Abstract
A Greenhouse experiment was conducted to identify the suitable dose of organic fertilizer for lettuce production. Different doses of organic fertilizer (6.5, 13 and 26 t ha-1) and the recommended dose of chemical fertilizer (RDCF) as standard were selected for this experiment. Application of 13 t ha-1 organic fertilizer significantly increased leaf size (length and breadth) of lettuce. This treatment also increased 14, 25, 21, 32, 24, 27, 36 and 168% fresh weight, dry weight, N, P, K, Ca, Mg & Na uptake over RDCF, respectively. Organic matter content was increased of 17.79, 43.82 and 89.89% in 6.5, 13 and 26 t ha-1 organic fertilizer treated plots respectively over recommended dose of chemical fertilizers. Data also indicated that organic fertilizer @ 26 t ha-1 resulted in significant increase in pH, total nitrogen (24%), organic matter (90%) and Zn (29%) compared to RDCF and decreased electrical conductivity, mineral nitrogen (NH4 +-N & NO3 --N) and cadmium and lead (Cd & Pb) in soil. Positive and significant correlation was observed on yield and yield attributes of lettuce and soil nitrogen, organic matter with pH, total nitrogen with mineral nitrogen and negative correlation was found with applied organic fertilizer with cadmium and lead. Based on these results, organic fertilizer @ 13 t ha-1 without chemical fertilizer could be recommended to increase lettuce yield as well as mitigate heavy metals in soil.SAARC J. Agri., 15(2): 93-102 (2017)
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Claims 20
Claim · model-written summary
Organic fertilizer at 13 t ha-1 significantly increased lettuce leaf length and breadth.
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- 13 t ha-1 organic fertilizere0
- Outcome
- leaf size (length and breadth)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 13 t ha-1 organic fertilizer significantly increased leaf size (length and breadth) of lettuce.”
Claim · model-written summary
13 t ha-1 organic fertilizer increased fresh weight by 14% over RDCF.
- Taxon
- lettuceLactuca sativae1
- Treatment
- 13 t ha-1 organic fertilizere1
- Outcome
- fresh weighte0
- Direction
- increasede0
- Value
- 14e0
- Comparator
- RDCFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This treatment also increased 14, 25, 21, 32, 24, 27, 36 and 168% fresh weight, dry weight, N, P, K, Ca, Mg & Na uptake over RDCF, respectively.”
e1“Application of 13 t ha-1 organic fertilizer significantly increased leaf size (length and breadth) of lettuce.”
Claim · model-written summary
13 t ha-1 organic fertilizer increased dry weight by 25% over RDCF.
- Taxon
- lettuceLactuca sativae1
- Treatment
- 13 t ha-1 organic fertilizere1
- Outcome
- dry weighte0
- Direction
- increasede0
- Value
- 25e0
- Comparator
- RDCFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This treatment also increased 14, 25, 21, 32, 24, 27, 36 and 168% fresh weight, dry weight, N, P, K, Ca, Mg & Na uptake over RDCF, respectively.”
e1“Application of 13 t ha-1 organic fertilizer significantly increased leaf size (length and breadth) of lettuce.”
Claim · model-written summary
13 t ha-1 organic fertilizer increased N by 21% over RDCF.
- Taxon
- lettuceLactuca sativae1
- Treatment
- 13 t ha-1 organic fertilizere1
- Outcome
- Ne0
- Direction
- increasede0
- Value
- 21e0
- Comparator
- RDCFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This treatment also increased 14, 25, 21, 32, 24, 27, 36 and 168% fresh weight, dry weight, N, P, K, Ca, Mg & Na uptake over RDCF, respectively.”
e1“Application of 13 t ha-1 organic fertilizer significantly increased leaf size (length and breadth) of lettuce.”
Claim · model-written summary
13 t ha-1 organic fertilizer increased P by 32% over RDCF.
- Taxon
- lettuceLactuca sativae1
- Treatment
- 13 t ha-1 organic fertilizere1
- Outcome
- Pe0
- Direction
- increasede0
- Value
- 32e0
- Comparator
- RDCFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This treatment also increased 14, 25, 21, 32, 24, 27, 36 and 168% fresh weight, dry weight, N, P, K, Ca, Mg & Na uptake over RDCF, respectively.”
e1“Application of 13 t ha-1 organic fertilizer significantly increased leaf size (length and breadth) of lettuce.”
Claim · model-written summary
13 t ha-1 organic fertilizer increased K by 24% over RDCF.
- Taxon
- lettuceLactuca sativae1
- Treatment
- 13 t ha-1 organic fertilizere1
- Outcome
- Ke0
- Direction
- increasede0
- Value
- 24e0
- Comparator
- RDCFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This treatment also increased 14, 25, 21, 32, 24, 27, 36 and 168% fresh weight, dry weight, N, P, K, Ca, Mg & Na uptake over RDCF, respectively.”
e1“Application of 13 t ha-1 organic fertilizer significantly increased leaf size (length and breadth) of lettuce.”
Claim · model-written summary
13 t ha-1 organic fertilizer increased Ca by 27% over RDCF.
- Taxon
- lettuceLactuca sativae1
- Treatment
- 13 t ha-1 organic fertilizere1
- Outcome
- Cae0
- Direction
- increasede0
- Value
- 27e0
- Comparator
- RDCFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This treatment also increased 14, 25, 21, 32, 24, 27, 36 and 168% fresh weight, dry weight, N, P, K, Ca, Mg & Na uptake over RDCF, respectively.”
e1“Application of 13 t ha-1 organic fertilizer significantly increased leaf size (length and breadth) of lettuce.”
Claim · model-written summary
13 t ha-1 organic fertilizer increased Mg by 36% over RDCF.
- Taxon
- lettuceLactuca sativae1
- Treatment
- 13 t ha-1 organic fertilizere1
- Outcome
- Mge0
- Direction
- increasede0
- Value
- 36e0
- Comparator
- RDCFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This treatment also increased 14, 25, 21, 32, 24, 27, 36 and 168% fresh weight, dry weight, N, P, K, Ca, Mg & Na uptake over RDCF, respectively.”
e1“Application of 13 t ha-1 organic fertilizer significantly increased leaf size (length and breadth) of lettuce.”
Claim · model-written summary
13 t ha-1 organic fertilizer increased Na uptake by 168%% over RDCF.
- Taxon
- lettuceLactuca sativae1
- Treatment
- 13 t ha-1 organic fertilizere1
- Outcome
- Na uptakee0
- Direction
- increasede0
- Value
- 168%e0
- Comparator
- RDCFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This treatment also increased 14, 25, 21, 32, 24, 27, 36 and 168% fresh weight, dry weight, N, P, K, Ca, Mg & Na uptake over RDCF, respectively.”
e1“Application of 13 t ha-1 organic fertilizer significantly increased leaf size (length and breadth) of lettuce.”
Claim · model-written summary
6.5 t ha-1 organic fertilizer increased soil organic matter over chemical fertilizer.
- Taxon
- lettuceLactuca sativat0
- Treatment
- organic fertilizere0
- Outcome
- Organic matter contente0
- Direction
- increasede0
- Value
- 17.79e0
- Qualifier
- 6.5e0
- Comparator
- recommended dose of chemical fertilizerse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Organic matter content was increased of 17.79, 43.82 and 89.89% in 6.5, 13 and 26 t ha-1 organic fertilizer treated plots respectively over recommended dose of chemical fertilizers.”
t0“lettuce (Lactuca sativa L.)”
Claim · model-written summary
13 t ha-1 organic fertilizer increased soil organic matter over chemical fertilizer.
- Taxon
- lettuceLactuca sativat0
- Treatment
- organic fertilizere0
- Outcome
- Organic matter contente0
- Direction
- increasede0
- Value
- 43.82e0
- Qualifier
- 13e0
- Comparator
- recommended dose of chemical fertilizerse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Organic matter content was increased of 17.79, 43.82 and 89.89% in 6.5, 13 and 26 t ha-1 organic fertilizer treated plots respectively over recommended dose of chemical fertilizers.”
t0“lettuce (Lactuca sativa L.)”
Claim · model-written summary
26 t ha-1 organic fertilizer increased soil organic matter over chemical fertilizer.
- Taxon
- lettuceLactuca sativat0
- Treatment
- organic fertilizere0
- Outcome
- Organic matter contente0
- Direction
- increasede0
- Value
- 89.89%e0
- Qualifier
- 26e0
- Comparator
- recommended dose of chemical fertilizerse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Organic matter content was increased of 17.79, 43.82 and 89.89% in 6.5, 13 and 26 t ha-1 organic fertilizer treated plots respectively over recommended dose of chemical fertilizers.”
t0“lettuce (Lactuca sativa L.)”
Claim · model-written summary
26 t ha-1 organic fertilizer increase soil pH.
- Taxon
- lettuceLactuca sativat0
- Treatment
- organic fertilizer @ 26 t ha-1e0
- Outcome
- pHe0
- Direction
- increasee0
- Comparator
- RDCFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Data also indicated that organic fertilizer @ 26 t ha-1 resulted in significant increase in pH, total nitrogen (24%), organic matter (90%) and Zn (29%) compared to RDCF and decreased electrical conductivity, mineral nitrogen (NH4 +-N & NO3 --N) and cadmium and lead (Cd & Pb) in soil.”
t0“lettuce (Lactuca sativa L.)”
Claim · model-written summary
26 t ha-1 organic fertilizer increase soil total nitrogen.
- Taxon
- lettuceLactuca sativat0
- Treatment
- organic fertilizer @ 26 t ha-1e0
- Outcome
- total nitrogene0
- Direction
- increasee0
- Value
- 24%e0
- Comparator
- RDCFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Data also indicated that organic fertilizer @ 26 t ha-1 resulted in significant increase in pH, total nitrogen (24%), organic matter (90%) and Zn (29%) compared to RDCF and decreased electrical conductivity, mineral nitrogen (NH4 +-N & NO3 --N) and cadmium and lead (Cd & Pb) in soil.”
t0“lettuce (Lactuca sativa L.)”
Claim · model-written summary
26 t ha-1 organic fertilizer increase soil organic matter.
- Taxon
- lettuceLactuca sativat0
- Treatment
- organic fertilizer @ 26 t ha-1e0
- Outcome
- organic mattere0
- Direction
- increasee0
- Value
- 90%e0
- Comparator
- RDCFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Data also indicated that organic fertilizer @ 26 t ha-1 resulted in significant increase in pH, total nitrogen (24%), organic matter (90%) and Zn (29%) compared to RDCF and decreased electrical conductivity, mineral nitrogen (NH4 +-N & NO3 --N) and cadmium and lead (Cd & Pb) in soil.”
t0“lettuce (Lactuca sativa L.)”
Claim · model-written summary
26 t ha-1 organic fertilizer increase soil Zn.
- Taxon
- lettuceLactuca sativat0
- Treatment
- organic fertilizer @ 26 t ha-1e0
- Outcome
- Zne0
- Direction
- increasee0
- Value
- 29%e0
- Comparator
- RDCFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Data also indicated that organic fertilizer @ 26 t ha-1 resulted in significant increase in pH, total nitrogen (24%), organic matter (90%) and Zn (29%) compared to RDCF and decreased electrical conductivity, mineral nitrogen (NH4 +-N & NO3 --N) and cadmium and lead (Cd & Pb) in soil.”
t0“lettuce (Lactuca sativa L.)”
Claim · model-written summary
26 t ha-1 organic fertilizer decreased soil electrical conductivity.
- Taxon
- lettuceLactuca sativat0
- Treatment
- organic fertilizer @ 26 t ha-1e0
- Outcome
- electrical conductivitye0
- Direction
- decreasede0
- Comparator
- RDCFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Data also indicated that organic fertilizer @ 26 t ha-1 resulted in significant increase in pH, total nitrogen (24%), organic matter (90%) and Zn (29%) compared to RDCF and decreased electrical conductivity, mineral nitrogen (NH4 +-N & NO3 --N) and cadmium and lead (Cd & Pb) in soil.”
t0“lettuce (Lactuca sativa L.)”
Claim · model-written summary
26 t ha-1 organic fertilizer decreased soil mineral nitrogen (NH4 +-N & NO3 --N).
- Taxon
- lettuceLactuca sativat0
- Treatment
- organic fertilizer @ 26 t ha-1e0
- Outcome
- mineral nitrogen (NH4 +-N & NO3 --N)e0
- Direction
- decreasede0
- Comparator
- RDCFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Data also indicated that organic fertilizer @ 26 t ha-1 resulted in significant increase in pH, total nitrogen (24%), organic matter (90%) and Zn (29%) compared to RDCF and decreased electrical conductivity, mineral nitrogen (NH4 +-N & NO3 --N) and cadmium and lead (Cd & Pb) in soil.”
t0“lettuce (Lactuca sativa L.)”
Claim · model-written summary
26 t ha-1 organic fertilizer decreased soil cadmium and lead (Cd & Pb).
- Taxon
- lettuceLactuca sativat0
- Treatment
- organic fertilizer @ 26 t ha-1e0
- Outcome
- cadmium and lead (Cd & Pb)e0
- Direction
- decreasede0
- Comparator
- RDCFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Data also indicated that organic fertilizer @ 26 t ha-1 resulted in significant increase in pH, total nitrogen (24%), organic matter (90%) and Zn (29%) compared to RDCF and decreased electrical conductivity, mineral nitrogen (NH4 +-N & NO3 --N) and cadmium and lead (Cd & Pb) in soil.”
t0“lettuce (Lactuca sativa L.)”
Claim · model-written summary
The authors recommend 13 t ha-1 organic fertilizer without chemical fertilizer for lettuce yield and soil heavy metal mitigation.
- Taxon
- lettuceLactuca sativae0
- Treatment
- organic fertilizer @ 13 t ha-1 without chemical fertilizere0
- Outcome
- increase lettuce yield as well as mitigate heavy metals in soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Based on these results, organic fertilizer @ 13 t ha-1 without chemical fertilizer could be recommended to increase lettuce yield as well as mitigate heavy metals in soil.”
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