Etude de l’effet de l’irrigation avec des eaux magnétisées sur la croissance, le rendement du piment et la salinisation du sol dans un environnement aride

Ibtihel  Jamil; fathia elmokh; Warda  Tlig; Kamel Nagaz

doi:10.56027/JOASD.312023

Authors

Ibtihel Jamil
fathia elmokh Institut des Régions Arides
Warda Tlig
Kamel Nagaz

DOI:

https://doi.org/10.56027/JOASD.312023

Keywords:

Saline water, magnetized water, pepper, yield, arid environment, irrigation scheduling

Abstract

This study examines the impact of magnetized irrigation water on pepper production and soil salinization in the arid zones of southern Tunisia. The aim of this is to better manage and enhance the use of saline water in the irrigation of pepper crop through irrigation scheduling and the use of magnetic treatment in order to reduce the risks of soil degradation and improve crop productivity. To this end, a field experiment was carried out in the region of Medenine. Pepper crop (cv. Baklouti) was transplanted on a sandy soil and drip-irrigated with a well water having an ECi of 7.3 dS.m^-1. Three irrigation treatments were considered. Two magnetic treatments consist of treating irrigation water with a magnetic field using two magnetizers Delta-Water and Magiko. For the third treatment (control), the water was not treated. Measurements includes soil moisture and salinity, leaf area index (LAI), relative water content. At harvest, the yield and its components (number of fruits/plant, weight of fruits/plant) were evaluated.

Results show that the practice of irrigation scheduling adapted to actual conditions keeps the soil moisture close to the field capacity for the three treatments. In addition, the irrigation management adopted and the amounts of rain received reduce the soil salinity. Magnetic treatments improve crop growth through the increase of leaf index. The increased growth is due to a significant improvement in the relative water content of the crop. These techniques result also in an increase in yield (20 and 22.4 t/ha) and its components and an improvement in fruit seize which reaches 10.3 g for plants treated with Magiko compared to 8.8 and 8.3 g, respectively, for DW and control treatments. The use of magnetic field to treat irrigation water could constitute a promising technique that allows using low quality water in agriculture while these results should be confirmed by long-term experiments and under different conditions.

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