The effect of symbiotic nitrogen on grain yield of soybeans under field conditions in Peshawar valley. | [Sarhad Journal of Agriculture • 1986]

Author(s):

1. Zar Qureshi: Pakistan Agriculture Research Council (PARC), Islamabad, Pakistan

2. Akhtar Beg: Pakistan Agriculture Research Council (PARC), Islamabad, Pakistan

3. M. Siddiq: NWFP Agricultural Research Institute, Peshawar, Pakistan

Abstract:

Higher and economical yield of soybeans [Glycine max (L) Merr] are mainly dependent on effective nodulation of roots. Nodulation cannot be accomplished unless soybeans are infected with efficient and viable strains of nodule forming bacteria (Rhizobium japonicum). Attempts in the past were made to commercialize the production of soybeans in Peshawar Valley but the crop could not get any momentum due to poor yields. The poor yields, besides other factors were mainly due to poor inoculation in the soybean because soils of Peshawar Valley are devoid of modulating bacteria. Therefore, inoculation studies with Rhizobium japonicum were undertaken at three different locations in Peshawar Valley to investigate the effect of inoculation on soybean yields. The results revealed that the yields of uninoculated soybeans were significantly lower than inoculated ones at all locations. The effect of inoculation on bean yield was statistically similar to fertilizer doze of 200 kg/ha nitrogen and was 50% more than the control treatment in the last experiment. Height and number of pods were statistically greater in inoculated treatments than the uninoculated treatment.

Page(s): 363-368

DOI: DOI not available

Published: Journal: Sarhad Journal of Agriculture, Volume: 2, Issue: 2, Year: 1986

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