Graduate Thesis Or Dissertation
 

Effects of planting bush beans (Phaseolus vulgaris L.) in single or double rows

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  • A comparison was made between double rows 15 cm apart on 76 cm centers and single rows 76 cm apart of 'Oregon 91G' bush green beans at the same planting densities in three experiments in 1986 and 1987. There was a significant increase in yields of pods from double rows of 9-14 percent compared to single rows in two experiments. From the third experiment with low planting densities double rows gave an increase in pod yield of 3 percent, which was not significant. Individual plant dry weights and Leaf Area Index (LAI) were usually higher for plants in double rows compared to plants in single rows. Yield responses from increasing plant density were not consistent but highest yields were produced at densities of 35-50 plants/m². Plant dry weights decreased as density increased, while effects of density on LAI were not consistent. Planting of bush beans in double rows compared to single rows should result in no additional cost inputs except development of planters. Feasibility of adoption of this system of planting is discussed.
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