Evaluating the nutrient status and fertilization response potential of planted spruce in the interior of British Columbia

1994 ◽  
Vol 24 (3) ◽  
pp. 594-602 ◽  
Author(s):  
K.I. Swift ◽  
R.P. Brockley
Keyword(s):  
British Columbia ◽  
Nutrient Concentration ◽  
Nutrient Status ◽  
N Fertilization ◽  
First Year ◽  
Concentration Data ◽  
Foliar Nutrient Concentration ◽  
Foliar Nutrient ◽  
Complete Fertilizer ◽  
Relative Differences

Factorial combinations of nitrogen (0, 100, and 200 kg/ha) and a "complete" fertilizer (0 and 1170 kg/ha) were applied to 10 spruce (Piceaglauca (Moench) Voss and hybrids) plantations in the central interior of British Columbia. Postfertilization patterns of foliar nutrient concentration and needle weight were used to evaluate the nutrient status and fertilization response potential of treated stands. When applied alone, N and the complete fertilizer generally had little effect on the weight of needles produced in the first year after treatment. Combined applications, however, often resulted in large responses. In 8 of the 10 installations, combined applications of N + complete fertilizer were significantly more effective than N alone in stimulating first-year needle weight. Which nutrient in the complete fertilizer is responsible for the increased needle-weight response cannot be stated conclusively. However, examination of foliar nutrient concentration data, combined with graphical analyses of relative differences in needle weight and nutrient concentration of added and nonadded nutrients, indicate that sulphur (and possibly potassium) may have a strong controlling influence on the N fertilization response potential of these stands. Systematic testing must be undertaken to verify these tentative diagnoses.

Foliar nutrient status and fascicle weight of lodgepole pine after nitrogen and sulphur fertilization in the interior of British Columbia

1994 ◽  
Vol 24 (4) ◽  
pp. 792-803 ◽  
Author(s):  
R.P. Brockley ◽  
F.J. Sheran
Keyword(s):  
British Columbia ◽  
Lodgepole Pine ◽  
Nutrient Status ◽  
Application Rate ◽  
Elemental Sulphur ◽  
First Year ◽  
Sulphur Concentration ◽  
Foliar Nutrient ◽  
Nitrogen Additions

The effects of nitrogen and nitrogen + sulphur fertilization on the first-year fascicle weight and foliar nutrient status of immature, thinned lodgepole pine (Pinuscontorta Dougl. var. latifolia Engelm.) were evaluated at seven locations in the interior of British Columbia. The results indicate that sulphur deficiencies, either aggravated or induced by nitrogen fertilization, may limit the responsiveness of lodgepole pine to nitrogen additions. At four locations, combined sulphur and nitrogen additions improved the sulphur status of fertilized trees and significantly increased the weight of fascicles produced during the first year after treatment compared with that achieved with nitrogen alone. Ammonium sulphate was a superior sulphur source compared with elemental sulphur–sodium bentonite prills and also was readily taken up by trees. The oxidation of the elemental sulphur prills was apparently too slow to satisfy sulphur requirements in the first year. Increasing the sulphur application rate from 50 to 100 kg/ha generally gave only small improvements in first-year fascicle weight response despite a significant improvement in foliar sulphur concentration and content. The responsiveness to sulphur fertilization was not consistent across all sites. Further characterization of sites that are responsive and unresponsive to sulphur additions is needed to more accurately diagnose sulphur deficiencies and predict responsiveness to sulphur additions.

CARRY-OVER EFFECTS OF HIGH FERTILIZER RATES ON NATIVE SEDGE BOG VEGETATION IN INTERIOR BRITISH COLUMBIA

1968 ◽  
Vol 48 (1) ◽  
pp. 49-55 ◽  
Author(s):  
W. L. Pringle ◽  
A. L. van Ryswyk
Keyword(s):  
British Columbia ◽  
Application Rate ◽  
First Year ◽  
Fertilizer Treatment ◽  
Monthly Precipitation ◽  
Fertilizer Response ◽  
Equal Importance ◽  
Carry Over ◽  
Complete Fertilizer ◽  
Fertilizer Rates

A factorial fertilizer trial using rates of 0, 224 and 448 kg/ha of N, P2O5 and K2O in all combinations, was established on a sedge bog in the Cariboo area of British Columbia. Yields taken in the subsequent 5 years showed that a complete fertilizer in a 1:1:2 ratio was most efficient. The most limiting of the three elements was P, followed by K. Nitrogen had an effect in the first year only. Yearly fluctuations in yields and certain fertilizer response could be related to monthly precipitation. Tissue analysis revealed that, where supplied, N and P were increased in the first year only while K was increased in all years by the higher application rate. Presumably, it was taken up in luxury amounts in the first year. Digestibility of the forage was not affected by fertilizer treatment. It was concluded that hay quantity increased through the use of complete fertilizers and that elemental ratio is of equal importance to the rate. The entire picture was not complete as the test was still giving significant carry–over responses 5 years after the initial harvest.

Growth and foliar nutrient concentration response of Clerodendrum thomsoniae to increasing fertilization

2012 ◽  
Vol 14 (01) ◽  
pp. 29-32
Author(s):  
Karen I Davis ◽  
Carl E. Niedziela Jr. ◽  
Brian E. Whipker ◽  
Muchha R. Reddy
Keyword(s):  
Nutrient Concentration ◽  
Foliar Nutrient Concentration ◽  
Foliar Nutrient

The activity of dung beetles increases foliar nutrient concentration in tropical seedlings

Biotropica ◽  
2016 ◽  
Vol 48 (5) ◽  
pp. 565-567 ◽  
Author(s):  
Carolina Santos-Heredia ◽  
Ellen Andresen ◽  
Ek del-Val ◽  
Diego A. Zárate ◽  
Maribel Nava Mendoza ◽  
...  
Keyword(s):  
Nutrient Concentration ◽  
Dung Beetles ◽  
Foliar Nutrient Concentration ◽  
Foliar Nutrient

scholarly journals Yield, quality and foliar nutrient concentration of 'Orlando' tángelo under different fertilizer regimes

1969 ◽  
Vol 85 (1-2) ◽  
pp. 41-47
Author(s):  
Agenol González-Vélez ◽  
Gerardo Ruiz-Sifre
Keyword(s):  
Nutrient Concentration ◽  
Fruit Weight ◽  
Foliar Nutrient Concentration ◽  
Foliar Nutrient ◽  
Cumulative Production ◽  
Foliar Concentrations ◽  
Yield Quality ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus ◽  
Different Levels

An experiment was done to evaluate the effect of different levels of nitrogen, phosphorus and potassium fertilization on the yield, quality and foliar nutrient concentration of 'Orlando' tángelo in a Corozaf clay soil. Nitrogen levels evaluated were 0,85.2,170 and 341 kg/ha. Levels of phosphorus evaluated were 0,12.4, 24.8 and 49.6 kg/ha; and potassium levels were 0, 47.8, 94.6 and 188 kg/ha. A significant linear response was found between the nitrogen application and the cumulative production of fruits per tree. High application of nitrogen was related to high cumulative production. No significant relationship was found between the phosphorus and potassium levels and the cumulative production. The application of different levels of nitrogen, phosphorus, and potassium had no effect on the average fruit weight and the quality of fruits in terms of pH, brix, acidity and brix/acidity rate. The different levels of nitrogen significantly affected the foliar nutrient concentration of nitrogen, calcium, potassium and phosphorus. Different applications of phosphorus significantly affected the foliar concentrations of calcium and potassium. The levels of potassium had no significant effect on the foliar concentrations of the different elements evaluated.

Foliar Nutrient Concentration Differences Between Provenances of Douglas Fir and Their Significance to Foliar Analysis Interpretation

1973 ◽  
Vol 3 (2) ◽  
pp. 323-328 ◽  
Author(s):  
R. van den Driessche
Keyword(s):  
Nutrient Concentration ◽  
Coastal Region ◽  
Douglas Fir ◽  
Shoot Length ◽  
Nutrient Concentrations ◽  
Foliar Nutrient Concentration ◽  
Foliar N ◽  
Foliar Nutrient ◽  
Foliar Nutrient Concentrations ◽  
The Relationship

Foliar nutrient concentration differences between provenances, and the relationship between foliar nutrient levels and provenance growth was examined in Douglas fir (Pseudotsugamenziesii (Mirb.) Franco) from the coastal region of British Columbia.In the first experiment differences in foliar nutrient concentrations among four provenances of 3-year old plants, ranged from 8 to 18%. The relationships between these provenances differed according to whether needle, or whole plant nutrient concentrations were considered.In the second experiment 2-year old plants of three provenances, grown under four fertilizer regimes, at each of three nurseries, showed that differences in growth and foliar nutrient concentrations between provenances were affected by nursery. The degree of correlation between shoot length and foliage nutrient concentration varied according to provenance. Coefficients for the regression of shoot length on foliar N and K differed between provenances even when provenance foliar N and K levels were similar. It was suggested that the relationship between foliar nutrient concentrations and shoot length may differ between provenances.

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