Abstract
Abstract Estimates of leaf and internode weight, leaf appearance rate and shoot number are not appropriate for non‐destructive determinations of lucerne ( Medicago sativa ) growth rates as they are too variable. In an experiment involving four cultivars of lucerne harvested on two dates, a good relationship was found between linear measurements and the dry weight of shoots. An equation of the form W 1/3 = a.(dl*d2*length) 1/3 , where W = dry weight; dl, d2 = two diameters of the basal end of the shoot; length = maximum length of the shoot; and a = constant, gave a good fit to the data. The value of a varied between cultivars and sampling dates, and in the proportion of shoot harvested. The product of estimated shoot weight and shoot number can be used to give an estimate of plot yield.
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Claims 5
Claim · model-written summary
Leaf and internode weight, leaf appearance rate, and shoot number were too variable for non-destructive growth rate estimates.
- Taxon
- lucerne
Medicago sativae0 - Outcome
- non‐destructive determinations of lucerne ( Medicago sativa ) growth ratese0
- Comparator
- leaf and internode weight, leaf appearance rate and shoot numbere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Estimates of leaf and internode weight, leaf appearance rate and shoot number are not appropriate for non‐destructive determinations of lucerne ( Medicago sativa ) growth rates as they are too variable”
Claim · model-written summary
Linear shoot measurements had a good relationship with lucerne shoot dry weight.
- Taxon
- lucerneMedicago sativae1
- Outcome
- dry weight of shootse0
- Comparator
- linear measurementse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a good relationship was found between linear measurements and the dry weight of shoots”
e1“four cultivars of lucerne”
Claim · model-written summary
The stated shoot geometry equation fit the lucerne data well.
- Taxon
- lucerneMedicago sativae1
- Outcome
- good fit to the datae0
- Comparator
- W 1/3 = a.(dl*d2*length) 1/3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An equation of the form W 1/3 = a.(dl*d2*length) 1/3 , where W = dry weight; dl, d2 = two diameters of the basal end of the shoot; length = maximum length of the shoot; and a = constant, gave a good fit to the data”
e1“four cultivars of lucerne”
Claim · model-written summary
The equation constant varied by cultivar, sampling date, and the proportion of shoot harvested.
- Taxon
- lucerneMedicago sativae1
- Outcome
- value of ae0
- Direction
- variede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The value of a varied between cultivars and sampling dates, and in the proportion of shoot harvested”
e1“four cultivars of lucerne”
Claim · model-written summary
Estimated shoot weight multiplied by shoot number could estimate lucerne plot yield.
- Taxon
- lucerneMedicago sativae1
- Outcome
- estimate of plot yielde0
- Comparator
- estimated shoot weight and shoot numbere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The product of estimated shoot weight and shoot number can be used to give an estimate of plot yield”
e1“four cultivars of lucerne”