Abstract
The changes over time in soil pH, plant growth and zinc uptake by soybean (Glycine max (L.) Merr.) cv. Wills grown in a zinc-deficient black earth under two watering regimens, viz. watering to weight (WTW) and constant water table (CWT), were determined in a pot experiment. In the absence of applied zinc, CWT plants achieved twice the dry matter yield of WTW plants. Interveinal chlorosis was observed on CWT plants at 20 days after sowing, but not on WTW plants at any time during the experiment. Leaf lamina zinc concentrations at a number of nodes were less than 10 ¦g g-1 in plants grown for 25 days under both watering regimens. Fertilization with zinc at 30 kg zinc ha-1 significantly increased the dry matter yield of CWT plants and, particularly, the size of laminae at node 5 and above. Plants grown in the absence of applied zinc recovered from zinc deficiency over the period from 25 to 35 days after sowing. Rates of dry matter and zinc accumulation over this period increased, while zinc concentrations in the plant and particularly in the younger leaves increased markedly. This recovery coincided with a substantial decline in soil pH. The recovery from zinc stress is attributed to the greatly increased availability of zinc to the plant roots which may have resulted from the drop in soil pH.
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
Constant water table plants achieved twice the dry matter yield of watering-to-weight plants without applied zinc
- Taxon
- soybean
Glycine maxe0 - Treatment
- constant water table (CWT)e2
- Outcome
- dry matter yielde1
- Direction
- higherinferrede1
- Value
- twicee1
- Qualifier
- In the absence of applied zince1
- Comparator
- watering to weight (WTW)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“uptake by soybean (Glycine max (L.) Merr.) cv. Wills”
e1“In the absence of applied zinc, CWT plants achieved twice the dry matter yield of WTW plants”
e2“under two watering regimens, viz. watering to weight (WTW) and constant water table (CWT)”
Claim · model-written summary
Interveinal chlorosis was observed on constant water table plants but not on watering-to-weight plants
- Taxon
- soybeanGlycine maxe0
- Treatment
- CWT plantse3
- Outcome
- Interveinal chlorosise3
- Comparator
- WTW plantse3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“uptake by soybean (Glycine max (L.) Merr.) cv. Wills”
e3“Interveinal chlorosis was observed on CWT plants at 20 days after sowing, but not on WTW plants at any time during the experiment”
Claim · model-written summary
Leaf lamina zinc concentrations were below 10 µg/g in plants grown for 25 days under both watering regimens
- Taxon
- soybeanGlycine maxe0
- Outcome
- Leaf lamina zinc concentrationse4
- Value
- less than 10 ¦g g-1e4
- Qualifier
- in plants grown for 25 days under both watering regimense4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“uptake by soybean (Glycine max (L.) Merr.) cv. Wills”
e4“Leaf lamina zinc concentrations at a number of nodes were less than 10 ¦g g-1 in plants grown for 25 days under both watering regimens”
Claim · model-written summary
Zinc fertilization significantly increased the dry matter yield of constant water table plants
- Taxon
- soybeanGlycine maxe0
- Treatment
- Fertilization with zinc at 30 kg zinc ha-1e5
- Outcome
- dry matter yielde5
- Direction
- increasede5
- Comparator
- absence of applied zince1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“uptake by soybean (Glycine max (L.) Merr.) cv. Wills”
e1“In the absence of applied zinc, CWT plants achieved twice the dry matter yield of WTW plants”
e5“Fertilization with zinc at 30 kg zinc ha-1 significantly increased the dry matter yield of CWT plants and, particularly, the size of laminae at node 5 and above”
Claim · model-written summary
Zinc fertilization significantly increased the size of laminae at node 5 and above in constant water table plants
- Taxon
- soybeanGlycine maxe0
- Organ / stage
- laminaee5
- Treatment
- Fertilization with zinc at 30 kg zinc ha-1e5
- Outcome
- size of laminae at node 5 and abovee5
- Direction
- increasede5
- Comparator
- absence of applied zince1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“uptake by soybean (Glycine max (L.) Merr.) cv. Wills”
e1“In the absence of applied zinc, CWT plants achieved twice the dry matter yield of WTW plants”
e5“Fertilization with zinc at 30 kg zinc ha-1 significantly increased the dry matter yield of CWT plants and, particularly, the size of laminae at node 5 and above”
Claim · model-written summary
Plants grown without applied zinc recovered from zinc deficiency between 25 and 35 days after sowing
- Taxon
- soybeanGlycine maxe0
- Treatment
- in the absence of applied zince6
- Outcome
- recovered from zinc deficiencye6
- Qualifier
- over the period from 25 to 35 days after sowinge6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“uptake by soybean (Glycine max (L.) Merr.) cv. Wills”
e6“Plants grown in the absence of applied zinc recovered from zinc deficiency over the period from 25 to 35 days after sowing”
Claim · model-written summary
Rates of dry matter and zinc accumulation increased during the recovery period
- Taxon
- soybeanGlycine maxe0
- Outcome
- Rates of dry matter and zinc accumulatione7
- Direction
- increasede7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“uptake by soybean (Glycine max (L.) Merr.) cv. Wills”
e7“Rates of dry matter and zinc accumulation over this period increased, while zinc concentrations in the plant and particularly in the younger leaves increased markedly”
Claim · model-written summary
Zinc concentrations in the plant, particularly in the younger leaves, increased markedly during recovery
- Taxon
- soybeanGlycine maxe0
- Organ / stage
- younger leavese7
- Outcome
- zinc concentrations in the plant and particularly in the younger leavese7
- Direction
- increased markedlye7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“uptake by soybean (Glycine max (L.) Merr.) cv. Wills”
e7“Rates of dry matter and zinc accumulation over this period increased, while zinc concentrations in the plant and particularly in the younger leaves increased markedly”
Claim · model-written summary
Soil pH declined substantially during zinc recovery
- Taxon
- soybeanGlycine maxe0
- Outcome
- soil pHe1
- Direction
- declinee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“uptake by soybean (Glycine max (L.) Merr.) cv. Wills”
e1“This recovery coincided with a substantial decline in soil pH”
Claim · model-written summary
Recovery from zinc stress is attributed to greatly increased zinc availability to the roots following the drop in soil pH
- Taxon
- soybeanGlycine maxe0
- Outcome
- recovery from zinc stresse1
- Qualifier
- the greatly increased availability of zinc to the plant rootse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“uptake by soybean (Glycine max (L.) Merr.) cv. Wills”
e1“The recovery from zinc stress is attributed to the greatly increased availability of zinc to the plant roots which may have resulted from the drop in soil pH”
The same questions in other papers
zinc atom · growth · Glycine max (soybean)Results differ
25 papers in the same direction as this paper · 9 in the opposite direction
- negative
- negative
- no effect
31 papers more in this group
See all 35 papers →zinc atom · yield · Glycine max (soybean)Results differ
78 papers in the same direction as this paper · 10 in the opposite direction
- negative
- no effect
- negative
85 papers more in this group
See all 89 papers →soil water · yield · Glycine max (soybean)Results differ
14 papers in the same direction as this paper · 23 in the opposite direction
- no effect
- negative
- no effect
34 papers more in this group
See all 38 papers →soil water · physiology: pigments · Glycine max (soybean)Positive and negative results
2 in the opposite direction
- positive
- positive
fertilization · growth · Glycine max (soybean)Positive and negative results
358 papers in the same direction as this paper · 56 in the opposite direction · 3 reporting no difference from an alternative
- negative
- negative
- negative
414 papers more in this group
See all 418 papers →fertilization · yield · Glycine max (soybean)Positive and negative results
1,020 papers in the same direction as this paper · 155 in the opposite direction · 16 reporting no difference from an alternative
- no effect
- no effect
- negative
1,188 papers more in this group
See all 1,192 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.