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OverviewExcerpt from Fruit Notes, Vol. 42: January-February, 1977 A few commercial nurseries conduct virus indexing programs in regard to their propagating stocks and also maintain nuclear stock blocks. Individual State Experiment Stations as well have for several years cooperated in certification programs with commercial nurseries in regard to Prunus tree fruit nursery plants There is, however, at the present no general u.s. Recognized certification or regulatory program for distribution of virus - indexed or virus free apple nursery stocks. In this respect, the u.s. Orchardist is not as fortunate as his European counterpart in receiving reli able virus-free materials. The European distribution of virus-free material, handled through regulated programs, involving both re search and inspection agencies, results in great volumes of clean budwood from the initial source which is built up and released to the industry by the cooperating nurseries. Part of the problem in the u.s. In not duplicating this accomplishment is the reluctance of the American growers to set up a uniform, regulated approach for handling virus - indexed trees. Also, because of our numerous and separate fruit growing areas, there tends to be a larger diversity in apple cultivars due to the different climatical aspects, grow ing seasons, temperature limiting factors, other pressing disease pathogens, soil types, processing requirements and changing con sumer demands, each one a critical factor to specific area growers. In addition to this, there is a rapid development of patented selec tions being offered to the trade. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works. Full Product DetailsAuthor: W J LordPublisher: Forgotten Books Imprint: Forgotten Books Dimensions: Width: 15.20cm , Height: 3.40cm , Length: 22.90cm Weight: 0.866kg ISBN: 9781334559105ISBN 10: 1334559104 Pages: 658 Publication Date: 08 August 2018 Audience: General/trade , General Format: Paperback Publisher's Status: Unknown Availability: In stock Limited stock is available. It will be ordered for you and shipped pending supplier's limited stock. Table of ContentsReviewsAuthor InformationTab Content 6Author Website:Countries AvailableAll regions |