Foliar nutrient dynamics of 11-year-old loblolly pine (Pinustaeda) following nitrogen fertilization

1996 ◽  
Vol 26 (8) ◽  
pp. 1426-1439 ◽  
Author(s):  
Shangshan Zhang ◽  
H. Lee Allen
Keyword(s):  
Loblolly Pine ◽  
Nitrogen Fertilization ◽  
Nutrient Dynamics ◽  
Nutrient Deficiency ◽  
Growth Period ◽  
Nutrient Content ◽  
Crown Height ◽  
Foliar Nutrient ◽  
K Concentration ◽  
Internal Balance

Foliar macronutrient (N, P, K, Ca, Mg) concentration, content, retranslocation, internal balance, and variation with crown location and foliage age were quantified in 11-year-old loblolly pine (Pinustaeda L.) trees grown in two soil nitrogen regimes. Concentrations of N, P, and K decreased with foliage age, while the concentration of Ca increased. Nutrient content of new foliage increased with the elongation of foliage. Estimates of retranslocation were 75%, 73%, 83%, 28%, and less than 5% for N, P, K, Mg, and Ca, respectively. Increases in nutrient content of new foliage were associated with decreases in nutrient content of old foliage, suggesting transfer of nutrients to developing foliage. Concentrations and contents of P and K were greatest in the upper crown. Differences in N concentration among crown locations were small, although N content increased in the upper portion of the crown. Calcium and Mg concentrations decreased with crown height, but their contents generally did not differ among crown locations. Nitrogen fertilization increased N and Ca concentrations and fascicle weight, decreased P and Mg concentrations, and had no significant effect on K concentration. For the purposes of determining nutrient deficiency, our results suggest that foliar samples should be collected from 1-year-old foliage in the midcrown position during the rapid growth period for new shoots.

Fascicle nutrient and biomass responses of young loblolly pine to control of woody and herbaceous competitors

1999 ◽  
Vol 29 (7) ◽  
pp. 917-925 ◽  
Author(s):  
B R Zutter ◽  
J H Miller ◽  
H L Allen ◽  
S M Zedaker ◽  
M B Edwards ◽  
...  
Keyword(s):  
Loblolly Pine ◽  
Nutrient Content ◽  
Control Treatment ◽  
Nutrient Concentrations ◽  
Competition Study ◽  
Foliar Nutrient ◽  
K Concentration ◽  
Herbaceous Weed Control ◽  
Pinus Taeda L ◽  
Positive Effect

Individual fascicle mass and foliar nutrient content and concentration of young loblolly pine (Pinus taeda L.) were evaluated on 13 locations of a regionwide competition study in the southeastern United States. The study included a factorial combination of two levels of herbaceous weed control treatment (none, treated) and two levels of woody treatment (none, treated) following site preparation. At pine age 2 years, herbaceous treatment (HT) and woody treatment (WT) had a positive effect on individual fascicle biomass and content of N, P, and K at nearly all and at least half of the locations, respectively. In general, these effects mirrored responses noted for seedling diameter and height. N concentration increased and P concentration decreased at about half of the locations, while Ca and Mg concentrations decreased on nearly all locations with HT. By age 6 years, effects of HT and WT on fascicle mass and nutrient concentrations and contents became neutral or more neutral across the locations. This is attributed in part to the greater nutrient demand of larger crop pines and associated competition components. A notable exception from neutral effects at age 6, typically occurring on sites with high levels of woody vegetation, was the positive response in K concentration or content and negative response in Ca and Mg concentrations with WT.

Intraseasonal growth and nutrient composition of jack pine needles following fertilization

1981 ◽  
Vol 11 (3) ◽  
pp. 696-702 ◽  
Author(s):  
L. D. Morrow ◽  
V. R. Timmer
Keyword(s):  
Nitrogen Fertilization ◽  
Dry Matter ◽  
Dry Weight ◽  
Nutrient Status ◽  
Nutrient Content ◽  
Growing Season ◽  
Jack Pine ◽  
Matter Production ◽  
Foliar Nutrient ◽  
Seasonal Responses

Seasonal responses in dry weight, nutrient concentration, and nutrient content of current and year-old needles of plantation jack pine (Pinusbanksiana Lamb.) were examined after treatment with factorial combinations of N, P, and K applied at 0 and 100 kg/ha, respectively. Nitrogen fertilization not only increased dry matter production and N composition of new needles, but also increased uptake of P, K, Ca, and Mg by prolonging the active growing season. Net translocation of N from old to new foliage occurred only in N-deficient trees at the peak of the growing season. Application of P and (or) K failed to increase growth and nutrient uptake of needles, except for P additions which induced luxury consumption of phosphorous. Diagnosis of foliar nutrient status indicated P and K as sufficient and N as deficient for growth in this stand.

scholarly journals Changes in foliar nutrient content and resorption in Fraxinus excelsior L., Ulmus minor Mill. and Clematis vitalba L. after prevention of floods

1999 ◽  
Vol 56 (8) ◽  
pp. 641-650 ◽  
Author(s):  
Michèle Trémolières ◽  
Annik Schnitzler ◽  
José-Miguel Sánchez-Pérez ◽  
Diane Schmitt
Keyword(s):  
Nutrient Content ◽  
Fraxinus Excelsior ◽  
Ulmus Minor ◽  
Foliar Nutrient ◽  
Clematis Vitalba

scholarly journals Integrating Stand and Soil Properties to Understand Foliar Nutrient Dynamics during Forest Succession Following Slash-and-Burn Agriculture in the Bolivian Amazon

PLoS ONE ◽  
2014 ◽  
Vol 9 (2) ◽  
pp. e86042 ◽  
Author(s):  
Eben N. Broadbent ◽  
Angélica M. Almeyda Zambrano ◽  
Gregory P. Asner ◽  
Marlene Soriano ◽  
Christopher B. Field ◽  
...  
Keyword(s):  
Soil Properties ◽  
Nutrient Dynamics ◽  
Forest Succession ◽  
Slash And Burn ◽  
Slash And Burn Agriculture ◽  
Bolivian Amazon ◽  
Foliar Nutrient

scholarly journals Molecular Mechanisms and Biochemical Pathways for Micronutrient Acquisition and Storage in Legumes to Support Biofortification for Nutritional Security

2021 ◽  
Vol 12 ◽  
Author(s):  
Manish Roorkiwal ◽  
Sarita Pandey ◽  
Dil Thavarajah ◽  
R. Hemalatha ◽  
Rajeev K. Varshney
Keyword(s):  
Molecular Mechanisms ◽  
Food System ◽  
Significant Risk ◽  
Nutrient Deficiency ◽  
Nutrient Content ◽  
Sub Saharan Africa ◽  
Nutritional Security ◽  
Legume Crops ◽  
Sub Saharan ◽  
Poor Nutrition

The world faces a grave situation of nutrient deficiency as a consequence of increased uptake of calorie-rich food that threaten nutritional security. More than half the world’s population is affected by different forms of malnutrition. Unhealthy diets associated with poor nutrition carry a significant risk of developing non-communicable diseases, leading to a high mortality rate. Although considerable efforts have been made in agriculture to increase nutrient content in cereals, the successes are insufficient. The number of people affected by different forms of malnutrition has not decreased much in the recent past. While legumes are an integral part of the food system and widely grown in sub-Saharan Africa and South Asia, only limited efforts have been made to increase their nutrient content in these regions. Genetic variation for a majority of nutritional traits that ensure nutritional security in adverse conditions exists in the germplasm pool of legume crops. This diversity can be utilized by selective breeding for increased nutrients in seeds. The targeted identification of precise factors related to nutritional traits and their utilization in a breeding program can help mitigate malnutrition. The principal objective of this review is to present the molecular mechanisms of nutrient acquisition, transport and metabolism to support a biofortification strategy in legume crops to contribute to addressing malnutrition.

scholarly journals Micronutrient Availability from Steel Slag Amendment in Pine Bark Substrates

2016 ◽  
Vol 34 (3) ◽  
pp. 67-74
Author(s):  
James E. Altland ◽  
James C. Locke ◽  
Wendy L. Zellner
Keyword(s):  
Plant Uptake ◽  
Steel Slag ◽  
Nutrient Deficiency ◽  
Dry Weight ◽  
Nutrient Content ◽  
Sole Source ◽  
Pine Bark ◽  
Mineral Nutrient ◽  
Micronutrient Availability ◽  
Base Substrate

Steel slag is a byproduct of the steel industry that can be used as a liming agent, but also has a high mineral nutrient content. While micronutrients are present in steel slag, it is not known if the mineral form of the micronutrients would render them available for plant uptake. The objective of this research was to determine if steel slag could be used as the sole micronutrient source for container-grown nursery crops. Butterfly bush (Buddleja davidii ‘Pink Delight’) and rose (Rosa ‘Radrazz’) were grown in #3 (3 gal) containers in a base substrate composed of pine bark and peatmoss (80:20, by vol). The base substrate was amended with the following treatments: with a complete controlled release fertilizer (CRF) including micronutrients (C-control), a substrate amended with a different CRF containing only N, P, and K along with a granular micronutrient package (M-control), and three additional treatments amended with the CRF (N, P, and K only) and either 1.2, 2.4, or 4.8 kg·m−3 (2, 4, and 8 lb·yd−3) of steel slag. Plants were harvested at 2 and 4 months after potting (MAP). None of the plants displayed any sign of nutrient deficiency or toxicity throughout the experiment. However, plants grown in the substrate amended with the highest slag rate [4.8 kg·m−3 (8 lb·yd−3)] had lower shoot dry weight (SDW) than both control groups. Substrate pH increased with increasing slag rate, which may have affected micronutrient availability in those substrates. Among the micronutrients analyzed, only Copper (Cu) was consistently deficient in both the substrate and foliar tissue of slag-amended treatments. Steel slag either does not provide a sufficient quantity of Cu or the concomitant increase in pH with increasing rates of steel slag renders Cu unavailable for plant uptake. Steel slag should not be used as the sole source of micronutrients for shrubs grown in pine bark-based substrates.

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