Assessment of Irrigation Dynamics on Vegetable Production Safety in the Accra Metropolis

Abstract

This work assessed modes of irrigation on vegetable production in fifty (50) vegetable gardens from ten (10) sampled areas in the Accra Metropolis. Irrigation water sources include: pipe, segment, gutter, dug-well, dam, river, and drains. Demographic survey, nature of the surrounding of the water bodies, physico-chemical and microbiological analysis of irrigation waters were carried out and contrasted with standard values. The analysis of the parameters of various water samples was within the accepted standard values, except the Chemical Oxygen Demand (COD) value for the irrigation water from Opeibea (3020) and Kasoa (340), which were relatively high compared to standard value of 250. The faecal coliform counts for irrigation water at Abossey-Okai are also high (1150/100 ml) compared to the standard values of 1000/100 ml irrigation water. The vegetable farming was found to be a male dominated activity (86%), mostly practised by 21 -30 year age group (69%). However the education levels of farmers are low; 70% either do not have formal education or only up to primary education levels. A greater percentage (68%) of the water used for irrigation was waste water, mostly from gutters and segments. Proper management practices of effluent are recommended for vegetable production.

The bioactivities of the neem (seeds and leaves) against Callosobruchus maculatus on a Vigna Subterranean L.

“…Same trend was observed for the case of 1.0 g of the neem seeds oil. There was an increase in the percentage mortality count (0%, 47%, 70%, 100%) of C. maculatus as the concentration of the neem seed oil increased (0.0 g, 0.1 g, 0.5 g and 1.0 g, respectively) at 24 h. Similarly the % mortality counts of the pest were increased with the increasing amount of the neem seeds oil at 48 h, 72 h and 96 h. Within about 10 minutes, deaths of the pest were recorded mostly at higher amount of the neem material as similarly reported by another researcher [16]. On the neem leaves concentrate as well, the results (see Table 2) show that there is an increase in mortality of the weevils with time (24 h, 48 h, 72 h and 96 h, respectively) after their exposure to the neem leaves concentrate treated bambara groundnut.…”

“…There was a direct relationship between the amounts of the neem seeds oil and neem leaves concentrate with % mortality counts. In addition, the neem leaves concentrate and the neem seeds oil are comparatively effective in terms of the mortality counts against these weevils as previously reported [16]. More so, neem pesticides is relatively less toxic, environmentally friendly and effective substitutes of conventional pesticides for an integrated pest management [16,17].…”

“…In addition, the neem leaves concentrate and the neem seeds oil are comparatively effective in terms of the mortality counts against these weevils as previously reported [16]. More so, neem pesticides is relatively less toxic, environmentally friendly and effective substitutes of conventional pesticides for an integrated pest management [16,17]. Previously, it is found that the neem seeds oil showed some correlations between the death rates for the insect-pests as against the time and concentration levels [16].…”

“…More so, neem pesticides is relatively less toxic, environmentally friendly and effective substitutes of conventional pesticides for an integrated pest management [16,17]. Previously, it is found that the neem seeds oil showed some correlations between the death rates for the insect-pests as against the time and concentration levels [16]. The higher the concentration of the neem seed oil, the faster it killed the pests [16].…”

Synthese Bibliographique Sur Les Technologies De Maitrise De L’eau Pour Les Cultures Dans Les Zones Humides Tropicales

“…Les revenus qui en découlent permettent à plusieurs dizaines de milliers de familles de satisfaire leurs besoins. Les cultures maraîchères sont des sources importantes de vitamines, de minéraux et procurent d'importants revenus pour les personnes qui sont impliquées dans sa production et dans sa commercialisation (Sikirou et al, 2001; Achio et al, 2015). Cependant, les déficients entre la ressource disponible et la demande en eau, notamment agricole, sont devenus des préoccupations récurrentes dans de nombreuses régions du monde (Montginoul, 2011).…”