In this article:
Trails were conducted on the effects of soil fertilisation on grape vines. Various factors were measured to define yield differences, to determine the relationship of vegetative growth to yield, and for use in forecasting yields for trade purposes.
The factors measured, and technique developed to measure them, are described.
Nitrogen is the only fertiliser element to give consistent increases in yield. Phosphates and potash have had no effect on vine-yield. High number of cane has been more satisfactory than the lowest level of pruning.
An explanation is attempted for the small changes in vine yield experienced under even the most favourable treatments.
Manurial Trials with Irrigated Sultana Vines in the Murray Valley, Australia
1942, Empire Journal of Experimental Agriculture, vol 10, pages 77 – 88
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