Claim · model-written summary
High N rates (1800 and 1440 kg/ha) broadcast and disked in during spring decreased soybean yield, attributed to germination and seedling injury.
- Taxon
- Soybean
Glycine maxt0 - Treatment
- High rates of N (1800 and 1440 kg/ha), broadcast and disked‐in in the springe1
- Outcome
- yielde1
- Direction
- decreasede1
- Qualifier
- due to germination and seedling injurye1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“High rates of N (1800 and 1440 kg/ha), broadcast and disked‐in in the spring, decreased yield due to germination and seedling injury”
t0“Soybean Yields with Direct and Residual Nitrogen Fertilization1”
Title
Soybean Yields with Direct and Residual Nitrogen Fertilization1
L. F. Welch; L. V. Boone; C. G. Chambliss; et al. Agronomy Journal 1973. doi:10.2134/agronj1973.00021962006500040007x
Other claims from this paper (7)
- Intervention effect Nitrogen at rates up to 360 kg/ha added for the preceding year's corn had no effect on soybean yields.
- Intervention effect Organic N sources such as manure or alfalfa did not increase soybean yields.
- Intervention effect Combinations of organic and inorganic N sources did not increase soybean yields.
- Intervention effect Fertilizer N added for soybean as plow-down, disked-in, and side-dressed at early flowering and at pod filling did not increase yields.
- Intervention effect Nitrogen added for soybeans planted on four dates did not increase yields.
- Intervention effect Across all studies, yields were significantly increased by N fertilizer in only 3 of 133 instances, at high, uneconomical N rates.
- Mechanism The authors conclude that N available to the plant is not the factor that presently limits soybean yields in Illinois.