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2008, vol. 17, iss. 2, pp. 113-117
Weed flora in spring barley under different fertilization treatments and forecrops
aDepartment of Plant Physiology, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture in Nitra, Nitra, Slovak Republic
bDepartment of Agrosystems and Climatology, Mendel University of Agriculture and Forestry, Brno, Czech Republic
cDean`s Office of Faculty of Agrobiology and Food Resources, Slovak University of Agriculture in Nitra, Nitra, Slovak Republic
dDepartment of Sustainable Agriculture and Herbology, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture in Nitra, Nitra, Slovak Republic
Keywords: forecrop; mineral fertilisation; spring barley; weediness
Abstract
Field trials were conducted during 1999-2002 at the experimental station of the Slovak University of Agriculture in Nitra. Fertilisation treatments were as follows: treatment 1 - zero dose of mineral N-P-K fertilisation; treatment 2 - mineral N-P-K fertilisation according to crop needs (equable nutrient balance in soil, e.g. = equivalent of 5 t ha-1 grain yield of spring barley); treatment 3 - high dose of mineral N-P-K fertilisation (positive nutrient balance in soil, e. g. = equivalent of 8 t ha-1 grain yield). Conventional mouldboard ploughing to the depth of 0.25 m was used. Weed infestation was evaluated before post-emergent application of herbicides (in May) and before harvest of crop (in June). Influences of mineral fertilisation and forecrops on weediness in spring barley stands were statistically significant (α = 0.006 for mineral fertilisation, α = 0.002 for forecrops). The most harmful weed in spring barley stands was Cirsium arvense.
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article language: English
document type: Original Scientific Paper
published in SCIndeks: 01/12/2008