Symptômes
Ears of Cu deficient plants are often trapped in the sheath and emerge with white tips and blind spikelets.
Plants show dry, white and twisted or curled leaf tips (white tip). Young leaves wilt on their tips, whereas the basal leaves remain dark green.
Raisons
Copper deficiency
Severe drought, heavy frosts and herbicide damage can cause blind ears, too.
Symptômes
Young leaves show dry, white and twisted or curled leaf tips (white tip). The basal leaves remain dark green.
The complete plant growth is stunted.
Raisons
Copper deficiency
Symptômes
Young leaves show dry, white and twisted or curled leaf tips (white tip). The basal leaves remain dark green.
The complete plant growth is stunted.
Raisons
Copper deficiency
Symptômes
Ears of Cu deficient plants are often trapped in the sheath and emerge with white tips and blind spikelets.
Less severe symptoms may be seen as curved ears which do not ripen with an accumulation of the dark coloured melanin.
Raisons
Copper deficiency
Symptômes
Ears are often trapped in the sheath and emerge with white tips and blind spikelets. Plants show dry, white and twisted or curled leaf tips (white tip).
Raisons
Copper deficiency
Symptômes
Ears of Cu deficient plants show blind grain sites (blind spikelets) or poor grain formation. As the ears are lightweight they stand more upright than sufficiently supplied ones and give the plant a different habitus.
Raisons
Copper deficiency
Cereals: 1 to 3 l/ha from the 2 leaf stage to second node detectable (Zadok's G.S. 12 to 32). Repeat applications at 10 to 14 day intervals, within this timing, if necessary. For autumn sown crops, an application prior to winter dormancy may also be beneficial. In addition, 1 l/ha from second node detectable to flag leaf fully emerged (Zadoks G.S. 32 to 39). Water rate: 50 to 200 l/ha. Seed Dressing: 3 to 6 litres per tonne.
En savoir plus YaraVita GRAMITRELCereals: 1 l/ha at 2 leaf stage to second node detectable (Zadok's G.S. 12 to 32). Water rate: 200 l/ha. For severe deficiency, increase to 2 l/ha or repeat at the above rate. For autumn-sown crops, an application prior to winter dormancy is strongly recommended. Seed Dressing: Typically 3 litres per tonne. Rate can be increased up to 6 litres per tonne if necessary.
En savoir plus YaraVita MANCOZIN