Abstract
Application of biochar from vine shoots (Vitis vinifera L.) as an organic amendment in the soil is an alternative agricultural management of interest. The behavior of this type of amendment in the soil requires more information to adjust the pyrolysis conditions in order to obtain a high-quality biochar. The aim of this work is determining the influence of the application of this type of biochar on the soil-plant system. For this purpose, an agronomic test was performed in greenhouse pots. A randomized tri-factorial block design was adopted with the following factors: final pyrolysis temperature (400 and 600 °C), application rate (0 wt. % as a control, 1.5 and 3 wt. %) and texture of the growing media (sandy-loam and clay-loam origin). The selected crop was sorghum (Sorghum bicolor L. Moench), the development and production of which was evaluated during two complete growing cycles under greenhouse conditions. Application of biochar produced at 400 °C significantly increased plants roots dry weight in the sandy-loam growing substrate (52% compared to the control). Grain production was also significantly affected by biochar application, showing better results after addition of biochar produced at 400 °C. Water holding capacity and K, Ca, and Mg contents were enhanced by biochar addition, with evident effects of the application ratios for some of these variables. The effect on the pH of substrates in the sandy-loam texture was weak; however, a significant decrease was observed after the addition of biochar produced at 600 °C.
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Claims 6
Claim · model-written summary
Biochar produced at 400 °C increased sorghum root dry weight by 52% in sandy-loam substrate.
- Organ / stage
- rootse0
- Treatment
- biochar produced at 400 °Ce0
- Outcome
- plants roots dry weighte0
- Direction
- increasede0
- Value
- 52%e0
- Comparator
- controle0
- Setting
- sandy-loam growing substratee0
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of biochar produced at 400 °C significantly increased plants roots dry weight in the sandy-loam growing substrate (52% compared to the control)”
t0“Sorghum”
Claim · model-written summary
Grain production was higher after adding biochar made at 400 °C.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain production was also significantly affected by biochar application, showing better results after addition of biochar produced at 400 °C”
t0“Sorghum”
Claim · model-written summary
Biochar increased substrate water holding capacity.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water holding capacity and K, Ca, and Mg contents were enhanced by biochar addition”
t0“Sorghum”
Claim · model-written summary
Biochar increased substrate K, Ca and Mg contents.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water holding capacity and K, Ca, and Mg contents were enhanced by biochar addition”
t0“Sorghum”
Claim · model-written summary
Application ratio affected some measured substrate fertility variables.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with evident effects of the application ratios for some of these variables”
t0“Sorghum”
Claim · model-written summary
Biochar made at 600 °C significantly decreased sandy-loam substrate pH.
- Treatment
- biochar produced at 600 °Ce0
- Outcome
- pH of substratese0
- Direction
- decreasee0
- Qualifier
- sandy-loam texturee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect on the pH of substrates in the sandy-loam texture was weak; however, a significant decrease was observed after the addition of biochar produced at 600 °C”
t0“Sorghum”
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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.