Abstract
Zinc deficiency in soil is induced due to soil micronutrient depletion from intensification of cultivation, application of high analysis NPK fertilizers and lesser use of organic manure. Among the various growth factors, zinc was recognized as one of the main limiting factors of maize crop growth and yields. This hypothesis was verified by conducting an experiment on zinc deficient soil to study the response of applied zinc through soil and foliar Zn-EDTA application at two stages of crop growth. The results revealed that soil application of ZnSO4 @ 25 kg ha-1 recorded the highest grain yields (62.9 q ha-1) which was at par with soil application of ZnSO4 @ 20 kg ha-1 (61.5 q ha-1) whereas, decline in grain yield of maize was observed at higher level of zinc soil application. Among the methods of zinc application, the combination treatment of seed fortification by 0.5 % of Zn-EDTA and two sprays of 0.2 % Zn-EDTA at 5th leaf stage and tasseling stages recorded relatively highest grain yield (59.0 qha-1) when compared to seed fortification and foliar application alone. Soil application of Zn explicitly influenced the Zn uptake by maize crop. The significantly highest Zn uptake was recorded by treatment application of ZnSO4 @ 25 kg ha-1 (545 g ha-1) which was at par with treatment, application of ZnSO4 @ 20 kg ha-1 (532 g ha-1). The accumulation of DTPA extractable Zn in the soil varied considerably within the treatments. Significant higher accumulation of DTPA extractable Zn was recorded by soil application of ZnSO4 @ 30 kg ha-1 (0.43 mg kg-1) which was statistically at par with soil application of ZnSO4 @ 25 kg ha-1 (0.42 mg kg-1). The zinc fractions did not show much variation however, treatment receiving zinc through soil application showed increased concentration of Zn fractions versus other methods of zinc fertilization. In general, application of 30 kg ZnSO4 ha-1 recorded higher concentration but no distinct trend was observed. The highest concentration of WS-Zn (0.17 mg kg-1), S-Zn (0.08 mg kg-1) CA-Zn (0.25 mg kg-1) was recorded by application of 30 kg ZnSO4 ha-1. RES-Zn emerged as a dominant Zn fraction followed by OM-Zn. The Zn fractions were positively and significantly correlated with DTPA-Zn and Zn uptake and also exhibited positively and significantly correlated with each other.
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Claims 16
Claim · model-written summary
Soil ZnSO4 at 25 kg ha-1 gave the highest maize grain yield, 62.9 q ha-1.
- Treatment
- soil application of ZnSO4 @ 25 kg ha-1e0
- Outcome
- grain yieldse0
- Direction
- higheste0
- Value
- 62.9 q ha-1e0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil application of ZnSO4 @ 25 kg ha-1 recorded the highest grain yields (62.9 q ha-1)”
t0“Maize”
Claim · model-written summary
Soil ZnSO4 at 20 kg ha-1 yielded 61.5 q ha-1 and was at par with 25 kg ha-1.
- Treatment
- soil application of ZnSO4 @ 20 kg ha-1e0
- Outcome
- soil application of ZnSO4 @ 20 kg ha-1 (61.5 q ha-1)e0
- Direction
- at pare0
- Value
- 61.5 q ha-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at par with soil application of ZnSO4 @ 20 kg ha-1 (61.5 q ha-1)”
t0“Maize”
Claim · model-written summary
Higher soil zinc application levels reduced maize grain yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decline in grain yield of maize was observed at higher level of zinc soil application”
Claim · model-written summary
Seed fortification with 0.5 % Zn-EDTA plus two 0.2 % sprays gave a relatively highest yield of 59.0 qha-1 versus either method alone.
- Organ / stage
- 5th leaf stage and tasseling stagese0
- Treatment
- seed fortification by 0.5 % of Zn-EDTA and two sprays of 0.2 % Zn-EDTAe0
- Outcome
- grain yielde0
- Direction
- relatively higheste0
- Value
- 59.0 qha-1e0
- Comparator
- seed fortification and foliar application alonee0
Not reportedTaxon
Verbatim
e0“the combination treatment of seed fortification by 0.5 % of Zn-EDTA and two sprays of 0.2 % Zn-EDTA at 5th leaf stage and tasseling stages recorded relatively highest grain yield (59.0 qha-1) when compared to seed fortification and foliar application alone”
Claim · model-written summary
Soil ZnSO4 at 25 kg ha-1 gave the significantly highest maize Zn uptake, 545 g ha-1.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The significantly highest Zn uptake was recorded by treatment application of ZnSO4 @ 25 kg ha-1 (545 g ha-1)”
t0“Maize”
Claim · model-written summary
Soil ZnSO4 at 20 kg ha-1 gave maize Zn uptake of 532 g ha-1, at par with 25 kg ha-1.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at par with treatment, application of ZnSO4 @ 20 kg ha-1 (532 g ha-1)”
t0“Maize”
e1“The significantly highest Zn uptake”
Claim · model-written summary
Soil ZnSO4 at 30 kg ha-1 produced significantly higher DTPA-extractable soil Zn, 0.43 mg kg-1.
- Treatment
- soil application of ZnSO4 @ 30 kg ha-1e0
- Outcome
- accumulation of DTPA extractable Zne0
- Direction
- highere0
- Value
- 0.43 mg kg-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant higher accumulation of DTPA extractable Zn was recorded by soil application of ZnSO4 @ 30 kg ha-1 (0.43 mg kg-1)”
t0“Maize”
Claim · model-written summary
Soil ZnSO4 at 25 kg ha-1 produced 0.42 mg kg-1 DTPA-extractable soil Zn, statistically at par with 30 kg ha-1.
- Treatment
- soil application of ZnSO4 @ 25 kg ha-1e0
- Outcome
- accumulation of DTPA extractable Zne1
- Direction
- at pare0
- Value
- 0.42 mg kg-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“statistically at par with soil application of ZnSO4 @ 25 kg ha-1 (0.42 mg kg-1)”
t0“Maize”
e1“The accumulation of DTPA extractable Zn in the soil varied considerably within the treatments.”
Claim · model-written summary
Soil zinc application increased Zn fraction concentration versus other methods.
- Treatment
- zinc through soil applicatione0
- Outcome
- concentration of Zn fractionse0
- Direction
- increasede0
- Comparator
- other methods of zinc fertilizatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatment receiving zinc through soil application showed increased concentration of Zn fractions versus other methods of zinc fertilization”
t0“Maize”
Claim · model-written summary
At 30 kg ZnSO4 ha-1, WS-Zn concentration was highest at 0.17 mg kg-1.
- Treatment
- application of 30 kg ZnSO4 ha-1e0
- Outcome
- concentration of WS-Zne0
- Direction
- higheste0
- Value
- 0.17 mg kg-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest concentration of WS-Zn (0.17 mg kg-1), S-Zn (0.08 mg kg-1) CA-Zn (0.25 mg kg-1) was recorded by application of 30 kg ZnSO4 ha-1.”
t0“Maize”
Claim · model-written summary
At 30 kg ZnSO4 ha-1, S-Zn concentration was highest at 0.08 mg kg-1.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest concentration of WS-Zn (0.17 mg kg-1), S-Zn (0.08 mg kg-1) CA-Zn (0.25 mg kg-1) was recorded by application of 30 kg ZnSO4 ha-1.”
t0“Maize”
Claim · model-written summary
At 30 kg ZnSO4 ha-1, CA-Zn concentration was highest at 0.25 mg kg-1.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest concentration of WS-Zn (0.17 mg kg-1), S-Zn (0.08 mg kg-1) CA-Zn (0.25 mg kg-1) was recorded by application of 30 kg ZnSO4 ha-1.”
t0“Maize”
Claim · model-written summary
RES-Zn was the dominant soil zinc fraction, followed by OM-Zn.
- Outcome
- RES-Zn emerged as a dominant Zn fraction followed by OM-Zne0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RES-Zn emerged as a dominant Zn fraction followed by OM-Zn.”
t0“Maize”
Claim · model-written summary
Soil Zn fractions were positively and significantly correlated with DTPA-Zn.
Not reportedTaxon
Verbatim
e0“The Zn fractions were positively and significantly correlated with DTPA-Zn and Zn uptake”
Claim · model-written summary
Soil Zn fractions were positively and significantly correlated with maize Zn uptake.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Zn fractions were positively and significantly correlated with DTPA-Zn and Zn uptake”
t0“Maize”
Claim · model-written summary
The soil Zn fractions were positively and significantly correlated with each other.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“also exhibited positively and significantly correlated with each other.”
t0“Maize”
e1“The Zn fractions were positively and significantly correlated with DTPA-Zn and Zn uptake”
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