Claim · model-written summary
Initial requirements for vigorous white clover growth include 9 to 12 cwt superphosphate equivalent phosphate.
- Taxon
- white clover
Trifolium repense0 - Treatment
- superphosphatee0
- Outcome
- initial requirements for vigorous growthe0
- Value
- 9 to 12 cwte0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingDirectionQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield responses indicated initial requirements for vigorous growth of white clover of at least 30 cwt agricultural limestone per acre, phosphate equivalent to 9 to 12 cwt superphosphate, 3 to 4 cwt potassium chloride, about 20 lb elemental sulphur, 5 lb each of copper and zinc sulphates, and 1 oz sodium molybdate”
Title
Nussbaum Jl 1970
Other claims from this paper (19)
- Recommendation Initial requirements for vigorous white clover growth include at least 30 cwt agricultural limestone per acre.
- Recommendation Initial requirements for vigorous white clover growth include 3 to 4 cwt potassium chloride.
- Recommendation Initial requirements for vigorous white clover growth include about 20 lb elemental sulphur.
- Recommendation Initial requirements for vigorous white clover growth include 5 lb each of copper and zinc sulphates and 1 oz sodium molybdate.
- Recommendation Maintenance needs include about 5 cwt limestone per acre per year.
- Recommendation Maintenance needs include 6 cwt superphosphate per acre.
- Recommendation Maintenance needs include 3 to 4 cwt potassium chloride and 20 lb elemental sulphur per acre.
- Mechanism Low retentive capacity of this soil, combined with high rainfall, is associated with rapid nutrient leaching and high maintenance needs.
- Intervention effect Leaf N concentrations of white clover increased with monocalcium phosphate and lime applications.
- Intervention effect Leaf N concentrations of white clover increased with sulphur or sulphate applications.
- Intervention effect Leaf N concentrations of white clover increased with molybdenum applications.
- Method / resource Nutrient-to-N ratios were superior to absolute nutrient concentrations for diagnosing white clover nutrient status.
- Association Yield response to P occurred when the N:P ratio in white clover leaves was above about 14:1.
- Association An N:S ratio in clover leaves above about 18:1 indicated sulphur deficiency.
- Association Yield responses to copper of more than 100 percent were associated with copper-deficient white clover.
- Observation Copper-deficient white clover plants had mean leaf Cu of 2.0 ppm and N:Cu ratios above 11,000:1.
- Observation Slightly higher Cu levels were found in some of the most stunted copper-deficient white clover plants.
- Association Yield responses to zinc averaging 32 percent were associated with zinc-deficient white clover.
- Observation Zinc-deficient white clover had mean leaf Zn of 15 ppm, with P:Zn ratios above 200:1 and N:Zn ratios above 2,200:1.