Evaluation of advantages and forage quality of grass pea mixtures with barley, oat and triticale

Dehghanian, Hasan (2020) Evaluation of advantages and forage quality of grass pea mixtures with barley, oat and triticale. Doctoral thesis, University of Mohaghegh Ardabili.

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Abstract

Research Aim: In order to achieve sufficient and high quality forage yield, the present study aims to: 1) evaluate the quantity and quality of forage produced in mixed cropping of barley, oats and triticale in different cropping patterns, 2) productivity evaluation And efficiency of fallow cereal mixing systems; and 3) Determining the best mixing pattern in terms of quantity and quality of forage produced. Research method: In order to evaluate of quantity and quality of forage production and determine the best cropping pattern of mixed grass pea with some winter cereals including barley, oats and triticale, a field study was conducted in a randomized complete block design with 13 treatments and three replications at the Research Farm of Tabriz University of Agriculture in two growing seasons (2015-2016). Treatments included sole culture of grass pea, barley, oat and triticale, as well as grass pea mixture with each cereal in three culture patterns (25: 100, 50: 100 and 50:80). Findings: The results showed that forage quality and yield such as total dry matter yield, crude protein yield, and cell wall, cell wall without hemicellulose, total digestible nutrient and dry matter intake were affected by mixed culture. The blends of barley with oats and oats with oats with 80% grain and 50% pea had the highest quantity and quality of forage. These culture patterns also showed the highest LER (1.34 and 1.40), respectively, compared to other mixed cultures. Therefore, based on the results of this study, we can introduce winter blend and fine grain cereal with 80% grain plus 50% green bloom as one of the most sustainable and high quality forage production systems. Conclusion: In general, it can be concluded that forage yield increased with increasing planting ratio in mixed crops. Evaluation of the advantages of the blend systems studied in this study based on LER showed that except for 100% triticale + 50% blend treatment in all other blend treatments, the ratio of land equivalence was greater than one, indicating superiority of blend culture over pure cultivation. Be it. Also, the highest LER was observed in 80% mixed barley with 50% barley (1.34) and 80% oats with 50% barley (1.40).

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