EurekaMag.com logo
+ Site Statistics
References:
52,725,316
Abstracts:
28,411,598
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

The use of nutrient bioassays to assess the response of Eucalyptus grandis to fertilizer application. 1. Interactions between nitrogen, phosphorus, and potassium in seedling nutrition


Canadian Journal of Forest Research 23(1): 1-6
The use of nutrient bioassays to assess the response of Eucalyptus grandis to fertilizer application. 1. Interactions between nitrogen, phosphorus, and potassium in seedling nutrition
The nutritional requirements of Eucalyptus grandis Hill ex Maiden seedlings were studied in glasshouse pot experiments. Nitrogen (N), phosphorus (P), and potassium (K) demand was assessed by bioassays, in which the uptake of tracers (15N, 32P, or 86Rb) by roots excised from the seedlings grown at different levels of nutrient supply was measured. A pilot study showed that there was an inverse relationship between nutrient supply and influx. The measured influx was affected by the length of time that the roots were stored before the bioassay was applied. In a 3(3) N, P, and K factorial nutrient experiment, growth was primarily influenced by N. Maximum growth occurred at the highest level of supply of each of the three nutrients. N and K influx in the root bioassay was inversely related to foliar N and K concentration, but P uptake was not related to foliar P concentration. These results indicate that the root bioassays are more sensitive determinants of nutrient limitation than foliar analysis. Interactions between N and P and between N and K alter the stem:leaf ratio, which may be of importance in optimizing wood production.

Accession: 002530502

DOI: 10.1139/x93-001

Download PDF Full Text: The use of nutrient bioassays to assess the response of Eucalyptus grandis to fertilizer application. 1. Interactions between nitrogen, phosphorus, and potassium in seedling nutrition



Related references

The use of nutrient bioassays to assess the response of Eucalyptus grandis to fertilizer application. 2. A field experiment. Canadian Journal of Forest Research 23(1): 7-13, 1993

The response of Eucalyptus grandis to fertilising with nitrogen, phosphorus, potassium and dolomitic lime on a Mispah soil series. South African Forestry Journal (124): 4-12, 1983

Dry mass partitioning and nitrogen uptake by Eucalyptus grandis plants in response to localized or mixed application of phosphorus. Plant and Soil 319(1-2): 175-184, 2009

Responses of citrus citrus sinensis to nitrogen phosphorus potassium fertilizer on 2 soils of rarotonga cook islands new zealand 1. effects of nitrogen phosphorus potassium fertilizer rate on soil properties and leaf nutrient levels. New Zealand Journal of Agricultural Research 28(4): 475-486, 1985

Responses of citrus citrus sinensis to nitrogen phosphorus potassium fertilizer on 2 soils of rarotonga cook islands 2. effects of nitrogen phosphorus potassium fertilizer rate soil properties and leaf nutrient levels on yield and tree size. New Zealand Journal of Agricultural Research 28(4): 487-496, 1985

Fertilizer nitrogen, phosphorus and potassium nutrient regime of barley at different methods of application. Agrokhimiia (11) 81-88, 1980

Fertilizer/site interactions on the growth and foliar nutrient levels of Eucalyptus grandis. Forest Ecology and Management 30(1-4): 247-257, 1990

Soil nutrient status of a litchi orchard following application of nitrogen, phosphorus and potassium fertilizer. Horticultural Journal 5(2): 85-90, 1992

Nitrogen, phosphorus, and potassium nutrition of tomatoes at different levels of fertilizer application and of irrigation. Proc Amer Soc Hort Sci 42: 535-544, 1943

Relationship between growth rate and foliar concentrations of nitrogen, phosphorus and potassium for Eucalyptus grandis. South African Forestry Journal (120): 19-23, 1982