Reação do solo e disponibilidade de micronutrientes, em solo de textura média, tratado com lodo de esgoto e cultivado com milho.

(1)

Scapim

4

, Pedro Soares Vidigal Filho

4

e Antônio Carlos Saraiva da Costa

4

1_{Faculdade de Ciências Agrárias, Universidade Estadual Paulista, Botucatu, São Paulo, Brasil.}2_{Departamento de Química,}

Universidade Estadual de Maringá, Av. Colombo, 5790, 87020-900, Maringá, Paraná, Brasil. 3_{Departamento de Engenharia}

Rural, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, Jaboticabal, São Paulo, Brasil.

4

Departamento de Agronomia, Universidade Estadual de Maringá, Maringá, Paraná, Brasil. *Autor para correspondência. E-mail: elenzi@uem.br

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(5)

Doses de biossólido (t ha )-1 11

10

9

8

7

0 6 20 40 60 80

C

T

C

(

c

m

o

l

d

m

)

c

-3

Y = 8,1574 + 0,0272 x

R = 0,93602

1 2 484 7

6 5 4 3 2 1 0

0 20 40 60 80

Doses de biossólido (t ha )-1

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(6)

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0 20 40 60 80

100 80 60 40 20 0 Fe Mn Zn Cu

Dose de lodo de esgoto aplicada (t ha-1)

T e o r d e m e ta l e x tr a íd o c o m s o lu ç ã o d e D T P A ( m g k g ) -1

CFe = 0,850 Dose + 31,8 (R = 0,972)2 CMn = 0,131 Dose + 17,6 (R = 0,984)2 CZn = 0,096 Dose + 1,13 (R = 0,961)2 C_Cu = 0,0274 Dose + 1,07 (R = 0,958)2

8 ( ) " #, " " " 3" 4$ " 5 "+ 0 " "+ 789 8A ! " #,

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CFe = 0,8875x + 135,76 (r = 0,648)2

CZn = 2,0054x + 57,062 (r = 0,965)2 CMn = 0,2409x + 104,84 (r = 0,6222)2 CCu = 0,1202x + 6,3807 (r = 0,9948)2

Fe Mn Zn Cu 100 150 200 250 50 0

0 10 20 30 40 50 60 70 80

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CFe = 26,67 + 0,837D - 0,077 T

R = 0,972

0 20

40 60

80

Dose de lodo (t

ha- )

D 1 30 60 90 120 Te_m

po_(d ias₎ T 100 80 60 40 F e ( m g k g ) -1 1 2

CFe = 213,08 + 2,39D - 1,037T - 0,0199 DT R = 0,962

300 250 200 150 100 30 60 90

120 0 20

40 60 80 Tem po (d ias) T Dose

de lod

o (t ha

- ) D 1 F e ( m g k g ) -1 1!2

8 ( 1 2 ) " " #, " 3" " "+ 789 ; H 1!2 J ) " " " 3"

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(7)

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CMn = 16,05 + 0,12D - 0,034 T R = 0,882

28 24

20

M

n

(

m

g

k

g

)

-1

30 60

90 120

Tem po (_dia

s)

T 0 20

40 60 80

Dose d e lodo (

t ha- )

D 1

1 2

CMn = 188,04 - 1 T

R = 0,802

Tempo ( dias)T

30 60 90 120

160

140

120

100

80

M

n

(

m

g

k

g

)

-1

1!2

8 ( 1 2 ) " " #, " " "+ 789 ; H " 1!2 J ) " " "

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(8)

0 " , " ! " " % # % #" " < # , D A# /" " # * F " " 1 E " F 2 " % # .$" " ! " K " " % # #" " # "+ ! " ! " , % $" " ; " " # $ # $ " " ?" " " " ? ' 1F 2 " % # .$" "# # $ $

! " " " " "#"

C u ( m g k g ) -1 Tem

po (d_T _ias) 0 20

40 60

80

Dose de lo

do (t ha- )

D 1 30 60 90 120 3,0 2,0 1,0

CCu = 0,77 + 0,027 D + 0,0048 T

R = 0,922

1 2

CCu = 8,47 + 0,0278 T + 0,2037 D - 0,0012 TD R = 0,962

C u ( m g k g ) -1 ₂₀ 15 10 5 Tem po (d ias) T 30 60 90₁₂₀ Dose de lo

do (t ha

- )

D

1

0 20 40 60

80

!2

8 ( 9 1 2 ) " " #, " 4$ " "+ 789 ; H 1!2 J ) " " " 4$

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; " " % " #" " # ; " # 484

CZn = 0,77 + 0,098 D + 0,00716 T

R = 0,952

8 6 4 2 Z n ( m g k g ) -1 Tem po_(d

ias₎ T 30 60 90 120

0 20

40 60

Dose d e lodo (

t ha- )

D

1

80

1 2

0 20 40 60

80

Dose de lod

o (t ha - ) D 1 30 60 90 120 Tem

po (d_ias) T 200 150 100 50 Z n ( m g k g ) -1

CZn = 94,61 - 0,50 T + 2,02 D

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