Abstract
The objective of this study was to evaluate the agronomic characteristics, bromatological-chemical composition and digestibility of 11 corn cultivars (Zea mays) harvested at two cutting heights. Cultivars D 766, D 657, D 1000, P 3021, P 3041, C 805, C 333, AG 5011, FO 01, CO 9621 and BR 205 were evaluated when they were harvested 5 cm above ground (low) and 5 cm below the insertion of the first ear (high). The experiment was designed as random blocks, with three replicates, arranged in an 11 x 2 factorial scheme. Cultivars presented similar productions of forage dry matter and grains. Percentages of stalk, leaf, straw, cob and kernel fractions were different among cultivars, as well as dry matter content of the whole plant at harvest. Considering the whole plant, only the contents of gross energy, nitrogen in neutral detergent fiber, and in vitro neutral and acid detergent fiber digestibility did not differ among cultivars. Increase on the cutting height improved forage quality due to the reduction of stalk and leaf fractions and contents of cell wall constituents.
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Claims 9
Claim · model-written summary
Cultivars produced similar amounts of forage dry matter and grain.
- Taxon
- corn
Zea mays subsp. mayst0 - Material
- Cultivarse0
- Outcome
- productions of forage dry matter and grainse0
- Direction
- similare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultivars presented similar productions of forage dry matter and grains”
t0“corn cultivars”
Claim · model-written summary
Stalk, leaf and straw fractions differed among cultivars.
Verbatim
e0“Percentages of stalk, leaf, straw, cob and kernel fractions were different among cultivars”
Claim · model-written summary
Cob and kernel fractions differed among cultivars.
- Taxon
- cornZea mays subsp. mayst0
- Outcome
- cob and kernel fractionse0
- Direction
- differente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Percentages of stalk, leaf, straw, cob and kernel fractions were different among cultivars”
t0“corn cultivars”
Claim · model-written summary
Whole-plant dry matter content at harvest differed among cultivars.
- Taxon
- cornZea mays subsp. mayst0
- Outcome
- dry matter content of the whole plant at harveste0
- Direction
- differente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dry matter content of the whole plant at harvest”
e1“were different among cultivars”
t0“corn cultivars”
Claim · model-written summary
Whole-plant gross energy and neutral-detergent-fiber nitrogen did not differ among cultivars.
- Taxon
- cornZea mays subsp. mayst0
- Outcome
- contents of gross energy, nitrogen in neutral detergent fibere0
- Direction
- did not differe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only the contents of gross energy, nitrogen in neutral detergent fiber, and in vitro neutral and acid detergent fiber digestibility did not differ among cultivars”
t0“corn cultivars”
Claim · model-written summary
In vitro neutral and acid detergent fiber digestibility did not differ among cultivars.
- Taxon
- cornZea mays subsp. mayst0
- Outcome
- in vitro neutral and acid detergent fiber digestibilitye0
- Direction
- did not differe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in vitro neutral and acid detergent fiber digestibility did not differ among cultivars”
t0“corn cultivars”
Claim · model-written summary
Increasing cutting height reduced stalk and leaf fractions.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- Increase on the cutting heighte0
- Outcome
- stalk and leaf fractionse0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increase on the cutting height improved forage quality due to the reduction of stalk and leaf fractions and contents of cell wall constituents”
t0“corn cultivars”
Claim · model-written summary
Increasing cutting height reduced cell-wall constituents.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- Increase on the cutting heighte0
- Outcome
- contents of cell wall constituentse0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increase on the cutting height improved forage quality due to the reduction of stalk and leaf fractions and contents of cell wall constituents”
t0“corn cultivars”
Claim · model-written summary
Increasing cutting height improved forage quality.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- Increase on the cutting heighte0
- Outcome
- forage qualitye0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increase on the cutting height improved forage quality”
t0“corn cultivars”
The same questions in other papers
pruning · quality: grain · Zea mays (maize)Positive and negative results
11 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- positive
- no effect
11 papers more in this group
See all 15 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.