Effect of nitrogen supply on the sucrose percentage of sugar beets PDF
Preview Effect of nitrogen supply on the sucrose percentage of sugar beets
NOTE TO USERS This reproduction is the best copy available. UMI® Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. UNIVERSITY OF NEBRASKA. LIBRARIES LSAIIUSCRIPT THESIS Permission to use this thesis has been given by the author or department under whose direction it is written. Approved by author Approved by department It is expected that proper credit will be given for any quotations taken from this work. Extensive copying or pub lication of the thesis in whole or in part requires the written consent of the author or department. This thesis has been used by the following person, whose signatures attest their acceptance of the above restrictions. A library which borrows this thesis for use by its patrons is expected to secure the signature of each user. NAMfe AID ADDRESEj _________ Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. EFFECT OF NITROGEN SUPPLY ON THE SUCROSE PERCENTAGE OF SUGAR BEEPS by Kenneth Wilford Hill A THESIS Presented to the Feeulty of The Graduate College In the University of Nebraska In Partial Fulfillment of Requirements For the Degree of Doctor of Philosophy Department of Agronomy Under the Supervision of Dr. T. A. Klesaelbaoh Lincoln, Nebraska June 80, 1951. Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. UMI Number: DP13624 INFORMATION TO USERS The quality of this reproduction is dependent upon the quality of the copy submitted. Broken or indistinct print, colored or poor quality illustrations and photographs, print bleed-through, substandard margins, and improper alignment can adversely affect reproduction. In the unlikely event that the author did not send a complete manuscript and there are missing pages, these will be noted. Also, if unauthorized copyright material had to be removed, a note will indicate the deletion. ® UMI UMI Microform DP13624 Copyright 2006 by ProQuest Information and Learning Company. All rights reserved. This microform edition is protected against unauthorized copying under Title 17, United States Code. ProQuest Information and Learning Company 300 North Zeeb Road P.O. Box 1346 Ann Arbor, Ml 48106-1346 Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. ACK»0WL8DaSMElfr The author vishea to expreaa hit gratitude to the Experimental Farm Servloe for the provieion of the field and laboratory faoilitiee with whioh theee inveetigationa were oarried out. Aoknovledgement ie made also for the adviee of Or. H. F. Rhoadea and the oontinued oounsel of Or. f. A. Xieaeelbaeh. 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TABLE OP CONTENTS Introduction....................... .................. 1 Literature Review............ 3 Influence of Nitrogen on Sucrose ...... 4 Influence of Nitrogen on Composition of the Beet... 8 Glutamic Acid Content of Sugar Beets ....... 9 Experimental Procedure ................................. 12 Field Experiments and Laboratory Analyses ............12 Description and History of Rotations ..... 12 Addition of Nitrogen Fertilizer to Rotations ..... 13 Supplementary Studies with Nitrogen Fertilizer .... 14 Soil Sampling Method......................... 14 Petiole Sampling Method ............ 15 Root Sampling Method.............. 15 Determination of Percentage Sucrose .......... 16 Determination of Dry Matter............. 16 Determination of Total Nitrogen ..... 16 Determination of Ash, Fat, and Fibre ........16 Greenhouse Experiment .......... 17 Microbiological Assay for Glutamic Acid .......... 20 Extraction Procedure ......... 20 Assay with Lactobacillus Arablnosus 17-5 ....... 21 Experimental Results ...... 25 Field Experiments and Laboratory Analyses ....... 25 Ten-year Average Yields and Sucrose Percentages ... 25 Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. Raaulta of Soil Analyaaa ..... 83 Ralationahlp batwaan Soil Ritrata and Suoroaa Gontant .... 58 laislti of Patiola Analyaaa...... 38 Ralationahlp batwaan Patiola Rltrataa and Sueroaa Gontant .... 54 Ralationahlp batwaan Total Kitrogan of Patlolaa and Suoroaa Gontant .... 55 Sffaeta of Adding Nitrogan Partlllaar...... 37 Supplaaantary Studlaa with Rltrogan Partlllaar ... 41 Gorralatlona batwaan Plant Gonatltuanta...... 48 Ralationahlp batwaan Rltrogan and Suoroaa Pareantagaa ..... 44 Ghamlaal Composition of Roota from Laguna and Ron-Leguma Rotatlona...... 45 Raaulta of Graanhouaa Experiments ............. 48 Top Growth aa Affaotad by Rltrogan Supply ....... 48 Ghaaloal Analyaaa of Root Saotlona ......... 49 Xlerobiologleal Aaaay for Glutamic Aold ......... 51 Dlaouaalon ...... 56 Summary ..... 68 Lltaratura Gltad .... 65 Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. ISTRODUCTIOV Extensive European and American investigations have eetabllabed that a ralationahlp exlata between nitrogen metabolism and suorose eontent In the augar beet* An excessive amount of available nitrogen in the aoll la known to decrease the aueroae peroentage of the augar beet orop where aa plant a having only a United eupply of nitrogen uaually eontain a high peroentage of aueroae but nay be reduoed in yield* In aone areaa applloationa of nanure or nltrogenoua fertlliaer to augar beeta have been reported to depreaa the aueroae eontent but experlnenta elaewhere have not aupported theae findings. In Southern Alberta aueroae peroentage has been reduoed In augar beeta grown after several years of alfalfa but haa been unaffected by applloationa of manure. This Investigation was initiated at the Dominion Experimental Station, Lethbridge, Alberta, to study the relationship between available aoll nitrogen and aueroae eontent of sugar beeta under this northern oliaatle environment* The experi ments were planned to afford a physiologic explanation of this relationship as well as to provide information for the guidance of augar beeta producers who desire to uae agronomic practices which will result in a maximum production of augar per aere* Irrigation la praetioed extenaively in the Lethbridge area and theae experiments were conducted on irrigated land* The climate of the area la of the middle latitude ateppe type and haa an average annual growing season of 141 daya. The Reproduced with permission of the copyright owner. Further reproduction prohibited without permission.
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