Abstract
The aim of the study was to compare yields and nutritional value of selected species and cultivars of forage grasses under the optimal moisture conditions and long-term drought stress. The regenerative capacity of plants after dehydration was also assessed. The pot experiment was conducted in years 2009–2010 in IUNG-PIB’s greenhouse in Puławy, Poland. Nine cultivars of four species: Dactylis glomerata (‘Amera’, ‘Minora’), Festuca pratensis (‘Skra’, ‘Fantazja’), Festulolium braunii (‘Felopa’, ‘Agula’, ‘Sulino’), and Lolium multiflorum (‘Gisel’, ‘Lotos’) were investigated in well-watered conditions (70% field water capacity – FWC) and under a long-term drought stress (40% FWC). The study showed that stress caused by soil moisture deficiency significantly reduced yields of D. glomerata, F. pratensis, F. braunii, and L. multiflorum. The total yield of dry matter under stress conditions was about 31% lower, compared to the performance achieved on the optimally moisturized treatment. The smallest reduction in dry matter yield under the conditions of water deficit was recorded for D. glomerata, which makes it the most resistant to stress, followed by F. pratensis. The resistance of F. braunii and L. multiflorum to stress was similar and significantly lower. There was a various response of different grasses to the water stress. On the basis of the value of the DSI (drought susceptibility index), the tested cultivars were ranked depending on the sensitivity to drought, starting with the most resistant cultivar: ‘Minora’, ‘Skra’, ‘Fantazja’, ‘Amera’, ‘Sulino’, ‘Agula’, ‘Gisel’, ‘Lotos’, and ‘Felopa’. The digestibility of dry matter and nutrient value of the grasses depended on both the level of soil moisture and grass species. Under the water stress, the digestibility and protein value increased compared to the control objects. Lolium multiflorum and F. braunii had the best nutritional value, while D. glomerata – the weakest.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 15
Claim · model-written summary
Soil moisture deficiency significantly reduced yields of Dactylis glomerata.
- Taxon
- D. glomerata
.jpg?width=60)
Dactylis glomeratae1 - Treatment
- soil moisture deficiencye1
- Outcome
- yieldse1
- Direction
- reducede1
- Comparator
- well-watered conditionse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e1“stress caused by soil moisture deficiency significantly reduced yields of D. glomerata, F. pratensis, F. braunii, and L. multiflorum”
e2“investigated in well-watered conditions (70% field water capacity – FWC) and under a long-term drought stress (40% FWC)”
Claim · model-written summary
Soil moisture deficiency significantly reduced yields of Festuca pratensis.
- Taxon
- F. pratensis
Festuca pratensise1 - Treatment
- soil moisture deficiencye1
- Outcome
- yieldse1
- Direction
- reducede1
- Comparator
- well-watered conditionse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“stress caused by soil moisture deficiency significantly reduced yields of D. glomerata, F. pratensis, F. braunii, and L. multiflorum”
e2“investigated in well-watered conditions (70% field water capacity – FWC) and under a long-term drought stress (40% FWC)”
Claim · model-written summary
Soil moisture deficiency significantly reduced yields of Festulolium braunii.
Verbatim
e1“stress caused by soil moisture deficiency significantly reduced yields of D. glomerata, F. pratensis, F. braunii, and L. multiflorum”
e2“investigated in well-watered conditions (70% field water capacity – FWC) and under a long-term drought stress (40% FWC)”
Claim · model-written summary
Soil moisture deficiency significantly reduced yields of Lolium multiflorum.
- Taxon
- L. multiflorum
Lolium multiflorume1 - Treatment
- soil moisture deficiencye1
- Outcome
- yieldse1
- Direction
- reducede1
- Comparator
- well-watered conditionse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“stress caused by soil moisture deficiency significantly reduced yields of D. glomerata, F. pratensis, F. braunii, and L. multiflorum”
e2“investigated in well-watered conditions (70% field water capacity – FWC) and under a long-term drought stress (40% FWC)”
Claim · model-written summary
Under long-term drought stress, total dry matter yield of forage grasses was about 31% lower than under optimal moisture.
Verbatim
e3“The total yield of dry matter under stress conditions was about 31% lower, compared to the performance achieved on the optimally moisturized treatment”
t0“forage grasses”
Claim · model-written summary
Dactylis glomerata had the smallest dry matter yield reduction under water deficit and was the most resistant to stress.
- Taxon
- D. glomerataDactylis glomeratae4
- Treatment
- water deficite4
- Outcome
- dry matter yielde4
- Direction
- smallest reductione4
- Qualifier
- most resistant to stresse4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The smallest reduction in dry matter yield under the conditions of water deficit was recorded for D. glomerata, which makes it the most resistant to stress, followed by F. pratensis”
Claim · model-written summary
Festuca pratensis ranked second in resistance to stress, followed by Dactylis glomerata.
- Taxon
- F. pratensisFestuca pratensise4
- Outcome
- resistant to stresse4
- Direction
- followed bye4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The smallest reduction in dry matter yield under the conditions of water deficit was recorded for D. glomerata, which makes it the most resistant to stress, followed by F. pratensis”
Claim · model-written summary
Resistance of Festulolium braunii to stress was significantly lower.
Verbatim
e5“The resistance of F. braunii and L. multiflorum to stress was similar and significantly lower”
Claim · model-written summary
Resistance of Lolium multiflorum to stress was significantly lower.
- Taxon
- L. multiflorumLolium multiflorume5
- Outcome
- resistance of F. braunii and L. multiflorum to stresse5
- Direction
- significantly lowere5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“The resistance of F. braunii and L. multiflorum to stress was similar and significantly lower”
Claim · model-written summary
The tested cultivars were ranked by drought sensitivity using the drought susceptibility index (DSI).
- Taxon
- forage grassest0
- Outcome
- the tested cultivars were ranked depending on the sensitivity to droughte6
- Qualifier
- On the basis of the value of the DSI (drought susceptibility index)e7
Not reportedDirection
Verbatim
e6“the tested cultivars were ranked depending on the sensitivity to drought”
e7“On the basis of the value of the DSI (drought susceptibility index)”
t0“forage grasses”
Claim · model-written summary
Digestibility of dry matter and nutrient value of grasses depended on soil moisture level and grass species.
Not reportedDirection
Verbatim
e1“The digestibility of dry matter and nutrient value of the grasses depended on both the level of soil moisture and grass species”
t0“forage grasses”
Claim · model-written summary
Under water stress, digestibility and protein value of forage grasses increased compared with control objects.
Verbatim
e1“Under the water stress, the digestibility and protein value increased compared to the control objects”
t0“forage grasses”
Claim · model-written summary
Lolium multiflorum had the best nutritional value of the grasses tested.
- Taxon
- Lolium multiflorumLolium multiflorume1
- Outcome
- nutritional valuee1
- Direction
- beste1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Lolium multiflorum and F. braunii had the best nutritional value, while D. glomerata – the weakest”
Claim · model-written summary
Festulolium braunii had the best nutritional value of the grasses tested.
Verbatim
e1“Lolium multiflorum and F. braunii had the best nutritional value, while D. glomerata – the weakest”
Claim · model-written summary
Dactylis glomerata had the weakest nutritional value of the grasses tested.
- Taxon
- D. glomerataDactylis glomeratae1
- Outcome
- nutritional valuee1
- Direction
- the weakeste1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Lolium multiflorum and F. braunii had the best nutritional value, while D. glomerata – the weakest”
The same questions in other papers
drought · yield · Dactylis glomerata (cocksfoot)Positive and negative results
1 paper in the same direction as this paper · 9 in the opposite direction
- negative
- negative
- negative
7 papers more in this group
See all 11 papers →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.