อาการ
Severely affected leaf (left) shows red and purple tints with interveinal streaky lesions. Whilst mildly affected leaf (centre and right) shows interveinal chlorosis and streaky lesions only.
เหตุผล
Magnesium deficiency
Iron and manganese deficiencies show similar symptoms but begin at younger leaves.
อาการ
First symptom is interveinal chlorosis at the older leaves. With progressing deficiency the yellow stripes show red and purple tints.
เหตุผล
Magnesium deficiency
Iron and manganese deficiencies show similar symptoms but begin at younger leaves.
อาการ
First symptom is interveinal chlorosis at the older leaves. With progressing deficiency the yellow/white stripes show red and purple tints and streaky lesions.
เหตุผล
Magnesium deficiency
Iron and manganese deficiencies show similar symptoms but begin at younger leaves.
อาการ
First symptom is interveinal chlorosis at the older leaves. White necrotic spots later develop within these chlorotic zones which coalesce to necrotic stripes between the veins. With progressing deficiency the tips and edges may die off. Growth of plant is normal, unless deficiency is severe.
เหตุผล
Magnesium deficiency
Iron and manganese deficiencies show similar symptoms but begin at younger leaves.
อาการ
First symptom is interveinal chlorosis at the older leaves. Yellow to white stripes or typical beaded lesions occur; tissue along the main vein stays green for the longest time.
เหตุผล
Magnesium deficiency
Iron and manganese deficiencies show similar symptoms but begin at younger leaves.
อาการ
First symptom is interveinal chlorosis at the older leaves. Yellow to white stripes or typical beaded lesions occur; tissue along the main vein stays green for the longest time.
เหตุผล
Magnesium deficiency
Iron and manganese deficiencies show similar symptoms but begin at younger leaves.
อาการ
First symptom is interveinal chlorosis at the older leaves. With progressing deficiency the yellow stripes show red and purple tints.
เหตุผล
Magnesium deficiency
Iron and manganese deficiencies show similar symptoms but begin at younger leaves.
อาการ
First symptom is interveinal chlorosis at the older leaves. With progressing deficiency the yellow stripes show red and purple tints.
เหตุผล
Magnesium deficiency
Iron and manganese deficiencies show similar symptoms but begin at younger leaves.
Maize: 5 l/ha at the 4 to 8 leaf stage. Water rate: 30 to 200 l/ha. N.B. Do not spray in slow drying conditions. Alternatively: 2 to 5 l/ha at the 4 to 6 leaf stage. Repeat 10 to 14 days later if necessary. Water rate: 30 to 200 l/ha
อ่านเพิ่มเติม YaraVita CROP BOOSTMaize: 2-4 l/ha at 4-6 leaf stage. Water rate: 200 l/ha.
อ่านเพิ่มเติม YaraVita MAGFLO 300