Phosphorus deficiency-Sugarcane

Symptoms
Symptoms of phosphorus deficiency vary with the different varieties of sugarcane. This photo shows a purple discoloration of the stem, but discoloration of the tips of older leaves is also possible.

Reasons
Phosphorus deficiency Similar symptoms are caused by weakened root systems due to poor soil texture, salinity or diseases. To prevent yield losses caused by P deficiency it is essential that P is available for early growth of new roots and shoots.

Symptoms
Symptoms of phosphorus deficiency vary with the different varieties of sugarcane. In this case, a reddish to brown discoloration starts on the main leaf vein and along the leaf edges. Older leaves and stalk bases turn uniformly brown.

Reasons
Phosphorus deficiency Similar symptoms are caused by weakened root systems due to poor soil texture, salinity or diseases. To prevent yield losses caused by P deficiency it is essential that P is available for early growth of new roots and shoots.

Symptoms
Symptoms of phosphorus deficiency vary with the different varieties of sugarcane. In this case, a reddish to brown discoloration starts on the main leaf vein and along the leaf edges. Additionally, small whitish spots with a brown seam occur along the midrib.

Reasons
Phosphorus deficiency Similar symptoms are caused by weakened root systems due to poor soil texture, salinity or diseases. To prevent yield losses caused by P deficiency it is essential that P is available for early growth of new roots and shoots.

Symptoms
Symptoms of phosphorus deficiency vary with the different varieties of sugarcane. Generally the symptoms are shown on older leaves first. Necrotic dark spots or/and dark red stripes occur between veins and along leaf margins on a dark green foundation. The leaves are narrower and shorter than normal and may be more erect. Later on, older leaves may turn yellow, dying back from the tip and margins. Young leaves usually stay dark green for some time. Crops are poorly rooted, poorly tillered and young shoots may die back before emerging. Stalks are thin and short. Reduction of yield and quality.

Reasons
Phosphorus deficiency Similar symptoms are caused by weakened root systems due to poor soil texture, salinity or diseases. To prevent yield losses caused by P deficiency it is essential that P is available for early growth of new roots and shoots.