Naslov
Response of sugar beet to potassium fertilization on high K-fixing soil

Autori
Kristek, Andrija ; Rastija, Manda ; Kovačević, Vlado ; Liović, Ivica

Izvornik
Rostlinna vyroba (0370-663X) 42 (1996), 11; 523-528

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
šećerna repa; gnojidba kalijem; tlo visoke fiksacije K
(sugar beet; potassium fertilization; high K-fixing soil)

Sažetak
Sugar beet growing area in Croatia is relatively small (28 568 ha or near 2% of arable land capacity: state of 1991). It is mainly situated in the eastern part of the Pannonian region because of better soil characteristics. However, some soil types are less favourable for crop growing because of nutritional stress (for example, highly K-fixing gleysols). For this reason, enormous K rates even up to 3 250 kg K2O/ha were applied in the field trial. In general, sugar beet was shown as tolerant crop concerning soil stress induced by K-deficiency and Mg-oversupply because favourable yields were found in the control treatment (2-year mean: 55.40 t/ha). The application of high K rates increased root yield for about 30% and also improved its quality, especially of sugar yield. Response of maize and soybean to K-fertilization was considerably higher because their grain yields were especially low under conditions of ordinary recommended fertilization.

Izvorni jezik
Engleski

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