The effect of Barvar-2 phosphate biofertilizer and mycorrhizal fungi along with humic acid on agronomic characteristics of sunflower (Helianthus annus L.)

Subject Areas : crop production

علی نصرالله زاده اصل ¹

1 - گروه کشاورزی-دانشکده کشاورزی-دانشگاه ازاد اسلامی خوی

Received: 2020-08-31 Accepted : 2021-03-05 Published : 2021-06-06

Keywords: number of seed per head, biofertilizer, mycorrhizal fungi, 1000-seed weight.,

Abstract :

For the aim of sustainable agriculture and reduce the use of chemical fertilizers, the experiment carried out by using of Barvar-2 phosphate biofertilizer and mycorrhizal fungi and humic acid on agronomic characteristics and seed yield of sunflower. This experiment was conducted in Chaypareh city in 2018. The experiments carried out using factorial design based on Randomized Complete Block design with three replications and two factors. The factors were as follows: The first factor humic acid in two levels (control and humic acid 10 kg.ha-1) and Second factor phosphateh fertilizer in six levels (control, Barvar-2 phosphate biofertilizer, mycorrhizal fungi, Barvar-2 phosphate biofertilizer + mycorrhizal fungi, Barvar-2 phosphate biofertilizer + mycorrhizal fungi + 100 kg.ha-1 super phosphate triple and 200 kg.ha-1 super phosphate triple). The results showed that the effect of humic acid was significant on plant height, head diameter, Number of seed per head, 100-seed weight, seed yield and harvest index were significant. The maximum grain yield (2439.98 kg. ha-1) was obtained from experiment treatment of humic acid. The effect of phosphateh fertilizer on plant height, steam diameter, head diameter, Number of seed per head, 100-seed weight and seed yield were significant. The maximum seed yield 2789.6 kg.ha-1 was obtained from experimental treatments Barvar-2 phosphate biofertilizer + mycorrhizal fungi + 100 kg.ha-1 super phosphate triple. According to the results of this experiment, using Barvar-2 phosphate biofertilizer + mycorrhizal fungi could reduce 50% super phosphate triple

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