Nitrogen deficiency-Soybean | Yara United States

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

YaraVera® AMIDAS® 40-0-0

Read more about YaraVera® AMIDAS® 40-0-0

NUTRA-PHOS Zn-K PLUS

Soya Bean: 2 to 10 lb. per acre per application. First application at bud to early-bloom stage, repeat in 2 to 3 weeks. Apply aerial applications in at least 5 gallons/acre and ground applications in at least 10 gallons/acre; however, when total application gallonage is 25 gallons per acre or less, DO NOT mix more than 1 lb. of this product per gallon of water.