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Effects of weed control and manure application on nutrient fluxes in the shifting cultivation milpa system of Yucatan

Citation

Parsons, D and Ketterings, QM and Cherney, JH and Blake, RW and Ramirez-Aviles, L and Nicholson, CF, Effects of weed control and manure application on nutrient fluxes in the shifting cultivation milpa system of Yucatan, Archives of Agronomy and Soil Science, 57, (3) pp. 273-292. ISSN 0365-0340 (2011) [Refereed Article]


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Copyright Statement

Copyright 2011 Taylor & Francis

DOI: doi:10.1080/03650340903307236

Abstract

Maize (Zea mays L.) cultivation under the shifting cultivation system of Yucata´ n, Mexico, is normally limited to 2–3 years due to nutrient depletion and weed pressure. This study was undertaken to evaluate the effect of manure application and weed control on partial nutrient budgets for maize, and assess the effect of grain-only or whole-plant harvest on nutrient removal. Two farms were selected near Me´rida, Mexico, each including two cultivation years. Maize grain, stem, and leaf fractions were harvested and analyzed for N, P, and K concentrations, and compared to quantities added through manure, to generate partial nutrient budgets. Multiple years of cultivation did not change soil organic matter content while extractable P was reduced (53–62%) at both farms and extractable K was lower (22%) for farm 1. Plant fractions contained similar amounts of N, while P accumulated in grain, and stem and leaf contained the largest K pools. Applied treatments affected crop nutrient removal redominantly through crop yield. Partial nutrient budgets suggested that with stover removal, the lower rate of manure may be sufficient to maintain P, but not N or K; whereas with the higher rate of manure all partial budgets were positive, suggesting nutrient accumulation over time.

Item Details

Item Type:Refereed Article
Keywords:manure; nutrient budgets; weed control; organic fertilization
Research Division:Agricultural and Veterinary Sciences
Research Group:Crop and Pasture Production
Research Field:Agronomy
Objective Division:Plant Production and Plant Primary Products
Objective Group:Winter Grains and Oilseeds
Objective Field:Oats
Author:Parsons, D (Dr David Parsons)
ID Code:52663
Year Published:2011
Web of Science® Times Cited:1
Deposited By:Agricultural Science
Deposited On:2008-08-01
Last Modified:2017-10-31
Downloads:1 View Download Statistics

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