Fruit quality attributes of tomato affected by application of different levels of potassium humate and micronutrients (Zn, B and Fe)

Paper Details

Research Paper 01/02/2020
Views (298) Download (12)

Fruit quality attributes of tomato affected by application of different levels of potassium humate and micronutrients (Zn, B and Fe)

Ashfaq Ahmad Rahi, Saima Nazar, Zahid Hassan Tarar, Saleha Ahmed Ali, Khurrum Shehzad Baig, Muhammad Aslam, Muhammad Suleman.
Int. J. Biosci.16( 2), 332-341, February 2020.
Certificate: IJB 2020 [Generate Certificate]


Deficiency of micronutrients is a major hurdle to achieve the optimum quality of crop plants fruits in agriculture. These micronutrients are equally important as that of macronutrients. In addition, better availability of micronutrients to the crops played an imperative role in improvement of reproductive growth of plants. Low organic content of arid and semiarid regions is a major factor that significantly decrease the micronutrients phytoavailability and fruit quality. Tomato is one of important crops which is widely consumed as a salad and cooking of food. Similarly, use of humate as an organic soil conditioned is also getting attention of farming community due to its potential benefits. That’s why keeping in mind the importance of organic matter and micronutrients, current experiment was conducted to examine the combine effect of potassium humate and micronutrients variable levels on fruit quality of tomato during summer and winter seasons. It is hypothesized that co-application of potassium and micronutrients application would be efficacious in improvement of tomato fruit quality. Results confirmed that 100% application rate of micronutrients (Zn, B and Fe) along with 15 kg ha-1 potassium humate was significantly best regarding an improvement in total soluble solids, lycopene, ascorbic acid and total acidity during summer and winter seasons. It is concluded that micronutrients should be used along with potassium humate to improve the quality of tomato fruits.


Ahmad RI, Naseer AB, Zahir ZA, Arshad MU, Sultan TA, Ullah MA. 2006. Integrated use of recycled organic waste and chemical fertilizers for improving maize yield. International Journal of Agriculture and Biology 8, 840-843.

Alva AK, Obreza TA. 1998. By-product iron-humate increases tree growth and fruit production of orange and grapefruit. HortScience 33(1), 71-74.

Analytical Software. 2005. Statistix version 8.1. User’s Manual. Analytical Software,Tallahassee, Florida, USA.

AOAC. 1995. Official Methods of Analysis, 18th Ed. Association of Official Analytical Chemists, Washington, USA.

Chen Y, De Nobili M, Aviad T. 2004. Stimulatory effects of humic substances on plant growth. In Magdoff, F. and R.R. Weil (eds.). Soil Organic Matter in Sustainable Agriculture. CRC Press, London.

Cummings GA, Xie HS. 1995. Effect of soil pH nitrogen source on the nutrient status in peach: II. Micronutrients. Journal of Plant Nutrition 18, 553-562.

Davies BE. 1997. Deficiencies and toxicities of trace elements and micronutrients in tropical soils: limitations of knowledge and future research needs. Environmental Toxicology and Chemistry 16, 75-83.

Dordas C, Apostolides GE, Goundra O. 2007. Boron application affects seed yield and seed quality of sugar beets. Journal of Agricultural Science 145, 377-384.

Fortun C, Fortun A, Almendros G. 1989. The effect of organic materials and their humified fractions on the formation and stabilization of soil aggregates. Science of the Total Environment 81/82, 561-568.

Imtiaz M, Rashid A, Khan P, Memon MY, Aslam M. 2010. The role of micronutrients in crop production and human health. Pakistan Journal of Botany 42, 2565-2578.

Knicker H, Fründ R, Lüdemann HD. 1993. The chemical nature of organic matter in native soil organic matter. Naturewissenschaften 80, 219-221.

Magalhaes JR, Solwaand CE, Monnerat PH. 1980. Levels and methods of boron application in tomato. Pesquisa Agropecuria Brasilesia 10(2), 153-157.

Marschner H. 2002. Mineral Nutrition of Higher Plants. Academic Press, San Diego, USA, pp: 379-396.

Miwa K, Takano J, Fujiwara T. 2008. Molecular mechanism of boron transport in plants and its modification for plant growth improvement. Tanpakushitsu kakusan koso, Protein, Nucleic acid, Enzyme 53, 1173-1179.

Morris DR, Loeppert RH, Moore TJ. 1990. Indigenous soil factors influencing iron chlorosis of soybean in calcareous soils. Soil Science Society of America Journal 54, 1329-1336.

Osendarp SJ, West CE, Black RE, Maternal Zinc Supplementation Study Group. 2003. The need for maternal zinc supplementation in developing countries: an unresolved issue. Journal of Nutrition 133, 817-827.

Piccolo A, Mbagwu JS. 1990. Effects of different organic waste amendments on soil microaggregates stability and molecular sizes of humic substances. Plant Soil 123, 27-37.

Rakkiyappan P, Thangavelu S. 2000. Effect of iron on ratoon crops of six sugarcane varieties grown in iron deficient soils. Proceedings of the International Conference on Management of Natural Resources for Sustainable Agricultural Production in the 21st Century. Feb. 14-18, 2000, New Delhi, India, pp. 266-268.

Ranganna S. 1986. Handbook of Analysis and Quality Control for Fruit and Vegetable Products. Tata McGraw-Hill Publishing Company, New Delhi, India.

Shankar AH, Prasad AS.1998. Zinc and immune function: The biological basis of altered resistance to infection. American Journal of Clinical Nutrition 68, 447-463.

De Souza EC, Coutinho EL, Natale W, Barbosa JC. 1998.  Response of corn to phosphorus and zinc fertilization. Pesquisa Agropecuria Brasilesia 33, 1031-1036.

Takano J. 2006. The Arabidopsis major intrinsic protein is essential for efficient boron uptake and plant development under boron limitation. Plant Cell 18, 1498-1509.

Takano J, Miwa K, Fujiwara T. 2008. Boron transport mechanisms: collaboration of channels and transporters. Trends in Plant Science 13, 450-457.

Takano J, Kobayashi M, Noda Y, Fujiwara T. 2007. Saccharomyces cerevisiae Bor1p is a boron exporter and a key determinant of boron tolerance. FEMS Microbiology Letter 267, 230-235.

Wallace S. 2006. The structure, function and regulation of the nodulin 26-like intrinsic protein family of plant aquaglyceroporins. Biochemica etBiophysta (BBA)-Biomembranes 1758, 1165-1175.

Wersha RL, Aiken GR. 1985. Molecular size and weight measurements of humic substances. In: Aiken GR, McKnight DM, Wershaw RL, MacCarthy P. (eds.), Humic Substances in Soil, Sediment, and Water: Geochemistry, Isolation and Characterization. Wiley-Interscience, New York, pp: 477-492.

Quaglia GB, Gennaro L. 2003. Enzymes: uses in food processing. In: Encyclopedia of food science and nutrition. B. Caballaro, L. Trugo and P.M. Finglas (Eds.). Academic Press, San Diego, CA, pp: 2125-2139.

Yildirim E. 2007. Foliar and soil fertilization of humic acid affect productivity and quality of tomato. Acta Agriculturae Scandinavica Section B-Soil and Plant Science 57(2), 182-186.