Abstract
This work aimed to analyze the effect of the variation of the proportions of calcium in relation to the contentes of magnesium and potassium in the cationic capacity of change (CCC) of the soil, seeking to propitiate the appropriate balance of bases, so that the soybean plants presented good nutritional state and had conditions of resisting to the attack of Phakopsora pachyrhizi Syd. & P. Syd. The experiment was driven in randomized blocks with eight replications and the treatments consisted of doses of Ca:Mg:K in relation to CCC of the soil being:1) without correction of the bases (original soil with 3,8%:6,6%:2,4%); 2) 35:15:5; 3) 45:15:5; 4) 55:15:5; 5) 65:15:5; 6) 75:15:5. The soybean cultivar used in the experiment was BRS 184, sowed in mud vases containing dystrophic Red Latosol (Oxisol) as substrate. The inoculation was realized in the fenologic stadium V4. The disease severity was determined through visual notes considering the percentage foliate area with visible symptoms of the disease, being calculated the Area Under Disease Progress Curve (AUDPC). The data were submitted to the variance analysis (p<0.05) and fitting to regression models. The balance among the nutrientes was analyzed being calculated the index DRIS. The contents of nutrients, the matter dry indexes (MDI) and nutritional balance index (NBI) were inserted in the program ChecarDris for obtaining of the index DRIS. The results appeared that the percentages of 55% of calcium, 15% of magnesium and 5% of potassium, increase larger nutritional balance in the soybean providing to smallest area under disease progress curve (AUDPC), reduction in the severity of the rust (%), besides increase the largest productivity.
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Claims 3
Claim · model-written summary
A soil Ca:Mg:K proportion of 55%:15%:5% gave larger nutritional balance in soybean.
- Taxon
- soybean
Glycine maxe0 - Treatment
- 55% of calcium, 15% of magnesium and 5% of potassiume0
- Outcome
- nutritional balancee0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the percentages of 55% of calcium, 15% of magnesium and 5% of potassium, increase larger nutritional balance in the soybean”
Claim · model-written summary
The 55%:15%:5% Ca:Mg:K proportion gave the smallest AUDPC and reduced soybean rust severity.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- 55% of calcium, 15% of magnesium and 5% of potassiume1
- Interactor
- Phakopsora pachyrhiziPhakopsora pachyrhizie3pathogen
- Outcome
- area under disease progress curve (AUDPC), reduction in the severity of the ruste2
- Direction
- reductione2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“55% of calcium, 15% of magnesium and 5% of potassium”
e2“smallest area under disease progress curve (AUDPC), reduction in the severity of the rust (%)”
t0“Soybean”
e3“Phakopsora pachyrhizi”
Claim · model-written summary
The 55%:15%:5% Ca:Mg:K proportion increased soybean productivity to the largest value.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- 55% of calcium, 15% of magnesium and 5% of potassiume1
- Outcome
- productivitye4
- Direction
- increasee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“55% of calcium, 15% of magnesium and 5% of potassium”
e4“increase the largest productivity”
t0“Soybean”
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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.