Claim · model-written summary
Subsoiling significantly increased leaf N concentration above conventional tillage in 1979.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- Subsoilinge6
- Outcome
- leaf N concentratione6
- Direction
- increasede6
- Qualifier
- 1979e6
- Comparator
- conventional tillagee6
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“may limit corn ( Zea mays L.) yields”
e6“Subsoiling significantly increased leaf N concentration above that obtained from conventional tillage in 1979”
Title
Effects of Deep Tillage on N Response by Corn on a Sandy Coastal Plain Soil1
H. F. Chancy; E. J. Kamprath Agronomy Journal 1982. doi:10.2134/agronj1982.00021962007400040016x
Other claims from this paper (15)
- Intervention effect Use of NI in 1978 increased the share of NH4 in total inorganic soil N at 0 to 15 cm depth.
- Intervention effect Use of NI did not significantly increase total inorganic soil N content at any depth.
- Intervention effect Nitrapyrin had no significant effect on inhibition of nitrification in the top 45 cm depth in 1979.
- Observation Inorganic soil N moved below the tillage pan into the subsoil by leaching rains.
- Mechanism Ineffective nitrification suppression by NI in 1979 was probably due to differential movement of NH4 and NI.
- Intervention effect Chisel-plowing increased corn stover dry matter production above conventional tillage in both seasons.
- Intervention effect Subsoiling increased corn stover dry matter production above conventional tillage in both seasons.
- Intervention effect Subsoiling increased corn yields above conventional tillage.
- Intervention effect Chisel-plowing increased corn yields above conventional tillage.
- Intervention effect Subsoiling gave the highest corn yields.
- Mechanism Higher grain yields with deep tillage in 1978 were thought to result from utilization of moisture below the tillage pan.
- Mechanism Increased yields with deep tillage in 1979 were due to utilization of both moisture and N below the tillage pan.
- Intervention effect Corn yields in 1978 were significantly higher with 168 kg N/ha than with 112 kg N/ha.
- Intervention effect Corn yields in 1979 did not differ significantly between 112 and 168 kg N/ha.
- Intervention effect Nitrapyrin had a positive effect on corn yields only with the chisel-plow treatment.