Nutrients

N Nitrogen
P Phosphorus
K Potassium
Mg Magnesium
Ca Calcium
S Sulphur
B Boron
Cu Copper
Fe Iron
Mn Manganese
Mo Molybdenum
Zn Zinc

Soybean - Chlorosis

Symptoms
Yellowgreen, uniform discoloration of foliage. Older, lower leaves are affected first. Plant growth is stunted.

Reasons
Nitrogen deficiency

Soybean - Chlorosis

Symptoms
Nitrogen deficiency symptoms on soybean vary: the characteristical chlorosis may appear uniformly allover the leaf blade, but can also spread within the interveinal areas. Older, lower leaves are affected first. Plant growth is stunted.

Reasons
Nitrogen deficiency

Soybean - Chlorosis

Symptoms
Nitrogen deficiency symptoms on soybean vary: the characteristical chlorosis may appear uniformly allover the leaf blade, but can also spread within the interveinal areas. Necrotic spots become visible on the leaf margin. Older, lower leaves are affected first.

Reasons
Nitrogen deficiency

Soybean - Chlorosis

Symptoms
Nitrogen deficiency symptoms on soybean vary: the characteristical chlorosis may appear uniformly allover the leaf blade, but can also spread within the interveinal areas. Subsequently, brownish mottling extends between the leaf veins and leaf margins become necrotic.

Reasons
Nitrogen deficiency

Nitrogen deficiency made worse by

  • Low or high pH soils
  • Sandy or light soils (leaching)
  • Low organic matter
  • Drought conditions
  • High rainfall (leaching) or heavy irrigation
  • Addition or high levels of non-decomposed organic matter/manure (eg straw)
  • Fast growing crops

Nitrogen is important for

  • Better synthesis of amino acids
  • Improved formulation of co-enzymes and nucleric acids
  • Increased synthesis of chlorophyll and ATP

Yara recommended fertilizers for Nitrogen

YaraVita® LAST N™ 25-0-0

YaraVita® LAST N™ 25-0-0

Soya bean: 10 to 15 l/ha. Apply pre-flowering. Repeat at pod set if required. Water rate: 100 to 200 l/ha. Alternatively: 10 to 30 l/ha applied at R-2. Last N 25-0-0 can be applied either undiluted or diluted (with water) for aerial or ground application. Use sufficient carrier to adequately cover crop foliage. Soja: 10 à 15 l/ha. Appliquer avant floraison. Répéter au stade formation des gousses si necessaire. Volume d’eau: 100 à 200 l/ha. Alternativement: 10 à 30 l/ha appliqué au stade R-2. Last N 25-0-0 peut être appliqué sans ou avec dilution (avec de l’eau) pour application foliaire ou au sol. Utiliser un volume total suffisant pour bien couvrir le feuillage de la culture

Read more about YaraVita® LAST N™ 25-0-0