Claim · model-written summary
Potassium application significantly decreased crude protein concentration in 2002.
- Treatment
- K applicatione0
- Outcome
- Crude protein (CP) concentrationse0
- Direction
- decreasee0
- Qualifier
- in 2002e0
SorghumNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Crude protein (CP) concentrations showed a significant decrease with K application in 2002”
e7“brown midrib (BMR) sorghum ( Sorghum bicolor (L.) Moench.) × sudangrass ( Sorghum sudanense Piper) hybrids (SxS)”
Title
Q. M. Ketterings; G. Godwin; J. H. Cherney; et al. Journal of Agronomy and Crop Science 2005. doi:10.1111/j.1439-037x.2004.00144.x
Other claims from this paper (13)
- Intervention effect Potassium application did not affect dry matter yields in either year.
- Intervention effect Across two years, potassium addition significantly increased NDF.
- Intervention effect The yearly NDF increases with potassium addition were not significant.
- Intervention effect Potassium application did not affect NDF digestibility.
- Intervention effect Crude protein concentrations showed a similar but nonsignificant trend in 2003.
- Association NDF and crude protein changes did not significantly affect forage quality measured as milk production per megagram of silage.
- Intervention effect Potassium application increased forage potassium concentration up to 13 mg K kg −1 dry matter in the first cut of 2003.
- Intervention effect Potassium addition decreased forage calcium concentration.
- Intervention effect Potassium addition decreased forage magnesium concentration.
- Observation Without potassium addition, forage K concentration fell from 23 g kg −1 to 15 g kg −1 across the study.
- Observation All second-cut forage was low in K unless 224 kg K 2 O ha −1 cut −1 had been added.
- Observation First-cut forage was suitable only without added K.
- Recommendation The authors recommend harvesting low-K BMR SxS without additional K from initially high-K soils, without dry-matter yield loss.