Abstract
The effects of phosphorus in commercial fertilizers on concentrations of total cadmium (Cd) and zinc (Zn), plant-available Cd and Zn and sugarcane uptake of Cd and Zn were studied. A single rate (312.5 kg/ ha) of 16-16-8 NPK fertilizer was applied on three levels (0-3, 3-20 and >20 mg) of Cd contaminated sugarcane cultivated field in Mae Sot district, Tak province. In order to investigate the effects of different rates of fertilizer application, 16-16-8 NPK fertilizer at the rate of 312.5, 625 and 1,250 kg fertilizer/ ha was applied to soils in a pot experiment and planted with a piece of mature cane stem. The pot experiment was conducted in a randomized block design with three replications. Repeat applications of fertilizer were made at the same rate in the fifth month of the cultivation for both field and pot experiments. Soil and sugarcane samples were collected at the end of the second and the sixth month respectively. After harvesting, sugarcanes were divided into five components: underground stems, roots, bagasses, juice and leaves. Chemical analysis of the field experiments showed that total Cd and Zn in sugarcane increased with Cd concentration in cultivated field and found that Cd and Zn mostly accumulated in roots. Longterm effects of fertilizer application was expected to be a concern although there was no higher Cd and Zn concentrations in soil after repeat fertilization in the fifth month of the cultivation. For the pot experiment, the results showed that higher P can make more Cd available and ease take up and accumulation in different parts of the sugarcane. Moderate P application rate reduced phytoavailability of Zn at the end of the second month because of the P-Zn mineral precipitation. However, the ability of sugarcane to uptake Zn increased again at the end of the sixth month of the cultivation at which time total P in the soil decreased. Total Cd and Zn in sugarcane were significantly increased with increasing 16-16-8 NPK fertilizer application rates and we found that Cd and Zn accumulated in sugarcane according to the following sequence: roots> underground stems (setts)> bagasses> leaves> juice.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 10
Claim · model-written summary
Sugarcane total Cd increased with field Cd concentration.
Verbatim
e0“total Cd and Zn in sugarcane increased with Cd concentration in cultivated field”
Claim · model-written summary
Sugarcane total Zn increased with field Cd concentration.
Verbatim
e0“total Cd and Zn in sugarcane increased with Cd concentration in cultivated field”
Claim · model-written summary
Cd and Zn accumulated mainly in sugarcane roots.
Verbatim
t0“sugarcane”
e0“Cd and Zn mostly accumulated in roots”
Claim · model-written summary
Repeat fertilization did not increase soil Cd and Zn concentrations.
- Taxon
- sugarcanet0
- Treatment
- repeat fertilizatione0
- Outcome
- Cd and Zn concentrations in soile0
- Direction
- no highere0
Not reportedComparator
Verbatim
t0“sugarcane”
e0“there was no higher Cd and Zn concentrations in soil after repeat fertilization in the fifth month of the cultivation”
Claim · model-written summary
Higher phosphorus increased Cd availability and accumulation in sugarcane parts.
Not reportedComparator
Verbatim
e0“higher P can make more Cd available and ease take up and accumulation in different parts of the sugarcane”
Claim · model-written summary
Moderate phosphorus reduced Zn phytoavailability after two months.
- Taxon
- sugarcanet0
- Treatment
- Moderate P application ratee0
- Outcome
- phytoavailability of Zne0
- Direction
- reducede0
- Qualifier
- P-Zn mineral precipitatione0
Not reportedComparator
Verbatim
t0“sugarcane”
e0“Moderate P application rate reduced phytoavailability of Zn at the end of the second month because of the P-Zn mineral precipitation.”
Claim · model-written summary
Sugarcane Zn uptake rose again by month six as soil total P decreased.
Verbatim
e0“the ability of sugarcane to uptake Zn increased again at the end of the sixth month of the cultivation at which time total P in the soil decreased”
Claim · model-written summary
Higher NPK rates significantly increased sugarcane total Cd.
- Taxon
- sugarcanee0
- Treatment
- 16-16-8 NPK fertilizer application ratese0
- Outcome
- Total Cde0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Total Cd and Zn in sugarcane were significantly increased with increasing 16-16-8 NPK fertilizer application rates”
Claim · model-written summary
Higher NPK rates significantly increased sugarcane total Zn.
- Taxon
- sugarcanee0
- Treatment
- 16-16-8 NPK fertilizer application ratese0
- Outcome
- Zn in sugarcanee0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Total Cd and Zn in sugarcane were significantly increased with increasing 16-16-8 NPK fertilizer application rates”
Claim · model-written summary
Sugarcane Cd and Zn concentrations ranked roots, underground stems, bagasses, leaves, then juice.
Verbatim
e0“Cd and Zn accumulated in sugarcane according to the following sequence: roots> underground stems (setts)> bagasses> leaves> juice”
The same questions in other papers
fertilization · nutrient: content · Saccharum officinarum (sugarcane)Positive and negative results
6 papers in the same direction as this paper · 71 in the opposite direction
- positive
- positive
- positive
74 papers more in this group
See all 78 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.