Red clover establishment with fodder pea as companian crop. [M.Sc. thesis] | Zasnivanje crvene deteline u zdruzenoj setvi sa stocnim graskom. Magistarski rad
2008
Krstic, Dj.
The aim of this study was to determine whether fodder peas are suitable crop to use for the establishment of red clover. In particular to determine the effect of pea genotype with different morphological properties (semi leaf, and reduced leaflets) and develop of agronomic practices for using peas to establish forage legumes. These include number of pea plants i.e. seeding rate, and establishment method. The trial was carried out at the experimental field in randomized block design in three replications during two years (2004 and 2005). Perennial legume crop was red clover (cv. Kolubara). Regarding fodder pea as companion crop, two factors has been applied: fodder pea variety (Jezero-semi-leaf less and Javor-common leaf with reduced leaflets) and number of pea plants (30, 60, 90 plants of pea per square meter). Control variants were pure stand of alfalfa and red clover and their mixture with oat. At stage of technological maturity forage and protein yield (t/ha) were monitored. On average the highest forage yield has been achieved in control-2, then variants with cover crop and the lowest in pure stand of ivestigated perennial legumes. Concerning fodder pea variety on average similar forage yield has been achieved. Regarding number of plants the highest average yield was obtained with 90 pea plants. First cut has the highest portion in annual yield. As consequence of small variation in crude protein content, crude protein yield has the same trend like forage yield. Conducted photosynthetics parameters measured with red clover (leaf area index-LAI, pigments content, chlorophyll a and b, carotene, net photosynthesis and respiration) are important indicators in compinion cropping.
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