Naslov
Effect of twenty years of tobacco production in monoculture and crop rotation upon the yield and NO3-N leaching on semigley soil in Croatia

Autori
Turšić, Ivan ; Husnjak, Stjepan ; Žalac, Suzana

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

Izvornik
9th Alps-Adria Scientific Workshop, proceedings of papers / - Špičák, 2010, 385-388

Skup
9th Alps-Adria Scientific Workshop

Mjesto i datum
Železná Ruda, Češka Republika, 2010

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Semigley soil; Monoculture; Crop rotation; Tobacco; NO3- N; leaching

Sažetak
Investigations started in 1987 and were carried out on semigley soil (sandy loam) characteristics of the area where flue-cured tobacco is grown in Northern Croatia. Several types of crop rotation were tested: tobacco monoculture (unfertilized tobacco, fertilized tobacco), two-crop (winter wheat, tobacco), three-crop (winter wheat, tobacco, maize), four-crop (winter wheat, tobacco, maize, soybean). Tobacco is the key crop in these investigations while winter wheat was the proceding crops in trials. This investigations will have a long-term character and are carried out on the experimental field of the Tobacco institute Zagreb. Tobacco growing in monoculture reduced the yield from 2.63 t/ha in the first year (1987) to 1.63 t/ha in the 20. year (2007). A significantly lower yield and quality were obtained after the fourth year of tobacco monoculture compared to tobacco growing in crop rotation. The highest content in plough and sub-plough layers was recorded at lysimeter where the crop rotation involved maize and wheat, which was succeded by tobacco. The lowest nitrate content (7.8 kg NO3- N/ha) was leached in unifertilized tobacco monoculture which served as check treatment. The highest content of leached nitrogen (53.6 kg/ha NO3- N) was recorded after the harvest of maize, which was fertilized with 180 kg nitrogen, wheat fertilized with 160 kg of nitrogen, was shown.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA