Abstract
Abstract The purpose of the study was to compare the effectiveness of a novel micronutrient fertilizer, modified montmorillonite clay, to the of the conventionally used salts and chelates as carriers of micronutrients to plants. Three elements — Cu, Zn, and Mn — in combination in various rates, and in three forms, as sulphates, EDTA chelates, or attached to montmorillonite clay, were applied to two micronutrient deficient sandy soils. Tomato ( Lycopersicum esculentum Mill.) and beans ( Phaseolus vulgaris L.) were grown under controlled greenhouse conditions in the treated soils. The application of micronutrient elements, in all of the forms used, significantly increased plant yields. In addition, the supply of micronutrients significantly increased the elemental concentrations of the plants. However the highest concentration of elements found in the plants did not always correspond to the highest yields. Generally the lower levels of addition of combined micronutrients improved the growth conditions considerably and the higher ones were less effective. The clay carrier was similar to the expensive chelates and generally more efficient than the salts in element supply and this resulted in better yield responses. The optimal rate of application of the combined elements for dry yield production in tomato plants in the soils studied appeared to be: 0.5 mg Cu, 1.6 mg Zn, and 2.5 mg Mn per kg of soil for the clay and chelate forms and somewhat higher for the salts.
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Claims 8
Claim · model-written summary
Micronutrient application in all forms significantly increased plant yields of tomato and beans.
- Taxon
- Tomato
Solanum lycopersicume0 - Treatment
- application of micronutrient elementse1
- Outcome
- plant yieldse1
- Direction
- increasede1
- Setting
- controlled greenhouse conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato ( Lycopersicum esculentum Mill.) and beans ( Phaseolus vulgaris L.) were grown under controlled greenhouse conditions in the treated soils.”
e1“The application of micronutrient elements, in all of the forms used, significantly increased plant yields.”
Claim · model-written summary
Supply of micronutrients significantly increased elemental concentrations in tomato and bean plants.
- Taxon
- TomatoSolanum lycopersicume0
- Treatment
- supply of micronutrientse2
- Outcome
- elemental concentrations of the plantse2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato ( Lycopersicum esculentum Mill.) and beans ( Phaseolus vulgaris L.) were grown under controlled greenhouse conditions in the treated soils.”
e2“In addition, the supply of micronutrients significantly increased the elemental concentrations of the plants.”
Claim · model-written summary
The highest element concentrations in tomato and bean plants did not always correspond to the highest yields.
- Taxon
- TomatoSolanum lycopersicume0
- Outcome
- highest concentration of elementse3
- Setting
- controlled greenhouse conditionse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato ( Lycopersicum esculentum Mill.) and beans ( Phaseolus vulgaris L.) were grown under controlled greenhouse conditions in the treated soils.”
e3“However the highest concentration of elements found in the plants did not always correspond to the highest yields.”
Claim · model-written summary
Lower levels of combined micronutrients improved growth conditions of tomato and beans considerably.
- Taxon
- TomatoSolanum lycopersicume0
- Treatment
- lower levels of addition of combined micronutrientse4
- Outcome
- growth conditionse4
- Direction
- improvede4
- Comparator
- the higher onese4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato ( Lycopersicum esculentum Mill.) and beans ( Phaseolus vulgaris L.) were grown under controlled greenhouse conditions in the treated soils.”
e4“Generally the lower levels of addition of combined micronutrients improved the growth conditions considerably and the higher ones were less effective.”
Claim · model-written summary
Higher levels of combined micronutrients were less effective than lower levels.
- Taxon
- TomatoSolanum lycopersicume0
- Treatment
- the higher onese4
- Outcome
- effectivee4
- Direction
- lesse4
- Comparator
- lower levels of additione4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato ( Lycopersicum esculentum Mill.) and beans ( Phaseolus vulgaris L.) were grown under controlled greenhouse conditions in the treated soils.”
e4“Generally the lower levels of addition of combined micronutrients improved the growth conditions considerably and the higher ones were less effective.”
Claim · model-written summary
The clay carrier was more efficient than salts in element supply and similar to chelates.
- Taxon
- TomatoSolanum lycopersicume0
- Treatment
- The clay carriere5
- Outcome
- element supplye5
- Direction
- more efficiente5
- Comparator
- the saltse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato ( Lycopersicum esculentum Mill.) and beans ( Phaseolus vulgaris L.) were grown under controlled greenhouse conditions in the treated soils.”
e5“The clay carrier was similar to the expensive chelates and generally more efficient than the salts in element supply and this resulted in better yield responses.”
Claim · model-written summary
The clay carrier gave better yield responses than salts.
- Taxon
- TomatoSolanum lycopersicume0
- Treatment
- clay carriere5
- Outcome
- yield responsese5
- Direction
- bettere5
- Comparator
- saltse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato ( Lycopersicum esculentum Mill.) and beans ( Phaseolus vulgaris L.) were grown under controlled greenhouse conditions in the treated soils.”
e5“The clay carrier was similar to the expensive chelates and generally more efficient than the salts in element supply and this resulted in better yield responses.”
Claim · model-written summary
Optimal application rates for dry yield in tomato were 0.5 mg Cu, 1.6 mg Zn and 2.5 mg Mn per kg soil for clay and chelate forms, somewhat higher for salts.
- Taxon
- tomato plantsSolanum lycopersicume6
- Treatment
- the combined elementse6
- Outcome
- dry yield productione6
- Value
- 0.5 mg Cu, 1.6 mg Zn, and 2.5 mg Mn per kg of soile6
- Qualifier
- somewhat higher for the saltse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato ( Lycopersicum esculentum Mill.) and beans ( Phaseolus vulgaris L.) were grown under controlled greenhouse conditions in the treated soils.”
e6“The optimal rate of application of the combined elements for dry yield production in tomato plants in the soils studied appeared to be: 0.5 mg Cu, 1.6 mg Zn, and 2.5 mg Mn per kg of soil for the clay and chelate forms and somewhat higher for the salts.”
The same questions in other papers
micronutrient · yield · Solanum lycopersicum (tomato)Positive and negative results
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See all 13 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.