Decomposition of lupine seeds and seedlings as N fertilizer in organic vegetable production

Katroschan, Kai-Uwe; Teixeira, Gonçalo; Kahlen, Katrin; Stützel, Hartmut
August 2012
Plant & Soil;Aug2012, Vol. 357 Issue 1/2, p59
Academic Journal
Background and aims: Nitrogen mineralization of lupine seeds and seedlings to be used as flexible leguminous N source in organic vegetable production was investigated. It was hypothesized that changes in seed chemical composition during germination are associated with increased fertilizer efficiency of seed N. Methods: Net N mineralization of seed meal and seedlings varying in age was determined in pot and field experiments. The temporal mineralization pattern was quantified by fitting first-order kinetics. Results: In the pot experiment, seedling C:N ratio declined within 2 weeks from initially 8.8 to a minimum of 6.2 prior to a re-increase. Maximum net N mineralization increased strongly with decreasing C:N ratio being up to 44% higher for seedlings compared to seed meal. Time course of net N mineralization in the field showed initial peaks partly exceeding the amount of applied lupine seed N. Ignoring mineralization peaks, the relationship between maximum net N mineralization and C:N ratio was in close agreement with pot experimental data. The critical C:N ratio of the pooled data was 13. Conclusions: Nitrogen mineralization of field-sown lupine seeds can be manipulated by varying seedling growing time until incorporation. High fertilizer efficiency provided by high net N mineralization is associated with early seedling incorporation and high germination rates.


Related Articles

  • Influence of soilless growing media, pot size and sieved media on the production of Hibiscus Sabdariffa L. seedlings. Boodia, Navindra; Dursun, Gianjeet; Govinden-Soulange, Joyce // Australian Journal of Agricultural Engineering;2011, Vol. 2 Issue 5, p147 

    This study was conducted to determine the potential of raising roselle (Hibiscus sabdariffa L.) seedlings, using different types of coarse and sieved media in various pot sizes up to thirty days after germination. Roselle seeds of cultivar 'Locale' and formulated rooting media were characterized...

  • Germination and Seedling Behaviours of Seeds of Peltophorum pterocarpum D.C.Baker Ex K.Heyne Growing under Motor Vehicle Emission. Shafiq, Muhammad; Iqbal, Muhammad Zafar // Turkish Journal of Botany;2007, Vol. 31 Issue 6, p565 

    Motor vehicle emission showed toxic effects on seed germination and seedling growth of Peltophorum pterocarpum D.C.Baker ex K.Heyne. Germination and growth of P. pterocarpumseeds were significantly (P < 0.05) affected in the seeds collected from the polluted areas as compared to the less...

  • Changes in Phytohormone Status in Stems and Roots after Decapitation of Pea Seedlings. Kotova, L. M.; Kotov, A. A.; Kara, A. N. // Russian Journal of Plant Physiology;Jan/Feb2004, Vol. 51 Issue 1, p107 

    Experiments were performed on the first and second internodes and 4-cm-long apical segments of main roots of pea (Pisum sativum L.) seedlings, grown in the light and decapitated above the second node on the seventh day after seed germination. Endogenous phytohormones were measured by the...

  • Rice seed bacterization for promoting germination and seedling growth under aerobic cultivation system. Ng, L. C.; Sariah, M.; Sariam, O.; Radziah, O.; Abidin, M. A. Zainal // Australian Journal of Crop Science;2012, Vol. 6 Issue 1, p170 

    The efficacy of Corynebacterium agropyri (UPMP7), Enterobacter gergoviae (UPMP9) and Bacillus amyloliquefaciens (UPMS3) in promoting rice seed germination and seedling growth through phosphate solubilization and production of indole-3-acetic acid (IAA) was evaluated. In vitro bioassay indicated...

  • Seed Germination of Salvia sclarea. Shahi, A. K.; Gupta, Nisha; Kaul, Sushma // Journal of Tropical Medicinal Plants;Dec2010, Vol. 11 Issue 2, p113 

    Seed germination percentage (%) of Salvia sclarea L. (Labiatae) (a high value added aromatic crop) in relation to different environmental factors, hydration-dehydration effects and ambient temperature responses were studied. Effect of continuous light, diffused light and total darkness did not...

  • Effect of temperature and salt stress on seed germination and seedling growth of oil-sunflower. CHEN Yu-liang; PEI Huai-di; SHI You-tai; CHEN Bing-dong; WANG Di // Chinese Journal of Oil Crop Sciences;8/28/2011, Vol. 33 Issue 4, p374 

    Effects of temperature and concentration of salt stress were studied on germination energy, germination rate and physiological - biochemical characteristics of the seedlings of oil - sunflowers. Experiment demonstrated that: under the same temperature, with increased salt concentration,...

  • Uptake and translocation of phytochemical 2-benzoxazolinone (BOA) in radish seeds and seedlings. Chiapusio, Geneviève; Pellissier, François; Gallet, Christiane // Journal of Experimental Botany;Jul2004, Vol. 55 Issue 402, p1587 

    The molecular aspects of phytochemical interactions between plants, especially the process of phytochemical translocation by the target plant, remain challenging for those studying allelopathy. 2-Benzoxazolinone (BOA) is a natural chemical produced by rye (Secale cereale) and is known to have...

  • Prediction of Seed Germination and Seedling Growth of Four Crop Plants as Affected by Root Zone Temperature. Melaney, Mahmoud A.; Hegazy, Ahmad K.; Kabiel, Hanan F.; Maez, Mona M. // World Journal of Agricultural Sciences;Nov2007, Vol. 3 Issue 6, p714 

    The present study monitored variations of seed germination and seedling growth of four important crop plants in Egypt along root zone temperature gradient. This study aims at investigating the ability of these cultivars to germinate and grow under the projected rise in temperature associated...

  • Spatial and temporal changes in endogenous cytokinins in developing pea roots. Stirk, W. A.; Novák, O.; Václavíková, K.; Tarkowski, P.; Strnad, M.; van Staden, J. // Planta;Apr2008, Vol. 227 Issue 6, p1279 

    Germination and seedling establishment follows a distinct pattern which is partly controlled by hormones. Roots have high levels of cytokinins. By quantifying the fluctuations in endogenous cytokinins over time, further insight may be gained into the role of cytokinins during germination and...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics