Abstract
Guava is an important fruit species but poorly studied for the effect of humic substances and soil mulching on its nutrition and fruit production. Thus, an experiment was conducted to evaluate the nutritional status and fruit production of guava as a function of humic substances and soil mulching in Brazilian semiarid. The experimental design was in randomized blocks with treatments distributed in a factorial arrangement (5 × 2) referring to humic substances doses (0, 10, 20, 30 and 40 mL of Humitec plant−1) and organic mulching (with and without organic mulching). Nutritional status of guava is affected by humic substances and soil mulching. The use of humic substances combined with soil mulching promotes optimum supplies of nitrogen, phosphorus, calcium, sulfur, boron and iron, but not calcium, copper and zinc. Under sandy soil and semiarid climate it is possible to recommend 40 mL L−1 of humic substances and soil mulching.
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Claims 5
Claim · model-written summary
Humic substances and soil mulching affect the nutritional status of guava.
- Taxon
- guava
Psidium guajavae1 - Treatment
- humic substances and soil mulchinge1
- Outcome
- Nutritional statuse1
- Setting
- Brazilian semiaride4
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Nutritional status of guava is affected by humic substances and soil mulching”
e4“in Brazilian semiarid”
Claim · model-written summary
Humic substances combined with soil mulching promote optimum supplies of nitrogen, phosphorus and calcium in guava.
- Taxon
- GuavaPsidium guajavae0
- Treatment
- humic substances combined with soil mulchinge2
- Outcome
- optimum supplies of nitrogen, phosphorus, calciume2
- Direction
- promotese2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Guava is an important fruit species”
e2“The use of humic substances combined with soil mulching promotes optimum supplies of nitrogen, phosphorus, calcium, sulfur, boron and iron, but not calcium, copper and zinc”
Claim · model-written summary
Humic substances combined with soil mulching promote optimum supplies of sulfur, boron and iron in guava.
- Taxon
- GuavaPsidium guajavae0
- Treatment
- humic substances combined with soil mulchinge2
- Outcome
- sulfur, boron and irone2
- Direction
- promotese2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Guava is an important fruit species”
e2“The use of humic substances combined with soil mulching promotes optimum supplies of nitrogen, phosphorus, calcium, sulfur, boron and iron, but not calcium, copper and zinc”
Claim · model-written summary
Humic substances combined with soil mulching did not promote copper and zinc supplies in guava.
- Taxon
- GuavaPsidium guajavae0
- Treatment
- humic substances combined with soil mulchinge2
- Outcome
- copper and zince2
- Direction
- but note2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Guava is an important fruit species”
e2“The use of humic substances combined with soil mulching promotes optimum supplies of nitrogen, phosphorus, calcium, sulfur, boron and iron, but not calcium, copper and zinc”
Claim · model-written summary
Under sandy soil and semiarid climate, 40 mL L−1 of humic substances with soil mulching is recommended for guava.
- Taxon
- GuavaPsidium guajavae0
- Outcome
- 40 mL L−1 of humic substances and soil mulchinge3
- Value
- 40 mL L−1e3
- Setting
- sandy soil and semiarid climatee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Guava is an important fruit species”
e3“Under sandy soil and semiarid climate it is possible to recommend 40 mL L−1 of humic substances and soil mulching”
The same questions in other papers
other · nutrient: content · Psidium guajava (guava)Results agree
2 papers in the same direction as this paper
- positive
- positive
mulching · nutrient: content · Psidium guajava (guava)Results agree
2 papers in the same direction as this paper
- 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.