Abstract
Light textured soils having low organic matter and nutrient content in the soil are prone to nutrient deficiencies in the plants growing on such soils. Zinc deficiency symptoms were observed in poplar plantations and nurseries, having soil deficient in organic matter and nutrient contents in Ludhiana District of Punjab on such soils. The deficiency was exhibited by development of irregular interveinal chlorosis of recently matured leaves along the margins that extends towards base of leaves. The deficiency was ameliorated by soil application of 25 g/plant Zn (through ZnSO 4 .7H 2 O) in 1 year old plants, 40 g/plant Zn in 2 years old plants and 30 kg/ha Zn in 4.5 years old plants. Application of 20 kg/ha Zn was sufficient for eradicating Zn deficiency in nurseries. Deficiency could be cured by 5-6 weekly sprays of 0.5 per cent ZnSO 4 .7H 2 O (alongwith half the quantity of unslaked lime) in the solution volumes of 1 l/tree for one year old trees, 2 l/tree for 2 year old trees and 250 l/ha for nursery. The micronutrient (except Fe) content of the recently matured normal leaves (Zn: 29.2-38.6 mg kg -1 ) was higher than the deficient leaves (Zn: 25.2-28.4 mg kg -1 ) taken from same position on branch or stem of trees. It was suggested to apply Zn at the planting time of poplar that can meet the requirement of plants throughout its growth.
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Claims 9
Claim · model-written summary
Poplar in low-organic-matter soils showed zinc deficiency.
PopulusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zinc deficiency symptoms were observed in poplar plantations and nurseries, having soil deficient in organic matter and nutrient contents in Ludhiana District of Punjab on such soils.”
Claim · model-written summary
Deficiency produced interveinal chlorosis of recently matured leaves.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The deficiency was exhibited by development of irregular interveinal chlorosis of recently matured leaves along the margins that extends towards base of leaves.”
t0“poplar”
Claim · model-written summary
Soil application of 25 g/plant Zn ameliorated deficiency in one-year plants.
- Treatment
- soil application of 25 g/plant Zn (through ZnSO 4 .7H 2 O)e0
- Outcome
- deficiencye0
- Direction
- amelioratede0
- Qualifier
- 1 year old plantse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The deficiency was ameliorated by soil application of 25 g/plant Zn (through ZnSO 4 .7H 2 O) in 1 year old plants, 40 g/plant Zn in 2 years old plants and 30 kg/ha Zn in 4.5 years old plants.”
t0“poplar”
Claim · model-written summary
Soil application of 40 g/plant Zn ameliorated deficiency in two-year plants.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The deficiency was ameliorated by soil application of 25 g/plant Zn (through ZnSO 4 .7H 2 O) in 1 year old plants, 40 g/plant Zn in 2 years old plants and 30 kg/ha Zn in 4.5 years old plants.”
t0“poplar”
Claim · model-written summary
Soil application of 30 kg/ha Zn ameliorated deficiency in 4.5-year plants.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The deficiency was ameliorated by soil application of 25 g/plant Zn (through ZnSO 4 .7H 2 O) in 1 year old plants, 40 g/plant Zn in 2 years old plants and 30 kg/ha Zn in 4.5 years old plants.”
t0“poplar”
Claim · model-written summary
20 kg/ha Zn eradicated nursery zinc deficiency.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 20 kg/ha Zn was sufficient for eradicating Zn deficiency in nurseries.”
t0“poplar”
Claim · model-written summary
Weekly zinc sulfate sprays cured deficiency.
- Treatment
- 5-6 weekly sprays of 0.5 per cent ZnSO 4 .7H 2 O (alongwith half the quantity of unslaked lime)e0
- Outcome
- Deficiencye0
- Direction
- curede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Deficiency could be cured by 5-6 weekly sprays of 0.5 per cent ZnSO 4 .7H 2 O (alongwith half the quantity of unslaked lime) in the solution volumes of 1 l/tree for one year old trees, 2 l/tree for 2 year old trees and 250 l/ha for nursery.”
t0“poplar”
Claim · model-written summary
Normal leaves contained more micronutrients except Fe than deficient leaves.
- Organ / stage
- recently matured normal leavese0
- Outcome
- micronutrient (except Fe) contente0
- Direction
- highere0
- Value
- 29.2-38.6 mg kg -1e0
- Qualifier
- Zn: 25.2-28.4 mg kg -1e0
- Comparator
- deficient leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The micronutrient (except Fe) content of the recently matured normal leaves (Zn: 29.2-38.6 mg kg -1 ) was higher than the deficient leaves (Zn: 25.2-28.4 mg kg -1 ) taken from same position on branch or stem of trees.”
t0“poplar”
Claim · model-written summary
Authors suggested zinc at poplar planting to meet growth requirements.
- Outcome
- apply Zn at the planting timee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was suggested to apply Zn at the planting time of poplar that can meet the requirement of plants throughout its growth.”
The same questions in other papers
zinc atom · nutrient: content · Populus (poplar)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
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.