4 pp. / Publication contains an introduction to the rationale for pruning as well as sections on when to prune, what part of the tree to prune, techniques for best pruning, and how to protect the tree following pruning. Six figures are included.

Thesis (Higher certificate in librarianship)--Cape Town. / Compiled as a continuation of the bibliography by R.G. Webb published in 1951.

Abstract A newapproach to the control of postharvest pathogens, while maintaining fruit quality, has been implemented by the application of essential oil amended coatings to citrus. This approach eliminates the need for synthetic fungicides, thereby complying with consumer preferences, organic requirements and reducing environmental pollution. In vitro studies indicated that the essential oils and some of the terpenoid components tested were active against Penicillium digitatum. In a series of subsequent semi-commercial and commercial trials, Mentha spicata and Lippia scaberrima essential oils, as well as pure (d)-limonene and R-(−)-carvone were incorporated into a variety of commercial citrus coatings. These amended coatingswere applied postharvest to ‘Tomango’ oranges in the absence of the standard fungicide dip. Excellent disease control was achieved with the amended coatings, while measured quality parameters indicated that overall fruit quality was maintained. Moreover, moisture loss was decreased significantly in fruit treated with essential oil enriched coatings. The efficacy of amended coatings as a viable alternative or supplement to existing fruit protection strategies was demonstrated in a commercial trial.

a b s t r a c t A newapproach to the control of postharvest pathogens, while maintaining fruit quality, has been implemented by the application of essential oil amended coatings to citrus. This approach eliminates the need for synthetic fungicides, thereby complying with consumer preferences, organic requirements and reducing environmental pollution. In vitro studies indicated that the essential oils and some of the terpenoid components tested were active against Penicillium digitatum. In a series of subsequent semi-commercial and commercial trials, Mentha spicata and Lippia scaberrima essential oils, as well as pure (d)-limonene and R-(−)-carvone were incorporated into a variety of commercial citrus coatings. These amended coatingswere applied postharvest to ‘Tomango’ oranges in the absence of the standard fungicide dip. Excellent disease control was achieved with the amended coatings, while measured quality parameters indicated that overall fruit quality was maintained. Moreover, moisture loss was decreased significantly in fruit treated with essential oil enriched coatings. The efficacy of amended coatings as a viable alternative or supplement to existing fruit protection strategies was demonstrated in a commercial trial.

This item was digitized as part of the Million Books Project led by Carnegie Mellon University and supported by grants from the National Science Foundation (NSF). Cornell University coordinated the participation of land-grant and agricultural libraries in providing historical agricultural information for the digitization project; the University of Arizona Libraries, the College of Agriculture and Life Sciences, and the Office of Arid Lands Studies collaborated in the selection and provision of material for the digitization project.

No description available.

Thesis--University of Pretoria. / Errata slip inserted. Includes bibliographical references.

Thesis (MScAgric)--University of Stellenbosch, 2006. / Bibliography.

15 pp. / Originally published: 2000 / This publication discusses some diseases that are sufficiently important to the citrus in Arizona. Topics include: -Parasitic Diseases -fungi / virus diseases / virus or virus-like diseases -Mycoplasma Diseases -Nematode Diseases -Nonparasitic Diseases

Revised / 10 pp.