EVALUATION OF SEED TREATMENTS ON STAND ESTABLISHMENT AND YIELD OF SWITCHGRASS, 2008

The importance of fungicide seed treatments on cotton was examined using a series of standardized fungicide trials from 1993 to 2004. Fungicide seed treatments increased stands over those from seed not treated with fungicides in 119 of 211 trials. Metalaxyl increased stands compared to nontreated seed in 40 of 119 trials having significant fungicide responses, demonstrating the importance of Pythium spp. on stand establishment. Similarly, PCNB seed treatment increased stands compared to nontreated seed for 44 of 119 trials with a significant response, indicating the importance of Rhizoctonia solani in stand losses. Benefits from the use of newer seed treatment chemistries, azoxystrobin and triazoles, were demonstrated by comparison with a historic standard seed treatment, carboxin + PCNB + metalaxyl. Little to no stand improvement was found when minimal soil temperatures averaged 25°C the first 3 days after planting. Stand losses due to seedling pathogens increased dramatically as minimal soil temperatures decreased to 12°C and rainfall increased. The importance of Pythium increased dramatically as minimal soil temperature decreased and rainfall increased, while the importance of R. solani was not affected greatly by planting environment. These multi-year data support the widespread use of seed treatment fungicides for the control of the seedling disease complex on cotton.

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Role of Seedling Diseases and the Efficacy of Fungicide Seed Treatments in Stand Establishment of Cotton

Grow: Plant Health Exchange ◽

10.1094/grow-cot-02-15-061 ◽

2015 ◽

Keyword(s):

Seed Treatments ◽

Stand Establishment ◽

Seedling Diseases

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Factors affecting vegetable stand establishment

Scientia Agricola ◽

10.1590/s0103-90161998000500021 ◽

1998 ◽

Vol 55 (spe) ◽

pp. 116-120 ◽

Cited By ~ 7

Author(s):

E. M. Grassbaugh ◽

M. A. Bennett

Keyword(s):

Crop Production ◽

Cultural Practices ◽

Limiting Factors ◽

Environmental Constraints ◽

Vegetable Crops ◽

Vegetable Crop ◽

Seed Treatments ◽

Factors Affecting ◽

Stand Establishment ◽

Tillage Practices

Several factors can influence stand establishment in vegetable crop production. Environmental conditions such as soil physical characteristics, temperature and moisture, various cultural practices, and diseases may all be limiting factors in establishing maximum stands and achieving the highest possible yields. Measures taken to increase stands include soil improvements, implementing cultural practices, and use of chemical and biological seed treatments. Combining seed treatments and cultural/tillage practices to minimize environmental constraints can lead to maximum stands and yields in the production of high quality vegetable crops.

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Onion Seed Quality

HortScience ◽

10.21273/hortsci.40.4.1141a ◽

2005 ◽

Vol 40 (4) ◽

pp. 1141A-1141

Author(s):

Alan G. Taylor

Keyword(s):

New York ◽

Seed Quality ◽

Maximum Yield ◽

Seed Storage ◽

Field Studies ◽

Yield Potential ◽

Seed Treatments ◽

Stand Establishment ◽

Percent Germination ◽

Initial Seed

High seed quality is required to obtain optimal plant stands and to achieve maximum yield potential. Onion seeds are commonly coated and treated with an insecticide and fungicide to control early season insects and diseases. The seed treatments may cause phytotoxicity in standard germination tests, and thus reduce the percent germination of a seed lot. The objective of this study was to examine the effect of seed quality on seed storage, stand establishment and yield. Two seed lots of two long-day onion varieties were pelleted and treated with the seed treatments Trigard and Pro-Gro. Standard germination and saturated salt aging tests were performed on each seed lot, indicating a high and lower quality seed lot for each variety. Aging was conducted by equilibrating pelleted seeds at 35% relative humidity and aging at 25 °C for up to 12 months. Aging decreased germination with time, especially for the lower quality lots. Field studies were conducted in two locations in upstate New York. The plant stand was greater in the high compared to the lower quality lots in both varieties at both locations. Yield was reduced in the lower quality than high quality lot; however, the response differed by variety and location. Overall, the initial seed quality had an impact on seed storagability, stand establishment and yield.

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