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The Effect of Nitrogen Fertilization and Population Density of the Field Bean ( Vicia faba L. minor ) of Indeterminate and Determinate Growth Habit on the Symbiosis with Root Nodule Bacteria and on the Seed Yield
Author(s) -
Filek W.,
Kościelniak J.,
Grzesiak S.
Publication year - 1997
Publication title -
journal of agronomy and crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.095
H-Index - 74
eISSN - 1439-037X
pISSN - 0931-2250
DOI - 10.1111/j.1439-037x.1997.tb00513.x
Subject(s) - indeterminate growth , nitrogenase , agronomy , nitrogen fixation , biology , population , dry matter , human fertilization , root nodule , nitrogen , horticulture , cultivar , chemistry , demography , organic chemistry , sociology , ideotype
Field beans of indeterminate (cv. Nadwiślański) and determinate (cv. Tibo) growth habits were grown on field plots with a density of 20, 40 and 80 plants m −2 at two levels of nitrogen fertilization: low (20 kg N ha −1 ) and very high (150 kg N ha −1 ). At the phase of intense pod growth the number and the dry matter weight of root nodules as well as their nitrogenase activity and some features of the plants growth were determined, and in the period of ripeness the components of seed yield were established. It was found that increased density of sowing as well as the high level of nitrogen fertilization inhibited the growth and development of root nodules and limited their nitrogenase activity in both cultivars. Plants of both varieties were characterized by a similar potential of forming the root nodules, however, in plants of the cv. Tibo the nitrogenase activity of nodules was much lower than in the cv. Nadwiślański. Increased population density of the plants has in both varieties given increased seed yield when calculated per m 2 of the soil, compensating in excess the depression of the seed yield from one plant. Such compensation did not occur in the case of the depression of nitrogen fixation under intense nitrogen fertilization.