Article (Scientific journals)
Phosphorus fertilizer form and application frequency affect soil P availability, chickpea yield, and P use efficiency under drip fertigation
Chtouki, Mohamed; Naciri, Rachida; Garré, Sarah et al.
2022In Journal of Plant Nutrition and Soil Science
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Keywords :
Plant Science; Soil Science; Phosphorus; Fertigation; Fertilizer; Polyphosphate; Orthophosphate
Abstract :
[en] Phosphorus (P) fertilizer properties and nutrient management strategies substantially affect soil P availability as well as uptake and consequently crop yield. The present study aims to study the potential use of inorganic soluble polyphosphates (Poly‐P) as slow‐release fertilizer under drip fertigation. A pot experiment was conducted using an alkaline soil. Two Poly‐P fertilizers, differing in their polymerization rate (Poly‐53 with 53% and Poly‐100 with 100% Poly‐P of the total‐P content), were compared to an orthophosphate (Ortho‐P) and a treatment without P application (control) under three drip fertigation frequencies (Fsow: P fertilizer applied at sowing, Fweek: once a week, and F3days: every 3 days). Soil samples were taken at 40 days after sowing and at harvest from 3 layers (0–5, 5–10, and 10–20 cm) to determine P availability in soil (Olsen‐P) and its relocation into deeper soil layers. Furthermore, plant growth, yield, P uptake, P use efficiency, as well as water productivity were investigated. Soil P availability varied significantly between fertilizer forms and fertigation frequencies. At higher polymerization rate of the Poly‐P fertilizer, P becomes less mobile in the soil, but its availability is maintained until harvest. The analysis of Olsen‐P at harvest showed that the higher P availability in soil was obtained with Poly‐P forms with higher values in the 0–5 and 5–10 cm soil layers than in the 10–20 cm. In addition, weekly fertigation (Fweek) revealed the best results in terms of P availability compared to other P fertigation regimes, and all P fertilizers significantly improved chickpea grain yield, seed quality, and water productivity, compared to the unfertilized control. Poly‐P fertilizers can be recommended as an effective source of phosphorus for plants, due to their slow‐release properties. Using Poly‐P, the frequency of P application through the drip fertigation system can be reduced while ensuring high crop yields.
Disciplines :
Agriculture & agronomy
Author, co-author :
Chtouki, Mohamed  ;  Université de Liège - ULiège > TERRA Research Centre ; Plant Stress Physiology Laboratory University Mohammed VI Polytechnic‐AgoBioSciences Benguerir Morocco
Naciri, Rachida;  Plant Stress Physiology Laboratory University Mohammed VI Polytechnic‐AgoBioSciences Benguerir Morocco
Garré, Sarah;  Water, Soil & Plant Exchanges Biosystem Engineering University of Liege‐Gembloux Agro‐Bio Tech Faculty Gembloux Belgium ; Flanders Research Institute for Agriculture Fisheries and Food (ILVO) Melle Belgium
Nguyen, Frédéric ;  Université de Liège - ULiège > Département ArGEnCo > Géophysique appliquée
Zeroual, Youssef;  Plant Stress Physiology Laboratory University Mohammed VI Polytechnic‐AgoBioSciences Benguerir Morocco
Oukarroum, Abdallah;  Plant Stress Physiology Laboratory University Mohammed VI Polytechnic‐AgoBioSciences Benguerir Morocco
Language :
English
Title :
Phosphorus fertilizer form and application frequency affect soil P availability, chickpea yield, and P use efficiency under drip fertigation
Publication date :
01 September 2022
Journal title :
Journal of Plant Nutrition and Soil Science
ISSN :
1436-8730
eISSN :
1522-2624
Publisher :
Wiley
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
SoilPhorLife
Available on ORBi :
since 05 September 2022

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