GRAPE HOOT-WORM IN VKSTKiATlOXS IN 1!)07. 63 



I'he true si<iiiificaiicc' of tlie.sc fi<;iin's, however, is not realized 

 unless we take into consideration that there are now nearly lO.OOO 

 acres more of bearing vineyard lliaii there were in 11)00. which should 

 of themselves produce neai'ly l.cSOO carloads of fruit 



An analysis of the IDOT croj) report hi'in<>s out forciMy the (U'teiio- 

 ration of the old established \iiieyards. In the three townships of 

 l^ortland, Westfield, and liiplev, in which there has Ijeen nuich less 

 new i)lanting than in tlie townships at eithei- the eastern or western 

 extremities of the grape beh, and which theivfoi-e come nearer to giv- 

 ing the true decline of old \ineyards. there was a decrease of 585 car- 

 loads of grai)es below the crop for iiK)(). Placing the \ahie of grapes 

 at $25 per ton. the lowest price paid for grapes in 1!)07. there was a 

 shrinkage in vahie approaching $175,000 in these three townships. 

 While some of this (h'cline in j)roduction may be due to dej)letion of 

 soih lack of j)roper cuhivation. and adveise weather conditions, yet 

 many xinevai'dists who are careful observers are now convinced that 

 a high pei'centage of this loss is due directly to the ravages of the 

 grape root-woiiu. 



It is a fact notorious to all vineyardists that wood j)roduction in 

 neai'ly all vinevai'ds has greatly decreased. Tn the issue of the 

 '■'("haulau<]ua ( Jra|)e licit " for Jamuirv 7. 1I>0S. the statement is made, 

 in predicting a light crop for IDOS, that in most vineyards the wood 

 growth is ()5 per cent of the normal wood gi-owth of several yeai's ago. 

 and in uiany \inevards is as low as •_!5 pei' cent. PlxteiuhMl observa- 

 tions during the past year convince the writer that this stateuient is 

 by no means exaggerated. 



It was because of the existence of such conditions as aic (le>cribetl 

 above that the vineyardists of North East, Pa., became alarmed foi- 

 the future of theii' vineyards, and appealed to the Secretary of Agri- 

 culture foi" assistance. In comijliance with this recpiest investiga- 

 tions were coiumeiiced l)y the IJui'cau of Kntomologx' in the spring of 

 1907. 



WORK UNDERTAKEN AT NORTH EAS'!", PA. 



The uiain features of the work against the grape I'oot-worm at 

 North East. Pa., din-ing the ])ast sununer haxc beiMi : (1) A close 

 study of vineyard conditions to determine the amount of injuiw foi' 

 which this insect is responsible, and the amount of injury done to 

 vines of various ages; (2) the conducting of large-scale spraying 

 expei-iuHMits in \ineyards but recently infested, with a view to fur- 

 nishing i)rotection fi-om the insect and maintaining the present stand- 

 ard of crop ])roduction: (;>) begimiing large-scale exi)eriuients to 

 determine the possibility of bringing badly injured \ineyards up to 

 a state of profitable production, and to ascertain the best means of 

 fiu'iiishing protection to yoinig \ineyai"ds just coming into bearing. 



