. Plant food; : its nature, composition and most profitable Acid, Total, Per Cent. ; 00• O 1 !>. IN w 0 -« -t-> IH M ^ Co M ■ o ■4-» ; ; CO C4 Nitrogen,Per Cent. HI o M CO ■ 0 Lime,Per Cent. LO CO d Ml-l • o • HI LO 0 CO -^ 0 :: ^ 0 lO loO OOioCOC^OOLO fO e< CO * O^ 0 . S I o . . . ^ M 1Oi^ VOOfOM-ilOilO M M M Ti CO c3 •4-» o Ph M-l o 0) bi Abi !5 COcdo o cd s of .1—1 D (U a . b/ CO 03•wO Oh O cdA * 3 03 • f-H CO ab/ CO O0. o Id o ■ •e 03 u 3 : .1—1 o: 4-> .1-1 > C/3 CO CO ^c3 o; •4-) o ■i-l m u O X (O o M-l o (U cd •1-1 ■1 • o 03 CO CO 1 0O CO <u CO < 0 0 CO 6
. Plant food; : its nature, composition and most profitable Acid, Total, Per Cent. ; 00• O 1 !>. IN w 0 -« -t-> IH M ^ Co M ■ o ■4-» ; ; CO C4 Nitrogen,Per Cent. HI o M CO ■ 0 Lime,Per Cent. LO CO d Ml-l • o • HI LO 0 CO -^ 0 :: ^ 0 lO loO OOioCOC^OOLO fO e< CO * O^ 0 . S I o . . . ^ M 1Oi^ VOOfOM-ilOilO M M M Ti CO c3 •4-» o Ph M-l o 0) bi Abi !5 COcdo o cd s of .1—1 D (U a . b/ CO 03•wO Oh O cdA * 3 03 • f-H CO ab/ CO O0. o Id o ■ •e 03 u 3 : .1—1 o: 4-> .1-1 > C/3 CO CO ^c3 o; •4-) o ■i-l m u O X (O o M-l o (U cd •1-1 ■1 • o 03 CO CO 1 0O CO <u CO < 0 0 CO 6 uo OJ 0H w UDC DZ< m < b. Z< o Q. h (0 o bJ XH zo h (0 o Q. oo Ui <III 0 00 1-1 N CO Os rf VO d M d o ro t^ O lO fO 00 vo ^ I- o 00 OOn MD v> O t-> O >-t to CO ro OO o o o od ^ ■^ ^ O o -r3(U C/5 CO u <v 3 bJO cd i-i d ■ 03 3 c/: ^ Q TJ biO p o <U •T-« E K :^ 3« PLANT General view of Fruit Department, Experiment Farm,Southern Pines, North Carolina. PART USE OF FERTILIZERS. There is no way to tell, without experiment, what foodconstituents a soil lacks. The crops themselves give valu-able suggestions. As a rule lack of nitrogen is indicatedwhen plants are pale-green in color, or when there is smallgrowth of leaf or stalk, other conditions being bright, deep green color, with a vigorous growth of leafor stalk, is, in case of most crops, a sign that nitrogen is notlacking, but does nut necessarily indicate that more nitro-gen could not be used to advantage. An excessive growthof leaf or stalk, accompanied by an imperfect bud, flower,and fruit development, indicates too much nitrogen for thepotash and phosphoric acid present. When such crops ascorn, cabbage, grass, potatoes, etc., have a luxuriant, health-ful growth, an abundance of potash in the soil is indicated;also when fleshy fruits of fine flavor and texture can besuccessfully
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