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Agriculture And The Environment, Maize Systems.

Samwelbii70@gmail.com
By [email protected] | self meida writer
Published 28 days ago - 2 views

DMaize has expanded through the 20th and into 21st Century to become the principle staple food crop produced and consumed in Sub-Saharan Africa(SSA).Maize production has also expanded in South Asia(SA) farming systems.In this brief we examine the environmental constaints to,and impacts of smallholder maize production systems in SSA and SA,noting where findings apply to only one of these regions.We highlight crop-environment interactions on three stages of maize value chain.Pre-production(e.g.land clearing),production(e.g.fertilizer,water,and other input use) and post-production(e.g.waste disposal and crop storage).

Evidence on environmental constraints and impacts in small Holder maize production is uneven.Many environmental concern such as biodiversity loss are commonly demonstrated more broadly for agroecology or farming systems in which maize is grown,rather than specifically for the maize crop.Decisive constraints and impact estimate are further complicated by the fact that many crop environment interactions in maize and other crops are a matter of both cause and effect(e.g.poor soils,decrease maize yields,while repeated maize harvests degrade soils).Fully understanding maize-environmental interactions thus requires recognizing instances where short-term adaptations to environmental constraints might be exacerbating other medium-or long-term environmental problems.

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21st Century DMaize Maize Systems SA SSA
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