ARAUJO FILHO, J. C. de

CORRÊA, M. M.

JACOMINE, P. K. T.

RCAAP - Repositório Científico de Acesso Aberto de Portugal

Fases não-cristalinas associadas aos solos da formação solimões no Acre.

Repository Open Access to Scientific Information from Embrapa

51SBCSFASES NÃO-CRISTALINAS ASSOCIADAS AOS SOLOS DA FORMAÇÃO SOLIMÕES NO ACREMarcelo Metri Corrêa(1); José Coelho de Araújo Filho(2); Paulo Klinger Tito Jacomine(3) !"#$%&'())&%#*+#,-./(%).*+*(#0(*(%+1#23%+1#*(#$(%-+4536&7#,-.*+*(#86+*94.6+#*(#:+%+-;3-)7#4+%6(1&4(<%.=>+;&&?6&4@# A"#$()B3.)+*&%#*+#C45%+D+#E&1&)#,C$#F&%*()<(7#6&(1;&=3(D?6-D)?(45%+D+?5%@# G"#$%&'())&%#*+#,-./(%).*+*(#0(*(%+1#23%+1#*(#$(%-+4536&7#H(D+%<+4(-<&#*(#8I%&-&4.+7#D+31&J1.-I(%=#;&<4+.1?6&4INTRODUÇÃO# $%&63%+-*&#/(%.K6+%#+#(L.)<9-6.+#*(#8-*&))&1&)# 8-*.)&1)#-&#E&.1#M+L&-&4>"#-&#<(%-%.<N%.&#5%+).1(.%&7#'&.#%(+1.O+*+#/.+I(4#*(#()<3*&)#*(#)&1&)#-&#86%(7#-+#*P6+*+#*(#!QRS7#D+%+#(L+4(#*(#*./(%)+)#61+))()#*(#)&1&)#-+#%(I.T&#*(#E(-+#U+*3%(.%+?#8#D+%<.%#*+)#&5)(%/+VW()#*(#6+4D&#(#&3<%+)#.-'&%4+VW()7#'&%+4#)(1(6.&-+*&)#D(%K)7#6&4#4&%'&1&I.+#)(4(1;+-<(#+&)#+<3+.)#Argissolos Vermelhos-Amarelos, para dar suporte ao projeto de Tese do Pesquisador José Rai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`4.6&)?#C))()#6&4D&)<&)#*()(-/&1/.*&)7#6&434(-<(7#+#D+%<.%#*(#4+<(%.+1#*(#&%.I(4#%.6&#(4#/.*%&)#/316^-.6&)7#(4#6&-Y3-<&7#(%+4#%(6&-;(6.*&)#6&4&#\+4&%'&)]7#D&%P4#)(-*&#(-<(-*.*&#B3(#6&-<.-;+4#&#4.-(%+1#+1&'+-+7#6&-'&%4(#6&-)<+#-+#(*.VT&#*(#!QRa#*&#E&.1#M+L&-&4>?#E&1&)#com morfologia similar aos caracterizados no projeto de José Raimundo Gama foram constata-*&)#-+#/.+I(4#*(#*()6%.VT&#(#6&1(<+#*(#D(%K)#D+%+#+#bc#2dd#-&#C)<+*&#*&#86%(?H()<+#'&%4+7#D(1+#-(6()).*+*(#*(#+D%&'3-*+%#+)#.-/()<.I+VW()#-&#6&-<(L<&#*&)#%('(%.*&)#)&-1&)7#'&.#6&-)(-)&#*()(-/&1/(%#()<+#D()B3.)+#6&4#&#&5Y(<./&#*(#+/+1.+%#+#D%()(-V+#*(#'%+VW()#não-cristalinas em horizontes selecionados nos solos que fazem parte do roteiro da IX RCC -&#C)<+*&#*&#86%(?#C)<()#%()31<+*&)#)(%T&#.4D&%<+-<()7#-T&#)N#D+%+#&)#()<3*&)#*(#I9-()(#(#4&%'&1&I.+#*(#)&1&)7#4+)#<+45P4#D+%+#+)#.-<(%D%(<+VW()#*(#3)&#(#4+-(Y&#+I%&).1/&D+)<&%.1?MATERIAIS E MÉTODOSSolos Amostrados# 0&%+4#3<.1.O+*+)#+4&)<%+)#)(1(6.&-+*+)#+#D+%<.%#*&#;&%.O&-<(#)35)3D(%K6.+1# e"#*(#B3+<%&#D(%K)#*(#)&1&)#*&#%&<(.%&#*+#bc2dd# M+5(1+#!"#D+%+#+/+1.+%#+)#D%&D%.(*+*()#^-*.6+)?#$+%+#K-)#6&4D+%+<./&)7#3<.1.O&3_)(#34+#+4&)<%+#*(#%('(%9-6.+#6&-).*(%+*+#.)(-<+#*(#4+<(%.-ais com estas propriedades, proveniente de horizonte Bw de Latossolo Amarelo da região da d;+D+*+#*&#8%+%.D(?Ferro, Alumínio e Silício Extraídos por DCB e Oxalato de Amônio# X)#(1(4(-<&)#'(%%&7#+134Z-.&#(#).1Z6.&#-+#'%+VT&#M0E8#'&%+4#*(<(%4.-+*&)#D&%#()-D(6<%&)6&D.+#*(#(4.))T&#*(#D1+)4+# bd$_8CE"7#+DN)#(L<%+VW()#)(1(<./+)#D&%#<%9)#4P<&*&)?#8)#(L<%+VW()#6&4#*.<.&-.<&_6.<%+<&_5.6+%5&-+<&#*(#)N*.&# Hde"# U(;%+#f#g+6J)&-7#!QhS"7#'&%+4#%(+1.O+*+)#(4#<%9)#(<+D+)#)36())./+)7#6&4#+B3(6.4(-<&#*(#!a#4.-3<&)#+#hSid#(#%(1+-VT&#)&1&j(L<%+<&%#*(#!j!S?#X)#4()4&)#(1(4(-<&)#'&%+4#(L<%+Z*&)#D&%#34+#`-.6+#(L<%+VT&#52 !"#$%&'()"*+,-'.$'+,"/$"0.,--'12,3()"$"0)++$.,3()"/$"4).)-5" 4'-6$7,-" 87,9:&'2)-" ;" 4).)-" 4$/'7$&6,+$-"$7"<)6$&2',.'/,/$"$"=$7,&/,"/$"<$->%'-,6&4# &L+1+<&# *(# +4k-.&# Dl# G7S#  -&# ()63%&"7# 3<.1.O+-*&_)(# +I.<+VT&# *(# m# ;&%+)# (# %(1+VT&#)&1&j(L<%+<&%#*(#!jAS?# U6n(+I3(#f#H+>7#!Qhh"?#d&4D1(4(-<+-*&#+)#(L<%+VW()#)(1(<./+)7#esses elementos também foram extraídos pelo método do pirofosfato de sódio (McKeague, !QRo"#6&-).*(%+*&#6&4&#4+.)#)(1(<./&#D+%+#(L<%+VT&#*())()#(1(4(-<&)#+))&6.+*&)#p#'%+VT&#&%I^-.6+#*&#)&1&?Percentagem de Amorfos# 8DN)#(L<%+VT&#6&4#&L+1+<&#*(#+4k-.&7#&#%()Z*3&#*(#M0E8# )&5%(-+*+*&"#'&.#1+/+*&#*3+)#/(O()#6&4#[16&&1#+#oaq7#)(6&#(4#()<3'+#p#!Said#(#D()+*&)?#$&%#*.'(%(-V+7#*(<(%4.-&3_)(#&#D(%6(-<3+1#*(#+4&%'&)?#d&-).*(%&3_)(#6&4&#4+))+# .-.6.+1#D+%+#&#6[1631&7#&#/+1&%#*(#M0E8#6&%%.I.*&#D&%#4(.&#*(#'+<&%#*(#34.*+*(#(4#5+)(#*(#)&1&#)(6&#(4#()<3'+#+#!Said?# !"#$%&'(#)*+"#'&,'-# 8#)3D(%'Z6.(#()D(6ZK6+# EC"#*+#M0E8#'&.#*(<(%4.-+*+#D&%#4(.&#*&#4P<&*&#*(#)&%VT&#*(#/+D&%#*(#[I3+# r3.%J7#!Qaa"?#$+%+#<+-<&7#'&%+4#3<.1.O+*+)#+4&)<%+)#*(#!#I#*(#M0E87#B3(#D(%4+-(6(%+4#(4#*())(6+*&%#6&4#$AXa#+<P#+<.-I.%#D()&#6&-)<+-<(# o#*.+)"?#C4#)(I3.*+7#())+)#+4&)<%+)#'&%+4#D&)<+)#(4#&3<%&#*())(6+*&%#6&4#+6(<+<&#*(#D&<[)).&7#*3%+-<(#&#4()4&#.-<(%/+1&#*(#<(4D&?#H(#+6&%*&#6&4#&#4P<&*&7#+#)3D(%'Z6.(#()D(6ZK6+#D&*(#)(%#&5<.*+#D(1+#*.'(%(-V+#*(#D()&#(-<%(#()<()#*&.)#<%+<+4(-<&)?RESULTADOS E DISCUSSÃOFe, Si e Al Extraídos por DCB, Oxalato de Amônio e Pirofosfato de Sódio# X)#%()31<+*&)#*(#'(%%&7#+134Z-.&#(#).1Z6.&#(L<%+Z*&)#D&%#Hde7#D&%#&L+1+<&#*(#+4k-.&#(#D.%&'&)'+<&#*(#)N*.&#)T&#+D%()(-<+*&)#-+#M+5(1+#!?#C4#I(%+17#&)#)&1&)#+D%()(-<+4#5+.L&)#<(&%()#*(#'(%%&#(L<%+Z*&#D&%#Hde# 0(*"7#/+%.+-*&#*(#S7oS#+#G7!G#*+I#JI_!7#)3I(%.-*&#D&5%(O+#*())(#(1(4(-<&#-&#4+<(%.+1#*(#&%.I(4# )(*.4(-<&)#*+#0&%4+VT&#E&1.4W()7#D+%+#)&1&)#*&#86%(7#(#+%(-.<&)#D+%+#&#s+<&))&1&#84+%(1&# s8"#*+#d;+D+*+#*&#8%+%.D("?#U()4&#6&-).*(-%+-*&#&#)&4+<N%.&#*(#<&*+)#+)#(L<%+VW()#D(1&#Hde7#)T&#5+.L&)#&)#<(&%()#*(#NL.*&)#*(#0(#-&)#)&1&)#()<3*+*&)7#)(-*&#&#4+.&%#/+1&%#&5)(%/+*&#D+%+#&#D(%K1#8d_$Sm# $t"7#*(#G7!G#*+I#JI_!?# X)#<(&%()#*(#'(%%&#(L<%+Z*&)#D&%#&L+1+<&#*(#+4k-.&# 0(&"#/+%.+%+4#(-<%(#S7Sm#+#S7mQ#*+I#JI_!#)(-*&#&#/+1&%#4+.)#5+.L&#(-6&-<%+*&#-+#+4&)<%+#*(#%('(%9-6.+# d;+D+*+#*&#8%+%-.D("?#$+%+#&)#)&1&)#*&#86%(7#&)#6&-<(`*&)#/+%.+%+4#(-<%(#S7!Q#+#S7mQ#*+I#JI_!7#*(#4&*&#B3(#+#%(1+VT&#0(&u0(*#/+%.&3#*(#S7!!#+#S7ma?#M+.)#/+1&%()#.-*.6+4#D%()(-V+#4+%6+-<(#*(#'&%4+)#de ferro de baixa cristalinidade, conferidas pelo ambiente mais úmido em que se encontram &)#)&1&)#*+#%(I.T&#84+Ok-.6+?#$+%+#&#s+<&))&1&#84+%1(&#*+#d;+D+*+#*&#8%+%.D(7#+#%(1+VT&#43.<&#5+.L+# S7Sa"#)3I(%(#*&4Z-.&#*(#'&%4+)#*(#'(%%&#*(#4(1;&%#6%.)<+1.-.*+*(?# 0&%+4#/(%.K6+*&)#<(&%()#*(#+134Z-.&#(L<%+Z*&#D&%#Hde# 81*"#(-<%(#S7A!#(#S7ha#*+I#JI_!7#)3D(%.&%()#+&)#(L<%+Z*&)#D&%#&L+1+<&# 81&"?#d&4D&%<+4(-<&#.-/(%)&#'&.#&5)(%/+*&#D+%+#&#).1Z6.&?#X)#/+1&%()#*(#81*#(#81&#'&%+4#)(4(1;+-<()#pB3(1()#*()6%.<&)#D&%#g&;+)#(<#+1?# !QQR"#D+%+# )&1&)#*&#86%(?#F&)# )&1&)# ()<3*+*&)7#&)# +1<&)#/+1&%()#*(#81&#  S7Gh#+#S7hh#*+I#JI_!"#)3I(%(4#+#&6&%%9-6.+#*(#'&%4+)#*(#NL.*&)#(#;.*%NL.*&)#*(#+134Z-.&#*(#5+.L+#6%.)<+1.-.*+*(?#Contudo, a ocorrência de alofana e imogolita não pode ser inferida em razão dos baixos va-1&%()#*+#%(1+VT&# 81&_81D"uE.&7#(-<%(#S7Gh#(#!7GA7#(#+3)9-6.+#*(#).I-.K6^-6.+#(-<%(#&)#/+1&%()#*(#E.&#(#81&?#d&4D+%+<./+4(-<(#&#6&-<(`*&#*(#81&#(#81*#*&)#)&1&)#*+#bc#2dd#86%(#'&.7#(4#4P*.+7#A7a#/(O()#)3D(%.&%#+&#s+<&))&1&#*+#d;+D+*+#*&#8%+%.D(?# 8#6&%%(1+VT&#).I-.K6+<./+# DvS7Sa"#(-<%(#&)#/+1&%()#*(#81*#(#0(*#*(/(_)(7#D%&/+/(1-4(-<(7#+#D%()(-V+#4+%6+-<(#*&#+134Z-.&#-+#()<%3<3%+#*&)#NL.*&)#*(#'(%%&#6%.)<+1.-&)#*&)#)&-1&)#()<3*+*&)7#)(-*&#%(w(L&#*+#6&-*.VT&#D(*&61.4[<.6+#%(.-+-<(?#C4#I(%+17#+1<&)#/+1&%()#*(#)35)<.<3.VT&#.)&4N%K6+# Eb"#)3I(%(4#+45.(-<(#*(#+6(-<3+*+#.-<(4D(%.O+VT&7#-T&#;.*%&4N%-53SBCSK6&7#(#)&5#6&-*.VT&#[6.*+# +1<+#+<./.*+*(#*(#+134Z-.&"# 0.<OD+<%.6J#(#E6;3x(%<4+--7#!QoA"7#6&(%(-<(#6&4#+)#+<3+.)#6&-*.VW()#+45.(-<+.)#*+#%(I.T&#*(#6&1(<+#*&)#)&1&)?# 0&.#&5)(%/+*+#D&36+#*.'(%(-6.+VT&#(-<%(#&)#<(&%()#*(#E.&#D+%+#&)#)&1&)#()<3*+*&)?#d&-<3*&7#-Z<.*+#*.'(%(-6.+VT&#'&.#.*(-<.K6+*+#D+%+#&)#/+1&%()#*(#E.*?#d&4D+%+<./+4(-<(#&)#teores de Sid dos solos da IX RCC foram cerca de cinco vezes maiores do que no Latossolo *+#d;+D+*+#*&#8%+%.D(?## F&)#)&1&)#()<3*+*&)#-T&#'&.#*(<(6<+*&#0(#(L<%+Z*&#D&%#D.%&'&)'+<&#*(#)N*.&# 0(D"?#$+%+#81#(#E.# 81D#(#E.D"#'&%+4#.*(-<.K6+*&)#5+.L&)#6&-<(`*&)7#.-*.6+-*&#D&36+#D+%<.6.D+VT&#*(#6&4D1(L&)#&%I+-&_4(<[1.6&)#-&#6&-<(`<&#<&<+1#*())()#(1(4(-<&)#-&)#;&%.O&-<()#)3)5)3-D(%K6.+.)#*&)#)&1&)#()<3*+*&)?# X)#D(%6(-<3+.)#*(#\+4&%'&)]#/+%.+%+4#(-<%(#G7h#(#h7o#*+I#JI_!#-+#M0E8#-&)#)&1&)#*+#bc#2dd7#)(-*&7#D&%<+-<&7#.-'(%.&%()#+&)#/+1&%()#(-6&-<%+*&)#D&%#:+4+# !Qoh"?#X)#/+1&%()#4+.)#5+.L&)# A7G#*+I#JI_!"#'&%+4#6&-)<+<+*&)#-&#)&1&#*(#%('(%9-6.+# s+<&))&1&#84+%(1&"#*+#%(I.T&#*+#d;+D+*+#*&#8%+%.D(?#./#01(,'-234)/#)5$4"$(#/-/#+)60/('-+# H(#+6&%*&#6&4#&#E&.1#M+L&-&4># E&.1#E3%/(>#E<+''7#AS!S"7#+)#D%&D%.(*+*()#^-*.6+)#podem ser conferidas pelo intemperismo de materiais de origem que apresentam quantidades ).I-.K6+<./+)#*(#/.*%&#/316^-.6&?#M+.)#D%&D%.(*+*()#%(D%()(-<+4#34+#(<+D+#*(#<%+-).VT&7#(4#B3(#&#.-<(4D(%.)4&#(#+#<%+-)'&%4+VT&#*(#+134.-&)).1.6+<&)#D%.4[%.&)#-&#)&1&# 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Fases não-cristalinas associadas aos solos da formação solimões no Acre.

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