Amélioration du sol dégradé par l’apport d’engrais inorganique, organiques et évaluation de rendement du maïs (<i>Zea mays</i> L.) dans la province de Lomami, République Démocratique du Congo

Abstract

R. M. TSHIBINGU et al. / Int. J. Biol. Chem. Sci. 11(2): 816-827, 2017 817 Improvement of soil degraded by inorganic fertilizer, organic matter and yield evaluation of maize (Zea mays L.) in Lomami province, Democratic Republic of Congo ABSTRACTThe study was carried out in Kabinda on a degraded soil that has received inputs from organic and mineral fertilizers in order to assess their effects on maize growth and production. The experiment was conducted during two crop years, season A and season B. Five treatments in four replicates consisted of one control (T0), four levels of fertilizer (inorganic and organic matter) supply: Entada abyssinica (T1), Tithonia diversifolia (T2) Sena floribunda (T3), and Diammonophosphate DAP (T4) were evaluated using a randomized complete block system (RCBD). The observations had related to the parameters of growth and production that underwent the analysis of variance (ANOVA) at 5% level of significance. The results obtained indicate that maize responded positively in the growth stage under the effect of fertilizing indiscriminately of their nature (p <0.05) compared with the control in the two growing seasons. The fertilizers accelerated vegetative growth and increased the yield from 40 to 80% of maize compared with the control of the cropping season indiscriminately. T. diversifolia gave higher seed yield 1398.1 kg / ha and control had lower seed yield 885.5 kg / ha in season A whereas in season B, DAP produced higher seed yield 3332.8 kg / ha and the control plot gave lower seed yield 1825.kg / ha. These organic fertilizers based on E. Abyssinica, T. diversifolia, and S. floribunda were noted for their high yield scores in season A and a non-significant difference in inorganic treatment in season B. These species can be considered as significant sources of soil fertilizer to improve maize yield.

Effets des biomasses vertes de <i>Tithonia diversifolia</i> et des engrais minéraux sur la croissance, le développement et le rendement du manioc (<i>Manihot esculenta</i> Crantz) en zone forestière du Cameroun

“…Ce système, qui peut paraître archaïque, était en fait extrêmement bien adapté aux conditions de faible densité de population qui prévalaient dans ces régions jusqu'à une date récente (Todan et al, 2017). Actuellement, l'augmentation de la population, la tendance à la sédentarisation et la sécheresse ont conduit à une forte augmentation des surfaces cultivées et à une diminution moyenne des temps de jachère (Bainville et Dufumier, 2007 ;Saidou et al 2009 ;Mukendi et al, 2017 ;Todan et al, 2017).…”

Characterization of Control Methods for Fall Armyworm (Spodoptera frugiperda J. E. Smith) in the Maize (Zea mays L.) Cropping Systems in Central Benin

“…For example, the practice of intercropping is an ancient practice used in traditional agricultural systems in Africa (Kafara, 2007), one of the advantages of which is to break the life cycle of pests, including insects. In addition, the use of biofertilizers is a practice of providing nutrients that have a long-term positive effect on soil properties and crop yield (Mukendi et al, 2017). In contrast to conventional pesticides, biopesticides have tremendous advantages including biodiversity preservation, target specificity, and biodegradability (Kumar et al, 2015).…”

Effets du compost enrichi de l’urine humaine sur le rendement de la pomme de terre (MANDOLA) dans la Commune Urbaine de Faranah/République de Guinée

“…La teneur du compost en NPK assimilable (397,5 ppm, 92,59 ppm 1198,5 ppm) est élevée par rapport à celle du sol de l'essai (190 ppm, 6,24 ppm et 583,27 ppm). Cela justifie la nécessité d'apporter du compost pour compenser le déficit d'éléments nutritifs pour la pomme de terre ce qui confirme les idées de Tshibingu et al (2017), Mounirou et al (2020) qui soulignent que l'apport au sol des fertilisants organiques stimule la croissance végétative des plants. La somme des bases échangeables « S » du compost (15,00 méq/100g) est deux (02) fois supérieure à celle du sol 7,30 méq/100g.…”