Rothamsted Experimental Station Report for 1968 - Part 2
Creators: name: Rothamsted Experimental Station
Publisher: name: Lawes Agricultural Trust
Year: 1969
Subjects: subject: crop yield
subject: meteorological observations
subject: fertilizer application
subject: wheat
subject: soil
subject: crop rotation
subject: agricultural research
subject: agronomy
subject: barley
subject: fallowing
subject: farmyard manure
subject: nitrogen fertilizers
subject: rothamsted research
subject: rothamsted classical experiments
subject: broadbalk long-term experiment
subject: park grass long-term experiment
subject: rothamsted long-term experiments
subject: hoosfield alternate wheat and fallow long-term experiment
subject: exhaustion land long-term experiment
subject: broadbalk wilderness experiment
subject: geescroft wilderness experiments
subject: agdell long-term experiment
subject: barnfield long-term experiment
subject: Garden clover long-term experiment
subject: fungal diseases
subject: take all fungus
subject: nematodes
subject: population dynamics
subject: nitrogen
subject: Nitrogen fixation
subject: rhiszosphere
subject: weeds

description: Scanned PDF of Rothamsted Experimental Station Report for 1968 - Part 2
description: ROTHAMSTED EXPERIMENTAL STATION REPORT FOR 1968 PART 2..............................................1<br>PHOTOGRAPH OF SIR JOHN BENNET LAWES 1814-1900 AND SIR JOSEPH HENRY GILBERT 1817-1901................2<br>THE BROADBALK WHEAT EXPERIMENT......................................................................3<br>CONTENTS............................................................................................5<br>1. FOREWORD.........................................................................................7<br>2. HISTORICAL INTRODUCTION .........................................................................12<br>3. The Broadbalk Yields.............................................................................26<br>Investigations into the Effects of Weather on Yields................................................46<br>4. The Plant Nutrients in Crops Grown on Broadbalk..................................................50<br>5. The Soils of Broadbalk. Morphology and Classification of Broadbalk Soils.........................63<br>The Minerology of Broadbalk Soils...................................................................81<br>The Origin and Development of the Soils.............................................................89<br>Plant Nutrients in Broadbalk Soils..................................................................93<br>6. FUNGUS DISEASES OF WHEAT ON BROADBALK, 1843-1967 ..............................................116<br>Photographs - 1. Broadbalk Wheat....................................................................137<br>2. Aerial photograph, 1954 - 3. Take-all patch on non-experimental area of Broadbalk, 1943..........138<br>4. Eyespot Lodging 1943 - 5. Straggling in thin crop, 1938..........................................139<br>6. Broadbalk Harvesting in 1890 - 7. Broadbalk. Aerial photograph, 1925.............................140<br>Take-all on Broadbalk Wheat, 1958-1967..............................................................141<br>7. INSECT PESTS ON BROADBALK........................................................................145<br>8. NEMATODE POPULATION STUDIES ON BROADBALK.........................................................161<br>9. MICROBIOLOGY OF BROADBALK SOILS..................................................................179<br>Symbiotic Nitrogen Fixation: Legume Nodule Bacteria.................................................183<br>Rhizosphere and Rhizoplane fungi....................................................................185<br>The Vesicular-arbuscular Mycorrhizal Fungi..........................................................187<br>10. WEED STUDIES ON BROADBALK ......................................................................190<br>Table of Weather Records............................................................................213<br>INDEX...............................................................................................215<br>Map of Rothamsted Farm..............................................................................221<br>