Determination of energy indices in producing wheat and canola in Dashte Namdan Agro-industry (Eghlid region, Fars)
Subject Areas : Journal of Plant Ecophysiology
1 - مربی دانشگاه آزاد اسلامی واحد اقلید
2 - استادیار مرکز تحقیقات کشاورزی و منابع طبیعی فارس
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Abstract :
In this study, wheat (Triticum aestivum L.) production in 118 hectares and rapeseed (Brassica napus L.) production in 26.8 ha of Dashte Namdan Agro-industry farm was evaluated from the energy indices point of view in Eghlid region. This farm was fully mechanized and the required data were collected using person to person interview method and filling out the questionnaires. Equivalent energy inputs and outputs for both products were calculated in this study, and then corresponding energy ratio, energy productivity, and net energy gain were determined for each crop. Inputs were fertilizers, seeds, pesticides, fuel consumption, equipments, labors, and irrigation while grain yield and straw were considered as outputs. Energy ratio obtained for wheat and canola grain were 2.29 and 1.76, respectively while corresponding values related to both grain and straw (total biological outputs) were 6.23 and 3.44, respectively. Energy productiviities were also determined 0.49 and 0.21 kg/MJ for wheat and canola, respectively. Net energy gain for wheat and canola were 41065 and 20914 MJ/ha, respectively. Fertilizers were the highest energy consumer inputs for both crops and fuel and irrigation took the second and third places. Energy consumption related to seed was higher in wheat compared to canola. Since wheat production had the higher energy indices compared to canola in this research, wheat production should be preferred to canola in this farm from the energy balance point of view.