Article (Scientific journals)
Potassium and phosphorus content ratio in hydroponic culture affects tomato plant growth and nutrient uptake
Naciri, Rachida; Rajib, Wiam; Chtouki, Mohamed et al.
2022In Physiology and Molecular Biology of Plants
Peer reviewed
 

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Keywords :
Phosphorus; Potassium; Nutrient interaction; Nutrient uptake; Nutrient use efficiency; Root morphology
Abstract :
[en] Mineral nutrient deficiencies induce a cascade of physiological, morphological, and biochemical changes in plants which reduce vegetative growth. In this work, the impact of P and K concentration levels on tomato plant development grown in hydroponic culture was investigated. Root morphology, chlorophyll a fluorescence, phosphorus (P) and potassium (K) content, and shoot and root biomass were analyzed. Root morphology showed significant differences among the plants grown in hydroponic culture with different concentrations of P and K. Plant root/shoot dry biomass ratio decreased by 22 and 35% for P15K0 and P30K0, respectively, compared to the control (P30K232). The deficiency of P and K (individually or both) reduced significantly the root mass density parameter. For example, root mass density decreased by 38% at P15K0 treatment compared to control. Correlation analysis showed that the P and K content ratio in shoot and root was significantly and positively correlated with root volume. Deficiencies in K and P decreased the relative size of the PSI final electron acceptor pool and the electron flow on the acceptor side of PSI. Tomato growth response depend on the availability of P and K, however, interactions between these two nutrients could influence their uptake and utilization.
Research Center/Unit :
UM6P
Disciplines :
Agriculture & agronomy
Author, co-author :
Naciri, Rachida
Rajib, Wiam
Chtouki, Mohamed  ;  Université de Liège - ULiège > TERRA Research Centre
Zeroual, Youssef
Oukarroum, Abdallah 
Language :
English
Title :
Potassium and phosphorus content ratio in hydroponic culture affects tomato plant growth and nutrient uptake
Publication date :
26 April 2022
Journal title :
Physiology and Molecular Biology of Plants
ISSN :
0971-5894
Publisher :
Springer Science and Business Media LLC
Peer reviewed :
Peer reviewed
Funders :
UM6P
Available on ORBi :
since 26 April 2022

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