Abstract
alicylic acid (SA) and Ca2+ regulate the physiological and biochemical mechanisms in plants. A factorial experiment was designed to evaluate the effect of foliar application of calcium chloride (0, 10, 20, 30 or 40 mM) and salicylic acid (0, 0.5, 1, 1.5 or 2 mM) on the vegetative growth of romaine lettuce cv. Balady during 2013/2014 and 2014/2015 seasons at the Experimental Farm of Horticulture Department, Faculty of Agriculture, Ain Shams University, Qalubia Governorate, Egypt. Results clearly indicated positive effects of foliar applications of calcium chloride and salicylic acid either alone or in combination on lettuce growth, productivity and some physiological parameters. Foliar application of calcium chloride at 20 mM significantly increased vegetative growth parameters (plant length, head diameter, fresh and dry weights of head, number of leaves/head, average leaf area and leaf area index), chlorophyll (a, b, and total), leaf relative water content, leaf membrane stability index, and macro- and micro-nutrients. Moreover, salicylic acid spraying at 1.5 mM significantly gave the highest significant values of all aforementioned parameters. Exogenous applications of calcium chloride and salicylic acid either alone or in combination reduced nitrate accumulation in the leaves. Spraying of calcium chloride at 20 mM with salicylic acid at 1.5 mM was the most effective treatment which can be used as an applicable practice in romaine lettuce cv. Balady cultivation.
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Claims 9
Claim · model-written summary
Calcium chloride at 20 mM increased vegetative growth traits significantly.
- Taxon
- lettuce
Lactuca sativae1 - Treatment
- calcium chloride at 20 mMe0
- Outcome
- vegetative growth parameterse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of calcium chloride at 20 mM significantly increased vegetative growth parameters (plant length, head diameter, fresh and dry weights of head, number of leaves/head, average leaf area and leaf area index)”
e1“Lettuce (Lactuca sativa)”
Claim · model-written summary
Calcium chloride at 20 mM increased chlorophyll.
- Taxon
- lettuceLactuca sativae1
- Treatment
- calcium chloride at 20 mMe0
- Outcome
- chlorophyll (a, b, and total)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“calcium chloride at 20 mM significantly increased vegetative growth parameters (plant length, head diameter, fresh and dry weights of head, number of leaves/head, average leaf area and leaf area index), chlorophyll (a, b, and total)”
e1“Lettuce (Lactuca sativa)”
Claim · model-written summary
Calcium chloride at 20 mM increased leaf relative water content and membrane stability.
- Taxon
- lettuceLactuca sativae1
- Treatment
- calcium chloride at 20 mMe0
- Outcome
- leaf relative water content, leaf membrane stability indexe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“calcium chloride at 20 mM significantly increased vegetative growth parameters (plant length, head diameter, fresh and dry weights of head, number of leaves/head, average leaf area and leaf area index), chlorophyll (a, b, and total), leaf relative water content, leaf membrane stability index”
e1“Lettuce (Lactuca sativa)”
Claim · model-written summary
Calcium chloride at 20 mM increased macro and micronutrients.
- Taxon
- lettuceLactuca sativae1
- Treatment
- calcium chloride at 20 mMe0
- Outcome
- macro- and micro-nutrientse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“calcium chloride at 20 mM significantly increased vegetative growth parameters (plant length, head diameter, fresh and dry weights of head, number of leaves/head, average leaf area and leaf area index), chlorophyll (a, b, and total), leaf relative water content, leaf membrane stability index, and macro- and micro-nutrients”
e1“Lettuce (Lactuca sativa)”
Claim · model-written summary
Salicylic acid at 1.5 mM yielded the highest values for the stated growth and physiological parameters.
- Taxon
- lettuceLactuca sativae1
- Treatment
- salicylic acid spraying at 1.5 mMe0
- Outcome
- all aforementioned parameterse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salicylic acid spraying at 1.5 mM significantly gave the highest significant values of all aforementioned parameters”
e1“Lettuce (Lactuca sativa)”
Claim · model-written summary
Calcium chloride application reduced leaf nitrate accumulation.
- Taxon
- lettuceLactuca sativae1
- Treatment
- calcium chloridee0
- Outcome
- nitrate accumulation in the leavese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous applications of calcium chloride and salicylic acid either alone or in combination reduced nitrate accumulation in the leaves”
e1“Lettuce (Lactuca sativa)”
Claim · model-written summary
Salicylic acid application reduced leaf nitrate accumulation.
- Taxon
- lettuceLactuca sativae1
- Treatment
- salicylic acide0
- Outcome
- nitrate accumulation in the leavese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous applications of calcium chloride and salicylic acid either alone or in combination reduced nitrate accumulation in the leaves”
e1“Lettuce (Lactuca sativa)”
Claim · model-written summary
Combined calcium chloride and salicylic acid reduced leaf nitrate accumulation.
- Taxon
- lettuceLactuca sativae1
- Treatment
- calcium chloride and salicylic acide0
- Outcome
- nitrate accumulation in the leavese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous applications of calcium chloride and salicylic acid either alone or in combination reduced nitrate accumulation in the leaves”
e1“Lettuce (Lactuca sativa)”
Claim · model-written summary
The authors recommend calcium chloride 20 mM with salicylic acid 1.5 mM for romaine lettuce cultivation.
- Taxon
- romaine lettuce cv. Balady
Lactuca sativa var. longifoliae0 - Outcome
- calcium chloride at 20 mM with salicylic acid at 1.5 mMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spraying of calcium chloride at 20 mM with salicylic acid at 1.5 mM was the most effective treatment which can be used as an applicable practice in romaine lettuce cv. Balady cultivation”
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See all 5 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.