African perspective of chemical usage in agriculture and horticulture—their impact on human health and environment

Warra, Aliyu Ahmad; Prasad, Majeti Narasimha Vara

doi:10.1016/b978-0-08-103017-2.00016-7

Cited by 52 publications

(21 citation statements)

References 31 publications

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“…Intensification of food production to meet the rising food demand is associated with depletion of soil fertility (Kopittke et al, 2019), which results in the misuse of fertilizers and pesticides (Warra and Prasad, 2020), that serves the unsustainable goal of eliminating competition from pests and pathogens (Karoney et al, 2020), while trying to attain dominance in food markets (Gonzalez, 1999;Chalam et al, 2020). The result of such unsustainable practices is increased costs of production (Adolph et al, 2020), amidst a resource depleted and polluted agroecosystem that is toxic to human health and biodiversity (Mahmud et al, 2020;Warra and Prasad, 2020). These are among the reasons behind the constitution of the United Nations Sustainable Development Goals (SDGs), and in particular, to end hunger, achieve food security and improved nutrition, and promote sustainable agriculture (SDG2) (ICSU, 2017).…”

Section: Introductionmentioning

confidence: 99%

Rhizobium-Linked Nutritional and Phytochemical Changes Under Multitrophic Functional Contexts in Sustainable Food Systems

Ochieno

Karoney

Muge

et al. 2021

Front. Sustain. Food Syst.

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Rhizobia are bacteria that exhibit both endophytic and free-living lifestyles. Endophytic rhizobial strains are widely known to infect leguminous host plants, while some do infect non-legumes. Infection of leguminous roots often results in the formation of root nodules. Associations between rhizobia and host plants may result in beneficial or non-beneficial effects. Such effects are linked to various biochemical changes that have far-reaching implications on relationships between host plants and the dependent multitrophic biodiversity. This paper explores relationships that exist between rhizobia and various plant species. Emphasis is on nutritional and phytochemical changes that occur in rhizobial host plants, and how such changes affect diverse consumers at different trophic levels. The purpose of this paper is to bring into context various aspects of such interactions that could improve knowledge on the application of rhizobia in different fields. The relevance of rhizobia in sustainable food systems is addressed in context.

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Section: Introductionmentioning

confidence: 99%

Rhizobium-Linked Nutritional and Phytochemical Changes Under Multitrophic Functional Contexts in Sustainable Food Systems

Ochieno

Karoney

Muge

et al. 2021

Front. Sustain. Food Syst.

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“…Achieving global food security is a complex problem arising from a number of challenges such as increasing population, climate change, and urbanization 1–3 . To maintain or increase crop yields, chemical fertilizers have historically been mismanaged, resulting in environmental pollution and decreased nutrient‐use efficiency 4–6 . Excessive use of N fertilizers has become a major challenge for sustainable intensive agriculture in China, 7,8 causing high greenhouse‐gas emissions, nitrate‐N content in groundwater and drinking water and residual N in soil 9,10 .…”

Section: Introductionmentioning

confidence: 99%

Impacts of nitrogen practices on yield, grain quality, and nitrogen‐use efficiency of crops and soil fertility in three paddy‐upland cropping systems

LIU

Chen

et al. 2020

J Sci Food Agric

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BACKGROUND Global food security faces a number of challenges due to increasing population, climate change, and urbanization, while excessive use of nitrogen fertilizers has become a major challenge for sustainable, intensive agriculture. Assessing the impact of agronomic management practices on seed yield, grain quality, and soil fertility is a critical step in understanding nutrientuse efficiency. RESULT The comprehensive evaluation index had good fitness to that of single attribute (i.e. seed yield, crop quality and soil fertility), indicating that the comprehensive evaluation index was reliable. Applying controlled‐release urea (rice in wheat and oilseed rape field: 150 kg N ha−1, other crops: 120 kg N ha−1) plus common urea (30 kg N ha−1) incorporating straw from the previous season across the growing season for cereal and oilseed crops showed a slight improvement in seed productivity and Nuse efficiency among three cropping systems in the traditional evaluation method. Compared with local farm practice (applying common urea of 150 kg N ha−1), applying these practices in combination based on the outcome of the comprehensive evaluation index method decreased the seed yield by −1.27 ~ 29.8% but improved quality and soil fertility for the paddy‐upland cropping system, respectively. CONCLUSION Properly managing N application by applying partial and fully controlled release of urea with or without straw incorporation for a specific crop system has the potential to provide a better compromise among yield, grain quality, and soil fertility in southern China. © 2020 Society of Chemical Industry

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“…In the hopes of obtaining higher yields, farmers of developing countries such as Sri Lanka, have been over using these inorganic fertilizers for a prolonged period of time. This is also a common issue for countries that follow fertilizer usage through a subsidy scheme such as Africa (Warra et al 2020) and Sri Lanka (Ekanayake.H.K.J 2009). Further considerations were made on, disobedient farmer's lack of knowledge and inflexibility towards understanding, have lead into negative environment and health impacts was discussed with the interviewees.…”

Section: Interview Series; Consultant Nephrologists and Doa Provincial Directorsmentioning

confidence: 99%

Resource Optimization in Paddy Cultivation, for Developing Countries; A Sector Synergetic Approach

Madhavika¹,

Nagendrakumar²,

Colombathanthri³

et al. 2021

Alinteri

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The misleading fallacy of, higher the chemical fertilizer higher the yield therefore, better the income be. Have triggered in an over usage of chemical fertilizer more than the recommend standard. This has created in a self-pressuring situation among farmers in developing countries. This vulnerability occasionally leads into a decision-making situation where both life and death are seen as viable options. Hence in order to safeguard the farmer, with the aims of educating these disobedient farmers, through the process of validating the existing chemical fertilizer standard. This research was carried forth in Sri Lanka, for the paddy farmer. The data were collected in a data triangulation, where a controlled experiment, two series of interviews and two sets of questioners were utilized. Both, quantitative as well as qualitative data and, primary as well as secondary data were collected. Depending on the nature of the data collection instrument, an experiment, thematic, descriptive and a correlation analysis were performed through statistical software applications. Further, a yield and a soil test was performed for the controlled experiment plots. By adjusting the parameters accordingly, this study could be used as a model by other countries, regions or crops. Finally concluding on a policy implication, to eliminate or reducing the chemical fertilizer over usage in developing countries. Further avenues for a managerial implication where the Balance of Payment could be used to positively stimulating a developing countries Gross Domestic Product to achieve sustainable economic growth in the long run are discussed.

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African perspective of chemical usage in agriculture and horticulture—their impact on human health and environment

Cited by 52 publications

References 31 publications

Rhizobium-Linked Nutritional and Phytochemical Changes Under Multitrophic Functional Contexts in Sustainable Food Systems

Rhizobium-Linked Nutritional and Phytochemical Changes Under Multitrophic Functional Contexts in Sustainable Food Systems

Impacts of nitrogen practices on yield, grain quality, and nitrogen‐use efficiency of crops and soil fertility in three paddy‐upland cropping systems

Resource Optimization in Paddy Cultivation, for Developing Countries; A Sector Synergetic Approach

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