Claim · model-written summary
In Expt 1 there was a strong suggestion that the change from impermeability to permeability was reversible.
MedicagoNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Three experiments which measured seed production and seed survival of annual medics ( Medicago spp.) were conducted at Tel Hadya in north Syria”
e1“In Expt 1 there was a strong suggestion that the change from impermeability to permeability was reversible”
Title
Seed production and seed survival under grazing of annual medics (Medicago spp.) in north Syria
P. S. Cocks The Journal of Agricultural Science 1988. doi:10.1017/s0021859600082009
Other claims from this paper (15)
- Intervention effect Seed production of annual medics was greatest at sowing rates of 20–40 kg/ha.
- Association Native medic species produced more seed (up to 1000 kg/ha) than cultivars (less than 500 kg/ha).
- Association In the late-flowering ecotype of M. noeana, the native-versus-cultivar difference in seed production was not significant.
- Recommendation Seed yields of 500–1000 kg/ha were considered sufficient to perpetuate the pastures.
- Association Seed yield in all ecotypes was closely related to the number of pods.
- Observation Up to 95% of flowers failed to produce mature pods in Expt 2.
- Intervention effect Flowers were more likely to mature at a high sowing rate (256 kg/ha).
- Intervention effect Flower production was greatest at sowing rates of less than 30 kg/ha.
- Intervention effect Flowers produced early in the season (before mid-April) were far more likely to give mature pods than late-produced flowers.
- Association In late October, seeds of native medic species were less permeable (10%) than those of cultivars (30%).
- Association Seed permeability of native medic species was similar to that of cultivars in Australia.
- Observation Seeds tended to gain permeability in autumn.
- Intervention effect Ewes grazing mature pods gained weight, apparently as long as pod availability exceeded 10 kg/ha.
- Observation The condition of ewes was not a good guide to an appropriate stocking rate for pasture persistence.
- Recommendation Farmers will need other methods to assist grazing management of medic pastures.