Yield and nutrient removal in potato-based conservation agriculture cropping systems in the high altitude andean region of Ecuador

Robert S. Gallagher, Richard Charles Stehouwer, Víctor Hugo Barrera Mosquera, Soraya Patricia Alvarado Ochoa, Luis Orlando Escudero López, Franklin Valverde, Arnufo Portilla, Katie Webber, Juan Manuel Domínguez Andrade

Research output: Contribution to journalArticle

Abstract

The Illangama region of Ecuador’s highlands is typical of much of the Andean region throughout South and Central America. Steep slopes, frequent soil disturbance and the short fallow periods threaten the sustainability of soil quality and crop production in this region. We evaluated several conservation agricultural practices, including deviation ditches, crop residue retention, and reduced tillage in the context of a potato (Sola-num tuberosum L.)–oat/vetch (Avena sativa L./Vicia sativa L.)–barley (Hordeum vulgare L.)–faba bean (Vicia faba L.) rotation from 2011 to 2014 on crop productivity, crop and soil nutrient concentration, and nutrient removal from the system. Crop productivity tended to be higher in plots that had deviation ditches, and where crop and cover residues were retained in the field. Reduced tillage systems had yields similar to conventional tillage systems in all crops. Retaining crop and cover crop residues in the field had the greatest impact on recycling nutrients back to the soil, but was also the most costly conservation practice that we evaluated. Overall, conservation agricultural practices showed considerable agronomic promise for cropping systems in the Illangama region of Ecuador, but will require a longer evaluation period and a comprehensive outreach plan to help gain acceptance with regional farmers. Retaining crop and cover crops residues in the field rather than for animal fodder will make the greatest contribution to soil nutrient cycling, but likely to be the least accepted conservation agriculture (CA) practice evaluated in this study.

Original languageEnglish (US)
Pages (from-to)1836-1848
Number of pages13
JournalAgronomy Journal
Volume109
Issue number5
DOIs
StatePublished - Sep 1 2017

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Andes region
Ecuador
cropping systems
potatoes
agriculture
nutrients
crops
crop residues
reduced tillage
cover crops
soil nutrients
tillage
Vicia sativa
outreach
conservation practices
Vicia
Avena sativa
faba beans
Vicia faba
Central America

All Science Journal Classification (ASJC) codes

  • Agronomy and Crop Science

Cite this

Gallagher, R. S., Stehouwer, R. C., Barrera Mosquera, V. H., Alvarado Ochoa, S. P., Escudero López, L. O., Valverde, F., ... Domínguez Andrade, J. M. (2017). Yield and nutrient removal in potato-based conservation agriculture cropping systems in the high altitude andean region of Ecuador. Agronomy Journal, 109(5), 1836-1848. https://doi.org/10.2134/agronj2016.11.0635
Gallagher, Robert S. ; Stehouwer, Richard Charles ; Barrera Mosquera, Víctor Hugo ; Alvarado Ochoa, Soraya Patricia ; Escudero López, Luis Orlando ; Valverde, Franklin ; Portilla, Arnufo ; Webber, Katie ; Domínguez Andrade, Juan Manuel. / Yield and nutrient removal in potato-based conservation agriculture cropping systems in the high altitude andean region of Ecuador. In: Agronomy Journal. 2017 ; Vol. 109, No. 5. pp. 1836-1848.
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Gallagher, RS, Stehouwer, RC, Barrera Mosquera, VH, Alvarado Ochoa, SP, Escudero López, LO, Valverde, F, Portilla, A, Webber, K & Domínguez Andrade, JM 2017, 'Yield and nutrient removal in potato-based conservation agriculture cropping systems in the high altitude andean region of Ecuador', Agronomy Journal, vol. 109, no. 5, pp. 1836-1848. https://doi.org/10.2134/agronj2016.11.0635

Yield and nutrient removal in potato-based conservation agriculture cropping systems in the high altitude andean region of Ecuador. / Gallagher, Robert S.; Stehouwer, Richard Charles; Barrera Mosquera, Víctor Hugo; Alvarado Ochoa, Soraya Patricia; Escudero López, Luis Orlando; Valverde, Franklin; Portilla, Arnufo; Webber, Katie; Domínguez Andrade, Juan Manuel.

In: Agronomy Journal, Vol. 109, No. 5, 01.09.2017, p. 1836-1848.

Research output: Contribution to journalArticle

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AU - Gallagher, Robert S.

AU - Stehouwer, Richard Charles

AU - Barrera Mosquera, Víctor Hugo

AU - Alvarado Ochoa, Soraya Patricia

AU - Escudero López, Luis Orlando

AU - Valverde, Franklin

AU - Portilla, Arnufo

AU - Webber, Katie

AU - Domínguez Andrade, Juan Manuel

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