Naslov
Influence of potassium fertilization and liming on maize, wheat and soybeans

Autori
Kovačević, Vlado ; Kadar, Imre

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Essential role of potassium in diverse cropping sysstems (Proceedings of Workshop C) / Johnston, A. E. - Basel : International Potash Institute (IPI), 1999, 131-136

Skup
16th World Congress of Soil Science

Mjesto i datum
Montpellier, Francuska, 20.08.1998. - 26.08.1998

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
potassium; liming; maize; wheat; soybeans; fertilization

Sažetak
Eastern Croatia province occupies about 20% territory of Croatia and 30% of its arable land capacity. However, this province produces about 50% of its maize, nearly 60% of total wheat and nearly 90% of total soybean production. Some nutritional problems (appearance of either P, K or Zn deficiency) have been found recently, especially in maize and soybean plants. Potassium deficiency and excess of plant available Ca and Mg are the main reasons for the appearance of K deficiency in maize and soybean plants. Normalization of plant and soil status were made by enormous application of KCl. As affected by application of 2200 kg K/ha, grain yield of corn was increased from 1.93 t/ha (control) to 7.64 t/ha and soybean from 1.29 t/ha (control) to 2.61 t/ha. In general, liming of acid soils is a usual recommendation for their improvement. Based on our experiences with two field trials, maize, soybean and barley grain yields increased due to liming by 10% or less than 10%, while wheat showed no response to lime application.However, under conditions of the soil B , lime application resulted by maize and wheat yields decrease, but this phenomenon is impossible to explain by the performed soil test .

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA