ISHS Acta Horticulturae 119: III International Symposium on Water supply and Irrigation in the open and under Protected Cultivation
THE EFFECT OF SOIL TYPE AND IRRIGATION ON THE YIELD OF CELERIAC |
| Authors: | S. Kaniszewski, J. Rumpel |
| Abstract:
The effect of soil type and irrigation on the yield of celeriac was investigated in the years 1976–1978 in a microplot experiment. The microplots located outdoors were built as bottomless, concrete containers of 5 m2 each. Prior to the experiment the microplots were filled up with seven following soil types: black soil, chernozem, brown soil, alluvial soil, pseudo-podzols No. I and No. II and with peat soil. Each of the microplots was divided into two parts, of which one was irrigated according to tensiometer indications when the soil moisture dropped to 70 percent of the field capacity, whereas the other - was subject to natural precipitation only. The water rate per single irrigation was calculated for each soil type with the aim to restore the soil moisture to the field capacity whenever water deficiency occurred. Independently of the irrigation, highest yields of celeriac cv. Odrzanski were obtained on chernozem, alluvial and peat soil with 3 year averages of 4.44, 4.39 and 4.31 kg per m2 respectively. The brown, black and podzolic soil No. I produced intermediate yields of 3.36, 3.30 and 3.01 kg per m2 respectively whereas lowest yields of 2.16 kg per m2 were produced on podzolic soil No. II. Irrigation increased significantly the yield of celeriac. The average yield from all irrigated soils was 4.0 kg as compared to 3.1 kg per m2 of the non-irrigated ones. The effect of irrigation was related to the soil type. The brown and pseudo-podzol soil No. I gave highest yield increase of 59 and 45 percent respectively whereas these of the peat soil averaged 10 percent only. The amount of water required for irrigation during the vegetation period varied with the soil and lowest on peat soil with 267 and 73 millimeters respectively. | |
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