The effect of biological and chemical fertilizers on yield and essential oil of Peppermint (Mentha piperita L.) by meta-analysis method
Subject Areas : Crop Production ResearchAlireza Shahmohammadi 1 , Abdolmajid Mahdavi Damghani 2 , Mahnaz Salatin 3 , Haniyeh Rashid Rostami 4
1 - Ph. D Student in Agroecology, Ecological Agriculture Department, Environmental Sciences Research Institute, Shahid Beheshti University, Tehran, Iran.
2 - Professor of Ecological Agriculture Department, Environmental Sciences Research Institute, Shahid Beheshti University, Tehran, Iran.
3 - Research Department Manager of Agriculture and Animal Husbandry Holding of Etka Organization, Tehran, Iran.
4 - Ph. D student of Agrometeorology, Faculty of Agriculture, Ferdowsi University, Mashhad, Iran.
Keywords: Begg and Mazumdar correlation, Biofertilizer, Hedges effect size, Meta-analysis, Peppermint ,
Abstract :
Dealing with the challenges of food shortages caused by population growth led to the development of agricultural systems dependent on chemical fertilizers, pesticides and insecticides. On the other hand, alternative production systems have emerged in order to reduce the risks of intensive production systems and increase efficiency by applying ecological methods and using biological and organic fertilizers. The purpose of this meta-analysis was to investigate the effects of using biological and chemical fertilizers on the yield of dry weight and essential oil of peppermint and to compare the effects of fertilizer groups with each other. Using the information of articles published in the past 20 years and based on the ROSES protocol, a total of 34 studies were examined. Therefore, Hedges effect size, diffusion error, Begg and Mazumdar's correlation and Kendall’s tau coefficient were calculated using meta-analysis software. The results showed that biofertilizers had a positive effect on increasing the yield of dry weight and peppermint essential oil. The amount of 8 liters of nitroxin per hectare with an effect size equal to (g=1.412) and (g=1.200) with 95% certainty of using biofertilizers increased the dry matter and essential oil of peppermint. The size of the effect of using chemical fertilizers was also more effective than biological fertilizers on the yield of dry weight and essential oil. The results of Begg and Mazumdar's correlation test showed that the effects of chemical fertilizers and biofertilizers on peppermint were homogeneous. The Classic fail-safe N test also showed that the accuracy and precision of the conducted studies is high. Therefore, it is possible to produce peppermint by relying on biological fertilizers in the development of organic agriculture or by combining biological and chemical fertilizers in emerging approaches such as healthy agriculture.
