Abstract
SummaryThe influence of irrigation and temperature regimes in the nursery on the dynamics of root development after being transplanted with minimum management conditions was investigated in Lotus creticus. In the nursery period (three months), plants were pot-grown in greenhouses, heated and unheated, located on the Southeast Mediterranean coast of Spain. Drip irrigation was used, with three irrigation treatments: T-6, plants watered 6.d a week at the water-holding capacity; T-3, plants watered 3.d a week; and T-2, plants watered twice a week. The total water applied over the whole nursery period was (in litres per plant): T-6, 7; T-3, 3.5; and T-2, 2.3. After the nursery period, plants were transplanted in a growth chamber into transparent containers (round acrylic tubes 8.cm diameter and 100.cm tall) and just one establishment irrigation was applied. Three treatments were applied, using three different amounts of water in the establishment irrigation: 10, 30 and 60.mm. The containers were kept in the growth chamber for one month, until the end of experiment. The harsher the conditions after transplanting (less water in the establishment irrigation) the more evident was the positive effect of hardening in the nursery. The regime involving least water and lowest temperature in the nursery period produced plants best adapted to stress at transplanting: a greater root length:shoot length ratio, higher percentage of brown roots and lower fresh weight:length ratio in shoots. All the plants survived transplanting. The most stressed plants in the nursery (least water and no heating) showed greater and more rapid root growth than the less stressed plants, especially when soil moisture was low.
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Claims 8
Claim · model-written summary
Nursery hardening helped more when transplant irrigation was lower.
- Taxon
- Lotus creticus
Lotus creticust0 - Treatment
- less water in the establishment irrigatione0
- Outcome
- positive effect of hardeninge0
- Direction
- more evidente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The harsher the conditions after transplanting (less water in the establishment irrigation) the more evident was the positive effect of hardening in the nursery.”
t0“Lotus creticus”
Claim · model-written summary
Least nursery water and lowest temperature produced plants best adapted to transplant stress.
- Taxon
- Lotus creticusLotus creticust0
- Treatment
- least water and lowest temperaturee0
- Outcome
- plants best adapted to stress at transplantinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The regime involving least water and lowest temperature in the nursery period produced plants best adapted to stress at transplanting: a greater root length:shoot length ratio, higher percentage of brown roots and lower fresh weight:length ratio in shoots.”
t0“Lotus creticus”
Claim · model-written summary
Hardened plants had a greater root length to shoot length ratio.
- Taxon
- Lotus creticusLotus creticust0
- Treatment
- least water and lowest temperaturee0
- Outcome
- root length:shoot length ratioe0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The regime involving least water and lowest temperature in the nursery period produced plants best adapted to stress at transplanting: a greater root length:shoot length ratio, higher percentage of brown roots and lower fresh weight:length ratio in shoots.”
t0“Lotus creticus”
Claim · model-written summary
Hardened plants had a higher percentage of brown roots.
- Taxon
- Lotus creticusLotus creticust0
- Treatment
- least water and lowest temperaturee0
- Outcome
- percentage of brown rootse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The regime involving least water and lowest temperature in the nursery period produced plants best adapted to stress at transplanting: a greater root length:shoot length ratio, higher percentage of brown roots and lower fresh weight:length ratio in shoots.”
t0“Lotus creticus”
Claim · model-written summary
Hardened plants had a lower shoot fresh weight to length ratio.
- Taxon
- Lotus creticusLotus creticust0
- Treatment
- least water and lowest temperaturee0
- Outcome
- fresh weight:length ratio in shootse0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The regime involving least water and lowest temperature in the nursery period produced plants best adapted to stress at transplanting: a greater root length:shoot length ratio, higher percentage of brown roots and lower fresh weight:length ratio in shoots.”
t0“Lotus creticus”
Claim · model-written summary
All plants survived transplanting.
- Taxon
- Lotus creticusLotus creticust0
- Outcome
- survived transplantinge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All the plants survived transplanting.”
t0“Lotus creticus”
Claim · model-written summary
Most stressed nursery plants showed greater root growth after transplanting.
- Taxon
- Lotus creticusLotus creticust0
- Treatment
- least water and no heatinge0
- Outcome
- root growthe0
- Direction
- greatere0
- Qualifier
- especially when soil moisture was lowe0
- Comparator
- less stressed plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most stressed plants in the nursery (least water and no heating) showed greater and more rapid root growth than the less stressed plants, especially when soil moisture was low.”
t0“Lotus creticus”
Claim · model-written summary
Most stressed nursery plants showed more rapid root growth after transplanting.
- Taxon
- Lotus creticusLotus creticust0
- Treatment
- least water and no heatinge0
- Outcome
- root growthe0
- Direction
- more rapide0
- Qualifier
- especially when soil moisture was lowe0
- Comparator
- less stressed plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most stressed plants in the nursery (least water and no heating) showed greater and more rapid root growth than the less stressed plants, especially when soil moisture was low.”
t0“Lotus creticus”