Claim · model-written summary
The 1800 ppm foliar rate can decrease head size and percent salable heads of lettuce.
- Taxon
- Lactuca sativa
Lactuca sativae0 - Treatment
- 1800 ppm foliar ratee5
- Outcome
- head size and percent salable headse5
- Direction
- decreasee5
- Qualifier
- cane5
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lactuca sativa L.”
e5“The 1800 ppm foliar rate is undesirable since it can decrease head size and percent salable heads”
Title
B. A. Kratky; H. Y. Mishima Journal of the American Society for Horticultural Science 1981. doi:10.21273/jashs.106.1.3
Other claims from this paper (11)
- Recommendation The recommended foliar range for lettuce transplants is 200-600 ppm combined with preplant incorporation of 0-8 g/liter of medium.
- Observation The 200 ppm foliar treatment required 4-8 g/liter of medium-incorporated fertilizer.
- Observation The 600 ppm foliar treatment required 0-4 g/liter of preplant fertilizer.
- Intervention effect The 0 foliar treatment decreased seedling weight, head firmness and head weight of lettuce.
- Intervention effect The 1800 ppm foliar rate can cause soft lettuce seedlings.
- Intervention effect The highest preplant rates caused excess salinity in the growing medium.
- Intervention effect The highest preplant rates delayed lettuce seed germination.
- Intervention effect The highest preplant rates reduced lettuce seedling fresh weight.
- Intervention effect Total salable weight and average head weight were not influenced by the 6 media tested.
- Intervention effect A lower seedling fresh weight occurred with 1 medium in the first experiment.
- Association Large differences among treatments at the seedling stage moderated by harvest.