Development and activities of roots of crop plants: a study in crop ecology
Gespeichert in:
| Hauptverfasser: | , , |
|---|---|
| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
Washington, DC
Carnegie Inst.
1922
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| Schriftenreihe: | Publication / Carnegie Institution of Washington
316 |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | Literaturverz. S. 116 - 117 |
| Beschreibung: | VI, 117 S. zahlr. Ill. und graph. Darst. |
Internformat
MARC
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| 100 | 1 | |a Weaver, John Ernest |e Verfasser |4 aut | |
| 245 | 1 | 0 | |a Development and activities of roots of crop plants |b a study in crop ecology |c by John E. Weaver, Frank C. Jean and John W. Crist |
| 264 | 1 | |a Washington, DC |b Carnegie Inst. |c 1922 | |
| 300 | |a VI, 117 S. |b zahlr. Ill. und graph. Darst. | ||
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| 490 | 1 | |a Publication / Carnegie Institution of Washington |v 316 | |
| 500 | |a Literaturverz. S. 116 - 117 | ||
| 700 | 1 | |a Jean, Frank C. |e Verfasser |4 aut | |
| 700 | 1 | |a Christ, John W. |e Verfasser |4 aut | |
| 810 | 2 | |a Carnegie Institutio |t Publication |v 316 |w (DE-604)BV035415500 |9 316 | |
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Datensatz im Suchindex
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| adam_text | DEVELOPMENT AND ACTIVITIES OF ROOTS OF
CROP PLANTS
A STUDY IN CROP ECOLOGY
BY
JOHN E WEAVER, FRANK C, JEAN, AND JOHN W CRIST
Carnegie/Biic her
r epositum im
, IGNATIUS COLLEG
VALKE ffQ/i,,)
PUBLISHED BY THE CARNEGIE INSTITUTION OF WASHINGTON
WASHINGTON, MAY, 1922
CONTENTS
• I ! / I FAGE
List of illustrations Js v
Introduction !!; i1 3
I INVESTIGATIONS AT PERU, NEBRASKA, IN 1919 !
University No 21 oats, Avena sativa):A P 8
Swedish Select oats, Avena sativa J11 11
Durum wheat, Triticum durum [ ]3
Marquis wheat, Triticum cestivum i ]5
Manchuria barley, Hordeum vulgare U IS
Corn, Zea mays indentata I 21
Earlier investigations of corn • ;:J 25
Potato, Solarium tuberosum - 2(
Earlier investigations of potatoes ! 29
Comparison of root sj stems 30
Environmental conditions of growth • 32
Summary of root development •! 38
II INVESTIGATIONS AT LINCOLN, NEBRASKA, IN 1919 AND 1920
Oats, Avena sativa 41
Barley, Hordeum vulgare 48
Wheat, Triticum cestivum ! 49
Alfalfa, Medicago sativa : 52
Sweet clover, Melilolus alba 54
Comparison of root systems 55
III INVESTIGATIONS AT PHILLIPSBURG, KANSAS, IN 1920
Oats, Avena sativa : 57
Barley, Hoirdeum vulgare 59
Wheat, Triticum cestivum 59
Alfalfa, Medicago sativa : CO
Sweet clover, Melilolus alba • 00
Summary of crop development (id
IV INVESTIGATIONS AT BURLINGTON, COLORADO, IN 1920
Wheat, Triticum cestivum ( ,2
Oats, Avena sativa 67
Barley, Hordeum vulgare C S
Alfalfa, Medicago sativa C9
Sweet clover, Melilotus alba 70
Summary of crop development 7 L
Summary of environment and crop development u t all stations, 1920 72
V INVESTIGATIONS AT ALL STATIONS IN 1921
Investigations at Peru, Nebraska 78
Investigations at Lincoln, Phillipsburg, and Burlijigton 80
Summary of environment and crop development S7
Correlation of crop development with that of native vegetation 89
VI DEPTHS AT WHICH PLANTS ABSORB WATER AND NUTRIENTS
Preliminary experiments 93
Field experiments, 1920 94
Greenhouse experiments, 1920-21-;-: 100
Field experiments, 1921 105
Summary 114
Bibliography 116
HI
LIST OF ILLUSTRATIONS;
PLATES
PLATE 1
A Iowa Silver Mine com 57 days old; root system shown in fig 8
B Potato 2 3 feet high on July 8; root system shown in fig 11
C Corn on September 2; root system shown in fig 9
D Trench used in examining the roots of cereals
PLATE 2
A Marquis Spring wheat at Burlington, 1920
B Marquis Spring wheat from a square meter at Burlington (left), Phillipsburg, and
Lincoln
PLATE 3
A White Kherson oats from a square meter at Burlington (left), Phillipsburg, and
Lincoln
B Manchuria barley from a square meter at Burlington (left), Phillipsburg, and
Lincoln
PLATE 4
A Four hundred plants of alfalfa from lower crop plats (left) and upper crop plats
at Lincoln; and from Phillipsburg and Burlington, respectively
B Three hundred plants of sweet clover from lower crop plats (left) and upper crop
plats at Lincoln; and from Phillipsburg and Burlington, respectively
PLATE 5
A Wheat from Lincoln (left), Phillipsburg, and Burlington, May 18-21
B Barley from Lincoln (left), Phillipsburg, and Burlington, May 18-21
PLATE 6
A Oats at Lincoln, May 18
B Oats at Phillipsburg, May 19
C Oats at Burlington, May 20
PLATE 7
A Wheat from Lincoln (left), Phillipsburg, and Burlington, June 10
B Barley from Lincoln (left), Phillipsburg, and Burlington, June 10
PLATE 8
A Oats at Lincoln, June 10
B Oats at Phillipsburg, June 10
C Oats at Burlington, June 10;
PLATE 9
A Barley grown in container with wax seals at 6-inch intervals
B Same with upper portion of container removed
C Wax seal at depth of 2 feet (left) showing the penetration of the seal by roots and
their abundance under field conditions Fertilized soil at 2 5 feet depth
filled with copiously branched roots
D Arrangement of containers in greenhouse experiment, 1920-21
PLATE 10
A Development of barley on December 11 in unaerated, fertilized soil
B Development of barley on December 11 in aerated, unfertilized soil
PLATE 11 I
A Development of crop on March 12 in fertilized soil
B In unfertilized soil
PLATE 12
A General view of one row of containers, May 17
B Detailed view of barley and potatoes, May 17
PLATE 13
A Potatoes_and barley on June 13 - - -
B Native grasses on August 15, at the time of examination
PLATE 14
A Development of corn, June 5
B Development of corn, July 10
IV
List of Illustrations v,
TEXT-FIGURES
PAOE
1 (A) Root system of University No 21 oats 59 days old; (B) Swedish Select
oats 60 days old i • 10
2 (A) University No 21 oats; (B) Swedish Select oats; at maturity 12
3 (A) Marquis wheat 20 days old; (B) 70 days:old; (C) Durum wheat 60 days old 14
4 (A) Durum wheat; (B) Marquis wheat; at maturity 16
5 (A) Manchuria barley 20 days old; (B) 54 days old 19
6 Manchuria barley at maturity i ; 20
7 Root system of Iowa Silver Mine corn136 days old— 21
8 Root system of corn on July 5 Sj- • 23,
9 Root system of corn on September, ? iJ | facing 24
10 One-half of root 83 stem of a potato plant 56 days old 27
11 One-half of root system of a mature potato plant 28
12 Water-content in excess of hygroscopic coefficient from March 31 to June 16 34
13 Water-content in excess of hygroscopic) coefficient in the several crop plats
on May 30 : ! 34
14 Water-content in excess of hygroscopic coefficient in the several crop plats
on June 23 35
15 Soil-temperatures at various depths during 1919 37
16 Average day and night temperatures (solid lines) and average maximum and
minimum temperatures ! 37
17 Oats 31 days old 42
18 Oats 45 days old 43
19 Oats 60 days old 44
20 Average daily air temperature (long broken lines), soil temperature (short
broken lines), and humidity (solid line), 1920 4(3
21 (A) Oats; (B) wheat; at time of blossoming facing 40
22 Wheat 31 days old 50
23 (A) Wheat 45 days old; (B) 60 days old 51
24 (A) Alfalfa 63 days old; (B) sweet clover 63 days old 53
25 (A) Alfalfa 132 days old; (B) sweet clover 115 days old 55
26 Average; day and average night air temperatures and average daily soil
temperature (broken line) at Phillipsburg, 1920 59
27 Wheat roots showing normal differences in branching at Lincoln, L, and
Burlington, B 1, at depth of 1 5 feet; 2, root-ends 64
28 Average day and average night air temperatures and average daily soil
temperature (broken line), Burlington, 1920 05
29 Average day humidity (lower lines) and average night humidity (upper lines)
at Lincoln (solid lines), and Burlington (broken lines),, 1920 66
30 Oats at maturity, Burlington, 1921 67
31 Alfalfa excavated at Burlington, June 28, 1921, during the second year of
1 growth 69
32 Mean precipitation in inches (black) and precipitation for 1920 at Lincoln
(left), Phillipsburg, and Burlington 72
33 Average daily soil temperature at Lincoln (solid line), Phillipsburg (long
broken lines), and Burlington (short broken lines), 1920 73
34 Average daily air temperature at Lincoln (solid line), Phillipsburg (long
broken lines), and Burlington (short broken lines), 1920 73
35 Hygrothermograph records from Lincoln (upper) and Burlington, June 1921;
light lines temperature, heavy lines humidity 74
36 Average daily evaporation at Lincoln (solid line), Phillipsburg (long broken
lines), and Burlington (short broken lines), 1920 75
37 Average day air temperatures (heavy lines) and average night temperatures
(light lines) at Lincoln (solid lines), Phillipsburg (long broken lines),
and Burlington (short broken lines), 1921 83
List of Illustrations
TEXT-FIGURES—continued
PAGE
• Average daily evaporation at Lincoln (solid line), Phillipsburg (long broken
lines), and Burlington (short broken lines), 19211: 84
Mean precipitation in inches (black) and precipitation for 1921 at Lincoln ,
(left), Phillipsburg, and Burlington 87
Diagram of containers and development of barley, 1920 Positions of wax
seals, 6 inches apart, indicated by the cross-lines 94
Average daily temperature (long broken lines), humidity (upper solid line),
and average daily evaporation at Lincoln, 1921 • 106
Diagram of containers and root development of crops, 1921 Horizontal
lines (6 inches apart, except in last two) indicate position of wax
seals and double vertical lines position of nutrients 107
i
|
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| language | English |
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| physical | VI, 117 S. zahlr. Ill. und graph. Darst. |
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| series2 | Publication / Carnegie Institution of Washington |
| spelling | Weaver, John Ernest Verfasser aut Development and activities of roots of crop plants a study in crop ecology by John E. Weaver, Frank C. Jean and John W. Crist Washington, DC Carnegie Inst. 1922 VI, 117 S. zahlr. Ill. und graph. Darst. txt rdacontent n rdamedia nc rdacarrier Publication / Carnegie Institution of Washington 316 Literaturverz. S. 116 - 117 Jean, Frank C. Verfasser aut Christ, John W. Verfasser aut Carnegie Institutio Publication 316 (DE-604)BV035415500 316 HEBIS Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=024995263&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Weaver, John Ernest Jean, Frank C. Christ, John W. Development and activities of roots of crop plants a study in crop ecology |
| title | Development and activities of roots of crop plants a study in crop ecology |
| title_auth | Development and activities of roots of crop plants a study in crop ecology |
| title_exact_search | Development and activities of roots of crop plants a study in crop ecology |
| title_full | Development and activities of roots of crop plants a study in crop ecology by John E. Weaver, Frank C. Jean and John W. Crist |
| title_fullStr | Development and activities of roots of crop plants a study in crop ecology by John E. Weaver, Frank C. Jean and John W. Crist |
| title_full_unstemmed | Development and activities of roots of crop plants a study in crop ecology by John E. Weaver, Frank C. Jean and John W. Crist |
| title_short | Development and activities of roots of crop plants |
| title_sort | development and activities of roots of crop plants a study in crop ecology |
| title_sub | a study in crop ecology |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=024995263&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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