Abstract
Whole plant samples were obtained at grain maturity from nine wheat varieties. . Plants were physically separated into grain, stems, leaves and non-grain portions of the spike. Plant fractions were analyzed for in'vitro dry matter disappearance and chemical composition. Across varieties, grain and non-grain fractions averaged 41 and 59% respec tively, and varietal differences were observed in leaf and grain fractions as a percent of the entire plant. Differ ences due to variety were observed in in vitro dry matter disappearance and most chemical components of leaves and stems. In a field study conducted in Mexico, grain was esti mated to account for 37% of the dry matter produced and only 33% of the non-grain residue was recovered as baled straw. Separation of baled straw indicated a higher percentage of stems (60%) and lower content of non-grain spikes (12%) than was found in hand-harvested residue. The variation in physical and chemical composition and particularly in in vitro dry matter disappearance of leaves and stems among the small sample of wheat varieties investigated in this study indicates that quality differences in wheat straw do exist. It would appear that straws with improved feeding value could be identified or developed without necessarily decreasing grain yield.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
Grain averaged 41% across varieties.
Not reportedTaxon
Verbatim
e0“Across varieties, grain and non-grain fractions averaged 41 and 59% respec tively”
Claim · model-written summary
Non-grain fractions averaged 59% across varieties.
Not reportedTaxon
Verbatim
e0“Across varieties, grain and non-grain fractions averaged 41 and 59% respec tively”
Claim · model-written summary
Leaf and grain fractions differed among varieties.
Not reportedTaxonMaterial
Verbatim
e0“varietal differences were observed in leaf and grain fractions as a percent of the entire plant”
Claim · model-written summary
Leaf and stem digestibility and chemical components differed by variety.
- Material
- varietye0
- Outcome
- in vitro dry matter disappearance and most chemical components of leaves and stemse0
- Direction
- Differ encese0
Not reportedTaxon
Verbatim
e0“Differ ences due to variety were observed in in vitro dry matter disappearance and most chemical components of leaves and stems”
Claim · model-written summary
Grain accounted for an estimated 37% of produced dry matter in Mexico.
Not reportedTaxon
Verbatim
e0“In a field study conducted in Mexico, grain was esti mated to account for 37% of the dry matter produced”
Claim · model-written summary
Only 33% of non-grain residue was recovered as baled straw.
Not reportedTaxon
Verbatim
e0“only 33% of the non-grain residue was recovered as baled straw”
Claim · model-written summary
Baled straw had a higher stem proportion of 60% than hand-harvested residue.
- Organ / stage
- stemse0
- Outcome
- percentage of stemse0
- Direction
- highere0
- Value
- 60%e0
- Comparator
- hand-harvested residuee0
Not reportedTaxon
Verbatim
e0“a higher percentage of stems (60%) and lower content of non-grain spikes (12%) than was found in hand-harvested residue”
Claim · model-written summary
Baled straw had a lower non-grain spike content of 12% than hand-harvested residue.
- Organ / stage
- non-grain spikese0
- Outcome
- content of non-grain spikese0
- Direction
- lowere0
- Value
- 12%e0
- Comparator
- hand-harvested residuee0
Not reportedTaxon
Verbatim
e0“a higher percentage of stems (60%) and lower content of non-grain spikes (12%) than was found in hand-harvested residue”