Study of the Interaction Salinity: Phosphorus Fertilization on Sorghum
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Study of the Interaction Salinity: Phosphorus Fertilization on Sorghum Amel Souhila Belouchrani1 · Mourad Latati1 · Sidi Mohamed Ounane1 · Nadjib Drouiche2,5 · Hakim Lounici3,4 Received: 12 October 2019 / Accepted: 28 November 2019 © Springer Science+Business Media, LLC, part of Springer Nature 2019
Abstract Soil salinity severely affects cultivation in arid and semi-arid regions. It causes, among other things, an imbalance in the mineral nutrition of plants which results in yields’ decrease. One of the research’s approaches to mitigate the effects of these constraints is to look at the interaction between sodium chloride and phosphorus. The aim is to study the action of phosphorus to reduce the harmful effects of salinity. This study was undertaken in a greenhouse, in a pot of vegetation. The model plant used is Sorghum (Sorghum vulgar var rocket). The interaction NaCl (S) × P is carried out with four concentrations of NaCl (S0 = 0.1 dS m−1, S1 = 2 dS m−1, S2 = 8 dS m−1, S3 = 32 dS m−1) and four doses of TSP (PO = 0 mg/pot, P1 = 200 mg/pot, P2 = 400 mg/pot, P3 = 819 mg/pot), that is 16 (SP) processing. The results obtained made it possible to identify the effect of the SP processing on the morphological parameters, on the assimilation of the NPK’s major elements, and on the accumulation of proline. They clearly showed that by adding phosphorus there was a remarkable improvement as the Sorghum displayed tolerance towards salinity. This improvement is manifested by an increase in stem height, dry material yield, nitrogen and phosphorus uptake, and proline accumulation. The results obtained suggest that Sorghum culture in saline medium (EC ≤ 32 dS m−1) is possible. Keywords Soil salinity · Sorghum culture · Phosphorus intake · Nitrogen uptake
Introduction An ideal and sustainable agricultural system is one that protects the environment and produces enough food for a growing world population. By 2050, the global population will be 9.7 billion, placing an unprecedented burden on the world’s soils to maximize food yields (Magnonea et al 2017). One of the most important constraints for agricultural production in the world is soil salinity. Salinity can be defined as any excessive ion content, it can occur in the soil as well as in water. Salty soils ones are those which contain, in unusually * Nadjib Drouiche [email protected] 1
Plant Production Department, High National School of Agronomy, El Harrach, Algiers, Algeria
2
Centre de Recherche en Technologie des Semi-conducteurs pour l’Energétique (CRTSE), 2, Bd Dr. Frantz Fanon, Algiers‑7 Merveilles, P.O. Box 140, 16038 Algiers, Algeria
3
MDD, Université de Bouira, Pôle technologique, Bouira, Algeria
4
CRAPC, Tipaza, Algeria
5
University of Blida 1, Soumaa, Algeria
large amounts, more soluble salts than gypsum. Salty soils have electrical conductivities greater than 4 dS m−1 equivalent to approximately 40 mM NaCl (2.5 g/l) and generate osmotic pressure equivalent to 0.2 MP. This definition of salinity stems from the EC, which significantly
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