P. K. Karthikeyan R. Ranjani D. Gokul K. Swetha Reddy R Bhuvaneswari Ajish Muraleedharan


Potassium is involved in a diverse range of processes within plants that are needed for their growth, yield and better quality. The polyhalite as a hydrated evaporate mineral that can be used directly as a source of potassic fertilizer. However, research on polyhalite's appropriateness and effectiveness, the present investigation aimed to evaluate the effect of polyhalite on growth, yield attributes, and yield of blackgram variety ADT 5 at Chinnakandiankuppam village, Vriddhachalam, Cuddalore district, Tamil Nadu, during 2021. The experiment was laid out in randomized block design consisting of ten treatments viz., T1 (absolute control), T2 (-K), T3 (12.5 kg K2O ha-1 as muriate of potash (MOP)), T4 (25 kg K2O ha-1as MOP), T5 (37.5 kg K2O ha-1 as MOP), T6 (50 kg K2O ha-1 as MOP), T7 (12.5 kg K2O ha-1 as polyhalite),  T8 (25 kg K2O ha-1 as polyhalite), T9 (37.5 kg K2O ha-1 as polyhalite), T10 (50 kg K2O ha-1 as polyhalite). The experiment revealed that the application of 37.5 kg K2O ha-1 as polyhalite (T9) significantly (5%) enhanced the growth attributes (plant height (38.7 cm), number of branches plant-1 (12.97), leaf area index (2.13), number of nodules plant-1 (18.76) and dry matter production (1972 hg ha-1), yield attributes (pod length (8.21 cm), number of pods plant-1 (20.05), number of seeds pod-1 (7.14) and test weight (3.53 g)) and grain yield (1439 kg ha-1), haulm yield (1876 kg ha-1) of blackgram. Thus the study would be helpful to farmers for yield maximization of blackgram through polyhalite as potassic fertilizer.     




Blackgram, Growth, Muriate of potash, Polyhalite, Yield

Chandrasekhar, C.N. & Bangarusamy, U. (2003). Maximizing the yield of mung bean by foliar application of growth regulating chemicals and nutrients. Madras Agric. J., 90(1-3), 142-145.
Chesnin, L. & Yien, C.R. (1951). Turbidimetric determination of available sulphates. Soil Sci. Soc. Amer. Proc., 15, 149-151.
DES, Ministry of Agriculture & FW (DAC & FW), Govt. of India. (2021). https://agricoop.nic.in.
Garnett, S. (2021). Potential of Polyhalite Fertilizers to Enhance Potato Yield and Quality in the United Kingdom. Int. Potash Inst. (e-Ifc), (63), 18-27.
Jackson, M.L. (1973) Soil Chemical Analysis. Prentice Hall of India Pvt. Ltd., New Delhi, 498.
Kemp, S.J., Smith, F.W., Wagner, D., Mounteney, I., Bell, C.P., Milne, C.J., Gowing, C.J.B. & Pottas, T.L. (2016). An improved approach to characterize potash-bearing evaporite deposits, evidenced in North Yorkshire, United Kingdom. Econ. Geol., 111(3), 719-742. https://doi.org/10.2113/econgeo.111.3.719
Kumar, D., Singh, R.P., Somasundaram, J., Simaiya, V. & Jamra, S. (2018). Effect of foliar application of nutrients on growth and development of blackgram (Vigna mungo (L.) Hepper) under rainfed Vertisols of Central India. Int. J. Chem. Stud., 6(1), 609-613.
Navitha, D., Mahendran, P.P., Suresh, S., Beaulah, A. & Kannan, P. (2019). Growth and yield of tomato as influenced by potassium and secondary nutrients. Int. J. Chem. Stud., 7(5), 683-688.
Nieves-Cordones, M., Shiblawi, A., Razzaq, F. & Sentenac, H. (2016). Roles and transport of sodium and potassium in plants. The alkali metal ions: Their role for life, 16, 291-324. https://doi.org/10.1007/978-3-319-21756-7_9
Pankaj, S.C. & Dewangan, P.K. (2017). Weed management in black gram (Vigna mungo L.) and residual effect of herbicides on succeeding mustard (Brassica juncea L.) crop. Intl. J. Curr. Microbiol. Appl. Sci., 6(11), 865-881. https://doi.org/10.20546/ijcmas.2017.611.101
Piper, C.S. 1966. Soil and Plant Analysis. Hans Publishers, Bombay.
Rosa, R.P., Pittelkow, F.K. & Vale, F. (2020). Evaluation of potassium and sulfur fertilizers for soybean in Brazil. Int. Potash Inst. (e-ifc), (59), 3-9.
Stanford, D. & English. L. (1949). Use of flame photometer in rapid soil tests of K and Ca. Agron. J., 4, 446-447.
Subbiah, B.V. & Asija, L.C. (1956). A rapid method of estimation of available nitrogen in soils. Curr. Sci., 25, 258-260.
Tien, T.M., Trang, T.T.T., Ha, P.T.N. & Thu, T.T.M. (2021). Effects of polyhalite application on yield and quality of cabbage grown on degraded soils in Northern Vietnam. Int. Potash Inst. e-ifc, (63), 3-10.
Tiwari, D.D., Pandey, S.B. & Dubey, M.K. (2012). Effect of potassium application on yield and quality characteristics of pigeon pea (Cajanus cajan) and mustard (Brassica juncea L. Czern) crops in central plain zone of Uttar Pradesh. Int. Potash Inst.., e-ifj, 31, 16-20.
Walkley, A. & Black, C.A. (1934). An examination of Deglgreff method for determining soil organic matter and proposed modification of chromic and titration method. Soil Sci., 37, 29-38.
Watanabe, I. & Olsen, S.R. (1965). Test of ascorbic acid methods for determining phosphorus in water and NaHCO3 extracts from soil. Soil Sci. Soc. Am. Proc., 29, 677-678.
Yermiyahu, U., Zipori, I., Faingold, I., Yusopov, L., Faust, N. & Bar-Tal, A. (2017). Polyhalite as a multi nutrient fertilizer–potassium, magnesium, calcium and sulfate. Israel J. Plant Sci., 64(3-4), 145-157.
Yi, L., Ming, L., Zhi, Y., Xin-ping, C., Li, G. & Dun-yi, L. (2021). Enrichment of Compound NPK Fertilizer with Polyhalite Enhances Pepper (Capsicum annuum) Yield and Quality on Poor Yellow Soils in Southwest China. Int. Potash Inst., (e-ifc), (65), 12-23.
Zhao, N., Guo, H., Suo, J., Lei, Y., Li, G., Imas, P. & Magen. (2020). Impact of alternative polyhalite fertilizers on 'Xu Xiang' Kiwifruit yield and quality in Shaanxi Province, China. Int. Potash Inst., (e-ifc), (62),13-2.
Research Articles

How to Cite

Evaluation of polyhalite on growth, yield attributes and yield of blackgram (Vigna mungo L.). (2023). Journal of Applied and Natural Science, 15(1), 29-33. https://doi.org/10.31018/jans.v15i1.4105