1Laboratory of Food Crops, Institute of Tropical Agriculture, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
2Department of Land Management, Faculty of Agriculture, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
Department of Agriculture Technology, Faculty of Agriculture, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
*Corresponding author's e-mail: kausar_sau@yahoo.com
Online published on 10 January, 2014.
Soybean (Glycine max) is one of the most important legume crops which fix atmospheric nitrogen in symbiotic association with bacteria through nodules. A study was conducted to investigate the effect of molybdenum and pre-inoculation of Rhizobium on biological nitrogen fixation and yield of soybean under drip irrigation system. A total of six treatments were used in this experiment which included control, 1 kg of Mo/ha, 1.5 kg of Mo/ha, 10 kg of Mo/ha, Rhizobium isolate UPMR020, UPMR020 + 1kg of Mo/ha, UPMR020 + 1.5 kg of Mo/ha, UPMR020 + 10 kgof Mo/ha. Application of 1kg of Mo/ha along with bacterial inoculum produced the highest (51) nodules per plant. This treatment also produced the highest nodule's weight (199 mg/plant) and plant dry weight (72 g/plant). Application of 1 kg of Mo/ha in association of UPMR020, produced significantly high yield (29.46 g/plant) compared tocontrol which produced only 9.15 g/plant, thus indicating the potential of this treatment to be used for soybean with drip irrigation system.
Glycine max, Growth, Molybdenum, Nodulation, Rhizobium, Yields
