Abstract
Objective: This study sought to determine the best stabilizers for the HS extract and to evaluate the resulting extract in the semi-hydroponic cultivation of lettuce. Method: Experiment I and II was conducted in a completely randomized design (CRD) with 6 treatments and 4 replications. The treatments were: T1: Humic substances extract (extract without additives); T2: Algae extract 5% + calcium lignosulfonate 5% + 0.3% guar gum; T3: Algae extract 5% + calcium lignosulfonate 5% + pyroligneous acid 5% + 0.3% guar gum; T4: Algae extract 3% + calcium lignosulfonate 3% + 0.3% guar gum; T5: Algae extract 3% + calcium lignosulfonate 3% + pyroligneous acid 3% + 0.3% guar gum; T6: Control salts. A slab was used with the dimensions of 0.30 m x 1.5 m and with 5 plants per slab, using 30 slabs. The treatments were: T1: Salts; T2: Salts 25% x liquid fertilizer; T3: Salts 50% x liquid fertilizer; T4: Salts 75% x liquid fertilizer; T5: Salts 100% x liquid fertilizer; T6: Dose x liquid fertilizer. Results and Discussion: The response variables were: spectroscopy in the visible ultraviolet region (UV/Vis); NDVI; SPAD; EC; green and dry mass of the shoot, and leaf tissue analysis. In the conditions in which the experiment was conducted, it can be concluded that in Experiment I, Treatment 5 (Algae extract 3% + calcium lignosulfonate 3% + pyroligneous acid 3% + 0.3% guar gum) has the most suitable stabilizers for the HS extract, and that in Experiment II, Treatment 1 (salts) provided the best results. Implications of the research: In line with the environmental theme, the study presents and discusses relevant initiatives in society associating agribusiness and sustainable development.
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Claims 2
Claim · model-written summary
Algae extract 3% with calcium lignosulfonate 3%, pyroligneous acid 3% and guar gum was the most suitable stabilizer set for the humic substance extract
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- Algae extract 3% + calcium lignosulfonate 3% + pyroligneous acid 3% + 0.3% guar gume1
- Outcome
- most suitable stabilizers for the HS extracte1
- Direction
- most suitablee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study sought to determine the best stabilizers for the HS extract and to evaluate the resulting extract in the semi-hydroponic cultivation of lettuce”
e1“Treatment 5 (Algae extract 3% + calcium lignosulfonate 3% + pyroligneous acid 3% + 0.3% guar gum) has the most suitable stabilizers for the HS extract”
Claim · model-written summary
In the second experiment, the salts treatment (Treatment 1) gave the best results
- Taxon
- lettuceLactuca sativae0
- Treatment
- Treatment 1 (salts)e2
- Outcome
- best resultse2
- Direction
- best resultse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study sought to determine the best stabilizers for the HS extract and to evaluate the resulting extract in the semi-hydroponic cultivation of lettuce”
e2“Treatment 1 (salts) provided the best results”
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