Abstract
Tillers (commonly termed “suckers”) have lower overall yield contributions in corn (Zea mays L.) than in other Poaceae species. Current research evaluating the value of tillers in corn is scarce, particularly under water-limited conditions. This study aims to quantify relationships between tiller, main plant, and full (considering both tiller and main plant fractions) plant aboveground biomass and yields of corn under low plant density scenarios. Experiments were conducted in the 2019 growing season at three sites across Kansas (Garden City, Goodland, and Manhattan) evaluating two tiller-prone corn hybrids common in this region (P0805AM and P0657AM) at two plant densities (10,000 and 17,000 plants/a) with tiller maintenance (YT) or tiller removal (NT) at the V10 growth stage (tenth leaf). Treatments were set in a split-split-plot under a randomized complete block design (RCBD) with three replications. Results showed that full shoot dry biomass at maturity was neutrally or positively influenced by both tiller presence and an increase in plant density. Although yield from ears on the main plant (herein termed as “main plant yields”) can be negatively impacted by tillers, full yield of all portions of the plant (herein “full plant yields”) were neutrally or positively influenced by tiller contributions. Tiller yield variation in this study was influenced by tiller reproductive development, specifically tassel and lateral ear types. Responsible mechanisms and environmental factors influencing these development processes remain largely unknown, and this will be the focus of continuing studies.
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Claims 5
Claim · model-written summary
Tiller presence neutrally or positively influenced full shoot dry biomass at maturity.
- Taxon
- corn
Zea mays subsp. mayst0 - Treatment
- tiller presencee0
- Outcome
- full shoot dry biomass at maturitye0
- Direction
- neutrally or positivelye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“full shoot dry biomass at maturity was neutrally or positively influenced by both tiller presence and an increase in plant density”
t0“Corn”
Claim · model-written summary
Increasing plant density neutrally or positively influenced full shoot dry biomass at maturity.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- an increase in plant densitye0
- Outcome
- full shoot dry biomass at maturitye0
- Direction
- neutrally or positivelye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“full shoot dry biomass at maturity was neutrally or positively influenced by both tiller presence and an increase in plant density”
t0“Corn”
Claim · model-written summary
Tillers can negatively affect yield from ears on the main plant.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- tillerse0
- Outcome
- yield from ears on the main plante0
- Direction
- negatively impactede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield from ears on the main plant (herein termed as “main plant yields”) can be negatively impacted by tillers”
t0“Corn”
Claim · model-written summary
Tillers neutrally or positively influenced full plant yields.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- tiller contributionse0
- Outcome
- full yield of all portions of the plante0
- Direction
- neutrally or positivelye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“full yield of all portions of the plant (herein “full plant yields”) were neutrally or positively influenced by tiller contributions”
t0“Corn”
Claim · model-written summary
Tiller yield variation was influenced by tassel and lateral ear reproductive development.
- Taxon
- cornZea mays subsp. mayst0
- Organ / stage
- tassel and lateral ear typese0
- Outcome
- Tiller yield variatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tiller yield variation in this study was influenced by tiller reproductive development, specifically tassel and lateral ear types”
t0“Corn”
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tillage · yield · Zea mays (maize)Positive and negative results
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