Abstract
The simplification of the plant cultures range and the yields in the last 10-15 years brings into the actuality the role of crop rotation andof fertilization on the yield level and stability for wheat and maize even on the soils with a high natural fertility. The results of the researchesperformed between the years 2006 – 2009 on a cambic low gleyed chernozem from the Banat Plain showed that the wheat cultivated inmonoculture gives productions with 59-81% lower than that cultivated in crop rotation with other plants during 2-4 years. In maize, the yieldobtained in monoculture is situated behind that obtained in crop rotation with 11-21%. The most favorable crop rotations for wheat wererape-wheat in a 4 years rotation and soybean-wheat in simple rotation of 2 years. In maize, the most favorable was the 2 years rotation(wheat-maize). The mineral fertilization was very efficient both in wheat (11-36%) and maize (9-31%). The organic fertilization with manurewas very efficient for maize, the yields being superior with a mean value by 34% for a 60 t/ha dose and with 16% for 30t/ha. The fertilizationcompensates the negative effect expressed by the monocultivation only in a small measure
Highlights
IntroductionIn the last [10-15] years it can be observed a reduction of the plant number that is cultivated in all countries of Europe and in an accentuated way in Romania (Borza and Coste, 2002; Borza et el., 2006; Marinca et al, 2009).The main cause is represented by the express demand for cereals (wheat and maize) required by the animal breeding complexes in relation with the continuing decreasing animal effectives from the household system (Borza and Coste, 2002; Marinca et al, 2009).In the condition of a decreasing number of the plant cultures within the vegetal farms to only [3,4] plants, their rotation was simplified to an interval by [2,3,4] years and the monocultivation is performed on at least 25-30%surfaces for wheat and 30-40% for maize
The research results, as well as those found in production showed that even when the fertilization is increased, the monoculture is under crop rotation with up to 30-50% from yield in wheat and in a small measure in maize (Borlan et al, 1999; Borza et el., 2006)
On the soils with low natural fertility and in the years with less favorable climatic conditions for wheat crop, the yield results obtained in monocultivation are totally unsatisfactory
Summary
In the last [10-15] years it can be observed a reduction of the plant number that is cultivated in all countries of Europe and in an accentuated way in Romania (Borza and Coste, 2002; Borza et el., 2006; Marinca et al, 2009).The main cause is represented by the express demand for cereals (wheat and maize) required by the animal breeding complexes in relation with the continuing decreasing animal effectives from the household system (Borza and Coste, 2002; Marinca et al, 2009).In the condition of a decreasing number of the plant cultures within the vegetal farms to only [3,4] plants, their rotation was simplified to an interval by [2,3,4] years and the monocultivation is performed on at least 25-30%surfaces for wheat and 30-40% for maize. In the condition of a decreasing number of the plant cultures within the vegetal farms to only [3,4] plants, their rotation was simplified to an interval by [2,3,4] years and the monocultivation is performed on at least 25-30%. The research results, as well as those found in production showed that even when the fertilization is increased, the monoculture is under crop rotation with up to 30-50% from yield in wheat and in a small measure in maize (Borlan et al, 1999; Borza et el., 2006). On the soils with low natural fertility and in the years with less favorable climatic conditions for wheat crop, the yield results obtained in monocultivation are totally unsatisfactory
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
