Claim · model-written summary
Contact placement was slightly inferior to sideband placement at high rates in 1952.
- Taxon
- potatoes
Solanum tuberosumt0 - Treatment
- contact placemente0
- Outcome
- slightly inferiore0
- Direction
- slightly inferiore0
- Qualifier
- high ratese0
- Comparator
- sideband placemente0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1952 contact placement was slightly superior to sideband placement at low rates of fertilizer and slightly inferior at high rates.”
t0“potatoes”
Title
Placement of fertilizers for potatoes planted by machines
G. W. Cooke; M. V. Jackson; F. V. Widdowson The Journal of Agricultural Science 1954. doi:10.1017/s0021859600044804
Other claims from this paper (19)
- Intervention effect Sideband placement yielded more potatoes than broadcast fertilizer.
- Intervention effect Contact placement yielded more potatoes than broadcast fertilizer.
- Observation Broadcast fertilizer yielded similarly to half to two thirds as much placed fertilizer.
- Intervention effect Placement increased potato yield by about 1 ton/acre on average versus broadcasting.
- Observation Placement advantages were greatest at low fertilizer rates.
- Intervention effect Deep cultivation of broadcast fertilizer yielded slightly less than late broadcasting.
- Intervention effect Surface-band fertilizer ahead of seed shoes yielded similarly to seedbed broadcast fertilizer.
- Observation Seedbed broadcasting or placement before seed shoes concentrated fertilizer above the seed in typical planting conditions.
- Intervention effect Contact placement outyielded sideband placement at both rates in 1951.
- Intervention effect Contact placement slightly outyielded sideband placement at low fertilizer rates in 1952.
- Intervention effect Heavy contact dressing delayed potato emergence by 10–14 days in most experiments.
- Observation Early crop growth was poor after contact placement but most crops recovered and yielded well later.
- Observation Most crops recovered later and yielded well.
- Observation Contact placement damage risk is greatest on light soils, badly prepared seedbeds and in dry years.
- Recommendation The authors consider 10 to 12 cwt./acre ordinary-strength compound fertilizer safe in contact with seed.
- Recommendation For heavier dressings, the authors recommend splitting between seed contact and broadcasting.
- Observation Split applications were satisfactory in 1951 experiments.
- Recommendation The authors recommend suitable fertilizer attachments for mechanized potato planting.
- Recommendation The authors call for equipment placing heavy fertilizer dressings beside seed to maximize yield without damage.