DISEASES OF LIME AND OTHER CITRUS TREES 221 



Similar results have been claimed in Texas. Recent work by 

 H. A. Lee goes to show that only alkaline Bordeaux is effective, 

 and that the excess lime, not the copper, is the active agent. 

 Lime-sulphur, at ordinary strengths, is indicated as likely to be 

 effective. 



Exclusion. 



Citrus trees imported into the Lesser Antilles in recent 

 times, before the danger from citrus canker was known, have as 

 far as possible been examined, and no trace of the disease has 

 been seen. Thorough surveys of Cuba and Porto Rico have been 

 made with the same result. 



In order to exclude the disease ordinances have been issued 

 in the British islands designed to exclude material that may 

 possibly be infected, and it is obviously desirable that these 

 should be carefully enforced. 



Diseases, Injuries and Rots of Citrus Fruit. 



Shipping trade in citrus fruits in the Lesser Antilles has 

 been developed on a large scale only in connection with the 

 New York market for green limes. Traffic in oranges and 

 grapefruit is confined to inter-island exchange carried out in an 

 unorganised fashion. Barbados especially, with its dense popula- 

 tion and lack of home-grown fruit, affords a market for low- 

 grade seedling oranges. 



It is understood that green limes, selected and packed with 

 reasonable care, usually reach their destination in good condition. 

 Such complaints as are current appear to refer to poor material 

 carelessly packed by casual speculators. No examination of the 

 fruit for defects in condition as it reaches the market appears 

 ever to have been called for, or made by any representative of the 

 growers. 



Under these circumstances there is but small interest in 

 these islands in a subject which in countries with a large trade in 

 citrus fruits has received a very large amount of attention. The 

 affections which have been met with are noted below. 



It should be borne in mind that in addition to injuries and 

 infestations which take place while the fruit is growing or ripening 

 on the tree, often as part of the manifestation of diseases also 

 affecting other organs, there is a definite class of troubles which 

 are solely due to causes connected with picking and storage, 

 while the damage due to some of the affections of the former 

 class may be greatly extended by the manner of handling the 

 fruit during and after picking. 



In this connection reference should be made to Chapter XIII 

 on the subject of handling fruit in general. 



