. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. 250 THE AGRICULTURAL NEWS. August 1, 1914. INSECT NOTES. ROOT BORERS. lu the Aijrii-uUural A\'iatus, TuE Advlt the pernicious efi'ects of the most harmful species are somewhat mitigated. liy the efforts of their natural enemies. The citrus root nematode is not capalile of independent migratifin for any consideraVile distance. It is spread liy the distriliution of infested nursery stock, and, in the field or orchard, )jy the surface water of heavy rains. It has been found that a temperature of 140'F, is fatal to thi
. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. 250 THE AGRICULTURAL NEWS. August 1, 1914. INSECT NOTES. ROOT BORERS. lu the Aijrii-uUural A\'iatus, TuE Advlt the pernicious efi'ects of the most harmful species are somewhat mitigated. liy the efforts of their natural enemies. The citrus root nematode is not capalile of independent migratifin for any consideraVile distance. It is spread liy the distriliution of infested nursery stock, and, in the field or orchard, )jy the surface water of heavy rains. It has been found that a temperature of 140'F, is fatal to this nematode, and as this is not a temperature which injures citrus nursery stock, the practice of dipping in hot water at about 140° should give a means of disinfecting such material and preventing the spread of the nematode. The authoi states that it is too early to make positive statements as to the amount of the injury caused by Tycen- chulus seinipenetrans l:)Ut that it seems to be a pest of which citrus growers in all parts of the world will have to take Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Great Britain. Imperial Dept. of Agriculture for the West Indies. Bridgetown, Barbados, Bowen & sons;
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