Ankštinių augalų inokuliavimo rhizobium štamais ir startinio azoto reikšmė simbiotinio azoto fiksacijai bei dirvožemio agrocheminėms savybėms / | The effect of legume inoculation with rhizobium strains and starter nitrogen on symbiotic nitrogen fixation and soil agrochemical properties.
2006
Lapinskas, Edmundas,
The present paper provides summarised data from pot and field trials designed to estimate the effects of the combination of different strains of Rhizobium and starter nitrogen ( N30) on different symbiotic systems (red clover, alfalfa, goat’s rue and field beans) in a dystri-endohypogleyic albeluvisol (pHKCl 4.7-5.3) and Eutri-endohypogleyic Albeluvisol (pHKCl5.5-6.3), and Albi-endohypogleyic Luvisol (pHKCl 6.5-7.2). Inoculation, depending on the efficiency of Rhizobium strain, had a positive effect on all legume crops’ dry matter yield, crude protein mass, nodule formation and symbiotic nitrogen fixation. Moreover, inoculated red clover and alfalfa tended to improve some of the agrochemical soil properties. Different symbiotic systems gave a diverse response to starter nitrogen. Mineral nitrogen gave a positive effect on lucerne and inoculated goat’s rue yield, but did not have any effect on red clover and field beans. Starter nitrogen did not have any impact on goat’s rue and field beans and inhibited red clover (Rhizobium štamas R99) and alfalfa nitrogen fixation. Biological nitrogen fixation declined in proportion to the increase in red clover and alfalfa mineral nitrogen nutrition.
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