The shadow of the world's future, or The earth's population possibilities & the consequences of the present rate of increase of the earth's inhabitants

Bibliographic data

Monograph

Identifikator:: 1775636852

URN:: urn:nbn:de:zbw-retromon-164018

Document type:: Monograph

Author:: Knibbs, George Handley http://d-nb.info/gnd/1045010944

Title:: The shadow of the world's future, or The earth's population possibilities & the consequences of the present rate of increase of the earth's inhabitants

Place of publication:: London

Publisher:: Ernest Benn Limited

Year of publication:: (1928)

Scope:: 131 Seiten

Digitisation:: 2021

Collection:: Economics Books

Usage license:: Get license information via the feedback formular.

Chapter

Document type:: Monograph

Structure type:: Chapter

Title:: Chapter IV. The world's cereal and food-corps and its mineral needs

Collection:: Economics Books

40 THE SHADOW OF THE WORLD’S FUTURE enormously altered, as some persons have somewhat speculatively supposed, but it has recently been shown that greatly increased yields are at least temporarily attainable with cereals by transplanting. The in- creased yields are due to the greater root-development thus obtained. The use of carbon dioxide has also led to higher yields. We see, therefore, that improved agricultural technique may yet yield surprising results. Whether on a large scale such results are readily obtainable or not, and whether it is possible to increase yields three- and four-fold permanently or not, it is perhaps too early to say. In any case these results, while they relieve the outlook for the immediate future, do not warrant any disregard for the outlook resulting from population-increase. It may here be noted that China, which has at any rate till recently produced probably the highest yields, has for many centuries used human waste. Experts have stated that before long this will be a feature of all agriculture: world-economics will, it is alleged, make it necessary. There is reason to believe that, in human affairs, waste of material and of effort will continually diminish. One is reminded also, in this connection, that the extent of the possible use of fertilisers is a factor of great moment. In South Australia, for example, wheat-growing was unprofitable until superphosphates were used; and as soon as they were used the economic position was completely altered for the better. Before passing on, however, to consider the light which the use of manures throws on the world’s possibilities of population, some consideration may be given to the magnitude of the production of artificial fertilisers. Statistics are collected regarding these by the Inter- national Institute of Agriculture at Rome. For 1920 the production in millions of metric tons—2204-6 Ibs. —was as follows sem

Access restriction

Copyright

fullscreen: The shadow of the world's future, or The earth's population possibilities & the consequences of the present rate of increase of the earth's inhabitants

Monograph

Chapter

Table of contents

Download

Monograph

Chapter

This page

Image fragment

Citation links

Citation recommendation