Abstract
Abstract An established sward of red clover cv. Hungaropoly sown pure received approx. 30 kg P ha ‐1 and 200 kg K ha ‐1 each year for 3 successive years. The P and K were applied either as cattle slurry, inorganic fertilizer or combinations of these. Treatments were applied either in spring or after the first harvest. There were a total of six treatments and these were harvested three times each year. The average yields of total herbage DM over all the treatments in the first, second and third years were 15·2, 14·2 and 14·2 t ha ‐1 respectively and the various treatments had no significant effect on the overall yields. Treatments had a significnt effect on red clover DM yields and percentage red clover in one harvest in each of the first 2 years and all three in the third year. Yields of red clover were lower and grass higher in treatments receiving cattle slurry only. On this treatment there was a total yield of 23·2 t ha ‐1 red clover DM in the 3 years compared with 30·2 t ha ‐1 on the inorganic fertilizer treatments. However, by applying P and K fertilizer in the spring, followed by cattle slurry after the first harvest, it was possible to maintain a high proportion of red clover in the sward and to produce yields of red clover DM similar to those on the inorganic fertilizer treatments.
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Claims 5
Claim · model-written summary
Fertilizer treatments did not significantly affect overall herbage yields.
Not reportedTaxonComparator
Verbatim
e0“the various treatments had no significant effect on the overall yields”
Claim · model-written summary
Treatments significantly affected red clover dry matter yield and proportion.
- Taxon
- red clover
Trifolium pratensee0 - Treatment
- Treatmentse0
- Outcome
- red clover DM yields and percentage red clovere0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatments had a significnt effect on red clover DM yields and percentage red clover”
Claim · model-written summary
Cattle slurry alone lowered red clover yield relative to inorganic fertilizer.
- Taxon
- red cloverTrifolium pratensee0
- Treatment
- cattle slurry onlye0
- Outcome
- Yields of red clovere0
- Direction
- lowere0
- Value
- 23·2 t ha ‐1e0
- Qualifier
- 30·2 t ha ‐1e0
- Comparator
- inorganic fertilizer treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields of red clover were lower and grass higher in treatments receiving cattle slurry only. On this treatment there was a total yield of 23·2 t ha ‐1 red clover DM in the 3 years compared with 30·2 t ha ‐1 on the inorganic fertilizer treatments”
Claim · model-written summary
Grass yield was higher under cattle slurry alone.
Not reportedComparator
Verbatim
e0“Yields of red clover were lower and grass higher in treatments receiving cattle slurry only”
Claim · model-written summary
Spring mineral fertilizer followed by slurry maintained a high clover proportion and yields similar to inorganic fertilizer.
- Taxon
- red cloverTrifolium pratensee0
- Treatment
- P and K fertilizer in the spring, followed by cattle slurry after the first harveste0
- Outcome
- yields of red clover DMe0
- Direction
- similare0
- Comparator
- inorganic fertilizer treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“by applying P and K fertilizer in the spring, followed by cattle slurry after the first harvest, it was possible to maintain a high proportion of red clover in the sward and to produce yields of red clover DM similar to those on the inorganic fertilizer treatments”
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