Reference Report for IND20470228
| Title: | Effects of tillage, cultivar, and planting date on percentage of soybean leaves with symptoms of sudden death syndrome |
| Authors: | Wrather, J.A., Kendig, S.R., Anand, S.C., Niblack, T.L., Smith, G.S. |
| Source: | Plant Dis. 1995, 79(6):560-562 |
| Abstract: | During 1991-94, a field experiment was conducted in Missouri, USA, where sudden death syndrome (SDS) of soyabeans (caused by Fusarium solani) had been previously observed. The effects of tillage, planting date and soyabean cultivar on the percentage of leaves with symptoms of SDS at R6 growth stage was investigated. Soyabean cultivars Essex, Forrest, Hartwig and Rhodes were each planted in 75-cm-wide rows in disc-till, ridge-till and no-till plots. The planting dates were mid-May, mid-Jun. and late Jun. to early Jul. each year. Symptoms of SDS developed in 1991, 1992 and 1994, but not in 1993. There were significant year √ó cultivar (P = 0.0001) and tillage √ó planting date √ó cultivar (P = 0.05) interactions for the percentage of leaves with symptoms of SDS. Essex, Forrest and Rhodes had a greater percentage of leaves with symptoms of SDS than did Hartwig in 1991 and 1994; differences among cultivars did not occur in 1992. The percentage of Essex, Forrest and Rhodes leaves with symptoms of SDS was greater for no-till than for either disc-till or ridge-till in mid-May plantings. There were no significant correlations between the percentage of leaves with SDS and yield. |
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