ارزﻳﺎﺑﻲ ﻋﻤﻠﻜﺮد در زراﻋﺖ ﻫﻤﺮاه ﺧﺮﺑﺰه (Cucumis melo L) و ﭼﻐﻨﺪر ﻋﻠﻮﻓﻪای (Beta vulgaris subsp. vulgaris L)

Abstract
In order to evaluation of yield in companion planting of melon (Cucumis melo L.) and fodder beet (Beta vulgaris subsp. vulgaris L.), an experiment was conducted based on randomized complete block design with 3 replications during 2012 and 2013 in farming company of Nilabad, Torbat-e Jam. Treatments include pure cultivation of melon, pure cultivation of fodder beet, melon cultivation with fodder beet in opposite site so that the distances of fodder beet shrubs were different (15, 20 and 30 centimeter on row). In this research, traits include yield of melon, yield of leaf and root in fodder beet and total yield of fodder beet were measured. The results showed that the use of fodder beet cultivation in combination with cultivated melon does not have any negative effect on yield of melon. Also, with the exception of pure cultivation of melon treatment (in which there was no fodder beet plant) there was no significant difference between treatments on yield of fodder beet. The highest amount of land equivalent ratio (LER) in cultures treated with melon with beet forage (2.21) with a spacing of 15 cm. Therefore, companion planting of these plants to better use of resources and increase of yield is recommended for this area.