Abstract
Abstract Alfalfa ( Medicago sativa L.) is commonly grown in rotation with other crops but land can be continuously cropped with alfalfa. The purpose of this study was to determine the stand establishment and production of alfalfa cultivars that differed in disease resistance in a continuous alfalfa cropping situation, with limited supplemental irrigation. Two alfalfa cultivar experiments were spring‐seeded in 1970 at the Nebraska Agric. Exp. Stn. Mead Field Lab. on a Sharpsburg silty clay loam (fine, montmorillonitic, mesic Typic Argiudoll) soil with no known prior alfalfa cropping. The area was plowed in late May 1975 after the first cutting and fallowed. Soybeans ( Glycine max L. Merr.) were seeded in 1976 on subareas reserved for seeding alfalfa in 1977 and 1978, and in 1977 on the subarea reserved for seeding alfalfa in 1978. Two alfalfa experiments were spring‐seeded per year in 1976, 1977, and 1978, a foliar fungicide and a fungicide seed treatment experiment. Forage yields did not differ among foliar fungicide treatments or between ‘Arc’ and ‘Ranger’ in the year of seeding or in subsequent years. Anthracnose (caused by Colletotrichum trifolii Bain) and foliar diseases were at subeconomic levels. Stands in the year of seeding did not differ among fungicide seed treatments or between ‘Agate’ and ‘Dawson’. Anthracnose and phytophthora root rot (caused by Phytophthora megasperma Drechs) were factors in stand decline and yield reduction of susceptible cultivars after the year of seeding. Stands in the year of seeding were excellent on the same land area where alfalfa was seeded in 1970 with no known previous alfalfa cropping, after plowing the 5‐year‐old stand of alfalfa in 1975 and seeding in 1976, and after 1 or 2 years of soybeans and seeding alfalfa in 1977 and 1978, respectively. Average forage yields of the experiments seeded in 1970 were 26% higher in the year of seeding, and 40 and 35% higher in the 1st and 2nd year after seeding, respectively, than in the experiments seeded in 1976 to 1978.
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Claims 11
Claim · model-written summary
Foliar fungicide treatments did not differ in forage yield.
- Taxon
- Alfalfa
Medicago sativae1 - Treatment
- foliar fungicide treatmentse0
- Outcome
- Forage yieldse0
- Direction
- did not differe0
- Comparator
- foliar fungicide treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Forage yields did not differ among foliar fungicide treatments”
e1“Alfalfa ( Medicago sativa L.)”
Claim · model-written summary
Arc and Ranger did not differ in forage yield in seeding or subsequent years.
- Taxon
- AlfalfaMedicago sativae1
- Material
- ‘Arc’e0
- Outcome
- Forage yieldse0
- Direction
- did not differe0
- Qualifier
- in the year of seeding or in subsequent yearse0
- Comparator
- ‘Ranger’e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Forage yields did not differ among foliar fungicide treatments or between ‘Arc’ and ‘Ranger’ in the year of seeding or in subsequent years”
e1“Alfalfa ( Medicago sativa L.)”
Claim · model-written summary
Anthracnose and foliar disease levels were subeconomic.
- Taxon
- AlfalfaMedicago sativae1
- Interactor
- Colletotrichum trifolii BainColletotrichum trifoliie0pathogen
- Outcome
- Anthracnosee0
- Qualifier
- subeconomic levelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Anthracnose (caused by Colletotrichum trifolii Bain) and foliar diseases were at subeconomic levels”
e1“Alfalfa ( Medicago sativa L.)”
Claim · model-written summary
Seed-year stands did not differ among fungicide seed treatments.
- Taxon
- AlfalfaMedicago sativae1
- Treatment
- fungicide seed treatmentse0
- Outcome
- Stands in the year of seedinge0
- Direction
- did not differe0
- Comparator
- fungicide seed treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stands in the year of seeding did not differ among fungicide seed treatments”
e1“Alfalfa ( Medicago sativa L.)”
Claim · model-written summary
Seed-year stands did not differ between Agate and Dawson.
- Taxon
- AlfalfaMedicago sativae1
- Material
- ‘Agate’e0
- Outcome
- Stands in the year of seedinge0
- Direction
- did not differe0
- Comparator
- ‘Dawson’e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stands in the year of seeding did not differ among fungicide seed treatments or between ‘Agate’ and ‘Dawson’”
e1“Alfalfa ( Medicago sativa L.)”
Claim · model-written summary
Anthracnose contributed to stand decline and yield reduction in susceptible cultivars after seeding year.
- Taxon
- AlfalfaMedicago sativae1
- Interactor
- Colletotrichum trifolii BainColletotrichum trifoliie2pathogen
- Outcome
- stand decline and yield reductione0
- Qualifier
- susceptible cultivars after the year of seedinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Anthracnose and phytophthora root rot (caused by Phytophthora megasperma Drechs) were factors in stand decline and yield reduction of susceptible cultivars after the year of seeding”
e1“Alfalfa ( Medicago sativa L.)”
e2“Anthracnose (caused by Colletotrichum trifolii Bain)”
Claim · model-written summary
Phytophthora root rot contributed to stand decline and yield reduction in susceptible cultivars after seeding year.
- Taxon
- AlfalfaMedicago sativae1
- Interactor
- Phytophthora megasperma Drechs
Phytophthora megaspermae0pathogen - Outcome
- stand decline and yield reductione0
- Qualifier
- susceptible cultivars after the year of seedinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phytophthora root rot (caused by Phytophthora megasperma Drechs) were factors in stand decline and yield reduction of susceptible cultivars after the year of seeding”
e1“Alfalfa ( Medicago sativa L.)”
Claim · model-written summary
Excellent alfalfa stands established after an older alfalfa stand and after one or two soybean years.
- Taxon
- alfalfaMedicago sativae0
- Outcome
- Stands in the year of seedinge0
- Qualifier
- excellente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stands in the year of seeding were excellent on the same land area where alfalfa was seeded in 1970 with no known previous alfalfa cropping, after plowing the 5‐year‐old stand of alfalfa in 1975 and seeding in 1976, and after 1 or 2 years of soybeans and seeding alfalfa in 1977 and 1978, respectively”
Claim · model-written summary
1970 seed-year experiments yielded 26% more forage than 1976–1978 experiments.
- Taxon
- AlfalfaMedicago sativae1
- Outcome
- Average forage yieldse0
- Direction
- highere0
- Value
- 26%e0
- Qualifier
- in the year of seedinge0
- Comparator
- experiments seeded in 1976 to 1978e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Average forage yields of the experiments seeded in 1970 were 26% higher in the year of seeding, and 40 and 35% higher in the 1st and 2nd year after seeding, respectively, than in the experiments seeded in 1976 to 1978”
e1“Alfalfa ( Medicago sativa L.)”
Claim · model-written summary
1970 experiments yielded 40% more forage in the first year after seeding.
- Taxon
- AlfalfaMedicago sativae1
- Outcome
- Average forage yieldse0
- Direction
- highere0
- Value
- 40e0
- Qualifier
- 1st and 2nd year after seedinge0
- Comparator
- experiments seeded in 1976 to 1978e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Average forage yields of the experiments seeded in 1970 were 26% higher in the year of seeding, and 40 and 35% higher in the 1st and 2nd year after seeding, respectively, than in the experiments seeded in 1976 to 1978”
e1“Alfalfa ( Medicago sativa L.)”
Claim · model-written summary
1970 experiments yielded 35% more forage in the second year after seeding.
- Taxon
- AlfalfaMedicago sativae1
- Outcome
- Average forage yieldse0
- Direction
- highere0
- Value
- 35%e0
- Qualifier
- 2nd year after seedinge0
- Comparator
- experiments seeded in 1976 to 1978e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Average forage yields of the experiments seeded in 1970 were 26% higher in the year of seeding, and 40 and 35% higher in the 1st and 2nd year after seeding, respectively, than in the experiments seeded in 1976 to 1978”
e1“Alfalfa ( Medicago sativa L.)”
The same questions in other papers
fungicide · yield · Medicago sativa (alfalfa)Results differ
3 papers in the same direction as this paper · 7 reporting no difference from an alternative
- no effect
- positive
- positive
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See all 11 papers →application · yield · Medicago sativa (alfalfa)Positive and negative results
6 papers in the same direction as this paper · 31 reporting no difference from an alternative
- positive
- positive
- positive
34 papers more in this group
See all 38 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.