Abstract
Solute fate in soil-plant continuum could either be soil or leaf uptake or leaching beyond the rooting zone. An adsorption coefficient (KD) is an important chemical property to describe the interaction between the solute and soil, affecting the solute movement in soils from one point to another. Boron (B), manganese (Mn), and zinc (Zn) uptake are evident in the leaves as a constituent of photosynthesis and other plant body-building mechanisms for growth and development. This study investigates the availability of micronutrients (B, Mn, and Zn) to citrus trees through modified application methods and rates. Leaf samples were collected from experimental plots arranged in a randomized complete block design, with 4 micronutrient treatments: control, foliar ×1, foliar ×2, and soil ×1. Boron, Mn, and Zn rates were 1.12, 10.08, and 5.60 kg ha−1, respectively. Composite soil samples were randomly collected at 5 points, and a 1-point adsorption study was conducted in 4 soil depths at an increment of 15 cm from the soil surface. Adsorption coefficient (KD) for Mn and B was 22 and 3 times higher at 0–15 cm than at soil depth of 15–60 cm. The adsorption coefficient (KD) for Zn was 2.5 times greater at 0–15 cm than 15–30 cm soil depth, while there was little or no sorption at 30–60 cm. Leaf Mn and Zn concentrations showed that foliar spray was 2 times higher than the soil application method, while B showed that the soil application method was 2 times higher than foliar application method for 2 seasons sampling events. Thus, the behavior of B, Mn, and Zn in the soil via adsorption coefficient (KD) reflects the availability of B, Mn, and Zn in the citrus leaves.
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Claims 7
Claim · model-written summary
Manganese adsorption was 22 times higher at 0–15 cm than at 15–60 cm.
- Outcome
- Adsorption coefficient (KD) for Mne0
- Direction
- highere0
- Value
- 22e0
- Comparator
- 15–60 cme0
- Setting
- 0–15 cme0
CitrusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Adsorption coefficient (KD) for Mn and B was 22 and 3 times higher at 0–15 cm than at soil depth of 15–60 cm”
t0“Citrus”
Claim · model-written summary
Boron adsorption was three times higher at 0–15 cm than 15–60 cm.
- Outcome
- Adsorption coefficient (KD) for Mn and Be0
- Direction
- highere0
- Value
- 3 timese0
- Comparator
- 15–60 cme0
- Setting
- 0–15 cme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Adsorption coefficient (KD) for Mn and B was 22 and 3 times higher at 0–15 cm than at soil depth of 15–60 cm”
t0“Citrus”
Claim · model-written summary
Zinc adsorption was 2.5 times greater at 0–15 cm than at 15–30 cm.
- Outcome
- Adsorption coefficient (KD) for Zne0
- Direction
- greatere0
- Value
- 2.5 timese0
- Comparator
- 15–30 cme0
- Setting
- 0–15 cme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Adsorption coefficient (KD) for Zn was 2.5 times greater at 0–15 cm than 15–30 cm soil depth”
t0“Citrus”
Claim · model-written summary
Zinc showed little or no sorption at 30–60 cm.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was little or no sorption at 30–60 cm”
t0“Zinc Sorption”
t1“Citrus”
Claim · model-written summary
Foliar application produced leaf manganese concentrations twice those of soil application.
- Treatment
- foliar spraye0
- Outcome
- Leaf Mne0
- Direction
- highere0
- Value
- 2 timese0
- Comparator
- soil application methode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf Mn and Zn concentrations showed that foliar spray was 2 times higher than the soil application method”
t0“Citrus”
Claim · model-written summary
Foliar application produced leaf zinc concentrations twice those of soil application.
- Treatment
- foliar spraye0
- Outcome
- Leaf Mn and Zn concentrationse0
- Direction
- highere0
- Value
- 2 timese0
- Comparator
- soil application methode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf Mn and Zn concentrations showed that foliar spray was 2 times higher than the soil application method”
t0“Citrus”
Claim · model-written summary
Soil application produced leaf boron concentrations twice those of foliar application.
- Treatment
- soil application methode0
- Outcome
- Be0
- Direction
- highere0
- Value
- 2 timese0
- Comparator
- foliar application methode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B showed that the soil application method was 2 times higher than foliar application method for 2 seasons sampling events”
t0“Leaf Uptake on Citrus”
The same questions in other papers
application · nutrient: content · CitrusPositive and negative results
14 papers in the same direction as this paper · 3 in the opposite direction
- positive
- no effect
- negative
14 papers more in this group
See all 18 papers →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.