+ Site Statistics
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Basic principles of agroecology and sustainable agriculture

, : Basic principles of agroecology and sustainable agriculture. Journal of Agricultural & Environmental Ethics 6(1): 1-19

In the final analysis, sustainable agriculture must derive from applied ecology, especially the principle of the regulation of the abundance and distribution of species (and, secondarily, their activities) in space and time. Interspecific competition in natural ecosystems has its counterparts in agriculture, designed to divert greater amounts of energy, nutrients, and water into crops. Whereas natural ecosystems select for a diversity of species in communities, recent agriculture has minimized diversity in favour of vulnerable monocultures. Such systems show intrinsically less stability and resilience to perturbations. Some kinds of crop rotation resemble ecological succession in that one crop prepares the land for successive crop production. Such rotations enhance soil organic processes such as decomposition and material cycling, build a nutrient capital to sustain later crop growth, and reduce the intensity of pest buildup. Species in natural communities occur at discrete points along the r-K continuum of reproductive maturity. Clearing forested land for agriculture, rotational burning practices, and replacing perennial grassland communities by cereal monocultures moves the agricultural community towards the r extreme. Plant breeders select for varieties which yield at an earlier age and lower plant biomass, effectively moving a variety towards the r type. Features of more natural landscapes, such as hedgerows, may act as physical and biological adjuncts to agricultural production. They should exist as networks in agricultural lands to be most effective. Soil is of major importance in agroecosystems, and maintaining, deliberately, its vitality and resilience to agricultural perturbations is the very basis of sustainable land use.

Order PDF Full Text


Click here to order any other PDF Full Text

Accession: 002308422

DOI: 10.1007/bf01965612

PDF Full Text: Basic principles of agroecology and sustainable agriculture

Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:

Other references

Tate, B., J.; Witort, E.; Mckenzie, I., F.C.; Hogarth, P.M., 1992: Expression of the high responder/non-responder human Fc-gamma-RII: Analysis by PCR and transfection into FcR negative COS cells. Distinct differences in the capacity of monocyte Fc-gamma-RII of different individuals to bind or not bind mouse IgG1 defines a polymorphism of Fc-gamma-RIIa and has previously been defined as the high responder (HR) or low responder (LR) polymorp...

JORNS, G., 1958: Studies on local burn therapy. Medizinische Monatsschrift 12(10): 688-690

Chamorovskiĭ, S.K.; Pikulenko, A.Ia.; Maksimychev, A.V.; Lukashev, E.P.; Pashchenko, V.Z., 1984: Temperature dependence of the kinetics of the fast phases of photoinduced electrical potential generation in films of the purple membranes of Halobacterium halobium. Doklady Akademii Nauk SSSR 274(3): 738-741

Sadler, C., 1990: Shift work. Beat the clock. Nursing Times 86(38): 28-31

Stanford, E.; Ladhani, S.; Borrow, R.; Waight, P.; Slack, M.; George, R.; Balmer, P.; Miller, E.; Helbert, M., 2011: Immunoglobulin G deficiency in United kingdom children with invasive pneumococcal disease. This study aimed to determine whether nonprotective, convalescent pneumococcal serotype-specific immunoglobulin G (IgG) concentrations in children with invasive pneumococcal disease (IPD) might be associated with an underlying IgG deficiency. The...

Hoffman, J., 1995: A teacher's guide to the future of dental education. New York State Dental Journal 61(5): 42-44

Sansalone, J.; Raje, S.; Kertesz, R.; Maccarone, K.; Seltzer, K.; Siminari, M.; Simms, P.; Wood, B., 2013: Retrofitting impervious urban infrastructure with green technology for rainfall-runoff restoration, indirect reuse and pollution load reduction. The built environs alter hydrology and water resource chemistry. Florida is subject to nutrient criteria and is promulgating "no-net-load-increase" criteria for runoff and constituents (nutrients and particulate matter, PM). With such cr...

Nisenbaum, I. A., 1971: The development of cirrotic changesduring sheep fasciolasis and the degree of its reversibility as a result of treatment. Unknown

Johnson R.L.; Vaughan R.A.; Caterina M.J.; Van Haastert P.J.M.; Devreotes P.N., 1991: Overexpression of the cyclic amp receptor 1 in growing dictyostelium cells. cAR1, the cAMP receptor expressed normally during the early aggregation stage of the Dictyostelium developmental program, has been expressed during the growth stage, when only low amounts of endogenous receptors are present. Transformants expressi...

Engel, G., 1977: Four years of experiences with foil bags for filling large boxes in the Klein Altendorf research farm. Erwerbsobstbau 19 (12) 194-196