Abstract
This field study was conducted to assess the effect of seed priming and seed size on emergence, growth and productivity of wheat under conventional and conservation tillage during winter season 2012-2013. Seeds of wheat cultivar Punjab-2011 were separated into small sized (1000 grain weight = 22.5 g) and bold sized (1000 grain weight = 44.4 g) seeds by winnowing. Both bold and small sized seeds were soaked in aerated solution of CaCl2 (s -1.25 MPa; osmopriming) for 24 h while untreated (dry) seeds were taken as control. Osmoprimed and dry seeds of both sizes were sown under conventional and conservation (zero tillage) tillage practices. Results indicated that wheat sown under conventional tillage observed quick, uniform and better early stand establishment compared with zero tilled wheat. However, seed primed with CaCl2 significantly lowered the days to start emergence, mean emergence time and improved final emergence count compared with dry seeds sown, particularly of zero tilled wheat. Zero tilled crop observed a significant cut in leaf area index (LAI), crop growth rate (CGR) and net assimilation (NAR), while bold seed size and osmopriming improved the LAI, CGR and NAR under both tillage practices, zero tilled wheat in particular. Moreover, zero tilled wheat observed a significant yield penalty due to significant increase in yield related traits; however, osmopriming and bold seed size improved wheat productivity due to substantial expansion in yield related traits under conventional and zero tillage, zero tillage in particular, practices. In conclusion, bold sized seed osmoprimed with CaCl2 was better able to produce higher yield of conventionally tilled and zero tilled wheat.
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Claims 9
Claim · model-written summary
Conventional tillage produced quicker, more uniform and better early wheat stands than zero tillage.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- conventional tillagee0
- Outcome
- early stand establishmente0
- Direction
- quick, uniform and bettere0
- Comparator
- zero tilled wheate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat sown under conventional tillage observed quick, uniform and better early stand establishment compared with zero tilled wheat”
Claim · model-written summary
CaCl2 priming significantly reduced days to emergence and mean emergence time relative to dry seed.
- Treatment
- seed primed with CaCl2e0
- Outcome
- days to start emergence, mean emergence timee0
- Direction
- lowerede0
- Comparator
- dry seedse0
Not reportedTaxon
Verbatim
e0“seed primed with CaCl2 significantly lowered the days to start emergence, mean emergence time and improved final emergence count compared with dry seeds sown”
Claim · model-written summary
CaCl2 priming improved final emergence count relative to dry seed.
- Treatment
- seed primed with CaCl2e0
- Outcome
- final emergence counte0
- Direction
- improvede0
- Comparator
- dry seedse0
Not reportedTaxon
Verbatim
e0“seed primed with CaCl2 significantly lowered the days to start emergence, mean emergence time and improved final emergence count compared with dry seeds sown”
Claim · model-written summary
Zero tillage significantly reduced LAI, CGR and NAR.
- Taxon
- crope0
- Treatment
- Zero tillede0
- Outcome
- leaf area index (LAI), crop growth rate (CGR) and net assimilation (NAR)e0
- Direction
- cute0
Not reportedComparator
Verbatim
e0“Zero tilled crop observed a significant cut in leaf area index (LAI), crop growth rate (CGR) and net assimilation (NAR)”
Claim · model-written summary
Bold seeds improved LAI, CGR and NAR under both tillage practices.
Not reportedTaxonComparator
Verbatim
e0“bold seed size and osmopriming improved the LAI, CGR and NAR under both tillage practices”
Claim · model-written summary
Osmopriming improved LAI, CGR and NAR under both tillage practices.
Not reportedTaxonComparator
Verbatim
e0“bold seed size and osmopriming improved the LAI, CGR and NAR under both tillage practices”
Claim · model-written summary
Zero tillage significantly reduced wheat yield.
- Taxon
- wheatTriticum aestivume0
- Treatment
- zero tillede0
- Outcome
- yielde0
- Direction
- penaltye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“zero tilled wheat observed a significant yield penalty”
Claim · model-written summary
Osmopriming improved wheat productivity under both tillage practices.
- Taxon
- wheatTriticum aestivume0
- Treatment
- osmopriminge0
- Outcome
- wheat productivitye0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“osmopriming and bold seed size improved wheat productivity due to substantial expansion in yield related traits under conventional and zero tillage”
Claim · model-written summary
Bold seeds improved wheat productivity under both tillage practices.
- Taxon
- wheatTriticum aestivume0
- Treatment
- bold seed sizee0
- Outcome
- wheat productivitye0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“osmopriming and bold seed size improved wheat productivity due to substantial expansion in yield related traits under conventional and zero tillage”
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