Abstract
Alfalfa is one of the most nutritive and high-yielding forage legumes planted in rotation with cereal crops across the United States. Under semiarid and arid climates with limited water resources, sustainable management of the available resources is required. The objective of this study was to investigate the effect of different irrigation regimes and fungicide applications on alfalfa in the high desert region of the Colorado Plateau of the U.S. Field experiments were conducted during the 2012–2014 period. Alfalfa was planted in fall 2012, uniformly irrigated for crop establishment and subjected to seven different irrigation regimes after the first cut in spring 2013. Alfalfa was treated by fungicide application and was harvested at 10% blooming. The maximum amounts of applied water were 350, 300, 208, and 312 mm, respectively, during the first, second, third, and fourth regrowth cycles in 2013, and 373, 282, 198, and 246 mm in 2014 for the respective regrowth cycles in 2014; the seasonal applied irrigation amount varied from 711 to 1171 mm in 2013 and from 328 to 1100 mm in 2014. The results showed non-significant effect of fungicide application on the forage yield. Alfalfa forage yield was significantly affected by the irrigation regimes and showed a third order polynomial relationship with the applied irrigation amounts during each regrowth cycle and on seasonal scale. Forage yield decreased from the first cut to the fourth cut and the annual forage varied from 10.6 to 25.7 Mg/ha for the treated alfalfa and from 11.5 to 25.6 Mg/ha for the non-treated alfalfa. Forage yield at each cut accounted for 39.6, 24.2, 17.6, and 18.6% of the 2013 season forage yield and 31.4, 23.8, 21.6, and 23.2% of the 2014 season forage yield, for the first, second, third, and fourth cut, respectively. Alfalfa water use efficiency varied from 0.06 to 3.3 kg/m3. The relationships developed in this study could be used by forage growers, crop consultants, and project managers for decision making and planning to improve the productivity of water under the semiarid and arid climate of New Mexico and the surrounding regions.
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Claims 10
Claim · model-written summary
Fungicide application had a nonsignificant effect on alfalfa forage yield.
- Taxon
- Alfalfa
Medicago sativae0 - Treatment
- fungicide applicatione0
- Outcome
- forage yielde1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Alfalfa was treated by fungicide application”
e1“The results showed non-significant effect of fungicide application on the forage yield”
Claim · model-written summary
Irrigation regimes significantly affected alfalfa forage yield.
- Taxon
- AlfalfaMedicago sativae0
- Treatment
- irrigation regimese0
- Outcome
- forage yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Alfalfa forage yield was significantly affected by the irrigation regimes”
Claim · model-written summary
Alfalfa forage yield had a third-order polynomial relationship with applied irrigation in each regrowth cycle and season.
- Taxon
- AlfalfaMedicago sativae0
- Treatment
- applied irrigation amountse0
- Outcome
- forage yielde0
- Qualifier
- during each regrowth cycle and on seasonal scalee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Alfalfa forage yield was significantly affected by the irrigation regimes and showed a third order polynomial relationship with the applied irrigation amounts during each regrowth cycle and on seasonal scale”
Claim · model-written summary
Alfalfa forage yield decreased from the first to the fourth cut.
- Taxon
- AlfalfaMedicago sativat0
- Outcome
- Forage yielde0
- Direction
- decreasede0
- Comparator
- first cut to the fourth cute0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Forage yield decreased from the first cut to the fourth cut”
t0“Alfalfa”
Claim · model-written summary
Annual forage yield ranged from 10.6 to 25.7 Mg/ha for fungicide-treated alfalfa.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- treated alfalfae0
- Outcome
- annual foragee0
- Value
- 10.6 to 25.7 Mg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“annual forage varied from 10.6 to 25.7 Mg/ha for the treated alfalfa”
Claim · model-written summary
Annual forage yield ranged from 11.5 to 25.6 Mg/ha for untreated alfalfa.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- non-treated alfalfae0
- Outcome
- annual foragee1
- Value
- 11.5 to 25.6 Mg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“from 11.5 to 25.6 Mg/ha for the non-treated alfalfa”
e1“annual forage varied from 10.6 to 25.7 Mg/ha for the treated alfalfa”
Claim · model-written summary
The four cuts accounted for 39.6, 24.2, 17.6, and 18.6% of 2013 seasonal forage yield.
- Taxon
- AlfalfaMedicago sativat0
- Outcome
- Forage yield at each cute0
- Value
- 39.6, 24.2, 17.6, and 18.6%e0
- Qualifier
- 2013 seasone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Forage yield at each cut accounted for 39.6, 24.2, 17.6, and 18.6% of the 2013 season forage yield”
t0“Alfalfa”
Claim · model-written summary
The four cuts accounted for 31.4, 23.8, 21.6, and 23.2% of 2014 seasonal forage yield.
- Taxon
- AlfalfaMedicago sativat0
- Outcome
- forage yielde0
- Value
- 31.4, 23.8, 21.6, and 23.2%e0
- Qualifier
- 2014 seasone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“31.4, 23.8, 21.6, and 23.2% of the 2014 season forage yield”
t0“Alfalfa”
Claim · model-written summary
Alfalfa water use efficiency ranged from 0.06 to 3.3 kg/m3.
- Taxon
- AlfalfaMedicago sativae0
- Outcome
- water use efficiencye0
- Value
- 0.06 to 3.3 kg/m3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Alfalfa water use efficiency varied from 0.06 to 3.3 kg/m3”
Claim · model-written summary
The study proposes its yield–irrigation relationships as decision aids for improving water productivity.
- Taxon
- AlfalfaMedicago sativat0
- Outcome
- decision making and planning to improve the productivity of watere0
- Setting
- New Mexico and the surrounding regionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The relationships developed in this study could be used by forage growers, crop consultants, and project managers for decision making and planning to improve the productivity of water under the semiarid and arid climate of New Mexico and the surrounding regions”
t0“Alfalfa”
The same questions in other papers
fungicide · yield · Medicago sativa (alfalfa)Results differ
3 papers in the same direction as this paper · 7 in the opposite direction
- positive
- positive
- positive
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.