Mo deficiency in Ribes

Mo deficiency in Ribes

Login to access our suggested solutions.

Scientific Name
Molybdenum (Mo)
Atomic Number
42
Atomic Weight u
95.95
Elemental Group
Micro elements (B, Cl, Cu, Fe, Mn, Mo, Ni, Zn) | Micronutrients
Available Forms

Available forms of Molybdenum (Mo) for use in Container Nursery Stock

  • Ammonium molybdate ((NHâ‚„)₆Mo₇O₂₄·4Hâ‚‚O) – highly soluble, commonly used in fertigation or foliar sprays.
  • Sodium molybdate (Naâ‚‚MoO₄·2Hâ‚‚O) – soluble, quick correction via substrate or foliar application.
  • Molybdenum trioxide (MoO₃) – less soluble, used in slow-release or granular fertilizers.
  • Chelated molybdenum (Mo-EDDHA, Mo-DTPA) – stable in a range of pH conditions, effective in complexed micronutrient formulations.
  • Molybdic acid (Hâ‚‚MoOâ‚„) – occasionally used as a source in substrate amendments.

Molybdenum (Mo) Deficiency in Ribes – Container Nursery Stock

Symptoms

  • Interveinal chlorosis on older leaves, progressing to overall pale foliage.
  • Leaves may appear twisted or distorted.
  • Stunted growth and reduced vigor of new shoots.
  • Flower and fruit development can be impaired, reducing crop quality.
  • In severe cases, leaf necrosis and dieback may occur.

Causes

  • Low molybdenum availability in acidic or sandy substrates.
  • Molybdenum deficiency is more common in soils with pH below 5.5.
  • High levels of iron, aluminum, or manganese can reduce Mo uptake.
  • Insufficient fertilization or omission of micronutrient blends containing Mo.

Correction

  • Foliar application of molybdate salts (e.g., ammonium molybdate or sodium molybdate) for rapid response.
  • Incorporation of molybdenum fertilizers into the substrate for longer-term correction.
  • Adjust substrate pH to slightly acidic to neutral (around 6–7) to improve Mo availability.

Prevention

  • Routine use of micronutrient blends including molybdenum.
  • Monitoring substrate pH and adjusting as needed to maintain optimal range.
  • Avoid excessive use of antagonistic nutrients (like iron or aluminum) that reduce Mo uptake.
  • Regularly inspect plants for early deficiency signs and correct promptly.

Mo deficiency in Ribes

Scientific Name
Molybdenum (Mo)
Atomic Number
42
Atomic Weight u
95.95
Elemental Group
Micro elements (B, Cl, Cu, Fe, Mn, Mo, Ni, Zn) | Micronutrients
Available Forms

Available forms of Molybdenum (Mo) for use in Container Nursery Stock

  • Ammonium molybdate ((NHâ‚„)₆Mo₇O₂₄·4Hâ‚‚O) – highly soluble, commonly used in fertigation or foliar sprays.
  • Sodium molybdate (Naâ‚‚MoO₄·2Hâ‚‚O) – soluble, quick correction via substrate or foliar application.
  • Molybdenum trioxide (MoO₃) – less soluble, used in slow-release or granular fertilizers.
  • Chelated molybdenum (Mo-EDDHA, Mo-DTPA) – stable in a range of pH conditions, effective in complexed micronutrient formulations.
  • Molybdic acid (Hâ‚‚MoOâ‚„) – occasionally used as a source in substrate amendments.
Mo deficiency in Ribes

Molybdenum (Mo) Deficiency in Ribes – Container Nursery Stock

Symptoms

  • Interveinal chlorosis on older leaves, progressing to overall pale foliage.
  • Leaves may appear twisted or distorted.
  • Stunted growth and reduced vigor of new shoots.
  • Flower and fruit development can be impaired, reducing crop quality.
  • In severe cases, leaf necrosis and dieback may occur.

Causes

  • Low molybdenum availability in acidic or sandy substrates.
  • Molybdenum deficiency is more common in soils with pH below 5.5.
  • High levels of iron, aluminum, or manganese can reduce Mo uptake.
  • Insufficient fertilization or omission of micronutrient blends containing Mo.

Correction

  • Foliar application of molybdate salts (e.g., ammonium molybdate or sodium molybdate) for rapid response.
  • Incorporation of molybdenum fertilizers into the substrate for longer-term correction.
  • Adjust substrate pH to slightly acidic to neutral (around 6–7) to improve Mo availability.

Prevention

  • Routine use of micronutrient blends including molybdenum.
  • Monitoring substrate pH and adjusting as needed to maintain optimal range.
  • Avoid excessive use of antagonistic nutrients (like iron or aluminum) that reduce Mo uptake.
  • Regularly inspect plants for early deficiency signs and correct promptly.