Naslov
Influence of fertilization and liming on maize, wheat and soybean status

Autori
Kovačević, Vlado ; Kadar, Imre

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, pregledni

Izvornik
16 World Congress of Soil Science : Summaries, Vol. 1 / Pedro, G. ; Ruellan, A. - Montpellier : ISSS, International Soil Science Society, 1998, 246-246

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; Soybean

Sažetak
Eastern Croatia is granary of country. This province produces about 50% of its maize and nearly 60% of total wheat production. It is estimated that only about 30% of land had normal nutritional status, while in remaining 70% is needed improvement of chemical properties. For example, potassium deficiency and excess of plant available Ca and Mg (mg/kg of soil in NH4Acetate-EDTA extract: 116 K, 48000 Ca and 1404 Mg) are main reasons for appearance of K deficiency in maize and soybean plants, which were grown on drained gleysol. Normalization of plant and soil status was made by enormous application of KCl. For example, as affected by potash fertilization maize grain yields were increased (t/ha, 3-year averages) as follows: 1.93 (control), 5.39 (835 kg K/ha), 6.64 (1580 kg K/ha) and 7.64 t/ha (2220 kg K /ha), respectively. Analogous data for soybeans were as follows: 1.29, 2.17, 2.45 and 2.61 t/ha, respectively. In general, liming of acid soils is a usual recommendation for their improvement. By our testing on two soils, maize, soybean and barley grain yields increased as affected by liming, for 10% or less than 10%, while wheat yields remained similar to control. However, under conditions of the third experiment (pH in KCl = 4.24), lime application (10, 20 and 30 t calcite/ha) resulted by wheat yields decrease (4-year averages) as follows: 7.15 t/ha (control), 6.98 t/ha (10 t), 6.81 t/ha (20 t) and 6.70 t/ha (32 t), respectively. Also, maize yield were decreased due liming as follows: 4.54, 4.35, 4.27 and 4.10 t/ha, respectively. The lower grain yields of maize in comparison with wheat is additional specifity of this soil. However this phenomenon is impossible to explain by the performed soil test (NH4Acetate-EDTA extraction of P, K, Ca, Mg, Na, Zn, Mn, Pb, Cd, Al and Sr).

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA