. Bulletin of the Department of Agriculture. Agriculture; Agriculture. CITRUS scab: its cause and control. 17 mediately became severe in this seed bed and increased rapidly in the nursery. Dm-ing 1916, 1917, 1918, 1919, and 1920, the outbreaks of citrus scab in the bearing grapefruit orchards of Florida were in approxi- Tursaiy nvsovssoAy Ttruffso/iy SATU/?0^y. Fig. 3.âThermographic record of a typical week during the scab infection period, Orlando, Fla. mately average proportions, varying considerably from one locality to another. These outbreaks were very sporadic and, with but few exce
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. CITRUS scab: its cause and control. 17 mediately became severe in this seed bed and increased rapidly in the nursery. Dm-ing 1916, 1917, 1918, 1919, and 1920, the outbreaks of citrus scab in the bearing grapefruit orchards of Florida were in approxi- Tursaiy nvsovssoAy Ttruffso/iy SATU/?0^y. Fig. 3.âThermographic record of a typical week during the scab infection period, Orlando, Fla. mately average proportions, varying considerably from one locality to another. These outbreaks were very sporadic and, with but few exceptions, could not be anticipated. Often the disease did not \ 40 /.9 /.a ^ "\/\ fA A . I\^ r\h. h ^ r\f\ //*/ nr' mA A \r \ /w ; \j V f 1 If '^ J fv". \\ V\ !-h A /i ; A ', 1 V 1 '. .' 1 l^y â J \J\!\ 1 U 1 1 1 1 1 1 1 / 1 , 1 i' 1 ^^^. / V 1 1 /y 1 1 1 ' ; \r }0 /â¢Â« . /.O j l\ 1 ^ ? :5 M 1 hI i I y â H Tm" 1 11 1 Jl H fa B â 1 B 1 1 1 M 1 1 1 I 1 1 1 [9 b. 1 1 t 1 1 1 1 1 ylSL 111 â 1 III nnxni, Hni. II 111 1 ml / /s ^5/ /92nj^i7?u4^r~ /â 5 /S SL /S /yfJi/?c/y ^^/?/Z Fig. 4 âPrecipitation and maximum and minimum temperatures at Orlando, Fla., during January, February, March, and April, 1921âa year of very little scab infection. develop in orchards with an abundance of scab on the old leaves, but became#ather prevalent in properties hitherto apparently free from scab. On the other hand, sour-orange and rough-lemon nursery stock became severely affected during the spring of those years. °â23âBull. 1118- 2. 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 United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
Size: 2781px × 899px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauth, bookcentury1900, bookdecade1910, booksubjectagriculture
