Improvement of chemical fertilizers efficiency and the possibility of reduction their application by biofertilizers in the production of maize (Zea mays cv. SC704)

جوانمرد, عبدالله and امانی ماچیانی, مصطفی Improvement of chemical fertilizers efficiency and the possibility of reduction their application by biofertilizers in the production of maize (Zea mays cv. SC704). In: 2nd International and 6th National Iranian Congress on Organic vs. Conventional Agriculture, August 2019, Ardabil, Iran.

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Abstract

In order to evaluation of the possibility of reduction of chemical fertilizer application via their replacement with biofertilizers, a field experiment based on randomized complete block design (RCBD) with 12 treatment and four replication was established at the Research Farm of university of Maragheh during 2017.The first factor was included chemical fertilizer (N1: control, without fertilizer, N2: application of 150 kgha-1 of nitrogen fertilizer and N3: 75 kgha-1 of nitrogen fertilizer+ 50 kgha-1 super phosphate triple) and the second factor was included biofertilizer (F1: control, F2: inoculation with Nitroxin, F3: inoculation with Barvare-2 and F4: inoculation with Nitroxin and Barvare-2). Results revealed that application of chemical and biological fertilizers lead to significant increasing in chlorophyll index, number of kernal per ear, 1000-seed weight, biological and grain yield. In this research, co-application of Nitroxin and phosphate Barvare-2 was more effective than their single application on maize yield and yield components. Also application of 50% nitrogen+ 50% phosphor fertilizers with biofertilizers supplied ideal situation for maize growth. In the above mentioned treatment (50% nitrogen+50% super phosphate triple+ biofertilizers), environmental hazardous could be decreased in order to balanced application of chemical fertilizers. Our finding showed that the biological fertilizers accompanied with chemical fertilizer could increase maize yield and its yield components by enhancement of nutrients uptake.

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