Publications Scientifiques

[ Article ] Influence of soil conservation practices on soil moisture and maize crop (Zea mays L.) productivity in Centre Benin

Date de soumission: 11-05-2020
Année de Publication: 2020
Entité/Laboratoire Laboratoire de Microbiologie des Sols et d'Ecologie Microbienne (LMSEM)
Document type : Article
Discipline(s) : Sciences du sol
Titre Influence of soil conservation practices on soil moisture and maize crop (Zea mays L.) productivity in Centre Benin
Auteurs AKPLO Tobi Moriaque [1], KOUELO ALLADASSI FÉLIX [2], AHOGLE AGASSIN Arcadius [3], HOUNGNANDAN PASCAL [4], AZONTONDE ANASTASE [5], BENMANSOUR MONCEF [6], RABESIRANANA NAIVO [1], FULAJTAR Emil [1],
Journal: African Journal of Plant Science
Catégorie Journal: Africaine
Impact factor: 0
Volume Journal: 14
DOI: DOI: 10.5897/AJPS2019.1927
Resume This study aimed at determining the sustainable soil conservation practices that would increase maize crop growth as well as production and improve the soil quality. Two experimental sites were selected: Dan located on Acrisol and Za-zounmè located on ferralsol. Two cropping seasons were investigated: the long rain season of 2018 and 2019. The experimental design was split-plot with four replications. The main factor was tillage: no-tillage (NT); ridging parallel to the slope (PR); Isohypse ridging (IR) and the second factor was mulching with four amounts: 0 t.ha-1; 3 t.ha-1; 5 t.ha-1 and 7 t.ha-1. Tillage, mulch amounts and their interaction significantly (p<0.05) influenced the soil moisture, maize growth and yield over the two cropping seasons at both sites whereby the highest values were obtained under treatments IR (for tillage) and 7 t.ha-1 (for mulch amount) and treatment IR7M (for the interaction tillage x mulch amount). Overall, treatment IR significantly (p<0.05) increased the maize growth speed by 8% at Dan and by 16% at Za-zounmè; the maize grain yield by 33% at Dan and by 30% at Za-zounmè and the soil moisture by 24% at Dan and 20% at Za-zounmè, in comparison with No-Tillage. An increase effect of mulch amount was also observed on maize growth speed, maize grain yield as well as soil moisture. The highest values (in average of LR2018 and LR2019) of growth speed (3.77 cm.day-1 at Dan and 4.08 cm.day-1 at Za-zounmè); grain yield (3003.03 kg.ha-1 at Dan and 3471.09 kg.ha-1 at Za-zounmè) and soil moisture (26.89 mm at Dan and 20.44 mm at Za-zounmè) were observed. This suggests that isohypse ridging associated with organic mulching could be an option to mitigate dry spells and drought and improve local farmers’ income in the area with low rainfall in sub-Sahara Africa.
Mots clés Key words: Crop residues, tillage practices, conservation agriculture, food security, watershed of Zou.
Pages 8 - 22
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