Abstract
Mexico has dominated the international mango trade having high yields and excellent fruit quality. The use of soil, plant and environmental sensors can monitor plant hydric status and optimize water application. Linear resistance dendrometers were developed and installed in a high-density 8-year old commercial mango orchard during two seasons; 10 in 2019 and 40 in 2020. Stem diameter fluctuations were acquired every 10 minutes to obtain maximum diameter (MXD), minimum diameter (MND), morning slope (MS) and afternoon slope (AS). Mango stem response during flowering, fruit-fall and fruit-growth was analyzed after applying daily irrigation (DI) or reduced deficit irrigation (RDI). Yield was similar for both treatments, but water use efficiency was higher with deficit irrigation. A new variable known as negative integral (NI) was obtained from the dendrometer signature after adding all the values between 8:00 and 18:00. NI provided a stem shrinkage magnitude, peaks attributed to transpiration and slopes showing flow transport to and from the trunk. NI presented a high correlation of 0.85 against T7 during the flowering stage for RDI-1. If NI crossed zero, a severe stress was present; a high AS present in the evening, indicates nutrient solution provided to fruits. Fruit yield depends on panicle number and fruit-drop during the first production stages, being RDI-1 more efficient in retaining fruits.
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Claims 8
Claim · model-written summary
Yield was similar under daily and reduced deficit irrigation.
- Taxon
- Mango
_from_India.jpg?width=60)
Mangifera indicat0 - Treatment
- reduced deficit irrigation (RDI)e1
- Outcome
- Yielde0
- Direction
- similare0
- Comparator
- daily irrigation (DI)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_from_India.jpg?width=500)
Verbatim
e0“Yield was similar for both treatments”
e1“daily irrigation (DI) or reduced deficit irrigation (RDI)”
t0“Mango”
Claim · model-written summary
Water use efficiency was higher under deficit irrigation.
- Taxon
- MangoMangifera indicat0
- Treatment
- deficit irrigatione0
- Outcome
- water use efficiencye0
- Direction
- highere0
- Comparator
- daily irrigation (DI)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water use efficiency was higher with deficit irrigation”
e1“daily irrigation (DI) or reduced deficit irrigation (RDI)”
t0“Mango”
Claim · model-written summary
The NI variable captured stem shrinkage, transpiration peaks, and transport slopes.
- Taxon
- MangoMangifera indicat0
- Outcome
- stem shrinkage magnitude, peaks attributed to transpiration and slopes showing flow transporte0
Not reportedValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NI provided a stem shrinkage magnitude, peaks attributed to transpiration and slopes showing flow transport to and from the trunk.”
t0“Mango”
Claim · model-written summary
NI correlated 0.85 with T7 at flowering under RDI-1.
- Taxon
- MangoMangifera indicat0
- Organ / stage
- flowering stagee0
- Treatment
- RDI-1e0
- Outcome
- correlatione0
- Value
- 0.85e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NI presented a high correlation of 0.85 against T7 during the flowering stage for RDI-1.”
t0“Mango”
Claim · model-written summary
NI crossing zero indicated severe stress.
- Taxon
- MangoMangifera indicat0
- Outcome
- severe stresse0
- Qualifier
- NI crossed zeroe0
Not reportedTreatmentDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“If NI crossed zero, a severe stress was present”
t0“Mango”
Claim · model-written summary
A high evening AS indicated nutrient solution delivery to fruit.
- Taxon
- MangoMangifera indicat0
- Organ / stage
- fruitse0
- Outcome
- nutrient solution provided to fruitse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a high AS present in the evening, indicates nutrient solution provided to fruits”
t0“Mango”
Claim · model-written summary
Fruit yield depended on panicle number and early fruit drop.
- Taxon
- MangoMangifera indicat0
- Organ / stage
- paniclee0
- Outcome
- Fruit yielde0
- Qualifier
- fruit-drop during the first production stagese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit yield depends on panicle number and fruit-drop during the first production stages”
t0“Mango”
Claim · model-written summary
RDI-1 retained fruits more efficiently.
- Taxon
- MangoMangifera indicat0
- Treatment
- RDI-1e0
- Outcome
- retaining fruitse0
- Direction
- more efficiente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RDI-1 more efficient in retaining fruits”
t0“Mango”
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