Influence of nitrogen on growth and development of winter oilseed rape. II. Reproductive phase
1996
Islam, N. | Evans, E.J. (Bangladesh Agricultural Univ., Mymensingh (Bangladesh). Dept. of Agronomy)
Fertilizer nitrogen influences reproductive phase of winter oilseed rape by manifesting through flowering, pod development, seed development and hence, final yield. Flowering effects include time, duration and total number of open flowers produced in the crop. Although pod number is decided in advance by the inherent varietal potentiality, pod survival is mainly a combined function of both the assimilate reserve and current availability of assimilate, which in turn, is eventually governed by nitrogen supply. Late nitrogen application coinciding with the start of flowering also improves pod survival. Unlike pod component, seed development in terms of its number and weight is not substantially improved by nitrogen supply. Seed yield benefit due to increased nitrogen supply in this crop is accrued from the vigor of canopy formation (total biomass production) in proportionate to pod canopy development (assimilate partition).
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Эту запись предоставил Kasetsart University