a t h R l t t fi h S i s e ur e x o o er e s T I E D I D L H B A LE Y E B Y . . M THE PRINCIPLES O F AGRO NO Y a m m m l dt B k 5 1 t ur cx oo 81 85 s T E D I E D H A L B ILE Y Y B . . S C U T a M E G NN I NG G R L R E m A B I I n n U e M T S C U T U a , . W E L E EN G R I L R E A rr n o r M M M T a , . W A R A NA G E EN F rr e n i i C P S , a a. PR N L E m L P d B k I I yo n pp n n uc n M M T , , A NA G E EN S o n . U T a . RN E L D J D F S F I C ug g r O HE RO PS T S . . , a . M w PL A N P O LOG D B i h I t ug g r H Y Y . . a , a o o, f d s i l t Pl t P ti pe c re e re n c e o n r uc n e M . a N I A L H A H m m S m s s rp r u uq n ' F O R e r o n , . M m T C C t s a o n g o ery H E o n n n o r ee e M , U S . W A N RE A N D h l s ' r n u z n n i i P U C T , . I E L D C RO PROD ON L F st a I v ng o n i e T , . W RR IGA ION d ts s I P o o gn n o r RAC , TI C E i e T S T U T U . P LA N AN D E I R C L R E m P F s p r o ru H i T S S S , . E OO RA E H A h k T G t c c o c X - B K o r C T C a , . m w A N D PRA E G T m s I y H E c o r T C , I E O J L S U DG IN G V - K i e C P S . W PR IN I L E h F t o r LO RI C U LTU B E , . H R T E P I N C I P LE S O F M A R Y G O N O RO A T E X T BO O K O F C P PRO DUC TIO N F O R HIGH — H S C H O O LS AN D S O RT C O U RS E S I N - R R O U U AG A G IC LT L C LLE E S A A S F R N K LIN S H RRI P D H . , . AG A G L A L C C C T I M P RO FESSO R O F RGO N O Y AGN D D IARE ATGO R O FLTH E ASL HO OLLL O F R U U R T C T C I I I E N N E E R N U H R U U R O EG E , A D N W S A GE O RGE TE RT B S , . . A AG L A L L L G T CT T C T C I I N S RU O R IN AG BO NO I Y U H R U U R O E E , a m N fi d n ! M M M THE AC ILLAN CO P ANY 1 91 5 fi ll i h ts s d r g r e erve G T I C 1 915 O PYR H , , M M M B T HE AC ILLAN CO PAN Y Y . e e e e e e e a S d l d P bli h d D mb e t u p n c tro ty p u s c r 1 91 5 . , . ” fi n Li b . M A G C D E" C 1 . w N h or i c a w J S C sh i ng C o Be r i c k dx Smith 00 . . . M w m A N d U S o r o o u , , . . . A R P EF CE a A i st u ct i o i th e h i h s ch o o l h G R IC U LT U R A L n r n n g - s w h e x te d e d ap i d l w it h i th e l as t f e a s t at th e s n o r y n e y r a d e ma d f s u i tab l e te t bo ok s h be c ome i i te t s s s - n o r x n n . Th a i at i o i the teach i i d iff e e t s c h o o l s i s n e v r n n n g n r a e at th at s e ve a l t e x ts e u i e d So m e h i h s o g r r re r q r g . ch oo l i e b u t e a a i c u l tu e W h i l e ot e s i h s s g v o n e y r n g r r r , i e f g v o u r . T h i s b o ok i s d e i e d f ch oo l s i i m o e th a s e s g n r g v n g r n c ou s e i a i c u l tu e i ts tu d s h o u l d oba b l s o n e r n g r r ; y p r y p e c e d e i s t u cti o i h o ti c l t u e a i mal h u s b a d r n r n n r u r o r n n ry . a A k o w l e d e o f b o ta d ch e m i s t alth o u h t n g n y n ry g n o , a e u p o e d W i l l as i st i bette u d e sta d i o f s s s p r p n r n r n n g , a a ome p e hap ll o f th e ch pt s e s s r r , , . a w A l th o u h i tte i m a i l f te t book th e d i s g r n pr r y o r x - . , a i o u ht to be u s e fu l to th e cti cal fa me Wh ss c u o n g pr r r o W i l l fi d t e at e d i te ch i ca l l a ua e th e p i - n r n n o n n n g g r n i l u d e l i m a o f h i act i ce s s s c p e n r y n g n y p r . Th o s e w i s h i m o e i fo m a i o W i l l fi d h e l p i th e t n g r n r n n n l i st o f s up l e m e ta e ad i s at th e d o f e ac h c hap p n ry r n g e n A c om p l e te l i s t o f e fe e ce s has be e i ve t t e r r r n n o n g n ; . a a l th e m o st ac ce s s i bl e pu b l i c ti o s me ti o e d o n y n re n n . C o sta t e fe e c e has be e m a d e to h C c l ope d i a o f t n n r r n n e y A A H me i ca i c ul t u e b L Bai l e t o F a m e s ’ r n g r r y y r r . . , D A B l l e t i s o f the U i te d State s e p a tme t o f i u n n r n g r a a a c u l t u e d to a u mbe o f t d d wo k s e ach s r n n r n r r o n , bj e ct al l o f Wh i h h ld b i th e l i b a o f e e s s u c o u e n r ry v ry , w h oo l w h e e a i c u l t u e i s tau h t V e f e fe s c r g r r g ry e r r . V 4 45 09 5 a P f re c e a e s h a ve be e mad e to s tate e x e im e t tat i o b s n o n p r n n pu a a li i s i e m a o f th e m a a i ab l e t s t l c o n n c n y re n o v , . a Th te ach i o f a i c ultu e i s alu a ble o l y i t s e n g g r r v n a i s m ad e ac t i l I t i s s u e ste d the e f o e t hat t s pr c g g r r u . , , a o a d e t W k i t he l abo ato d fi ld as m u c h s s n r n r ry n e p o s s i bl e i o d e t o bec ome d i e c l fami l i a i th s oi l W t s n r r r y r , a c op s d a pli c a i o s o f i i l e i s te ad f el i t s r n p n p r n c p n o r y n g , a s ol e l u o W h th e te x t sa ab o u t th e m t s y p n y . a T h a u th o s i d e b ed to a u m be o f the i l t e r re n n r r c o a A l e u e at the U ah i c ultu a l C o l l e e f t s g g r r g o r e n c o u r a a aa m d f i e d l c i t i c i s m d u i th e e i o t t g e e n n r n y r r n g p r p r n a a o f t h i bo ok Th e u d e pe ci al ob l i ti o to s s ‘ y re n r g n . a W P e s i de t J A i d ts oe Di e c to E D B ll P r n r r ro . . , . . , a a M A A f N Pe d e s o d e s s F B c k e ss s e o r r n n r r n . . , . . . , a a A C L d e s o d N I B tt ll o f W h om h av e u n r n n . . , . . , a ea d th e m a s c i t d off e e d v al u ab l e u e t i o s s s r n u r p n r g g n . F RA N KLI N S H A RRIS ' . , O R W G G E E STE ART . T GAN A L U O H , a , M 1 1 9 1 5 y , . N N CO TE TS H E C APT R I OD O T R T R I N U C Y a a a W A h t is i lt 1 i lt d th s i s g r c u ure g r c u ure n e c en c e , a 2 A i lt d th i d st i s 2 O t iti s i ; g r c u ure n e n u r e ; ppo r un e n , a a a a i lt i d 3 Di isi s f i lt 4 g r c u ure re v r e ; v o n o g r c u ur e ; , , a a m Ph f 4 S f h i b k 4 s s t s e o g ro n o y c Ope o o o , . . A H L A P RT I T E P N T . H C A PTE R II R O M LA T I T T P I E H E N AN D T S N V N E N L a a a w F t s f l t th 1 0 th f s s 1 2 c o r o p n g ro ; e n g o e o n ; , , a a T W m F st 1 3 t 1 4 t 1 6 S l i h t 1 8 ro ; e pe r ure ; e r ; un g ; , , , , a W A i d 1 9 S il 1 9 P sts 20 d t d s 2 1 n ; o ; e ; p e c ro p , , , , . H E A C PT R III R R LA T T T P S 23438 N U C U E K a a C C lls 23 Ti ss s 25 i d f l t 26 l ts e ue ; n o p n ro p p n , , , , a a i 26 Pl t ts 27 Th t 27 Th st 30 T h ; n p r ; e ro o ; e e n ; e a , , , a w l f 35 Th fl 35 T h s d 37 B d s d e ; e o e r ; e e e ; u n , a , , U m b h s 37 d d st s 3 7 r n c e n e rg ro un e , , . E C HAPT R IV A O L TI P F 39 49 NT U N C N S - a w Gro th 39 ; Respir ti o n 41 ; Ph o to sy n th e sis 42 ; , , , a a a a m O s o sis 44 ; Tr n spir tio n 46 ; T r nslo c tio n 48 a , a , , T s t ti 48 R s s 49 r n po r o n ; e p o n e , , . ii v