'JOO 



THE AGRICULTURAL NEWS. 



Ji>B 28, 1919. 



GDITORIAL 



Hkad OFIflCX 



NOTICES. 



— Bakbados 



Letters and matter lor publication, ae well as all 

 -specimens lor naming, ihould be addressed to the 

 Commissioner, Imperial Department of Agriculture, 

 "Barbados. 



All applications for copies oi the 'Agricultural 

 News' and other Departmental publications, should be 

 •RddresHed to the Agents, and not to the Department. 



The complete list of Agents will be found on 

 page 4 of the cover. 



Imperial CofrtrnissioneT of SirFranoie Watte, K.O.M.G. 



Avr<4:iilture f,>r thf West Indies D.Sc. F.I.C., F.C.S. 



80IKNTIF1C STAFF. 



Sr.itutific Assistant an< nu u rk_ i 



Assistaitt Knitor 



Mi.tomohfjisi H. A. Ballou, M.Sc. 



Mycologiat W. Nowell, D.I.C. 



^.■w^^^^l.t (m Cotton RueuTcli S. 0. Harland, B.So.t 



Chief Clerk 



Cltriful A>xistantf 



OLKRIOAt STAFF. 



A. (j. HoweU. 



Tyjti*t 

 jtaittaid Typist 



Auiitaiit for PHbticaHona 



(h. A. Corbin. 

 { P. Taylor.* 

 iK. R. 0. Foeter. 

 MiHR £. Robinson. 

 MiBB W. Ellis. 



A. B. Price. Fell. Jonm. Inat. 



*Stc4judeii fur Military Strviet. 



fPnrnided hy the Iniperlal Department of Siitntitic and 

 Industrial Research. 



^{jri cultural ^tm 



■Vol. XVIO. SATURDAY, .rUNE 28, 1919. No. 448. 

 """ NOTES AND COMMENTS. 



Contents of Present Issue. 



The editorial in this number deals with the devel- 

 opment of a niiiierHl oil industry in the West Indies, 

 pointing «>ut that the position of (l<>periHing entirely 

 upon planting is now altered. 



The mango tree borer ( Botocera rubun), a recent 

 introduction into the We.st Indies, is dealt with under 

 iLsect Notes, on pfige 202. A second article under 

 the.se notes tn-ats of the protection of stored grain from 

 insect attacks. 



The .Vlyciilogi.Mt's report on the invesMgiition of the 



froghopper pest and diseasi^ of .sugar-cane in Trinidad, 



the first two instalments of which havp been published 



in thifi Journal, i.H continued under I'lani I )i.'seases on 



^age 206. 



Poultry Manure 



This manure is rich in plant food, and il properly 

 dried and stored in fiicks or ea.sks is said to be worth 

 about four tini(!8 as much as farmyard manure. 



A note in the Jtiwrnal oflhc Dipartimnit vf Agri- 

 cultur,. of Victor M, Australia, .March lit! 0, points out 

 that since the advent of the motor ear, stable manure is, 

 becoming scarcer every year, ami it is worth while for 

 all who kee[i fowls to save the m;inure. Even the 

 small poultry keeper should uiethodioally .save it, for 

 a little concentrated manure is a very handv thing to 

 have for a small garden, it should never be used fresh, 

 as its value is about double when il lias bei'n allowed to 

 dry. Once dry, if not wanted for immediate use, it is best 

 stored in a barrel, mixing in a little soot with a cover- 

 ing of dry soil placed on the top. An excellent litjuid 

 manure can be made by mixing some of the contents 

 of the barrel with an eijual "juimiity of soot, putting it 

 in a piece of sacking and soaking it in water for a few 

 days. About an ounce of dry niannre and an ounce 

 of soot are usually snfhcient for a gallon of water 

 to provide a licjuid manure .suitable for use with the 

 majority of vegetables. 



Some DiflBculty in Enforcing Plant Quarantine. 



The Hawaiian Forester and Afjrimdturist, 

 March 1919, states that for a long time a great many 

 ships coming tron, Kurope into Ihe Port of New V'o;k 

 have been liiimping larlli ballast along the shores of 

 East Kiver, Hudson Itiver, and elsewhere around the 

 bay. This is a source of risk of the entry of undesirable 

 plants and plant pests, in the opinion of the (Tnited 

 States Departments of Agriculture, .ind an inquiry 

 has bien started to determine the extent of this 

 risk, and to provide safeguards against it. Besides 

 the likelihood of the introduction of undesir.ible 

 weeds by means of .seeds in the earth ballast, there is a 

 possibility also of the introduction of injurious 

 nematodes and hibernating insects, the pupae of which 

 might be in the soil, and any of which, unless preven- 

 tive measuit's are taken, might spread over a consider- 

 able pari, of the country, and cause much damage to 

 the agrieulturisl. 



Susceptibility of a Non-Rutaceous Plant to 

 Citrus Canker. 



Under Fhmt Diseases in the issueofthis.lourn.il 

 for May :{, 1919, th(! observations of .Mr. il Alhcrlon 

 fjce, ol the Huitau of Plant Industry, United States 

 Department of Agriculture, on the susceptibility of 

 certain rutaeeous plants to citrus canker were noted. 



.More recently inoculations of plants outside of the 

 Ilutaceae have be(>n attempted. A note in Science, 

 M.'i} 2;!, 1919, records that needle punctiiics made 

 through a suspension of I'scudomona.s cifrl placed 

 upon the activiijy growing midribs of leaves, and upon 

 the petioles and main stems of /.ancin.m <lo}iiesticuiii, 

 have produced swellings which cracked later, and 

 eruptions nf tissue have resulted. In some cases the 

 sweilings have been surrounded with the yellow halo 

 typical of linker upon citrus hosts. I'his plant is a 



