The effect of humic acid, seaweed and mycorrhiza application rates on yield, fiber quality and digestibility of alfalfa in Hamedan
Subject Areas : Nutrition
1 -
2 - Department of Agronomy, Borujerd Branch, Islamic Azad University, Boroujerd, Iran
Keywords: humic acid, fibers, seaweed, alfalfa,
Abstract :
In order to investigate the effect of humic acid, mycorrhiza and seaweed application rates on the yield and quality of Hamedan alfalfa forage, an experiment was conducted in Kabudarahang County, Hamedan Province. The experiment was conducted as a factorial in a randomized complete block design with three replications. The factors studied included mycorrhiza treatment at two levels of application and non-application, humic acid at three levels of control, 2.5 liters per hectare (the dose recommended by the manufacturer) and 5 liters per hectare, and seaweed extract at three levels of control, 1 kilogram per hectare (the dose recommended by the manufacturer) and 1.5 kilograms per hectare. The results of this study showed that the factors studied had different effects on the measured traits. The highest alfalfa plant height was obtained with the application of 5 liters per hectare of humic acid (74.38 cm) and the application of 1.5 kg per hectare of seaweed with 20 grams per square meter of mycorrhizal fungi (86.34 cm). The highest fresh forage yield with an average of 27.72 tons per hectare was obtained with the application of 5 liters per hectare of humic acid. The highest dry forage yield with an average of 11.93 tons per hectare was obtained with the application of 1.5 kg per hectare of seaweed with 20 grams per square meter of mycorrhizal fungi. The highest fiber percentage with an average of 20.55 percent was obtained with the treatment of no mycorrhizal fungi and no seaweed application. Also, the highest fiber yield with an average of 1930.5 kg per hectare was obtained with the application of mycorrhizal fungi and 1 kg per hectare of seaweed. The highest crude fiber yield with an average of 28.38 percent was obtained with the treatment of no mycorrhizal fungi and seaweed application
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