Extension publications and summaries of demonstrations and research conducted involving corn hybrids in Pennsylvania.

The maps are designed to provide some guidance for selecting corn hybrids based on their growing degree day requirement and climatological data for Pennsylvania.

Selecting the best corn hybrids can be a significant factor in the profitability of a corn production enterprise.

Seven hybrids were planted in a field that was chisel plowed and disked following corn. Individual plots were six rows wide and approximately 1000 feet long. Each treatment was replicated twice. The field was planted on 5/1 and harvested on 10/25 and the shelled corn was weighed in a weigh wagon.

Plant population recommendations and responses for silage have shown optimum populations range from 30,000 to 36,000 in previous research conducted at Rock Springs in central Pennsylvania with normal hybrids. In one study conducted in southeast Pennsylvania in 1998, we found the optimum plant population to be less than 30,000 plants per acre.

It was uncertain whether the Roundup Ready gene GA21 caused any detrimental effects on yield or other agronomic traits. We also were interested in determining whether a Roundup based herbicide program had any effect on agronomic performance compared to a conventional herbicide program.

The objective of this research was to evaluate the yield potential of various Roundup Ready hybrids and several conventional hybrids.

We're fortunate in Pennsylvania in many ways that we avoid some of the biotech issues that surface in the Corn Belt where corn is processed. Even so, there are still many interesting issues that unfold as the biotech revolution unfolds here, too.

Now that the use of Bt corn hybrids is increasing nationwide, many questions have been posed by beef producers regarding the performance of beef animals when fed diets consisting of Bt corn.

In numerous on-farm trials conducted around the state this year we evaluated the potential benefits of Bt corn.

Corn maturity decisions are not always as simple as they should be. Take time to reevaluate your situation

Documented consistency in yield performance is still the key to success in selecting hybrids that will perform well in your farming operation.