(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (NN nature)) (VP (VBZ is) (VP (VBN left) (ADVP (RB alone)))))) (, ,) (NP (DT a) (NN balance)) (VP (VBZ is) (VP (VBN reached) (PP (IN among) (NP (NP (DT the) (NNS animals) (CC and) (NNS plants)) (VP (VBG living) (PP (IN in) (NP (CD one) (NN area)))))))) (. .)))
When nature is left alone, a balance is reached among the animals and plants living in one area.
advmod
PronType=Int
when
When
ADV
WRB
nsubj:pass
Number=Sing
nature
nature
NOUN
NN
aux:pass
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
be
is
AUX
VBZ
advcl
Tense=Past|VerbForm=Part|Voice=Pass
leave
left
VERB
VBN
advmod
alone
alone
ADV
RB
punct
,
,
PUNCT
,
det
Definite=Ind|PronType=Art
a
a
DET
DT
nsubj:pass
Number=Sing
balance
balance
NOUN
NN
aux:pass
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
be
is
AUX
VBZ
root
Tense=Past|VerbForm=Part|Voice=Pass
reach
reached
VERB
VBN
case
among
among
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
obl
Number=Plur
animal
animals
NOUN
NNS
cc
and
and
CCONJ
CC
conj
Number=Plur
plant
plants
NOUN
NNS
acl
VerbForm=Ger
live
living
VERB
VBG
case
in
in
ADP
IN
nummod
NumForm=Word|NumType=Card
one
one
NUM
CD
obl
Number=Sing
area
area
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (CC But) (SBAR (WHADVP (WRB when)) (S (NP (NN man)) (VP (VBZ starts) (NP (PRP$ his) (NN work)) (PP (IN in) (NP (NN nature)))))) (, ,) (NP (DT the) (NN balance)) (VP (VBZ is) (ADJP (JJ likely) (S (VP (TO to) (VP (VB be) (VP (VBN destroyed))))))) (. .)))
But when man starts his work in nature, the balance is likely to be destroyed.
cc
but
But
CCONJ
CC
advmod
PronType=Int
when
when
ADV
WRB
nsubj
Number=Sing
man
man
NOUN
NN
advcl
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
start
starts
VERB
VBZ
nmod:poss
Case=Gen|Gender=Masc|Number=Sing|Person=3|Poss=Yes|PronType=Prs
his
his
PRON
PRP$
obj
Number=Sing
work
work
NOUN
NN
case
in
in
ADP
IN
obl
Number=Sing
nature
nature
NOUN
NN
punct
,
,
PUNCT
,
det
Definite=Def|PronType=Art
the
the
DET
DT
nsubj
Number=Sing
balance
balance
NOUN
NN
cop
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
be
is
AUX
VBZ
root
Degree=Pos
likely
likely
ADJ
JJ
mark
to
to
PART
TO
aux:pass
VerbForm=Inf
be
be
AUX
VB
xcomp
Tense=Past|VerbForm=Part|Voice=Pass
destroy
destroyed
VERB
VBN
punct
.
.
PUNCT
.
(ROOT (S (S (NP (PRP He)) (VP (VP (VBZ grows) (NP (DT a) (NN crop))) (CC and) (VP (VBZ takes) (NP (PRP it)) (ADVP (RB away)) (S (VP (TO to) (VP (VB eat))))))) (: ;) (S (ADVP (RB then)) (NP (EX there)) (VP (VBP are) (NP (NP (DT no) (JJ dead) (NNS leaves)) (VP (VP (TO to) (VP (VB fall) (PP (IN on) (NP (DT the) (NN ground))))) (, ,) (S (VP (VBG holding) (NP (NN water)) (SBAR (IN while) (S (NP (PRP it)) (VP (VP (VBZ sinks) (PP (IN into) (NP (DT the) (NN surface)))) (, ,) (CC or) (VP (VBG decaying) (CC and) (VBG adding) (NP (NN humus)) (PP (IN to) (NP (DT the) (NN soil))))))))))))) (. .)))
He grows a crop and takes it away to eat; then there are no dead leaves to fall on the ground, holding water while it sinks into the surface, or decaying and adding humus to the soil.
nsubj
Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs
he
He
PRON
PRP
root
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
grow
grows
VERB
VBZ
det
Definite=Ind|PronType=Art
a
a
DET
DT
obj
Number=Sing
crop
crop
NOUN
NN
cc
and
and
CCONJ
CC
conj
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
take
takes
VERB
VBZ
obj
Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs
it
it
PRON
PRP
advmod
away
away
ADV
RB
mark
to
to
PART
TO
advcl
VerbForm=Inf
eat
eat
VERB
VB
punct
;
;
PUNCT
:
advmod
PronType=Dem
then
then
ADV
RB
expl
there
there
PRON
EX
parataxis
Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin
be
are
VERB
VBP
det
no
no
DET
DT
amod
Degree=Pos
dead
dead
ADJ
JJ
nsubj
Number=Plur
leave
leaves
NOUN
NNS
mark
to
to
PART
TO
acl
VerbForm=Inf
fall
fall
VERB
VB
case
on
on
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
obl
Number=Sing
ground
ground
NOUN
NN
punct
,
,
PUNCT
,
advcl
VerbForm=Ger
hold
holding
VERB
VBG
obj
Number=Sing
water
water
NOUN
NN
mark
while
while
SCONJ
IN
nsubj
Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs
it
it
PRON
PRP
advcl
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
sink
sinks
VERB
VBZ
case
into
into
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
obl
Number=Sing
surface
surface
NOUN
NN
punct
,
,
PUNCT
,
cc
or
or
CCONJ
CC
conj
VerbForm=Ger
decay
decaying
VERB
VBG
cc
and
and
CCONJ
CC
conj
VerbForm=Ger
add
adding
VERB
VBG
obj
Number=Sing
humus
humus
NOUN
NN
case
to
to
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
obl
Number=Sing
soil
soil
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (SBAR (IN Unless) (S (NP (DT a) (NN farmer)) (VP (VBZ acts) (PP (IN with) (NP (NN knowledge) (CC and) (NN skill)))))) (, ,) (NP (PRP he)) (VP (VBZ is) (ADVP (RB therefore)) (ADJP (RBS most) (JJ likely) (S (VP (TO to) (VP (VB make) (S (NP (DT the) (NN land)) (ADJP (JJR poorer)))))))) (. .)))
Unless a farmer acts with knowledge and skill, he is therefore most likely to make the land poorer.
mark
unless
Unless
SCONJ
IN
det
Definite=Ind|PronType=Art
a
a
DET
DT
nsubj
Number=Sing
farmer
farmer
NOUN
NN
advcl
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
act
acts
VERB
VBZ
case
with
with
ADP
IN
obl
Number=Sing
knowledge
knowledge
NOUN
NN
cc
and
and
CCONJ
CC
conj
Number=Sing
skill
skill
NOUN
NN
punct
,
,
PUNCT
,
nsubj
Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs
he
he
PRON
PRP
cop
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
be
is
AUX
VBZ
advmod
therefore
therefore
ADV
RB
advmod
Degree=Sup
most
most
ADV
RBS
root
Degree=Pos
likely
likely
ADJ
JJ
mark
to
to
PART
TO
xcomp
VerbForm=Inf
make
make
VERB
VB
det
Definite=Def|PronType=Art
the
the
DET
DT
obj
Number=Sing
land
land
NOUN
NN
xcomp
Degree=Cmp
poor
poorer
ADJ
JJR
punct
.
.
PUNCT
.
(ROOT (S (S (VP (TO To) (VP (VB take) (NP (NP (DT the) (NN place)) (PP (IN of) (NP (NP (DT the) (JJ useful) (NN matter)) (PP (IN in) (NP (NP (DT the) (NNS crops)) (SBAR (WHNP (WDT that)) (S (NP (PRP he)) (VP (VBZ removes)))))))))))) (, ,) (NP (PRP he)) (VP (VBZ uses) (NP (NP (DT some) (NN kind)) (PP (IN of) (NP (NN fertilizer))))) (. .)))
To take the place of the useful matter in the crops that he removes, he uses some kind of fertilizer.
mark
to
To
PART
TO
advcl
VerbForm=Inf
take
take
VERB
VB
det
Definite=Def|PronType=Art
the
the
DET
DT
obj
Number=Sing
place
place
NOUN
NN
case
of
of
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
useful
useful
ADJ
JJ
nmod
Number=Sing
matter
matter
NOUN
NN
case
in
in
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
nmod
Number=Plur
crop
crops
NOUN
NNS
obj
PronType=Rel
that
that
PRON
WDT
nsubj
Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs
he
he
PRON
PRP
acl:relcl
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
remove
removes
VERB
VBZ
punct
,
,
PUNCT
,
nsubj
Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs
he
he
PRON
PRP
root
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
use
uses
VERB
VBZ
det
some
some
DET
DT
obj
Number=Sing
kind
kind
NOUN
NN
case
of
of
ADP
IN
nmod
Number=Sing
fertilizer
fertilizer
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (S (NP (JJ Chemical) (NNS fertilizers)) (VP (VBP are) (PP (IN of) (NP (JJ great) (NN help))))) (, ,) (CC but) (S (NP (NP (NP (DT the) (NN waste) (NNS products)) (PP (IN of) (NP (NNS animals)))) (CC and) (NP (NP (VBG decaying) (NNS remains)) (PP (IN of) (NP (NNS plants))))) (VP (MD should) (ADVP (RB also)) (VP (VB be) (VP (VBN put) (PP (IN on) (NP (DT the) (NN land))))))) (. .)))
Chemical fertilizers are of great help, but the waste products of animals and decaying remains of plants should also be put on the land.
amod
Degree=Pos
Chemical
Chemical
ADJ
JJ
nsubj
Number=Plur
fertilizer
fertilizers
NOUN
NNS
cop
Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin
be
are
AUX
VBP
case
of
of
ADP
IN
amod
Degree=Pos
great
great
ADJ
JJ
root
Number=Sing
help
help
NOUN
NN
punct
,
,
PUNCT
,
cc
but
but
CCONJ
CC
det
Definite=Def|PronType=Art
the
the
DET
DT
compound
Number=Sing
waste
waste
NOUN
NN
nsubj:pass
Number=Plur
product
products
NOUN
NNS
case
of
of
ADP
IN
nmod
Number=Plur
animal
animals
NOUN
NNS
cc
and
and
CCONJ
CC
amod
VerbForm=Ger
decay
decaying
VERB
VBG
conj
Number=Plur
remains
remains
NOUN
NNS
case
of
of
ADP
IN
nmod
Number=Plur
plant
plants
NOUN
NNS
aux
VerbForm=Fin
should
should
AUX
MD
advmod
also
also
ADV
RB
aux:pass
VerbForm=Inf
be
be
AUX
VB
conj
Tense=Past|VerbForm=Part|Voice=Pass
put
put
VERB
VBN
case
on
on
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
obl
Number=Sing
land
land
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (PP (IN In) (NP (DT some) (NNS places))) (, ,) (NP (NP (PRP it))) (VP (VBZ is) (NP (NP (DT a) (NN habit)) (SBAR (S (VP (TO to) (VP (VB burn) (NP (NN waste) (NN material)) (S (VP (VBG lying) (PP (IN about)))))))))) (, ,) (CC but) (S (NP (JJ such) (NN burning)) (VP (VBZ destroys) (NP (NP (DT the) (JJ useful) (NN matter)) (PP (IN in) (NP (DT the) (JJ dead) (NNS plants)))))) (. .)))
In some places, it is a habit to burn waste material lying about, but such burning destroys the useful matter in the dead plants.
case
in
In
ADP
IN
det
some
some
DET
DT
obl
Number=Plur
place
places
NOUN
NNS
punct
,
,
PUNCT
,
expl
Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs
it
it
PRON
PRP
cop
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
be
is
AUX
VBZ
det
Definite=Ind|PronType=Art
a
a
DET
DT
root
Number=Sing
habit
habit
NOUN
NN
mark
to
to
PART
TO
csubj
VerbForm=Inf
burn
burn
VERB
VB
compound
Number=Sing
waste
waste
NOUN
NN
obj
Number=Sing
material
material
NOUN
NN
xcomp
VerbForm=Ger
lie
lying
VERB
VBG
obl
about
about
ADP
IN
punct
,
,
PUNCT
,
cc
but
but
CCONJ
CC
amod
Degree=Pos
such
such
ADJ
JJ
nsubj
Number=Sing
burning
burning
NOUN
NN
conj
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
destroy
destroys
VERB
VBZ
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
useful
useful
ADJ
JJ
obj
Number=Sing
matter
matter
NOUN
NN
case
in
in
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
dead
dead
ADJ
JJ
nmod
Number=Plur
plant
plants
NOUN
NNS
punct
.
.
PUNCT
.
(ROOT (S (SBAR (IN Although) (S (NP (NP (DT the) (NNS ashes)) (SBAR (WHNP (WDT that)) (S (VP (VBP are) (VP (VBN left)))))) (VP (VBP are) (ADJP (JJ valuable)) (SBAR (WHADVP (WRB when)) (S (VP (VBN put) (PP (IN on) (NP (DT the) (NN land))))))))) (, ,) (NP (NP (DT a) (JJR better) (NN practice))) (VP (VBZ is) (S (VP (TO to) (VP (VB bury) (NP (DT the) (NN waste)) (SBAR (IN so) (IN that) (S (NP (PRP it)) (VP (VBZ decays) (CC and) (VBZ increases) (NP (DT the) (NN humus)) (PP (IN in) (NP (DT the) (NN soil)))))))))) (. .)))
Although the ashes that are left are valuable when put on the land, a better practice is to bury the waste so that it decays and increases the humus in the soil.
mark
although
Although
SCONJ
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
nsubj
Number=Plur
ash
ashes
NOUN
NNS
nsubj:pass
PronType=Rel
that
that
PRON
WDT
aux:pass
Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin
be
are
AUX
VBP
acl:relcl
Tense=Past|VerbForm=Part|Voice=Pass
leave
left
VERB
VBN
cop
Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin
be
are
AUX
VBP
advcl
Degree=Pos
valuable
valuable
ADJ
JJ
advmod
PronType=Int
when
when
ADV
WRB
advcl
Tense=Past|VerbForm=Part
put
put
VERB
VBN
case
on
on
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
obl
Number=Sing
land
land
NOUN
NN
punct
,
,
PUNCT
,
det
Definite=Ind|PronType=Art
a
a
DET
DT
amod
Degree=Cmp
good
better
ADJ
JJR
nsubj:outer
Number=Sing
practice
practice
NOUN
NN
cop
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
be
is
AUX
VBZ
mark
to
to
PART
TO
root
VerbForm=Inf
bury
bury
VERB
VB
det
Definite=Def|PronType=Art
the
the
DET
DT
obj
Number=Sing
waste
waste
NOUN
NN
mark
so
so
SCONJ
IN
fixed
that
that
SCONJ
IN
nsubj
Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs
it
it
PRON
PRP
advcl
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
decay
decays
VERB
VBZ
cc
and
and
CCONJ
CC
conj
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
increase
increases
VERB
VBZ
det
Definite=Def|PronType=Art
the
the
DET
DT
obj
Number=Sing
humus
humus
NOUN
NN
case
in
in
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
obl
Number=Sing
soil
soil
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (NFP  ))
root
PUNCT
NFP
(ROOT (S (PP (IN In) (NP (DT the) (NN past))) (, ,) (SBAR (WHADVP (WRB when)) (S (NP (DT the) (NN world) (NN population)) (VP (VBD was) (ADJP (ADJP (RB much) (JJR lower)) (SBAR (IN than) (S (NP (PRP it)) (VP (VBZ is) (ADVP (RB now))))))))) (, ,) (NP (DT a) (NN man)) (VP (VBD had) (NP (NP (JJ little) (NN difficulty)) (PP (IN in) (NP (JJ ordinary) (NNS times))) (PP (IN in) (S (VP (VBG growing) (NP (NP (DT the) (NN food)) (SBAR (WHNP (WDT that)) (S (VP (VBD was) (VP (VBN needed))))))))))) (. .)))
In the past, when the world population was much lower than it is now, a man had little difficulty in ordinary times in growing the food that was needed.
case
in
In
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
obl
Number=Sing
past
past
NOUN
NN
punct
,
,
PUNCT
,
advmod
PronType=Int
when
when
ADV
WRB
det
Definite=Def|PronType=Art
the
the
DET
DT
compound
Number=Sing
world
world
NOUN
NN
nsubj
Number=Sing
population
population
NOUN
NN
cop
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
be
was
AUX
VBD
advmod
much
much
ADV
RB
advcl
Degree=Cmp
low
lower
ADJ
JJR
mark
than
than
SCONJ
IN
nsubj
Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs
it
it
PRON
PRP
advcl
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
be
is
AUX
VBZ
advmod
now
now
ADV
RB
punct
,
,
PUNCT
,
det
Definite=Ind|PronType=Art
a
a
DET
DT
nsubj
Number=Sing
man
man
NOUN
NN
root
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
have
had
VERB
VBD
amod
Degree=Pos
little
little
ADJ
JJ
obj
Number=Sing
difficulty
difficulty
NOUN
NN
case
in
in
ADP
IN
amod
Degree=Pos
ordinary
ordinary
ADJ
JJ
nmod
Number=Plur
time
times
NOUN
NNS
mark
in
in
SCONJ
IN
advcl
VerbForm=Ger
grow
growing
VERB
VBG
det
Definite=Def|PronType=Art
the
the
DET
DT
obj
Number=Sing
food
food
NOUN
NN
nsubj:pass
PronType=Rel
that
that
PRON
WDT
aux:pass
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
be
was
AUX
VBD
acl:relcl
Tense=Past|VerbForm=Part|Voice=Pass
need
needed
VERB
VBN
punct
.
.
PUNCT
.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (DT a) (NN field)) (VP (VBD had) (VP (VP (VBN been) (VP (VBN used) (NP (DT some) (NNS years)))) (CC and) (VP (VBD had) (VP (VBN become) (ADJP (JJ tired)))))))) (, ,) (NP (DT the) (NN farmer)) (VP (MD could) (VP (VB move) (PP (IN to) (NP (DT another) (NN place))))) (. .)))
When a field had been used some years and had become tired, the farmer could move to another place.
advmod
PronType=Int
when
When
ADV
WRB
det
Definite=Ind|PronType=Art
a
a
DET
DT
nsubj:pass
Number=Sing
field
field
NOUN
NN
aux
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
have
had
AUX
VBD
aux:pass
Tense=Past|VerbForm=Part
be
been
AUX
VBN
advcl
Tense=Past|VerbForm=Part|Voice=Pass
use
used
VERB
VBN
det
some
some
DET
DT
obl:tmod
Number=Plur
year
years
NOUN
NNS
cc
and
and
CCONJ
CC
aux
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
have
had
AUX
VBD
conj
Tense=Past|VerbForm=Part
become
become
VERB
VBN
xcomp
Degree=Pos
tired
tired
ADJ
JJ
punct
,
,
PUNCT
,
det
Definite=Def|PronType=Art
the
the
DET
DT
nsubj
Number=Sing
farmer
farmer
NOUN
NN
aux
VerbForm=Fin
could
could
AUX
MD
root
VerbForm=Inf
move
move
VERB
VB
case
to
to
ADP
IN
det
another
another
DET
DT
obl
Number=Sing
place
place
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (NP (DT The) (JJ tired) (NN land)) (ADVP (RB then)) (ADVP (RB slowly)) (VP (VBD recovered)) (. .)))
The tired land then slowly recovered.
det
Definite=Def|PronType=Art
the
The
DET
DT
amod
Degree=Pos
tired
tired
ADJ
JJ
nsubj
Number=Sing
land
land
NOUN
NN
advmod
PronType=Dem
then
then
ADV
RB
advmod
slowly
slowly
ADV
RB
root
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
recover
recovered
VERB
VBD
punct
.
.
PUNCT
.
(ROOT (S (S (ADVP (RB Gradually)) (NP (NP (NNS grasses)) (CC and) (NP (JJ other) (NNS plants))) (VP (MD would) (VP (VB appear) (PP (IN on) (NP (PRP it)))))) (CC and) (S (NP (PRP$ its) (JJ productive) (NN power)) (VP (MD would) (ADVP (RB slowly)) (VP (VB return) (PP (IN to) (NP (JJ normal))) (PP (IN through) (NP (PRP$ their) (NN decay)))))) (. .)))
Gradually grasses and other plants would appear on it and its productive power would slowly return to normal through their decay.
advmod
gradually
Gradually
ADV
RB
nsubj
Number=Plur
grasses
grasses
NOUN
NNS
cc
and
and
CCONJ
CC
amod
Degree=Pos
other
other
ADJ
JJ
conj
Number=Plur
plant
plants
NOUN
NNS
aux
VerbForm=Fin
would
would
AUX
MD
root
VerbForm=Inf
appear
appear
VERB
VB
case
on
on
ADP
IN
obl
Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs
it
it
PRON
PRP
cc
and
and
CCONJ
CC
nmod:poss
Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs
its
its
PRON
PRP$
amod
Degree=Pos
productive
productive
ADJ
JJ
nsubj
Number=Sing
power
power
NOUN
NN
aux
VerbForm=Fin
would
would
AUX
MD
advmod
slowly
slowly
ADV
RB
conj
VerbForm=Inf
return
return
VERB
VB
case
to
to
ADP
IN
obl
Degree=Pos
normal
normal
ADJ
JJ
case
through
through
ADP
IN
nmod:poss
Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs
their
their
PRON
PRP$
obl
Number=Sing
decay
decay
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (S (CC But) (NP (NN nature)) (, ,) (S (VP (VBN left) (ADVP (RB alone)))) (, ,) (VP (MD would) (VP (VB take) (NP (DT a) (JJ long) (NN time)) (S (VP (TO to) (VP (VB bring) (ADVP (RB back)) (NP (DT the) (NN land)) (PP (IN to) (NP (PRP$ its) (JJ former) (NN state))))))))) (: ;) (S (S (NP (NP (DT the) (NN length)) (PP (PP (IN of) (NP (NN time))) (VP (VBN required)))) (VP (MD would) (VP (VB depend) (PP (IN on) (NP (JJ local) (NNS conditions)))))) (, ,) (CC but) (S (NP (PRP it)) (VP (MD might) (ADVP (RB well)) (VP (VB be) (NP (CD ten) (NNS years)))))) (. .)))
But nature, left alone, would take a long time to bring back the land to its former state; the length of time required would depend on local conditions, but it might well be ten years.
cc
but
But
CCONJ
CC
nsubj
Number=Sing
nature
nature
NOUN
NN
punct
,
,
PUNCT
,
acl
Tense=Past|VerbForm=Part
leave
left
VERB
VBN
advmod
alone
alone
ADV
RB
punct
,
,
PUNCT
,
aux
VerbForm=Fin
would
would
AUX
MD
root
VerbForm=Inf
take
take
VERB
VB
det
Definite=Ind|PronType=Art
a
a
DET
DT
amod
Degree=Pos
long
long
ADJ
JJ
obj
Number=Sing
time
time
NOUN
NN
mark
to
to
PART
TO
csubj
VerbForm=Inf
bring
bring
VERB
VB
advmod
back
back
ADV
RB
det
Definite=Def|PronType=Art
the
the
DET
DT
obj
Number=Sing
land
land
NOUN
NN
case
to
to
ADP
IN
nmod:poss
Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs
its
its
PRON
PRP$
amod
Degree=Pos
former
former
ADJ
JJ
obl
Number=Sing
state
state
NOUN
NN
punct
;
;
PUNCT
:
det
Definite=Def|PronType=Art
the
the
DET
DT
nsubj
Number=Sing
length
length
NOUN
NN
case
of
of
ADP
IN
nmod
Number=Sing
time
time
NOUN
NN
acl
Tense=Past|VerbForm=Part
require
required
VERB
VBN
aux
VerbForm=Fin
would
would
AUX
MD
parataxis
VerbForm=Inf
depend
depend
VERB
VB
case
on
on
ADP
IN
amod
Degree=Pos
local
local
ADJ
JJ
obl
Number=Plur
condition
conditions
NOUN
NNS
punct
,
,
PUNCT
,
cc
but
but
CCONJ
CC
nsubj
Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs
it
it
PRON
PRP
aux
VerbForm=Fin
might
might
AUX
MD
advmod
Degree=Pos
well
well
ADV
RB
cop
VerbForm=Inf
be
be
AUX
VB
nummod
NumForm=Word|NumType=Card
ten
ten
NUM
CD
conj
Number=Plur
year
years
NOUN
NNS
punct
.
.
PUNCT
.
(ROOT (NFP  ))
root
PUNCT
NFP
(ROOT (S (NP (NP (PRP It))) (VP (VBZ is) (NP (DT a) (JJ bad) (NN practice)) (S (VP (TO to) (VP (VB grow) (NP (NP (DT the) (JJ same) (NN crop)) (PP (IN in) (NP (DT a) (NN field)))) (NP (NP (NN year)) (PP (IN after) (NP (NN year)))))))) (. .)))
It is a bad practice to grow the same crop in a field year after year.
expl
Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs
it
It
PRON
PRP
cop
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
be
is
AUX
VBZ
det
Definite=Ind|PronType=Art
a
a
DET
DT
amod
Degree=Pos
bad
bad
ADJ
JJ
root
Number=Sing
practice
practice
NOUN
NN
mark
to
to
PART
TO
csubj
VerbForm=Inf
grow
grow
VERB
VB
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
same
same
ADJ
JJ
obj
Number=Sing
crop
crop
NOUN
NN
case
in
in
ADP
IN
det
Definite=Ind|PronType=Art
a
a
DET
DT
obl
Number=Sing
field
field
NOUN
NN
obl:tmod
Number=Sing
year
year
NOUN
NN
case
after
after
ADP
IN
nmod
Number=Sing
year
year
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (SBAR (IN If) (S (NP (DT the) (NN crop)) (VP (VBZ is) (VP (VBN changed))))) (, ,) (NP (DT the) (NN land)) (VP (MD will) (VP (VB suffer) (ADVP (JJR less)) (SBAR (IN because) (S (NP (PRP it)) (VP (VBZ is) (VP (VBN treated) (CC and) (VBN used) (PP (IN in) (NP (DT a) (JJ different) (NN way))))))))) (. .)))
If the crop is changed, the land will suffer less because it is treated and used in a different way.
mark
if
If
SCONJ
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
nsubj:pass
Number=Sing
crop
crop
NOUN
NN
aux:pass
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
be
is
AUX
VBZ
advcl
Tense=Past|VerbForm=Part|Voice=Pass
change
changed
VERB
VBN
punct
,
,
PUNCT
,
det
Definite=Def|PronType=Art
the
the
DET
DT
nsubj
Number=Sing
land
land
NOUN
NN
aux
VerbForm=Fin
will
will
AUX
MD
root
VerbForm=Inf
suffer
suffer
VERB
VB
advmod
Degree=Cmp
less
less
ADJ
JJR
mark
because
because
SCONJ
IN
nsubj:pass
Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs
it
it
PRON
PRP
aux:pass
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
be
is
AUX
VBZ
advcl
Tense=Past|VerbForm=Part|Voice=Pass
treat
treated
VERB
VBN
cc
and
and
CCONJ
CC
conj
Tense=Past|VerbForm=Part
use
used
VERB
VBN
case
in
in
ADP
IN
det
Definite=Ind|PronType=Art
a
a
DET
DT
amod
Degree=Pos
different
different
ADJ
JJ
obl
Number=Sing
way
way
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (NP (JJ Different) (NNS plants)) (VP (VBP have) (NP (NP (JJ different) (NNS effects)) (PP (IN on) (NP (DT the) (NN soil))))) (. .)))
Different plants have different effects on the soil.
amod
Degree=Pos
different
Different
ADJ
JJ
nsubj
Number=Plur
plant
plants
NOUN
NNS
root
Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin
have
have
VERB
VBP
amod
Degree=Pos
different
different
ADJ
JJ
obj
Number=Plur
effect
effects
NOUN
NNS
case
on
on
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
nmod
Number=Sing
soil
soil
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (S (ADVP (RB Therefore)) (, ,) (NP (NP (DT a) (NN change)) (PP (IN of) (NP (NN crop)))) (VP (MD will) (VP (VB do) (NP (NP (JJR less) (NN harm)) (PP (IN than) (NP (NP (DT the) (NN growing)) (PP (IN of) (NP (DT the) (JJ same) (NN crop)))))) (NP (NP (NN year)) (PP (IN after) (NP (NN year))))))) (CC and) (S (NP (NP (DT a) (JJ regular) (NN change)) (PP (IN to) (NP (NN grass)))) (VP (MD will) (VP (VB do) (ADJP (JJ good)) (PP (IN to) (NP (DT the) (NN soil)))))) (. .)))
Therefore, a change of crop will do less harm than the growing of the same crop year after year and a regular change to grass will do good to the soil.
advmod
therefore
Therefore
ADV
RB
punct
,
,
PUNCT
,
det
Definite=Ind|PronType=Art
a
a
DET
DT
nsubj
Number=Sing
change
change
NOUN
NN
case
of
of
ADP
IN
nmod
Number=Sing
crop
crop
NOUN
NN
aux
VerbForm=Fin
will
will
AUX
MD
root
VerbForm=Inf
do
do
VERB
VB
amod
Degree=Cmp
less
less
ADJ
JJR
obj
Number=Sing
harm
harm
NOUN
NN
case
than
than
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
obl
Number=Sing
grow
growing
NOUN
NN
case
of
of
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
same
same
ADJ
JJ
nmod
Number=Sing
crop
crop
NOUN
NN
nmod:tmod
Number=Sing
year
year
NOUN
NN
case
after
after
ADP
IN
nmod
Number=Sing
year
year
NOUN
NN
cc
and
and
CCONJ
CC
det
Definite=Ind|PronType=Art
a
a
DET
DT
amod
Degree=Pos
regular
regular
ADJ
JJ
nsubj
Number=Sing
change
change
NOUN
NN
case
to
to
ADP
IN
nmod
Number=Sing
grass
grass
NOUN
NN
aux
VerbForm=Fin
will
will
AUX
MD
conj
VerbForm=Inf
do
do
VERB
VB
xcomp
Degree=Pos
good
good
ADJ
JJ
case
to
to
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
obl
Number=Sing
soil
soil
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (NP (JJ Much)) (VP (MD will) (ADVP (RB therefore)) (VP (VB be) (VP (VBN gained) (SBAR (IN if) (S (NP (JJ different) (NNS crops)) (VP (VBP are) (VP (VBN grown) (NP (CD one)) (PP (IN after) (NP (DT another))) (, ,) (NP (NP (DT a) (NN method)) (VP (VBN known) (PP (IN as) (NP (NP (DT the) (NN rotation)) (PP (IN of) (NP (NNS crops)))))))))))))) (. .)))
Much will therefore be gained if different crops are grown one after another, a method known as the rotation of crops.
nsubj:pass
Degree=Pos
much
Much
ADJ
JJ
aux
VerbForm=Fin
will
will
AUX
MD
advmod
Degree=Pos
therefore
therefore
ADV
RB
aux:pass
VerbForm=Inf
be
be
AUX
VB
root
Tense=Past|VerbForm=Part|Voice=Pass
gain
gained
VERB
VBN
mark
if
if
SCONJ
IN
amod
Degree=Pos
different
different
ADJ
JJ
nsubj:pass
Number=Plur
crop
crops
NOUN
NNS
aux:pass
Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin
be
are
AUX
VBP
advcl
Tense=Past|VerbForm=Part|Voice=Pass
grow
grown
VERB
VBN
xcomp
NumForm=Word|NumType=Card
one
one
NUM
CD
case
after
after
ADP
IN
obl
another
another
DET
DT
punct
,
,
PUNCT
,
det
Definite=Ind|PronType=Art
a
a
DET
DT
parataxis
Number=Sing
method
method
NOUN
NN
acl
Tense=Past|VerbForm=Part
know
known
VERB
VBN
case
as
as
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
obl
Number=Sing
rotation
rotation
NOUN
NN
case
of
of
ADP
IN
nmod
Number=Plur
crop
crops
NOUN
NNS
punct
.
.
PUNCT
.
When nature is left alone, a balance is reached among the animals and plants living in one area. But when man starts his work in nature, the balance is likely to be destroyed. He grows a crop and takes it away to eat; then there are no dead leaves to fall on the ground, holding water while it sinks into the surface, or decaying and adding humus to the soil. Unless a farmer acts with knowledge and skill, he is therefore most likely to make the land poorer. To take the place of the useful matter in the crops that he removes, he uses some kind of fertilizer. Chemical fertilizers are of great help, but the waste products of animals and decaying remains of plants should also be put on the land. In some places, it is a habit to burn waste material lying about, but such burning destroys the useful matter in the dead plants. Although the ashes that are left are valuable when put on the land, a better practice is to bury the waste so that it decays and increases the humus in the soil.  In the past, when the world population was much lower than it is now, a man had little difficulty in ordinary times in growing the food that was needed. When a field had been used some years and had become tired, the farmer could move to another place. The tired land then slowly recovered. Gradually grasses and other plants would appear on it and its productive power would slowly return to normal through their decay. But nature, left alone, would take a long time to bring back the land to its former state; the length of time required would depend on local conditions, but it might well be ten years.  It is a bad practice to grow the same crop in a field year after year. If the crop is changed, the land will suffer less because it is treated and used in a different way. Different plants have different effects on the soil. Therefore, a change of crop will do less harm than the growing of the same crop year after year and a regular change to grass will do good to the soil. Much will therefore be gained if different crops are grown one after another, a method known as the rotation of crops.