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Effect of Water Regimes and Moisture Stress at Different Growth Stages on Nodule Dynamics, Nitrogenase Activity and Nitrogen Fixation in Soybean (Glycine max (L.) Merrill) *

Effect of Water Regimes and Moisture Stress at Different Growth Stages on Nodule Dynamics,... The effect of water regimes and soil moisture stress on total nodule number, effective nodule number, nodule dry weight, nitrogenase activity and nitrogen fixation in soybean was studied. The effective nodule number, nodule weight, nitrogenase activity and nitrogen fixation increased due to increase in water regimes from 0.4 to 0.6 Cumulative Pan Evaporation (CPE). The stress during either flowering or pod filling reduced the effective nodule number, nodule weight, nitrogenase activity and nitrogen fixation. The amount of nitrogen fixed was maximum with 0.8 CPE (50.09 kg ha‐1 season‐1) followed by 0.6 CPE (42.08 kg ha‐1 season‐1) and 0.4 CPE (33.04 kg ha‐1 season‐1). The amount of nitrogen fixed was reduced by 17.71 % and 26.39 % due to stress during flowering and pod filling respectively compared to normal irrigation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Agronomy and Crop Science Wiley

Effect of Water Regimes and Moisture Stress at Different Growth Stages on Nodule Dynamics, Nitrogenase Activity and Nitrogen Fixation in Soybean (Glycine max (L.) Merrill) *

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References (9)

Publisher
Wiley
Copyright
Copyright © 1995 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0931-2250
eISSN
1439-037X
DOI
10.1111/j.1439-037X.1995.tb00201.x
Publisher site
See Article on Publisher Site

Abstract

The effect of water regimes and soil moisture stress on total nodule number, effective nodule number, nodule dry weight, nitrogenase activity and nitrogen fixation in soybean was studied. The effective nodule number, nodule weight, nitrogenase activity and nitrogen fixation increased due to increase in water regimes from 0.4 to 0.6 Cumulative Pan Evaporation (CPE). The stress during either flowering or pod filling reduced the effective nodule number, nodule weight, nitrogenase activity and nitrogen fixation. The amount of nitrogen fixed was maximum with 0.8 CPE (50.09 kg ha‐1 season‐1) followed by 0.6 CPE (42.08 kg ha‐1 season‐1) and 0.4 CPE (33.04 kg ha‐1 season‐1). The amount of nitrogen fixed was reduced by 17.71 % and 26.39 % due to stress during flowering and pod filling respectively compared to normal irrigation.

Journal

Journal of Agronomy and Crop ScienceWiley

Published: Mar 1, 1995

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