Lodging and Yield of Dry Peas (Pisum sativum L.) as Influenced by Various Mixing Ratios of a Conventional and a Semi-Leafless Cultivar |
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| Authors: | J Schouls J G Langelaan |
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| Institution: | Department of Agronomy, Wageningen Agricultural University, Haarweg 333, 6709 RZ Wageningen, The Netherlands. |
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| Abstract: | Lodging is a serious problem in dry pea production in North-West Europe. Therefore, lodging and its effects on yields were studied in five field-experiments with two cultivars with two different canopy structures, both as single crop and in various mixing weight ratios. In 1985, mechanically simulated lodging decreased yield by about 45% in both the conventional type cv. Rondo and the semi-leafless type cv. Solara , by reducing both the number of seeds and seed weight. Natural lodging brought about the same effect in 'Rondo' but in 'Solara' , however, effects were less because of delayed lodging. In 1986, 1987 and 1988, mixtures of the conventional cv. Finale and Solara showed delayed lodging compared to 'Finale' single and tended to produce higher yields than the single crops of both cultivars. Polynomial analysis of the yields of all mixing experiments showed maximum yields at 53% 'Solara' (quadratic analysis) or 67% 'Solara' (cubic analysis). Thus, mixing high yielding, lodging sensitive conventional cultivars with lower yielding but lodging resistant semi-leafless cultivars may improve yield in dry peas. |
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| Keywords: | Pisum sativum L lodging semi-leafless mixtures seed yields |
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