Document Type : Research Paper

Authors

1 Associate Professor, Department of Horticulture, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran

2 Master, Kerman Agricultural and Natural Resources Research Center, Kerman, Iran

3 Former PhD students in Horticulture, Faculty of Agriculture. Tabriz University. East Azarbaijan. iran

Abstract

The use of chemical compounds to increase and maintain vegetative and reproductive growth in horticultural products has become common. Humic acid is an organic substance that stimulates growth due to the release of nutrients. In this study, the effect of humic acid with concentrations of 50 and 100 mg/L in two stages 30 and 45 days after flowering, were sprayed on pistachio trees of Akbari cultivar. Then, characteristics such as leaf area, chlorophyll index, branch length and diameter of the current year, percentage of hollow, split rate, percentage of deformed fruits, fruit weight, cluster weight and number of fruits per cluster, and yield were studied. The results showed that the highest leaf area, length and branch diameter were related to pistachio trees with 100 mg /L humic acid in 30 days after full flowering stage. The lowest percentage of hollow was observed in fruits treated with humic acid 50 mg /L. The highest cluster weight and number of fruits per cluster was observed in trees treated with humic acid 100 mg /L. The highest cluster weight and number of fruits per cluster was observed in trees treated with humic acid 100 mg /L. Increased yield and fruit weight in both treatments were observed with increasing humic acid concentration up to 100 mg/L. The percentage of deformed fruits in control fruits increased in both stages of foliar application compared to fruits treated with humic acid.

Keywords

Abedini, T., Moradi,P and Hani, A. (2015). 'Effect of organic fertilizer and foliar application of humic acid on some quantitative and qualitative yield of Pot marigold'. Journal of Novel Applied Sciences, 4 (10): 1100-1103.
Abedi, T., and Pakniyat, H. (2010) Antioxidant enzyme changes in response to drought stress in ten cultivars of oilseed rape (Brassica napus L.). Czech Journal of Genetics and Plant Breeding, 46(1): 27-34.
Arteca, R. N. (1996). Plant Growth Subsances: Principle and Applications. Chapman and Hall. New Yourk.
Afshari, H., PourAli, M., Sajedi, S., and HokmAbadi, H. (2015). The effect of different types of humic acid on quantitative and qualitative characteristics Pistachio AbbasAli variety. Journal of Plant Physiology Environment, 37: 83-72.
Azizi, M., and Safaei, Z. (2017). The effect of foliar application of humic acid and nano fertilizer (Pharmks®) on morphological traits, yield, essential oil content and yield of Black Cumin (Nigella sativa L.). Journal of Horticulture Science, 30(4): 671-680.
Ayas, H., and Gulser, F. (2005). The effect of sulfur and humic acid on yield components and macronutrient contents of spinach. Journal of Biological Sciences, 5(6): 801-804.
Chen, Y., and Aviad, T. (1990). Effects of humic substances on plant growth. In P. MacCarthy et al. (ed). Humic substances in substances in soil and crop science. P. 161- 186.
Castagno, L. N., Estrella, M. J., Grassano, A., and Ruiz, O. A. (2008). Biochemical and molecular characterization of phosphate solubilizing bacteria and evaluation of its efficiency promoting the growth of Lotus tenuis. Lotus Newsletter, 38(2):53- 56.
Cangi, R., Tarakcioglu, C., and Yasar, H. (2006). Eff ect of humic acid applications on yield, fruit characteristics and nutrient uptake in Ercis grape (Vitis vinifera L.) cultivar. Asian Journal of Chemistry, 18: 1493-1499.
Dursun, A., Guvenc, I., and Turan, M. 2002. Effect of different levels of humic acid on seedling growth and macro and micronutrient contents of tomato and eggplant. ACTA Agrobotanica, 56: 81-88.
Eshghi, S., and Gharazhian, M. (2015). Improving growth, yield and fruit quality of strawberry of foliar and soil drench applications of humic acid. Iran Agricultural Research, 34(1): 14–20.
El-Nemr, M. A., El-Desuki, M., El-Bassiony, A. M., and Fawzy, Z. F. (2012) Response of growth and yield of cucumber plants (Cucumis sativus L.) to different foliar applications of humic acid and bio-stimulators. Australian Journal of Basic and Applied Sciences 6: 630-637.
El-Bassiony, A.M., Fawzy, Z. F., Abd El-Baky, M. M. H., and Mahmoud, A. R. (2010). Response of snap bean plants to mineral fertilizers and humic acid application. Research Journal of Agriculture and Biological Sciences. 6(2): 169-175.
Ferguson, L., Beede, R. H., Freeman, M. W., Haviland, D. R., Holtz, B. A., and Kallsen, C. E.
(2005). Pistachio Production Manual, 4th ed. Fruit and Nut Research and Information Center,
University of California. P: 480.
Giasuddin, A. B. M., Kanel, S., and Choi, H. (2007). Adsorption of humic acid onto nanoscale zerovalent iron and its effect on arsenic removal. Journal Environment Science Technology, 41(6): 2022-2027.
Harper, S. M., Kerven, G. L., Edwards, D. G., and Ostatek-Boczynski, Z. (2000) Characterisation of fulvic and humic acids from leaves of Eucalyptus camal-dulensis and from decomposed hay. Soil Biology and Biochemistry, 32: 1331-1336.
Jahan, M., Sohrabi, R., Doayee, F., and Amiri, M. B. (2013). Effect of super absorbent water application in soil and humic acid foliar application on some agroecological characteristics of bean phaseolus vulgaris L. in mashhad. Journal of Agroecology, 3(2):71-90.
Khaled, H., and Fawy, H. A. (2011). Effect of different levels of humic acids on the nutrient content, plant growth and soil properties under conditions of salinity. Soil and Water Research, 6: 21-29.
Karakurt, Y., Unlu, H., Unlu, H., and Padem, H. (2009) The influence of foliar and soil fertilization of humic acid on yield and quality of pepper. Acta Agriculturae Scandinavica Section B–Soil and Plant Science, 59: 233-237.
Liu, C. and Cooper, R.J. (2000) Humic Substances Influence Creeping Bentgrass Growth. Golf Course Management, 49-53.
Moraditochaee, M. (2012). Effects of humic acid foliar spraying and nitrogen fertilizer management on yield of peanut (Arachis hypogaea L.) in Iran. ARPN Journal of Agricultural and Biological Science, 7(4): 289-293.
Nardi, S., Pizzeghello, D., Muscolo, A. and Vianello, A. (2002). Physiological effects of humic substances on higher plants. Soil Biology Biochemistry, 34: 1527–1536. 
Ozdamar ullu, H., Unlu, H., Karakurt, Y. and Padem H. 2011.Changes in fruit yield and quality in response to foliar and soil humic acid application in cucumber. Scientific Research and Essays, 6(13): 2800-2803.
Panuccio, M. R., Muscolo, A., and Nardi, S. (2001). Effect of humic substances on nitrogen uptake and assimilation in two species of pinus. Journal Plant Nutrition, 24:693–704.
Panahi, B., Esmaeilpour, A., Farbod, F., Moazzenpour Kermani, M., and Farivar Mahin, H. (2001). Pistachio guideline. Agriculture Education Publication, Karaj, Iran, pp: 147.
Pinton, R., Cesco, S., Lacolettig, G., Astolfi, S. and Varanini, Z. (1999). Modulation of NO3-uptake by water–extractable humic substances: involvement of root plasma membrane H+ATPse. Plant Soil, 215: 155-161.
Pizzeghello, D., Nicolini,  G., and Nardi, S. (2001). Hormone-like activity of humic substances in Fagus sylvaticae forests. New Phytologist, 51:647-657.
Rafeii, S. and Pakkish, Z. (2014). Improvement of Vegetative and Reproductive Growth of ‘Camarosa’ Strawberry: Role of Humic Acid, Zn, and B. Agriculturae Conspectus Scientificus, 79: 239-244.
Samavat, S. and Malakuti, M. (2005). Important use of organic acid (humic and fulvic) for increase quantity and quality of agriculture productions. Water and Soil Researche, 463: 1-13
Singer, J. W., Kohler, K. A., Liebman, M., Richard, T. L., Cambardella, C. A., and Buhler, D. D. (2004). Tillage and compost affect yield of corn, soybean, and wheat and soil fertility. Agriculture Journal, 96: 531-53.
Shahbazi, S.H., Fateh, E., and Aynehband, A. (2015). Evaluation of the effect of humic acid and vermicompost on yield and yield components of three wheat cultivars in tropical regions. Journal of Plant Production, 38(2): 99-110.
Tourfi, F. and Shokuhfar, A. (2019). Effect of humic acid on yield, yield components and physiological parameters of wheat in deficit irrigation conditions. Journal of Plant Production Science, 9:121-132.
Taghizadeh-Alisaraei, A., Alizadeh Assar, H., Ghobadian, B., and Motevali, A. 2017. Potential of biofuel production from pistachio waste in Iran. Renewable and Sustainable Energy Reviews, 72: 510–522.
Zhang, X. Z., and E. H. Ervin. (2004). Cytokinin-containing seaweed and humic acid extracts associated with creeping bentgrass leaf cytokinins and drought resistance. Crop Science, 5:1737-17.
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: 182-186.