Root System Development of Juvenile Ponderosa Pine as Influenced by Soil Type and Nutritional Augmentation

Rf, Walker; Rb, Susfalk; Dw, Johnson

doi:10.4172/2168-9776.1000187

Cited by 1 publication

(1 citation statement)

References 14 publications

(17 reference statements)

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“…Most sandy nursery soils have more than this amount and "some researchers report that K fertilization is not needed in forest tree nurseries" (May 1985, p 12-22). For example, when soil is used as growing media, some researchers do not add K when applying 200 kg ha -1 of N (Walker et al 2016).…”

Section: K Application Before Sowingmentioning

confidence: 99%

Potassium fertilization in bareroot nurseries in the southern US: a review

South

2019

REFOR

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This review covers most of the published literature on potassium (K) fertilization in bareroot seedbeds with the intent to concentrate on the southern United States. The timing and rates of K fertilization for bareroot seedlings are often based on logic and myths and, as a result, K recommendations vary considerably. Some recommend bareroot pine seedlings be fertilized with twice as much K as nitrogen (N) while others apply less than 100 kg ha -1 . It was determined that several long-held claims about K fertilization are invalid. Nursery seedbeds do not need to contain four times as much available K as N and the belief that extra K fertilization will increase freeze tolerance or drought resistance of non-deficient seedlings is invalid. There are no data to support the claim that K fertilization increases root growth or assists in the formation of terminal buds. For sandy seedbeds, there is no need to apply K before sowing. Adding extra K during the fall does not increase seedling morphology or seedling performance when loblolly pine seedlings, at lifting, have more than 0.5% K in needles. A reduction of K fertilization can be achieved by reviewing foliar tests prior to K top-dressings.

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Section: K Application Before Sowingmentioning

confidence: 99%

Potassium fertilization in bareroot nurseries in the southern US: a review

South

2019

REFOR

View full text Add to dashboard Cite

show abstract

Root System Development of Juvenile Ponderosa Pine as Influenced by Soil Type and Nutritional Augmentation

Cited by 1 publication

References 14 publications

Potassium fertilization in bareroot nurseries in the southern US: a review

Potassium fertilization in bareroot nurseries in the southern US: a review

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