| Show Irrigation Useful I for Apple Disease Pi P Picking c Fruit at Eight Ti Time e Also Is Bi Department nt Prepared the United Slates Prepared by or Agriculture Water core a n serio 5 disease of ap apples ap- ap up Important Im- Im Important Important Im Im- every er pies ples occurring In n practically the section of growing apple-growing worl world l. l may way be reduced considerably by liberal irrigation and by picking maturity according according according ac ac- ac- ac the fruit at the proper proper- cording to Dr ChiDes Charles Brooks pathologIst pathologist ogist of ot the United States Department I of ot Agriculture Six years jears of Investigation I that contrary con- con i to show tion have e served the ti-ary ti to the prevailing pre opinion disease occurs when the supply of water In the soil is Inadequate rather than when it Is excessive e The real cause of the trouble however Is in connection with high temperatures Intense Intense Intense In In- tense sunlight and the accompanying Concentration in the fruit high sap of The watery or or glassy appearance the tile flesh of ot tile the lie apple alil I a characteristic distinguishing water core cole from all other apple discuses Is clue due to the tile tilling billing of the Intercellular spaces es with cell cap wip Instead of air When water Is not available In high temperatures and intense sunlight sun sun- light cause the he Sl sap In la the fruit to lo con and exert enormous pressure on the eel cell tissues to a point where they break down In Irrigated re regions fons experiments showed that apples from developed less heavily JI irrigated trees trees' water coie core than those from lightly ir irrigated lr- lr trees Also less Jess water core de developed eloped when light Irrigation was followed by heavy irrigation than when the practice was reversed revered Picking at nt the proper strike stage of maturity maturity ma ma- is ISI practicable preventive pren pre preventive n- n tive now known for the trouble especially espe espe- daily in the r regions The stu study ly showed that lInt wat water r core might Increase as much a as 00 DO P per r cent In iu 10 days days' after the proper proper time lime for picking pick pick- Ing Ins |
