Abstract
Downy mildew is one of the most destructive diseases of maize worldwide. Disease prevention needs to be done at an early stage of plant growth. Maize is most susceptible to downy mildew between 10 and 45 days after sowing (DAS). This study aims to determine the effectiveness of applying fungicides in the early stages of plant growth combined with the addition of calcium nutrients. The research was conducted in Maros Regency, South Sulawesi, Indonesia, using a randomized block design two factor design. The first factor was five levels of fungicide application frequency, while the second included four fertiliser elements. The downy mildew inoculum source plants were planted and inoculated with Peronosclerospora spp. one month before planting the test genotypes. The results showed that repeated fungicide sprays in the early stages of plant growth effectively suppressed the downy mildew infection by 19.30%. Meanwhile, the first fertilisation at 10 DAS with nitrogen, phosphorus, and calcium (NPCa) was the most effective in suppressing downy mildew compared to other fertilisation packages. The treatment combination of three repeated fungicide applications (10, 15, and 20 DAS) with NPCa fertilisation can reduce the incidence of downy mildew by up to 33.23%. However, this combination resulted in lower yields compared to NPK fertilisation. Consequently, further research is required to explore the most effective method for applying potassium and calcium fertilisers.
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Claims 4
Claim · model-written summary
Repeated early fungicide sprays suppressed downy mildew infection by 19.30%.
- Treatment
- repeated fungicide sprayse0
- Outcome
- downy mildew infectione0
- Direction
- suppressede0
- Value
- 19.30%e0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“repeated fungicide sprays in the early stages of plant growth effectively suppressed the downy mildew infection by 19.30%”
t0“maize downy mildew”
Claim · model-written summary
NPCa fertilisation at 10 DAS most effectively suppressed downy mildew versus other packages.
- Treatment
- first fertilisation at 10 DAS with nitrogen, phosphorus, and calcium (NPCa)e0
- Outcome
- downy mildewe0
- Direction
- most effective in suppressinge0
- Comparator
- other fertilisation packagese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the first fertilisation at 10 DAS with nitrogen, phosphorus, and calcium (NPCa) was the most effective in suppressing downy mildew compared to other fertilisation packages”
t0“maize downy mildew”
Claim · model-written summary
Three fungicide applications with NPCa reduced downy mildew incidence by up to 33.23%.
- Treatment
- three repeated fungicide applications (10, 15, and 20 DAS) with NPCa fertilisatione0
- Outcome
- incidence of downy mildewe0
- Direction
- reducee0
- Value
- 33.23%e0
- Qualifier
- up to 33.23%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The treatment combination of three repeated fungicide applications (10, 15, and 20 DAS) with NPCa fertilisation can reduce the incidence of downy mildew by up to 33.23%”
t0“maize downy mildew”
Claim · model-written summary
The combined fungicide and NPCa treatment yielded less than NPK fertilisation.
- Treatment
- The treatment combination of three repeated fungicide applications (10, 15, and 20 DAS) with NPCa fertilisatione1
- Outcome
- yieldse0
- Direction
- lowere0
- Comparator
- NPK fertilisatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this combination resulted in lower yields compared to NPK fertilisation”
e1“The treatment combination of three repeated fungicide applications (10, 15, and 20 DAS) with NPCa fertilisation”
t0“maize downy mildew”
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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.