Abstract
Abstract In the irrigated desert area of Imperial Valley, Calif., Cocorit 71 durum ( Triticum durum Desf.) was developing sufficient yellow berry to be penalized in price received by growers. The objectives of the study were to define the relationship between nitrate fertilizer timing, protein, and yellow berry in grain and to recommend the N fertilization program leading to the highest yield of low yellow berry grain yield. The study was conducted on a well drained vertic torriorthent of the entisol order. Plots were fertilized with 0, 135, 202, 270, or 404 kg/ha of N as ammonium nitrate in three treatments: all preplant (P), half preplant, and half at tillering (PT); and one‐third each at the preplant, tillering, and boot stages (PTB). Grain protein content differed significantly between treatments. Yellow berry decreased by 16.4 to 18.5% for each percentage increase in crude protein in the grain. PTB gave significantly higher protein in the grain than the other treatments. Protein content had significant linear correlation with shatter, lodging, average grain size, and grain density. PTB at 270 kg N/ha was the lowest N application that gave a consistently high yield, with less than 25% yellow berry. The wetter of two irrigation treatments had significantly less lodging in 1976, and longer straw, higher yield, and lower grain density in 1977. Effects were similar to the above in comparison treatments of ‘Mexicali 75’ durum and ‘Yecora Rojo’ ( Triticum aestivum L.), a hard red spring wheat. It was recommended that N fertilization be 90 kg/ha at preplant, again at tillering, and again at the boot stage.
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Claims 11
Claim · model-written summary
Grain protein content differed significantly among nitrogen treatments.
- Taxon
- Durum Wheat
Triticum turgidum subsp. durumt0 - Outcome
- Grain protein contente0
- Direction
- differede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain protein content differed significantly between treatments.”
t0“Durum Wheat”
Claim · model-written summary
Yellow berry declined by 16.4 to 18.5% for every percentage increase in grain crude protein.
- Taxon
- Durum WheatTriticum turgidum subsp. durumt0
- Material
- graine0
- Outcome
- Yellow berrye0
- Direction
- decreasede0
- Value
- 16.4 to 18.5%e0
- Qualifier
- for each percentage increase in crude protein in the graine0
Not reportedCompound
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yellow berry decreased by 16.4 to 18.5% for each percentage increase in crude protein in the grain.”
t0“Durum Wheat”
Claim · model-written summary
Three-way preplant, tillering and boot nitrogen application gave significantly higher grain protein than other treatments.
Not reportedTaxon
Verbatim
e0“PTB gave significantly higher protein in the grain than the other treatments.”
e1“one‐third each at the preplant, tillering, and boot stages (PTB)”
Claim · model-written summary
Grain protein correlated significantly with shatter, lodging, average grain size and grain density.
- Taxon
- Durum WheatTriticum turgidum subsp. durumt0
- Organ / stage
- graine0
- Outcome
- Protein contente0
- Qualifier
- significant linear correlation with shatter, lodging, average grain size, and grain densitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Protein content had significant linear correlation with shatter, lodging, average grain size, and grain density.”
t0“Durum Wheat”
Claim · model-written summary
PTB at 270 kg N/ha was the lowest N rate giving consistently high yield with less than 25% yellow berry.
- Taxon
- Durum WheatTriticum turgidum subsp. durumt0
- Treatment
- PTB at 270 kg N/hae0
- Outcome
- consistently high yield, with less than 25% yellow berrye0
- Direction
- highe0
- Value
- less than 25%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PTB at 270 kg N/ha was the lowest N application that gave a consistently high yield, with less than 25% yellow berry.”
t0“Durum Wheat”
Claim · model-written summary
Wetter irrigation significantly reduced lodging in 1976.
- Taxon
- Durum WheatTriticum turgidum subsp. durumt0
- Treatment
- wetter of two irrigation treatmentse0
- Outcome
- lodginge0
- Direction
- lesse0
- Qualifier
- in 1976e0
- Comparator
- two irrigation treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The wetter of two irrigation treatments had significantly less lodging in 1976”
t0“Durum Wheat”
Claim · model-written summary
Wetter irrigation increased straw length in 1977.
- Taxon
- Durum WheatTriticum turgidum subsp. durumt0
- Treatment
- wetter of two irrigation treatmentse0
- Outcome
- strawe0
- Direction
- longere0
- Qualifier
- in 1977e0
- Comparator
- two irrigation treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The wetter of two irrigation treatments had significantly less lodging in 1976, and longer straw, higher yield, and lower grain density in 1977.”
t0“Durum Wheat”
Claim · model-written summary
Wetter irrigation increased yield in 1977.
- Taxon
- Durum WheatTriticum turgidum subsp. durumt0
- Treatment
- wetter of two irrigation treatmentse0
- Outcome
- yielde0
- Direction
- highere0
- Qualifier
- in 1977e0
- Comparator
- two irrigation treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The wetter of two irrigation treatments had significantly less lodging in 1976, and longer straw, higher yield, and lower grain density in 1977.”
t0“Durum Wheat”
Claim · model-written summary
Wetter irrigation reduced grain density in 1977.
- Taxon
- Durum WheatTriticum turgidum subsp. durumt0
- Treatment
- wetter of two irrigation treatmentse0
- Outcome
- grain densitye0
- Direction
- lowere0
- Qualifier
- in 1977e0
- Comparator
- two irrigation treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The wetter of two irrigation treatments had significantly less lodging in 1976, and longer straw, higher yield, and lower grain density in 1977.”
t0“Durum Wheat”
Claim · model-written summary
Similar effects occurred in Mexicali 75 durum and Yecora Rojo spring wheat comparison treatments.
Verbatim
e0“Effects were similar to the above in comparison treatments of ‘Mexicali 75’ durum and ‘Yecora Rojo’ ( Triticum aestivum L.), a hard red spring wheat.”
Claim · model-written summary
The authors recommended applying 90 kg/ha nitrogen at each of preplant, tillering and boot stages.
- Taxon
- Durum WheatTriticum turgidum subsp. durumt0
- Outcome
- N fertilization be 90 kg/ha at preplant, again at tillering, and again at the boot stagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was recommended that N fertilization be 90 kg/ha at preplant, again at tillering, and again at the boot stage.”
t0“Durum Wheat”
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See all 39 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.