Abstract
Grassland provides high nutritive forages for ruminants being a main factor in feeding beef and especially dairy cattle. Changes in precipitation patterns, asides rising temperature and CO2 concentration, will severely affect forage species and modify the nutritive value, and this in turn will also impact animal performance. The aim of this study was to evaluate the influence of water stress on agronomic parameters and the nutritive value of orchard grass (Dactylis glomerata L.) in mountainous permanent grassland, under i) ambient (C0T0) and ii) future (C2T2) climate conditions with increased temperature (+3 °C) and elevated CO2 (+300 ppm). To simulate water stress, a drought experiment was conducted during the experimental period. The experiment took place at the Agricultural Research and Education Centre (AREC) Raumberg-Gumpenstein in Styria (Austria) from 2016 to 2018. Experimental plots were harvested in a 3-cut-system and plant samples were analysed for development stage, leaf weight ratio (LWR) and tiller height and weight. The nutritive value was determined by analysing crude protein (CP) and its fractionation, water-soluble carbohydrates (WSC), NDForg, ADForg, metabolizable energy (ME) and digestibility of organic matter (DOM), among others. The results showed that water stress did not alter the development stage of orchard grass, but decreased tiller height and weight under ambient climate conditions. Furthermore, an increase in ME and DOM, and a decrease in NDForg and ADForg occurred under water stress. In combination with elevated temperature and CO2, water stress improved CP, WSC, ME and DOM, and decreased NDForg and ADForg. Conclusively, water stress improved specific nutritive parameters but, in some circumstances, caused a decline in biomass production.
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Claims 8
Claim · model-written summary
Water stress did not alter the development stage of orchard grass.
- Taxon
- orchard grass
.jpg?width=60)
Dactylis glomeratae0 - Treatment
- water stresse0
- Outcome
- development stagee0
- Direction
- did not altere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The results showed that water stress did not alter the development stage of orchard grass, but decreased tiller height and weight under ambient climate conditions”
Claim · model-written summary
Water stress decreased tiller height and weight under ambient climate conditions.
- Taxon
- orchard grassDactylis glomeratae0
- Treatment
- water stresse0
- Outcome
- tiller height and weighte0
- Direction
- decreasede0
- Setting
- ambient climate conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that water stress did not alter the development stage of orchard grass, but decreased tiller height and weight under ambient climate conditions”
Claim · model-written summary
Water stress increased ME and DOM.
- Taxon
- orchard grassDactylis glomeratae4
- Treatment
- water stresse1
- Outcome
- ME and DOMe1
- Direction
- an increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Furthermore, an increase in ME and DOM, and a decrease in NDForg and ADForg occurred under water stress”
e4“nutritive value of orchard grass (Dactylis glomerata L.)”
Claim · model-written summary
Water stress decreased NDForg and ADForg.
- Taxon
- orchard grassDactylis glomeratae4
- Treatment
- water stresse1
- Outcome
- NDForg and ADForge1
- Direction
- a decreasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Furthermore, an increase in ME and DOM, and a decrease in NDForg and ADForg occurred under water stress”
e4“nutritive value of orchard grass (Dactylis glomerata L.)”
Claim · model-written summary
Under elevated temperature and CO2, water stress improved CP and WSC.
- Taxon
- orchard grassDactylis glomeratae4
- Treatment
- water stresse2
- Outcome
- CP, WSCe2
- Direction
- improvede2
- Setting
- elevated temperature and CO2e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“In combination with elevated temperature and CO2, water stress improved CP, WSC, ME and DOM, and decreased NDForg and ADForg”
e4“nutritive value of orchard grass (Dactylis glomerata L.)”
Claim · model-written summary
Under elevated temperature and CO2, water stress improved ME and DOM.
- Taxon
- orchard grassDactylis glomeratae4
- Treatment
- water stresse2
- Outcome
- ME and DOMe2
- Direction
- improvede2
- Setting
- elevated temperature and CO2e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“In combination with elevated temperature and CO2, water stress improved CP, WSC, ME and DOM, and decreased NDForg and ADForg”
e4“nutritive value of orchard grass (Dactylis glomerata L.)”
Claim · model-written summary
Under elevated temperature and CO2, water stress decreased NDForg and ADForg.
- Taxon
- orchard grassDactylis glomeratae4
- Treatment
- water stresse2
- Outcome
- NDForg and ADForge2
- Direction
- decreasede2
- Setting
- elevated temperature and CO2e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“In combination with elevated temperature and CO2, water stress improved CP, WSC, ME and DOM, and decreased NDForg and ADForg”
e4“nutritive value of orchard grass (Dactylis glomerata L.)”
Claim · model-written summary
Water stress caused a decline in biomass production in some circumstances.
- Taxon
- orchard grassDactylis glomeratae4
- Treatment
- water stresse3
- Outcome
- biomass productione3
- Direction
- a declinee3
- Qualifier
- in some circumstancese3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Conclusively, water stress improved specific nutritive parameters but, in some circumstances, caused a decline in biomass production”
e4“nutritive value of orchard grass (Dactylis glomerata L.)”
The same questions in other papers
drought · growth · Dactylis glomerata (cocksfoot)Positive and negative results
3 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
3 papers more in this group
See all 7 papers →drought · yield · Dactylis glomerata (cocksfoot)Positive and negative results
8 papers in the same direction as this paper · 2 in the opposite direction
- negative
- positive
- positive
7 papers more in this group
See all 11 papers →drought · quality: grain · Dactylis glomerata (cocksfoot)Results agree
1 paper in the same direction as this paper
- positive
drought · quality: protein · Dactylis glomerata (cocksfoot)Results agree
1 paper in the same direction as this paper
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.