Abstract
Chickpea ( Cicer arietinum ) is a promising post-wet-season crop to follow rainfed rice ( Oryza sativa ) in the High Barind Tract of northwestern Bangladesh. Yields in farmers' fields, however, remain low (<1 t ha −1 ) primarily due to such factors as poor crop establishment, late sowing, and terminal drought and heat stress. Having been shown to improve plant stand and yield of chickpea in other environments, seed priming – soaking the seed overnight before surface drying and sowing the next day – was tested for its efficacy under Barind conditions. In the 1998–99 season, 30 trials grown entirely on residual soil moisture were conducted in farmers' fields. A statistically significant mean yield response to priming of 47% was obtained. In 1999–2000, 105 on-farm trials and 15 demonstrations comparing presence and absence of priming were conducted. The crop received rain during this growing season. In a randomly chosen subset of 35 trials, scientists recorded a mean yield increase due to priming of 20%; it was 22% (from 1.02 to 1.25 t ha −1 ) in the remaining 64 trials (6 of the 105 trials were abandoned) where farmers recorded yields. Using a different variety, the mean yield response to priming in 15 demonstrations was 17% (from 1.25 to 1.46 t ha −1 ). The priming response was attributed mainly to rapid seedling establishment, with higher plant stand and earlier crop maturity allowing escape from end-of-season stresses. Priming also reduced the incidence of stem and root diseases, and increased nodulation by native rhizobia. This simple technology can substantially increase chickpea yields to remunerative levels for the resource-poor farmers in this difficult environment. Further, it is suggested that this technology can act as a catalyst for the introduction of further technologies that will permit reliable and profitable cultivation of post-rainy-season crops and thus improve the livelihoods of the rural population.
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Claims 10
Claim · model-written summary
Seed priming raised mean chickpea yield 47% in 1998–99 trials.
- Taxon
- Chickpea ( Cicer arietinum )
Cicer arietinume1 - Treatment
- priminge0
- Outcome
- yield responsee0
- Direction
- responsee0
- Value
- 47%e0
- Qualifier
- 1998–99 seasone0
- Setting
- farmers' fieldse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the 1998–99 season, 30 trials grown entirely on residual soil moisture were conducted in farmers' fields. A statistically significant mean yield response to priming of 47% was obtained”
e1“Chickpea ( Cicer arietinum )”
e2“High Barind Tract of northwestern Bangladesh”
Claim · model-written summary
Scientist-recorded 1999–2000 trials showed 20% mean yield increase from priming.
- Taxon
- Chickpea ( Cicer arietinum )Cicer arietinume1
- Treatment
- priminge0
- Outcome
- yielde0
- Direction
- increasee0
- Value
- 20%e0
- Qualifier
- randomly chosen subset of 35 trialse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In a randomly chosen subset of 35 trials, scientists recorded a mean yield increase due to priming of 20%”
e1“Chickpea ( Cicer arietinum )”
e2“In 1999–2000, 105 on-farm trials”
Claim · model-written summary
Farmer-recorded trials showed 22% yield increase from priming, from 1.02 to 1.25 t ha −1.
- Taxon
- Chickpea ( Cicer arietinum )Cicer arietinume1
- Treatment
- priminge2
- Outcome
- yieldse0
- Direction
- increasee2
- Value
- 22%e0
- Qualifier
- from 1.02 to 1.25 t ha −1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it was 22% (from 1.02 to 1.25 t ha −1 ) in the remaining 64 trials (6 of the 105 trials were abandoned) where farmers recorded yields”
e1“Chickpea ( Cicer arietinum )”
e2“mean yield increase due to priming”
Claim · model-written summary
Demonstrations with a different variety showed 17% yield response to priming, from 1.25 to 1.46 t ha −1.
- Taxon
- Chickpea ( Cicer arietinum )Cicer arietinume1
- Treatment
- priminge0
- Outcome
- yield responsee0
- Direction
- responsee0
- Value
- 17%e0
- Qualifier
- from 1.25 to 1.46 t ha −1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Using a different variety, the mean yield response to priming in 15 demonstrations was 17% (from 1.25 to 1.46 t ha −1 )”
e1“Chickpea ( Cicer arietinum )”
Claim · model-written summary
Priming increased plant stand and accelerated crop maturity.
- Taxon
- Chickpea ( Cicer arietinum )Cicer arietinume1
- Treatment
- priminge2
- Outcome
- plant stand and earlier crop maturitye0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher plant stand and earlier crop maturity”
e1“Chickpea ( Cicer arietinum )”
e2“The priming response was attributed mainly to rapid seedling establishment”
Claim · model-written summary
Priming reduced stem and root disease incidence.
- Taxon
- Chickpea ( Cicer arietinum )Cicer arietinume1
- Treatment
- Priminge0
- Outcome
- incidence of stem and root diseasese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Priming also reduced the incidence of stem and root diseases”
e1“Chickpea ( Cicer arietinum )”
Claim · model-written summary
Priming increased nodulation by native rhizobia.
- Taxon
- Chickpea ( Cicer arietinum )Cicer arietinume1
- Treatment
- Priminge0
- Interactor
- native rhizobiae0symbiont
- Outcome
- nodulatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Priming also reduced the incidence of stem and root diseases, and increased nodulation by native rhizobia”
e1“Chickpea ( Cicer arietinum )”
Claim · model-written summary
The authors attributed yield response mainly to rapid seedling establishment and stress escape.
- Taxon
- Chickpea ( Cicer arietinum )Cicer arietinume1
- Treatment
- priminge0
- Outcome
- priming responsee0
- Qualifier
- rapid seedling establishment, with higher plant stand and earlier crop maturity allowing escape from end-of-season stressese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The priming response was attributed mainly to rapid seedling establishment, with higher plant stand and earlier crop maturity allowing escape from end-of-season stresses”
e1“Chickpea ( Cicer arietinum )”
Claim · model-written summary
The authors conclude seed priming can substantially increase chickpea yields to remunerative levels.
- Taxon
- Chickpea ( Cicer arietinum )Cicer arietinume1
- Outcome
- increase chickpea yields to remunerative levelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This simple technology can substantially increase chickpea yields to remunerative levels for the resource-poor farmers in this difficult environment”
e1“Chickpea ( Cicer arietinum )”
Claim · model-written summary
The authors suggest priming could catalyze other technologies for profitable post-rainy-season cultivation.
- Taxon
- Chickpea ( Cicer arietinum )Cicer arietinume1
- Outcome
- introduction of further technologies that will permit reliable and profitable cultivation of post-rainy-season cropse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this technology can act as a catalyst for the introduction of further technologies that will permit reliable and profitable cultivation of post-rainy-season crops”
e1“Chickpea ( Cicer arietinum )”
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