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Istituto Agronomico Mediterraneo di Bari (IAMB) 2021

The effect of smart irrigation and fertility management practices on rice cultivation in Burkina Faso

Nacro, Sadya Roseline

Titre : The effect of smart irrigation and fertility management practices on rice cultivation in Burkina Faso

Auteur : Nacro, Sadya Roseline

Etablissement de soutenance : Istituto Agronomico Mediterraneo di Bari (IAMB) - Centre international de hautes études agronomiques méditerranéennes (CIHEAM)

Grade : Master of science : Land and water resource management : irrigated agriculture 2021

Résumé
Climate change and declining water resources are threatening rice production in Burkina Faso. Alternate wetting and drying (AWD) irrigation system is a promising water-saving technology to integrate appropriate soil fertility practices and has application potential for rice. Hence, a field experiment was carried out at Bagré, located in the central-eastern area of Burkina Faso during the dry season of 2021, to assess the effects of AWD and Urea deep placement (UDP) system on rice production. A randomized complete block design was applied with 2 experimental units : AWD and Continuous Flooding (CF), combined with 4 fertilization treatments : T0 = control ; T1= 72 kg/Ha as urea (broadcast) ; T2 = 113kg/Ha as urea (broadcast) ; T3 = 112.5 kg/Ha as urea super granules (UDP) ; and T4 = 72 kg/Ha as urea super granules (UDP), and grouped into three replicates. AWD and CF treatments showed no significance on plant growth, grain yield, leaf nitrogen (N), and chlorophyll content . On the contrary, the interaction effect of the AWD irrigation system and the fertilizer treatments showed a significant impact on plant growth and grain yield. T4 trial, one with the lowest rate of urea super granule (72 kg/Ha), provided a higher yield under AWD than the CF system. The N leaf significantly increased by combination with UDP treatment and AWD compared to that with CF. Leaves chlorophyll content also increased dramatically under fertilizer treatments and T2 showed the highest value under the two irrigation systems. AWD combined with the UDP system effectively increases grain yield and reduces environmental risks to paddy fields.

Mots clés : ALTERNATING WETTING AND DRYING CONTINUOUS FLOOD GRAIN LEAF AREA NITROGEN CONTENT RICE UREA DEEP PLACEMENT YIELDS

Présentation (IAMB Library)

Page publiée le 25 mars 2022