Claim · model-written summary
Applications of up to 10 kg borax/ha increased sunflower seed yields by 38%.
- Taxon
- Helianthus Annuus L.t0
- Treatment
- Applications of up to 10 kg borax/hae0
- Outcome
- seed yieldse0
- Direction
- increasede0
- Value
- 38%e0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingQualifier
Verbatim
t0“Helianthus Annuus L.”
e0“Applications of up to 10 kg borax/ha increased seed yields by 38%”
Title
Boron nutrition of dunflowers (Helianthus Annuus L.) on an Avalon medium sandy loam
F. P. C. Blamey 1976
Other claims from this paper (10)
- Observation Boron deficiency symptoms were observed and described in field-grown sunflowers.
- Intervention effect Applying 30 kg borax/ha gave no further yield increase in sunflower.
- Mechanism Boron played a role in the reproductive rather than the vegetative phase of sunflower growth.
- Recommendation The authors conclude that the B level in plant tissue could be used to establish the B nutrition status of sunflower.
- Observation In month-old sunflower seedlings 23 ppm B was considered deficient, 55 ppm adequate and 93 ppm possibly excessive for normal growth.
- Observation In the topmost mature leaf at flowering the deficient, adequate and possibly excessive B levels were 10, 47 and 103 ppm B respectively.
- Observation In the seed the corresponding B levels were 11, 16 and 18 ppm B.
- Intervention effect Soil amelioration with lime or gypsum decreased B concentration in the seedlings only where 30 kg borax/ha was applied.
- Intervention effect Soil amelioration had no effect on the B concentration in the topmost mature leaf.
- Intervention effect Liming slightly increased the B concentration in the seed.