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Effect of Rhizobium Inoculation, Phosphorus and Molybdenum in Yield, Yield Attributes and Nodulation of Cowpea under Mulched and Un-Mulched Field Condition
American Journal of Agriculture and Forestry
Volume 7, Issue 3, May 2019, Pages: 111-118
Received: May 16, 2019; Accepted: Jun. 14, 2019; Published: Jun. 26, 2019
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Roshan Dhakal, Faculty of Agriculture, Agriculture and Forestry University, Chitwan, Nepal
Hom Prasad Sitaula, Faculty of Agriculture, Agriculture and Forestry University, Chitwan, Nepal
Bibek Acharya, Faculty of Agriculture, Agriculture and Forestry University, Chitwan, Nepal
Sagar Bhusal, Faculty of Agriculture, Agriculture and Forestry University, Chitwan, Nepal
Suman Dhakal, Department of Agronomy, Agriculture and Forestry University, Chitwan, Nepal
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Cowpea is an important source of nutrition being popular in Nepal. In order to study its effect on nodulation, yield and yield attributes, a research was conducted in the sandy loam soil of the horticulture farm of Agriculture and Forestry University in 2018. The experiment was laid out in factorial 2×5 RCBD which consists of mulched and un-mulched condition as 1st factor and rhizobium inoculation (R) at 1gm/ 16.66 gm seed, phosphorus (P) at recommended dose of 120kg/ha, use of R plus P (RP), RP plus Molybdenum (RPMo) at 2 gm per kg seed and control with no such application as 2nd factor. So altogether there are ten treatments with three replications. Regarding 1st factor, mulched treatment was found significantly superior than un-mulched treatment in case of all yield attributes like canopy, stem diameter and plant height. Yield and no of nodules per plant was found 312.61 gm and 121.63 respectively in mulched treatment which was highly significant (P < 0.001) than un-mulched. In case of 2nd factor, plant height at 60 days after sowing was found significantly superior in all applications than control. Yield and no of nodules per plant was found 312.53gm (P < 0.01) and 129.33 (P < 0.05) respectively in RPMo treatment which was statistically significant and at par with P, RP and R treatment respectively and lowest in control. The rise in number of nodules due to the different treatment applications had the high positive correlation (P < 0.01) with yield and yield attributes. There was no any significant interaction between the two factors. Use of mulching and RPMo treatment was found to be the most suitable combination for cowpea in sandy loam soil.
Rhizobium, Molybdenum, Cowpea, Mulched, Un-mulched, Phosphorus
To cite this article
Roshan Dhakal, Hom Prasad Sitaula, Bibek Acharya, Sagar Bhusal, Suman Dhakal, Effect of Rhizobium Inoculation, Phosphorus and Molybdenum in Yield, Yield Attributes and Nodulation of Cowpea under Mulched and Un-Mulched Field Condition, American Journal of Agriculture and Forestry. Vol. 7, No. 3, 2019, pp. 111-118. doi: 10.11648/j.ajaf.20190703.14
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MoAD, (2005). Statistical Information on Nepalese Agriculture. Ministry of Agriculture Development. Singh Durbar, Kathmandu, Nepal. Retreived from
NARC. 2002. Annual report 2001/2002. National grain legumes research program, Rampur, Chitwan, Nepal.
Yadav, C. R. 2000. Production Technology of Rajmas. Nepal Agriculture Research Council. Grain Legume Research Program, Rampur, Chitwan.
Singh, A. K., Bhatt, B. P., Sundaram, P. K., Kumar, S., Bahrati, R. C., Chandra, N., &Rai, M. (2012). Study of site specific nutrients management of cowpea seed production and their effect on soil nutrient status. J AgricSci, 4 (10), 191-198.
Chowdhury, M. U., Ullah, M. H., Afzal, M. A., Khanam, D., &Nabi, S. M. (1998). Growth, nodulation and yield of cowpea as affected by Rhizobium inoculation and micronutrients in the hilly region. Bangladesh Journal of Agricultural Research, 23 (2), 195-203.
TRUNG, B. C., & YOSHIDA, S. (1982). Nutrient uptake and its distribution patterns in mungbean. Japanese Journal of Tropical Agriculture, 26 (3), 121-129.
Sharma, R. A., Upadhyay, M. S., &Tomar, R. S. (1985). Water use efficiency of some rainfed crops on a vertisol as influenced by soil and straw mulching (No. REP-3730. CIMMYT).
Simpson, L. A., &Gumbs, F. A. (1986). A system of crop and soil management for the wet season production of food crops on a heavy clay soil in Guyana: 1. Effect of mulching and tillage on soil properties and crop yields. Tropical Agriculture (Trinidad and Tobago).
Singh, A. K., Tripathi, P. N., & Singh, R. O. O. M. (2007). Effect of Rhizobium inoculation, nitrogen and phosphorus levels on growth, yield and quality of kharif cowpea [Vignaunguiculata (L.) Walp.]. CROP RESEARCH-HISAR-, 33 (1/3), 71.
Tisdale, S. L., W. L. Nelson and J. D. Beaton. (1985). Soil Fertility and Fertilizer. 4 thedn., Macmillan Publishing Company, New York, p. l 12.
Othman, W. M. W. (1993). Allantoin and amino acid composition in xylem exudates of nodulated and nitrate-dependent cowpea plants. Pertanika Journal of Tropical Agricultural Science (Malaysia).
Jain, P. C., Amar, C., Naidu, A. K., Tiwari, J. P., & Chandra, A. (1993). Influence of nitrogen and NAA on growth and yield parameters of cowpea [Vignaunguiculata (L.) Walp.]. Jawaharlal Nehru KrishiVishwavidyalaya Res. J, 27, 49-62.
Kamara, C. S. (1981). Effects of planting date and mulching on cowpea in Sierra Leone. Experimental Agriculture, 17 (1), 25-31.
Rahman, M. M., Rahman, M. M., Paul, A. K., Officer, P. S., Division, S. S., & Officer, S. (2008). Effect of phosphorus, molybdenum and, 3 (October), 26–33.
Zaman, A. K. M. M., Alam, M. S., Roy, B., & Beg, A. H. (1996). Effect of B and Mo application on mungbean. Bangladesh J. Agril. Res, 21 (1), 118-124.
Pandey, I. B., Pandey, R. K. and Kumar R. (2015). Integrated nutrient management for enhancing productivity and profitability of long duration pigeon-pea (Cajanuscajan) under rainfed condition. Indian J. Agron., 60 (3): 436-442.
Muhammad, D., Gurmani, A. H., & Khan, M. (2004). Effect of phosphorus and Rhizobium inoculation on the yield andyield components of mungbean under the rainfed conditions of DI Khan [Pakistan]. Sarhad Journal of Agriculture (Pakistan).
Malik, M. A., Saleem, M. F., Ali, A., &Mahmood, I. (2003). Effect of nitrogen and phosphorus application on growth yield and quality of mungbean (Vignaradiata L.). Pakistan Journal of Agricultural Sciences, 40, 133-136.
Landge, S. K., S. U. Kakade, P. D. Thakare., A. P. Karunakar and D. J. Jiotode. (2002). Response of soybean to nitrogen and phosphorus. Pakistan J. Crop Sci. 3 (3): 653-655.
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