Abstract
Sandy clay loam soil in Bangkalan is a soil with a low content of nutrients, organic matter, bases, and cation exchange capacity (CEC), which inhibits the growth of maize plants. In addition, the nature of the soil causes the fertilizer to become more soluble, and the absorption of nutrients, especially potassium, is low. One of the efforts to increase potassium uptake in sandy loam soils is applying biochar and acid-activated bentonite. This study aimed to examine the effect of adding biochar and acid-activated bentonite to the nutrient uptake of maize plants in the sandy soil of Bangkalan. Biochar was prepared from maize cobs by the Kon-Tiki method; bentonite was activated by physical (200 oC) and chemical (1N H2SO4) methods. The greenhouse experiment was carried out using a completely randomized design with biochar (B) and acid-activated bentonite (T) as treatments, each with three levels, namely 0, 5, 10 t ha-1 and three replications. Soil analysis performed included pH, organic carbon, CEC and exchangeable bases, while plant tissue analysis included leaf height and area. The results showed that the combination of biochar and acid-activated bentonite significantly increased soil pH, soil exchangeable K, soil exchangeable Na, and leaf area of maize plants. A single application of biochar significantly increased soil organic C and maize plant height. The application of acid-activated bentonite significantly increased the CEC of sandy loam soils.
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Claims 5
Claim · model-written summary
The combination of biochar and acid-activated bentonite significantly increased soil pH, exchangeable K and exchangeable Na.
- Treatment
- combination of biochar and acid-activated bentonitee1
- Outcome
- soil pH, soil exchangeable K, soil exchangeable Nae1
- Direction
- increasede1
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The results showed that the combination of biochar and acid-activated bentonite significantly increased soil pH, soil exchangeable K, soil exchangeable Na, and leaf area of maize plants”
Claim · model-written summary
The combination of biochar and acid-activated bentonite significantly increased maize leaf area.
- Organ / stage
- leafe1
- Treatment
- combination of biochar and acid-activated bentonitee1
- Outcome
- leaf areae1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The results showed that the combination of biochar and acid-activated bentonite significantly increased soil pH, soil exchangeable K, soil exchangeable Na, and leaf area of maize plants”
Claim · model-written summary
A single application of biochar significantly increased soil organic C.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“A single application of biochar significantly increased soil organic C and maize plant height”
Claim · model-written summary
A single application of biochar significantly increased maize plant height.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“A single application of biochar significantly increased soil organic C and maize plant height”
Claim · model-written summary
Acid-activated bentonite significantly increased the cation exchange capacity of sandy loam soils.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The results showed that the combination of biochar and acid-activated bentonite significantly increased soil pH, soil exchangeable K, soil exchangeable Na, and leaf area of maize plants”
e3“The application of acid-activated bentonite significantly increased the CEC of sandy loam soils”
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