Investigations on yield in the cereals: V. A Study of four wheat fields: the limiting effect of population-density on yield and an analytical comparison of yields
- 1 April 1928
- journal article
- research article
- Published by Cambridge University Press (CUP) in The Journal of Agricultural Science
- Vol. 18 (2), 317-345
- https://doi.org/10.1017/s0021859600009126
Abstract
In any field of corn the population-density or number of plants per unit length of row is very fluctuating. Accidental circumstances may result in considerable stretches being empty or thinly populated. Quite apart from this, the population of successive short lengths is sharply and characteristically inconstant. Where plants are few tillering is profuse and there is thus a tendency towards constancy in yield per unit length of row. Specific ascertainment has, in earlier experiments, suggested that the tendency is by no means marked. In consequence fluctuation of population-density in the sense here used, reduces yield in typical field crop substantially below the potential maximum appropriate to the soil and other circumstances. From short lengths of row, low in plant-population, yields are low. In aggregate these sparsely populated lengths are a feature of considerable economic importance.Keywords
This publication has 2 references indexed in Scilit:
- Investigations on yield in the cereals: IV. The action of the seed drillThe Journal of Agricultural Science, 1928
- A census of an acre of corn (by sampling)The Journal of Agricultural Science, 1926