Show RESTORE BRAMBLE IBLE CROP INDUSTRY I Although the growing of blackberries ries raspberries and dewberries commonly commonly com com- known as ns brambles has been an industry of importance for many years yem's the acreage planted during the thelast thelast last deca decade e or more has not kept pace with the market demands demunds for rOle these fruits The disease factor is lie Iho most serious one that lint has to be overcome In remedying the situation In the opinion of A. A S. S Colby associate chief of and II II W. W Ander- Ander bon associate chief of ot pathology at nt the colle college e of agriculture ture lure University of Illinois They ire are irethe ue the Joint authors of a new circular n n- n titled tiLled Diseases of Brambles and Their Control which the college has Just published for free distribution to Interested persons Bramble ramble crops may be grown at a profit if varieties are chosen which are adapted to the particular soil and climate climate climate cli cli- mate if proper methods for controlling controllIng controlling ing insects and diseases are ure used and find if correct cultural practices are ure followed followed fol fol- fol- fol lowed the circular points out Disease Disease Dis Dis- ease ense is the tIte most Important of all nil these factors however since there is s considerable latitude in choice of varieties varieties va va- adapted to different localities since correct cultural methods are being beIng be be- ing lug worked out experimentally and since insects affecting brambles are not numerous and are fairly easy to control the publication adds one of a group of fungous fungous fungous fun fun- gous and bacterial diseases has hns entirely entirely en en- stopped the growing of raspberries raspberries raspberries rasp rasp- berries in some sections of Illinois and many growers are compelled to renew their patches aft after r two years rears of bearing according to the circular In 1005 1003 the loss in Illinois through f r 1 n 1 b I. I nn s I is is C estimated U to iu LV nave late U een more than 50 per cent of the crop while 25 per cent of the berry berlY crop cropis cropis cropis is lost annually because of this dis dis- ease Red purple and black types of raspberries rue rasp berries are all susceptible to no nose e although the disease is most de de- e to the UlC blackcaps caps In Illinois Illinois Illinois Illi Illi- nois the blackberry and the dewberry dewbery also are sometimes attacked by the disease No variety of raspberry Is known to tobe tobe tobe be entirely Immune but the Quillen may be he regarded as practically free from the disease Also this variety Is quite productive and md bears ears fruit of good quality on vigorous vigorous' canes The ariet variety commonly grown rown in Illinois namely Cumberland Plum Farmer Gregg re g Munger Older Ulder a and Honey Sweet are moderately susceptible while Scarff and Earhart are er very unsusceptible which is caused by a fungus first appears on young oung canes In the spring as small purplish slightly slight slight- ly raised spots As the canes grow thew P spots pots get bl bigger ger and become shaped lens or oval with a slightly raised purple edge The center grad grau wally takes tales on a dull grayish Ish color and andla la later tel b hc ln unken and fissured The Time lesions often are so close to ether gether that they form large Irregular lar Int spots pots with ill defined edges During During During Dur- Dur Dur Dur- ing the early part of the second year the cracks which were developed de during during during dur dur- ing the previous year car are deepened to so that the entire bark barl and wood of ot the cane cone underneath the spot becomes dried out and unable to mature the fruit Similar lesions are found on the stems and midribs of the time leaves find and occasionally on the stems of If the berries On the leaves small purple- purple bordered spots are developed rather late in the season semon This disease should hould not be confused with the time leaf spot of the raspberry which appears appears ap ap- ap- ap pears much earlier in the season and andis andis is more destructive causing premature premature prema prema- ture defoliation |