Claim · model-written summary
Sewage sludge did not significantly change soybean seed yield.
- Taxon
- soybean
Glycine maxe0 - Treatment
- sewage sludgee0
- Outcome
- soybean seed yielde0
- Direction
- did not significantly influencee0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Adding sewage sludge did not significantly influence soybean seed yield.”
Title
G. E. Ham; R. H. Dowdy Agronomy Journal 1978. doi:10.2134/agronj1978.00021962007000020026x
Other claims from this paper (14)
- Intervention effect Sludge increased seed concentrations of N, P and K.
- Intervention effect Sludge increased seed Zn and Cd concentrations.
- Intervention effect Sludge decreased seed Fe concentration.
- Observation Total uptake of elements other than N, P, K, Ca, Mg and Fe was below 1 kg/ha.
- Intervention effect Cu salt increased soybean seed yield.
- Intervention effect Cr salt decreased soybean seed yield.
- Intervention effect Other metal salts did not influence soybean seed yield.
- Intervention effect Ni, Zn and Cd salts increased their respective concentrations in mature seed.
- Observation Leaf Zn reached 331 μg Zn/g at the highest sludge rate.
- Association Stem and husk Zn rose with sludge rate.
- Observation Seed Zn leveled off at 100 metric tons sludge/ha.
- Observation Cadmium and Cu concentrated in mature soybean leaf tissue.
- Recommendation The authors judged this sludge usable as a P source without yield reductions.
- Observation Sludge-borne metals did not greatly increase in seed.