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Research Article

Phosphorus and Potassium Requirements of Mungbean (Vigna radiata)

F.C. Oad, A. Naqi Shah , G.H. Jamro and S.H. Ghaloo
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A field experiment was conducted to assess the growth and yield performance of mungbean (Vigna radiata) varieties under various phosphorus and potash levels at Student’s Experimental Farm, Sindh Agriculture University, Tandojam. Four mungbean varieties viz. AEM/25, AEM-6/20, NM-20/21 and AEM-10/2/87 were tested. Most of the agronomic traits of mungbean varieties were significantly influenced by phosphorus and potassium fertilizers except pod number, seed weight per plant and seed index were non-significant. However, 100-100 PK kg ha‾1 showed an increase in the yield of the crop. Thus, it is recommended that the mungbean crop should be fertilized with phosphorus and potassium at the level of 100-100 PK kg ha‾1 for achieving satisfactory seed yield.

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  How to cite this article:

F.C. Oad, A. Naqi Shah , G.H. Jamro and S.H. Ghaloo , 2003. Phosphorus and Potassium Requirements of Mungbean (Vigna radiata). Journal of Applied Sciences, 3: 428-431.

DOI: 10.3923/jas.2003.428.431



Mungbean is sub-tropical, short duration and drought resistant crop. It is an important pulse crop having high nutritional value and low cost protein food. It also restores the fertility of soil by fixing atmospheric nitrogen through root nodules. The farmers are taking low yield due to many constrains. Among those the fertilizer requirements mostly phosphorus and potassium have vital importance which are not properly supplied to the crop. Patel and Patel (1991) reported that grain yield was increased with increasing phosphorus rates from 0- 50 kg ha-1. Thakuria and Saharia (1990) reported that yields of grams were increased from 518 to 720 kg ha-1 by applying 20 kg P2O5 ha-1. Nirmal et al. (1991) noted that yield of mungbean increased with increasing phosphorus rates applied to the preceding crop. Rajkhowa et al. (1992) observed that seed yield of gram increased significantly when 20 kg P2O5 ha-1 was incorporated. Looking the previous research in the other countries, the field research was set to evaluate the effects of P and K levels on the yield and yield components of mungbean varieties.

Materials and Methods

The field experiment was conducted at Students Experimental Farm, Sindh Agriculture University, Tandojam, Pakistan. Four mungbean varieties (AEM-25/20, AEM-6/20, NM-20/21 and AEM-10/2/87 were tested under three phosphorus and potassium levels (50-50, 100-100 and 0-0 kg NP ha-1). These fertilizers were applied at the time of sowing. Proper irrigation and cultural practices were carried out according to the experimental requirements of the crop.

Ten plants from each treatment were selected at random for recording observations and crop was harvested for final yield. The data collected was statistically analyzed by LSD test following Gomez and Gomez (1984).

Results and Discussion

The mean performance of mungbean varieties and their statistical analysis as affected by phosphorus and potassium levels is presented in Table 1. Data revealed that most of the agronomic traits have been significantly affected by fertilizer levels except number of pods, seed weight per plant and seed index, whereas, varietal differences were non-significant.

Table 1: Agronomic traits of mungbean as affected by phosphorus and potassium fertilization
Plant height (cm)
Image for - Phosphorus and Potassium Requirements of Mungbean (Vigna radiata)
Image for - Phosphorus and Potassium Requirements of Mungbean (Vigna radiata)

Further, data demonstrated that variety AEM-6/20 performed better results followed by AEM-25/20 under both the fertilizer levels as compared to control (untreated) in most of the crop parameters. However, data obviously indicated that P and K level of 50-50 kg ha-1 increased the seed yield over control and higher fertilizer level 100-100 PK kg ha-1 respectively. Most of the results are in accordance with the findings of Singh et al. (1991), Sarkar and Mukharjee (1991), Nirma et al. (1991), Rajkhowa et al. (1992), Jakhro et al. (1993) and Asif (1973), all researchers reported that the application of 50-82 kg P2O5 ha-1 increased the root length, stem, dry weight of leaves, seed index and number of pods per plant of mungbean. It can be concluded that phosphorus and potassium fertilizers should be applied at 50-50 kg ha-1 for satisfactory and economical seed yield of mungbean.

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7:  Sarkar, A. and A.K. Mukharjee, 1991. Effect of phosphorus on yield and nodulation of green gram (Phaseolus radiatus), black gram (P. mung) and rice bean (Vigna umbellate). Field Crop Abst., 46: 51-54.

8:  Singh, A.K., R.K. Chaudhry and R.P.R. Sharma, 1991. Effect of inoculation and fertilizer levels on yield, nutrient uptake and economics of summer pulses. J. Potassium Res., 9: 176-178.

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