Yield Formation of White Lupin Lupinus albus L. on Heavy Gleyey Alluvial Soil
2011
Šariková, D., Plant Production Research Center, Piešťany (Slovak Republic) | Hnát, A., Plant Production Research Center, Piešťany (Slovak Republic) | Fecák, P., Plant Production Research Center, Piešťany (Slovak Republic)
Field trial with white lupin Lupinus albus L., an anti-trypsin-free French cultivar Amiga, on heavy gleyey alluvial soil of the research base in Milhostov (alt.: 101 m, avg. year temp.: 9.0 deg C, year precip.: 559 mm) in the trial years of 2006-2008 was performed. The influence of three seeding rates: 0.55, 0.65, 0.75 million viable seeds per ha (MVS) and three doses of N fertilization: 25, 50, 75 kg per ha N on seed yield and yield components such as plant number per m2, pod number per plant, seed number per plant and thousand seed weight was tested in the trial. The data of randomized complete block design trial were statistically evaluated by ANOVA and LSD method. All tested factors had highly significant (Pless or equal0.01) influence on seed yield. Seed yield was especially influenced by weather in year (97.8% influence), followed by seeding rate with the influence of 1.8% and N fertilization with the influence of 0.3% only. The highest seed yield of 2.21 t per ha was under the highest seeding rate of 0.75 MVS with the difference of 0.36 t per ha (19.5%) in comparison with the lowest seeding rate of 0.55 MVS (1.85 t per ha) and about 0.15 t per ha (10.7%) higher in comparison with the seeding rate of 0.65 MVS (2.06 t per ha). The highest influence on seed yield had the dose of 75 kg per ha N. The seed yield of 2.09 t per ha under the treatment with the highest dose of 75 kg per ha N was about 0.13 t per ha (6.6%) higher than the yield under the treatment with the lowest dose of 25 kg per ha N (1.96 t per ha). All yield components were highly significantly (Pless or equal0.01) influenced by weather in year. Plant number per m2 was also highly significantly (Pless or equal0.01) influenced by all tested factors.
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