Tuesday, May 21, 2002
I recently wrote a news release that suggested thinking about replanting might be premature because the reports I had indicated the germinating seeds had roots and shoots that were firm, but growing very slowly. While not a heat wave, the temperatures have been warmer and corn is emerging. However, some corn seeds are rotting and I think growers need to look carefully now at the situation so they can replant if necessary.
Tuesday, May 14, 2002
D. R. Hicks, Agronomy and Plant Genetics
A major portion (76%) of the Minnesota corn crop has been planted with the remainder delayed because of wet soil conditions and growers may wonder about the maturities of the hybrids they will be planting. Growers have made hybrid choices based on maturities for their normal planting dates. Growers should "stay the course" with their hybrid choices if they can plant by or prior to May 25. If planting does not occur by May 25, then consider maturities as given in Table 1.
Tuesday, January 1, 2002
P.M. Anderson, E.A. Oelke, and S.R. Simmons1
Barley is also classed by its requirement for cold temperatures. Winter barley must be planted so that seedlings will be exposed to cold (vernalized), which enables it to later produce heads and grain normally. Winter barley is usually sown in the fall for exposure to low temperatures during the winter and then development is completed during the following spring and summer. Spring barley does not require exposure to winter temperatures and can be sown in spring. Winter types usually mature somewhat earlier than spring types. Growth and development of the six-rowed spring barley commonly grown in Minnesota will be considered here. Figure 2 shows major developmental stages in spring barley with the approximate time and heat units required to reach each stage. Differences in maturity exist among varieties.