 784 mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The seasonal consumptive use was 500, 636 and 784 mm with irrigation at 0.75, 1.25 and 1.75IW: CPE ratio respectively.”
t0“onion (Allium cepa)”
Claim · model-written summary
Onion water-use efficiency peaked at 50.3 kg/ha/mm with 1.25 IW:CPE irrigation.
- Taxon
- onionAllium cepat0
- Treatment
- 1.25 IW : CPE ratioe0
- Outcome
- water-use efficiencye0
- Direction
- maximume0
- Value
- 50.3 kg/ha/mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The water-use efficiency was maximum (50.3 kg/ha/mm) at 1.25 IW : CPE ratio.”
t0“onion (Allium cepa)”
Claim · model-written summary
Nitrogen application up to 120 kg/ha significantly increased onion dry matter per bulb, 100-bulb weight and bulb diameter compared with 60 kg/ha.
- Taxon
- onionAllium cepat0
- Treatment
- N application up to 120 kg/hae0
- Outcome
- dry matter/bulb. 100-bulb weight, bulb diametere0
- Direction
- highere0
- Comparator
- 60kg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N application up to 120 kg/ha gave significantly higher dry matter/bulb. 100-bulb weight, bulb diameter and bulb yield than 60kg/ha.”
t0“onion (Allium cepa)”
Claim · model-written summary
Nitrogen application up to 120 kg/ha significantly increased onion bulb yield compared with 60 kg/ha.
- Taxon
- onionAllium cepat0
- Treatment
- N application up to 120 kg/hae0
- Outcome
- bulb yielde0
- Direction
- highere0
- Comparator
- 60kg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N application up to 120 kg/ha gave significantly higher dry matter/bulb. 100-bulb weight, bulb diameter and bulb yield than 60kg/ha.”
t0“onion (Allium cepa)”
Claim · model-written summary
The net return per rupee invested in nitrogen was Rs 12.4 at 131.4 kg N/ha.
- Taxon
- onionAllium cepat0
- Treatment
- 131.4 kg N/hae0
- Outcome
- net return/Re investment on Ne0
- Value
- Rs 12.4e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The net return/Re investment on N was Rs 12.4 at the optimum level of 131.4 kg N/ha.”
t0“onion (Allium cepa)”
Claim · model-written summary
Increasing nitrogen from 0 to 120 kg/ha increased onion consumptive use from 560 to 628 mm.
- Taxon
- onionAllium cepat0
- Treatment
- N level from 0 to 120 kg/hae0
- Outcome
- consumptive usee0
- Direction
- increasede0
- Value
- 560 to 628 mme0
- Comparator
- 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increase in N level from 0 to 120 kg/ha increased the consumptive use and water-use efficiency from 560 to 628 mm and 38.1 to 52.1 kg/ha/mm respectively.”
t0“onion (Allium cepa)”
Claim · model-written summary
Increasing nitrogen from 0 to 120 kg/ha increased onion water-use efficiency from 38.1 to 52.1 kg/ha/mm.
- Taxon
- onionAllium cepat0
- Treatment
- N level from 0 to 120 kg/hae0
- Outcome
- water-use efficiencye0
- Direction
- increasede0
- Value
- 38.1 to 52.1 kg/ha/mme0
- Comparator
- 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increase in N level from 0 to 120 kg/ha increased the consumptive use and water-use efficiency from 560 to 628 mm and 38.1 to 52.1 kg/ha/mm respectively.”
t0“onion (Allium cepa)”
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