Productivity, profitability and partial nutrient balance in maize-based conventional and organic farming systems in Kenya

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• 作者：Noah Adamtey^a ; ^{noah.adamtey@fibl.org} ; ^{adamteynoah@gmail.com} ; Martha W. Musyoka^b ; Christine Zundel^c ; Juan Guillermo Cobo^a ; Edward Karanja^b ; Komi K.M. Fiaboe^b ; Anne Muriuki^d ; Monicah Mucheru-Muna^e ; Bernard Vanlauwe^f ; Estelle Berset^a ; Monika M. Messmer^a ; Andreas Gattinger^a ; Gurbir S. Bhullar^a ; Georg Cadisch^g ; Andreas Fliessbach^a ; Paul Mä ; der^a ; Urs Niggli^a ; Dionys Foster^a
• 关键词：Organic farming systems ; conventional farming systems ; high-inputs ; low-inputs ; nutrient export ; partial nutrient balance
• 刊名：Agriculture, Ecosystems & Environment
• 出版年：2016
• 出版时间：1 November 2016
• 年：2016
• 卷：235
• 期：Complete
• 页码：61-79
• 全文大小：3508 K
• 卷排序：235

文摘

Maize based farming systems were compared for 6 years in Chuka and Thika in Kenya. High input organic system yields equal to conventional except in year 1 at Thika. Maize-bean intercrop in low input organic systems yielded as conventional one. High and low input organic production costs were higher than conventional ones, but. From year 5 organic was more profitable than conventional in the high input systems. Conventional systems exported more nutrients than organic systems.