Abstract
Abstract Charcoal rot, caused by Macrophomina phaseolina , has become increasingly problematic for melon growers using subsurface drip irrigation in Arizona; but has rarely been observed in fields with furrow irrigation. Since the relationship between increasing incidence of charcoal rot on melon and irrigation type is unknown, studies were initiated to determine the effects of edaphic factors on inoculum density. Soil samples were collected once from fields irrigated by subsurface drip, with and without plastic mulch, and by furrow at 10, 20 and 30 cm depths. Samples were analysed for percentage soil moisture, pH, salinity and inoculum density. Percentage soil moisture was significantly higher at 20 and 30 cm depths in the furrow‐irrigated field compared with the drip‐irrigated field with plastic mulch, but not in the field without plastic mulch. Average minimum and maximum temperatures and inoculum density were significantly lower at all three depths in the furrow‐irrigated field compared with both types of drip irrigation. pH was significantly higher in the furrow‐irrigated field compared with both types of drip irrigation at 20 and 30 cm depths but not at 10 cm depth. Differences in inoculum densities of M. phaseolina suggest that drip irrigation may contribute to higher disease incidences.
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Claims 6
Claim · model-written summary
Soil moisture was higher at 20 and 30 cm depths in the furrow-irrigated field than in the drip-irrigated field with plastic mulch.
- Taxon
- melon
.jpg?width=60)
Cucumis melot0 - Treatment
- furrow‐irrigatede0
- Outcome
- Percentage soil moisturee0
- Direction
- highere0
- Qualifier
- at 20 and 30 cm depthse0
- Comparator
- drip‐irrigated field with plastic mulche0
- Setting
- Arizonat0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“Melon Fields in Arizona”
e0“Percentage soil moisture was significantly higher at 20 and 30 cm depths in the furrow‐irrigated field compared with the drip‐irrigated field with plastic mulch, but not in the field without plastic mulch”
Claim · model-written summary
Soil moisture did not differ significantly between the furrow-irrigated field and the field without plastic mulch.
- Taxon
- melonCucumis melot0
- Treatment
- furrow‐irrigatede0
- Outcome
- Percentage soil moisturee0
- Direction
- no_changeinferrede0
- Comparator
- field without plastic mulche0
- Setting
- Arizonat0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Melon Fields in Arizona”
e0“Percentage soil moisture was significantly higher at 20 and 30 cm depths in the furrow‐irrigated field compared with the drip‐irrigated field with plastic mulch, but not in the field without plastic mulch”
Claim · model-written summary
Average minimum and maximum temperatures were lower at all three depths in the furrow-irrigated field than under both types of drip irrigation.
- Taxon
- melonCucumis melot0
- Treatment
- furrow‐irrigatede1
- Outcome
- Average minimum and maximum temperaturese1
- Direction
- lowere1
- Qualifier
- at all three depthse1
- Comparator
- both types of drip irrigatione1
- Setting
- Arizonat0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Melon Fields in Arizona”
e1“Average minimum and maximum temperatures and inoculum density were significantly lower at all three depths in the furrow‐irrigated field compared with both types of drip irrigation”
Claim · model-written summary
M. phaseolina inoculum density was lower in the furrow-irrigated field than under both types of drip irrigation at all three depths.
- Taxon
- melonCucumis melot0
- Treatment
- furrow‐irrigatede1
- Interactor
- M. phaseolina
Macrophomina phaseolinae3pathogen - Outcome
- inoculum densities of M. phaseolinae3
- Direction
- lowere1
- Qualifier
- at all three depthse1
- Comparator
- both types of drip irrigatione1
- Setting
- Arizonat0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Melon Fields in Arizona”
e1“Average minimum and maximum temperatures and inoculum density were significantly lower at all three depths in the furrow‐irrigated field compared with both types of drip irrigation”
e3“Differences in inoculum densities of M. phaseolina suggest that drip irrigation may contribute to higher disease incidences”
Claim · model-written summary
Soil pH was higher at 20 and 30 cm depths in the furrow-irrigated field than under both types of drip irrigation.
- Taxon
- melonCucumis melot0
- Treatment
- furrow‐irrigatede2
- Outcome
- pHe2
- Direction
- highere2
- Qualifier
- at 20 and 30 cm depthse2
- Comparator
- both types of drip irrigatione2
- Setting
- Arizonat0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Melon Fields in Arizona”
e2“pH was significantly higher in the furrow‐irrigated field compared with both types of drip irrigation at 20 and 30 cm depths but not at 10 cm depth”
Claim · model-written summary
Drip irrigation may contribute to higher melon disease incidence through M. phaseolina inoculum.
- Taxon
- melonCucumis melot0
- Treatment
- drip irrigatione3
- Interactor
- M. phaseolinaMacrophomina phaseolinae3pathogen
- Outcome
- disease incidencese3
- Direction
- highere3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Melon Fields in Arizona”
e3“Differences in inoculum densities of M. phaseolina suggest that drip irrigation may contribute to higher disease incidences”
The same questions in other papers
irrigation · Macrophomina phaseolina · Cucumis melo (muskmelon)Positive and negative results
1 in the opposite direction
- negative
irrigation · soil: physics · Cucumis melo (muskmelon)Positive and negative results
2 in the opposite direction
- positive
- 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.