Mikroelementų efektyvumas sėjomainoje / | The efficacy of trace elements in the crop rotation.
2006
Kregždys, Žilvinas, | Daugėlienė, Nijolė,
Field experiments were carried out at the Vėžaičiai Branch of LIA during the period 1999-2003. The soil of the experimental site is loamy Albeluvisol (AB). The experiments were carried out to study the effects of trace elements boron, zinc, copper and molybdenum and their application method on the productivity of crops in the crop rotation, yield quality and soil properties. Experimental evidence suggests that boron sprayed on crops increased winter wheat yield by 0.29 t ha-1, compared with the check treatment. All trace elements and application methods, except for boron application into the soil and onto plants, significantly increased nitrogen content in wheat grain. Copper applied annually into the soil and onto plants as well as sprayed onto plants increased phosphorus content in grain by 0.06-0.09 percentage units, compared with the check treatment. Dry matter yield of perennial grasses in the first year of use increased by 0.61 t ha-1 through zinc applied annually into the soil and onto plants. Molybdenum, copper and zinc, applied annually into the soil and on plants increased the content of these trace elements in the dry matter yield of perennial grasses. Trace elements did not have any tangible effect on barley grain yield. All methods of boron application increased its content in barley grain. The highest (0.30 mg kg-1) efficacy was determined having applied boron into the soil.
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