2IO Journal of Agricultural Research voi.xvn, no. e 



The equations to the various curves are as follows 



Mean weekly yield 



-22.7692 10.7802 tan"' 



/ 2 \ —22.7692 10.7002 tan ' 



3 years. •J'=33 -7848(1+^^1^) ' '""" ^^^^'^'^ ^^"^^ ^'^' 



4 years. •>'=52.7759(i+^7;^) 



5 years. .>'=47-4o6(^i+^^^_^^^ J ^ -Uo. 



26.698s 



J.2 \— 136324 3-9661 tan 1 

 2 N -6.8866 3.3430 tan-l 



2 \ —12.4973 7-1576 tan 1- 



/ , x2 \-"-4973 7-IS76 tan '^-^^^ 



6years. .j'=2o.457(^i+^^^-y^j e -Uo. 



/ , x^ \-xs-4198 16.0162 tan-1^^3^^ 

 7years..j'=o.9i98(^i+^^^;8i86; ^ ^' 



^, s -10.8431 5.9709 tan-l j^;^ 

 8years..y=i9.87i(i+6^j;^765; ^ Do. 



. .21.0838 , y. V 66.9477 



9 years. .^=3 1.42 78(1 +3-^) (^-^71^) ^^^^^"'^ '^^^P^ ^- 



10 years. .^=21.0148 e ~ -a-^i^ Normal curve. 



. 2 \ "6.2805 



11 years. .y=x3.o538(i+^^,) ^^^arson's Type II. 



N 5-6158, N 25.4498 



12 years. .>'=7.5643(x+^^) {^-^^^ ^^ '^ '^P^ ^- 



Fai percentage 

 ,.2 \ —22.1236 30.4278 tan-i- 



/ ,.2 \ -22.1230 30-4270 •.ail - , >,, TTT 



3 years, ,,08. .,.„.^,,(^+^^ e "-" Pearson^s Type IV. 



— 2.0483I , >. 48.8478 



3 years, 1909. .^=96.^95^ e C^+ip^e) ^^=^'^"'' '^^'P" '"• 



(o \ — ic.Assg 19.1242 tan ' t, 3 



T I ^ ^ 5 4559 9 'SSooS ,^ jy_ 



^+249.6647/ '^ ^ 



. s65.3S87, ,^ .286.7682 



4 years, 1909. .)'=7-36o5(x+,-^) (^"x-^S^^) ^^^''^"'^ '^^P^ '• 



9 X — 11.1847 75.2496 tan ' 7 



/,_^i_V / ''■'" Pearson's Type IV. 



5 years. .>'=o.o2 2 1(^1+-^^^;^^ e 



X 



(o N —It;. 1461 ?6. 8364 tan '■ ■ 

 ,_^l_^ ^^-'^^^ ^3-os5i Pearson's Type IV. 



"^531-5363/ 



. X 5-8303/ „ N9-OI23 



Q a,./tJ- ^ 1 fi- - — ) Pearson's Type I. 



7years..>=87.2637(^i + — 3^^^^ l^i 16.0669/ 



