Abstract
African Crop Science Journal Vol.5. No.2, pp. 159-166 1997 Water Stress Effects on Plantain (MUSA sp. aab) Suckers Grown Under Varying Nitrogen and Watering Regimes K. P. BAIYERI Code Number: CS96053 Sizes of Files: Text: 21K Graphics: Tables (gif) - 52.9K ABSTRACT Plantain suckers (Musa sp.) raised under four nitrogen rates (0, 100, 200 and 300 kg ha^-1) and three watering intervals (6, 9, 12 days) were subjected to water stress in a glasshouse experiment. Nitrogen rates did not significantly affect growth before water stress. After water stress induction, suckers grown with 300 kg ha^-1 produced more photosynthetically active leaves, larger leaf area and thicker pseudostems. Nitrogen at 200 kg ha^-1 resulted in highest total dry matter accumulation while 100 kg ha^-1 favoured more root development. Frequently watered plants (6-day interval) initially produced more leaves which were not sustained during the water stress, but the 9-day watering intervald higher total number of leaves and taller suckers after water stress. Suckers watered at 12-day intervalid higher leaf nitrogen content and leaf dry matter than other watering regimes. A positive relationship between dry matter production and nitrogen rates after water stress was observed. Suckers raised with 200 kg ha^-1 and watered at 9-day interval were more vigorous and tolerant to water stress. This combination is recommended as a practice for raising plantain suckers in areas where dry seasons are unavoidable after field establishement. Key Words: Assimilate partitioning, fertilizer effect, growth responses, stress tolerance Resume Les rejets de plantain (Musa sp.) eleves sous 4 nivaux d'azote (0, 100, 200 et 300 kgN/ha) et 3 intervalles d'eau (6,9,12 jours) etaient soumis au stress d'eau sous serre experimentale vitree. Les taux d'azote n'ont pas significativement affecte la croissance avant le stress en eau. Apres l'induction du stress d'eau, les rejets plantes avec 300 kg de N/ha produisaient de feuilles plus larges et plus actives photosynthetiquement et des pseudotroncs plus epais. 200 kg de N/ha permettaient l'accumulation de la plus grande quantite de matiere seche alors que 100 kg de N/ha favorisait le developpement des racines. Les intervalles d'eau de 6 jours produisaient au debut plus de feuilles qui n'etaient plus soutenues durant le stress d'eau, mais 9 jours d'intervalles d'eau produisaient le nombre total des feuilles le plus eleve et des rejetons plus grands apres les stress d'eau. Les rejetons arroses tous les 12 jours d'intervalle avaient des feuilles avec le niveau d'et de matiere seche le plus eleve que les autres regimes d'arrosage. Un rapport positif entre la production de matiere seche et le taux d'apres le stress d'eau etait observe. Les rejets eleves avec 200 kg de N/ha et arroses tous les 9 jours d'intervalle etaient plus vigoureux et tolerant au stress d'eau. Cette combinaison etait recommandee comme une pratique de dressage de rejetons de plantain le ou les saisons seches sont inevitables apres leur etablissement au champ. Mots Cles: Repartition d'assimilates, effet d'engrais, reponses e la croissance, tolerance au stress Copyright 1997 The African Crop Science Society
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Claims 10
Claim · model-written summary
Nitrogen rate did not significantly affect plantain sucker growth before water stress.
- Treatment
- Nitrogen ratese0
- Outcome
- growthe0
- Direction
- did not significantly affecte0
- Qualifier
- before water stresse0
MusaNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen rates did not significantly affect growth before water stress”
e1“Plantain suckers (Musa sp.)”
Claim · model-written summary
After water stress, 300 kg ha^-1 nitrogen produced more active leaves, larger leaf area and thicker pseudostems.
- Treatment
- 300 kg ha^-1e0
- Outcome
- photosynthetically active leaves, larger leaf area and thicker pseudostemse0
- Direction
- moree0
- Qualifier
- After water stress inductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After water stress induction, suckers grown with 300 kg ha^-1 produced more photosynthetically active leaves, larger leaf area and thicker pseudostems”
e1“Plantain suckers (Musa sp.)”
Claim · model-written summary
Nitrogen at 200 kg ha^-1 yielded the highest total dry matter accumulation.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen at 200 kg ha^-1 resulted in highest total dry matter accumulation”
e1“Plantain suckers (Musa sp.)”
Claim · model-written summary
Nitrogen at 100 kg ha^-1 favored root development.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“100 kg ha^-1 favoured more root development”
e1“Plantain suckers (Musa sp.)”
Claim · model-written summary
Six-day watering initially produced more leaves, but this was not sustained during water stress.
- Treatment
- 6-day intervale0
- Outcome
- leavese0
- Direction
- moree0
- Qualifier
- not sustained during the water stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Frequently watered plants (6-day interval) initially produced more leaves which were not sustained during the water stress”
e1“Plantain suckers (Musa sp.)”
Claim · model-written summary
Nine-day watering gave the highest total leaf number and taller suckers after water stress.
- Treatment
- 9-day wateringe0
- Outcome
- total number of leaves and taller suckerse0
- Direction
- highere0
- Qualifier
- after water stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 9-day watering intervald higher total number of leaves and taller suckers after water stress”
e1“Plantain suckers (Musa sp.)”
Claim · model-written summary
Twelve-day watering gave higher leaf nitrogen and leaf dry matter than other watering regimes.
- Treatment
- 12-day intervale0
- Outcome
- leaf nitrogen content and leaf dry mattere0
- Direction
- highere0
- Comparator
- other watering regimese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Suckers watered at 12-day intervalid higher leaf nitrogen content and leaf dry matter than other watering regimes”
e1“Plantain suckers (Musa sp.)”
Claim · model-written summary
Dry matter production was positively related to nitrogen rate after water stress.
- Treatment
- nitrogen ratese0
- Outcome
- dry matter productione0
- Direction
- positivee0
- Qualifier
- after water stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A positive relationship between dry matter production and nitrogen rates after water stress was observed”
e1“Plantain suckers (Musa sp.)”
Claim · model-written summary
Plantain suckers raised with 200 kg ha^-1 nitrogen and nine-day watering were more vigorous and water-stress tolerant.
- Treatment
- 200 kg ha^-1 and watered at 9-day intervale0
- Outcome
- vigorous and tolerant to water stresse0
- Direction
- moree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Suckers raised with 200 kg ha^-1 and watered at 9-day interval were more vigorous and tolerant to water stress”
e1“Plantain suckers (Musa sp.)”
Claim · model-written summary
The authors recommend 200 kg ha^-1 nitrogen and nine-day watering to raise plantain suckers where dry seasons follow establishment.
- Taxon
- plantainMusa ABB Groupe0
- Treatment
- 200 kg ha^-1 and watered at 9-day intervale1
- Outcome
- raising plantain suckerse0
- Qualifier
- areas where dry seasons are unavoidable after field establishemente0
Verbatim
e0“This combination is recommended as a practice for raising plantain suckers in areas where dry seasons are unavoidable after field establishement”
e1“Suckers raised with 200 kg ha^-1 and watered at 9-day interval”
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