An integrated North Florida dairy farm model to reduce environmental impacts under seasonal climate variability

Victor E. Cabrera, Peter E. Hildebrand, James W. Jones, David Letson, Albert De Vries

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Dairies are challenged to comply with stricter environmental regulations and remain economically viable. This paper studies the potential use of ENSO-based climate forecasts to reduce N leaching without reducing profits on North Florida dairies. A model was created to perform the analyses, the Dynamic North Florida Dairy Farm Model (DyNoFlo). DyNoFlo is an integrated dynamic model that incorporates Markov-chain simulation of cow flows and crop model simulations for historical climatic years (El Niño, La Niña, and Neutral years). It also includes optimization of managerial options. It responds to dairy-specific environment (climate and soils) and management (livestock management, waste management, crop systems management). The DyNoFlo model was designed to be a tool for producers, regulatory agencies, and extension services in addition to a research tool. Analyzing a typical North Florida dairy farm, it was found that N leaching was highest during winter El Niño years. Sandy soils were substantially more prone to leach N, and perennial grasses were better to prevent N leaching. The typical farm could decrease N leaching up to 23% in an El Niño year and still maintain profit by adjusting protein in the diet, confinement time for milking cows, and combining perennial grasses and forages in pastures and sprayfields. Application of the DyNoFlo model to small, medium, and large dairy farms showed that they could decrease their N leaching by 9, 20, and 25%, respectively, without reducing profits by varying management strategies according to ENSO phases.

Original languageEnglish (US)
Pages (from-to)82-97
Number of pages16
JournalAgriculture, Ecosystems and Environment
Volume113
Issue number1-4
DOIs
StatePublished - Apr 2006

Fingerprint

dairy farming
leaching
environmental impact
climate
profits and margins
dairies
El Nino-Southern Oscillation
grasses
grass
environmental law
waste management
crop models
crop
dynamic models
livestock farming
sandy soils
dietary protein
Markov chain
sandy soil
dairy cows

Keywords

  • Dairy farm modeling
  • Ecologic simulation
  • Economic simulation
  • El Niño Southern Oscillation (ENSO)
  • Nitrogen leaching
  • Water pollution

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Ecology, Evolution, Behavior and Systematics
  • Ecology

Cite this

An integrated North Florida dairy farm model to reduce environmental impacts under seasonal climate variability. / Cabrera, Victor E.; Hildebrand, Peter E.; Jones, James W.; Letson, David; De Vries, Albert.

In: Agriculture, Ecosystems and Environment, Vol. 113, No. 1-4, 04.2006, p. 82-97.

Research output: Contribution to journalArticle

Cabrera, Victor E. ; Hildebrand, Peter E. ; Jones, James W. ; Letson, David ; De Vries, Albert. / An integrated North Florida dairy farm model to reduce environmental impacts under seasonal climate variability. In: Agriculture, Ecosystems and Environment. 2006 ; Vol. 113, No. 1-4. pp. 82-97.
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