Low Soil pH
Appearance: Foliage will develop purplish color.
Symptoms: Stunted plant growth, inadequate tillering and plant death in extreme circumstances.
Scouting: Soil testing to confirm acidity levels.
Treatment: Lime according to soil test recommendations. Apply in furrow phosphorous at planting.
OSU & KSU Photos
Symptoms: Plants may show stunted growh, purple leaves and/or poor root development; occurs with low pH soils.
Scouting: Look for poor emergence in fall and other symptoms in early spring; take soil test for determination.
Treatment: Some varieties have higher Aluminum toxicity resistance; also a lime application to correct pH may be warranted.
| KSU Photo|
Symptoms: Yellow striping between leaf veins on new growth.
Scouting: Look for symptoms in early spring during "green up" period; take soil sample to determine pH levels.
Treatment: Select varieties with higher resistance to calcareous soils.
Nitrogen Leaf Burning
Symptoms: Browning of tissue exposed to fertilizer on the leaves in a distinct pattern left by the application rig.
Scouting: Occurs topically just after topdress applications.
Treatment: Should grow out of it; use of streaming nozzles versus flat fan nozzles may reduce the amount of leaf burn from topdressed nitrogen.
KSU & OSU Photos
Symptoms: Plants often have stunted growth with a purple hue on leaves.
Scouting: Look for stunted growth after emergence and during early spring growth; soil test questionable field to confirm Phosphorous levels.
Treatment: Apply Phosphorous according to soil test needs to correct deficiency levels for the next crop.