Abstract
1. The effects of cutting herbage to either 1 in. or 2½ in. from ground level were studied at varying cutting frequencies in two experiments on a perennial rye-grass/white-clover sward. In one of the experiments the frequency of cutting was decided by the stage of growth of the herbage, and in the other it was decided on a time basis where cutting was carried out at intervals of 2, 4 or 6 weeks throughout the growing season. 2. Greater yields of herbage dry matter were obtained by cutting to 1 in. rather than to 2½ in. at all cutting frequencies in both experiments. This effect did not vary significantly with frequency of cutting where cutting dates were decided by the stage of growth of the herbage. However, where the cutting frequency was decided on a time basis, close cutting gave a relatively greater yield increase compared with lax cutting where the herbage was cut every 2 weeks instead of every 4 or 6 weeks. 3. The results suggest that the practice of cutting at an average stage of growth in previous experiments probably had little or no influence on the effects recorded for the contrasting closeness of cutting treatments.
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Claims 4
Claim · model-written summary
Cutting to 1 inch gave greater herbage dry matter yield than cutting to 2½ inches at all frequencies in both experiments.
Verbatim
e0“Greater yields of herbage dry matter were obtained by cutting to 1 in. rather than to 2½ in. at all cutting frequencies in both experiments”
e1“perennial rye-grass/white-clover sward”
Claim · model-written summary
When cutting was based on growth stage, the yield effect of cutting height did not vary significantly with frequency.
Verbatim
e0“This effect did not vary significantly with frequency of cutting where cutting dates were decided by the stage of growth of the herbage”
e1“perennial rye-grass/white-clover sward”
Claim · model-written summary
Under time-based cutting, close cutting gave a relatively greater yield increase at two-week frequency than four- or six-week frequency.
Verbatim
e0“close cutting gave a relatively greater yield increase compared with lax cutting where the herbage was cut every 2 weeks instead of every 4 or 6 weeks”
e1“perennial rye-grass/white-clover sward”
Claim · model-written summary
The authors infer that cutting at an average growth stage probably had little or no influence on the effects of contrasting cutting heights in previous experiments.
Verbatim
e0“cutting at an average stage of growth in previous experiments probably had little or no influence on the effects recorded for the contrasting closeness of cutting treatments”
e1“perennial rye-grass/white-clover sward”
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