scholarly journals Diagnose apricot nutritional status according to foliar analysis

2011 ◽  
Vol 57 (No. 7) ◽  
pp. 301-306 ◽  
Author(s):  
T. Milošević ◽  
N. Milošević
Keyword(s):  
Nutritional Status ◽  
Seasonal Changes ◽  
Foliar Analysis ◽  
Full Bloom ◽  
Nutritional Values ◽  
Vegetative Cycle ◽  
Leaf P ◽  
Leaf N

This experiment was conducted in Cacak (Western Serbia) during 2004 and 2005 to determine the influence of Belosljiva, Dragacevka, Stanley, Kolenstockzwetsche, Wangenheim, Pozegaca, and Kapavac interstocks budded on Myrobalan seedlings on the seasonal changes, leaf macronutrient contents at 120 days after full bloom (DAFB) and deviation from optimum percentage (DOP) of Vera apricot cultivars. The macronutrients analyzed were N, P, K, Ca, and Mg. Nitrogen was consistently decreased during the vegetative cycle on all interstocks, while leaf P, Ca, and Mg had a tendency of increasing, except P on Kapavac. Potassium had a tendency to increase from 60 to 150 AFB, and decreased through 180 DAFB. Leaf N at 120 DAFB was higher in 2005, and P, K, Ca, and Mg in 2004 on all interstocks. Leaf macronutrients were significantly influenced by interstocks, except K. On the basis of DOP index, leaf N, Ca, and Mg were lower than optimum on all interstocks in both years. Leaf P and K were higher than optimum. Stanley and Wangenheim showed the weakest balanced nutritional values than the rest of interstocks.  

scholarly journals Investigations on Determination of Nutritional Status of Pear Trees According to a New Index - Deviation From Optimum Percentage (DOP)

2015 ◽  
Vol 47 (4) ◽  
pp. 83-98 ◽  
Author(s):  
Mitra Mirabdulbaghi
Keyword(s):  
Nutritional Status ◽  
Zinc Sulfate ◽  
Optimum Level ◽  
Full Bloom ◽  
Nutritional Values ◽  
Pear Cultivar ◽  
Pear Trees ◽  
Macro And Micronutrients

Abstract This experiment was conducted in a private orchard (Kosar) in district of Shahriar of Alborz province (Iran), during 2012-2013, to determine the effects of B and Zn applied on flowers at full bloom stage on leaf macro and micronutrient contents at 90 days after full bloom (DAFB) of three pear cultivars (Spadona and Duchesse and a pear cultivar from Iranian national collection, named as Daregazi). The deviation from the optimum percentage (DOP) index of macro and micronutrients for two studied years was used to evaluate the nutritional status: optimal (DOP = 0), deficiency (DOP < 0) or excess (DOP > 0). The SDOP for two studied years is obtained by adding the values of DOP index irrespective of sign. The larger the SDOP, the greater is the intensity of imbalances among nutrients. In general, a DOP value close to the optimum level (DOP = 0) were observed in treated studied pear cultivars with B and Zn applied on flowers at full bloom stage compared with the control trees (without any application of boron and zinc). The DOPmacro and DOPmicro were, respectively, positive and negative for all of studied pear cultivars regardless of treatments. According to £DOP index (during 2012-2013), the combination of both products (borax+zinc sulfate treatments) at full bloom stage applied on flowers of three pear cultivars (Spadona, Duchesse and Daregazi) showed better balanced nutritional values than the rest of treatments.

Effects of Environment and Cultural Conditions on Nitrogen and Phosphorus in Coffee Leaves

1969 ◽  
Vol 5 (4) ◽  
pp. 301-309 ◽  
Author(s):  
J. B. D. Robinson
Keyword(s):  
Nutritional Status ◽  
Regression Equation ◽  
Quadratic Regression ◽  
Nitrogen And Phosphorus ◽  
Total N ◽  
Organic Mulch ◽  
Cultural Conditions ◽  
Leaf P ◽  
P Fertilizers ◽  
Leaf N

SummaryAnalyses of total N and P in coffee leaves from different geographic areas have been compared. The levels of these nutrients are correlated with each other and the quadratic regression equation for leaf N on leaf P has been derived. The value of N/P ratio in the coffee leaf for diagnosing nutritional status is assessed. No correlations were observed between Mg and either N or P. Irrigation of coffee in Kenya on latosolic soils raises leaf P but not N levels, in the absence of organic mulch and fertilizers. Effects of organic mulch, N and P fertilizers on leaf levels of N or P are discussed.

scholarly journals Floral analysis can be use as an early plant analytical tool to diagnose nutritional status of fruit trees?

2009 ◽  
Vol 15 (1-2) ◽  
Author(s):  
P. T. Nagy
Keyword(s):  
Nutritional Status ◽  
Fruit Trees ◽  
Apple Orchard ◽  
Sampling Time ◽  
Full Bloom ◽  
Comparable Amount ◽  
Nutrient Contents ◽  
Standard Sampling ◽  
Positive Correlations ◽  
Leaf P

A field experiment was conducted in an integrated apple orchard (Malus domestica Borkh.) established on a lowland chernozem soil in East-Hungary, to investigate if flower analysis could be used to diagnose the nutritional status of the trees. In April 2008, during full bloom, flowers and leaves were collected. Leaves were collected again in August, at the standard sampling time from the same trees. The content of nitrogen, phosphorous, potassium, calcium magnesium and boron were measured in flowers and in leaves. Correlation analyses were carried out to establish the relation s between nutrient contents in same and different plant part s. In flowers the following ratio was found between nutrients: N:P: K:Ca:Mg:B -10: l.35:7: 1.7: I :0,02. From result s it was evident that flower as organ contain significant and comparable amount of nutrients like as leaf. The N, K and Ca content were higher in leaves than in flowers at full bloom. The opposite was true for B. The P and Mg content of flower were quite equal with leaf P and Mg at full bloom . All examined nutrients were significantly affected by cultivars both in flowers and leaves. Significant correlation, was found between flower P and leaf P, flower B and leaf B (P=O.O 1) and flower K and leaf K at blooming time (P=0.05). Significant, but weaker correlation was also found between flower K and leaf K and between flower Mg and leaf Mg al JOO days after full bloom (P=0.05). Moreover, strong, but negative correlation was observed between flower B and leaf B at 100 clays after full bloom (P=O.O 1). Within flowers, the strongest positive correlation was found between Mg and B content (P=O.O 1). Strong positive correlations were also recognised between flower K and flower N, Ca and Mg and between N and Ca in the flowers (P=0.01). The strongest correlation was found between K and P in leaves at full bloom (P=O.O 1 ). Strong significant correlation was observed between N and B in the leaves collected at standard sampling time (100 DAFB) (P=0.01). Strong, but negative correlations were found bet ween leaf Mg and leaf P, K and between leaf N and leaf P at 100 days after full bloom (P=O.O 1).

scholarly journals Foliar analysis in experimentally grown Lacatan bananas in relation to leaf production and bunch weight.

1962 ◽  
Vol 10 (2) ◽  
pp. 118-126 ◽  
Author(s):  
W.J. Brezowsky ◽  
J. Van Biesen
Keyword(s):  
Rainy Season ◽  
Foliar Analysis ◽  
Depressing Effect ◽  
Leaf Production ◽  
Positive Effect ◽  
Leaf N

Foliar analyses from October to April (the drier part of the year) showed a positive effect of an increased potash application on leaf K, and a depressing effect on leaf Mg. Both these effects were statistically insignificant just before and during the period when most of the plants started to shoot. There was no significant effect of increased N applications on leaf N, except in the early part of the rainy season. Increased K also had a significant effect on bunch weight, hand weight and the number of hands per stem.-Cameroons Develop. Corp. (Abstract retrieved from CAB Abstracts by CABI’s permission)

scholarly journals Nutrient element variability of peach trees and tree mortality in relation to cultivars and rootstocks

2012 ◽  
Vol 29 (No. 2) ◽  
pp. 51-55
Author(s):  
Tsipouridis CG ◽  
Simonis AD ◽  
S. Bladenopoulos ◽  
Issakidis AM ◽  
Stylianidis DC
Keyword(s):  
Tree Mortality ◽  
Prunus Persica ◽  
Nutrient Content ◽  
Nutrient Concentrations ◽  
Nutrient Elements ◽  
Nutrient Element ◽  
Peach Trees ◽  
Leaf P ◽  
Peach Orchard ◽  
Leaf N

Leaf samples from 12 peach cultivars (Prunus persica [L.] Batsch.) (Early Crest, May Crest, Flavor Crest,Sun Crest, Fayette, Katherina, Loadel, Andross, Everts, May Grand, Firebrite and Fairlane) grafted on four peach root-stocks were analyzed for their nutrient content. The analysis of variance for leaf nutrient concentrations indicated very significant effects and interactions among cultivars and rootstocks. The rootstock effect on the absorption of nutrient elements was higher for Ca, K, P, Mg, N, and lower for Cu, Zn, Fe, Mn, and B. Generally cultivars grafted on GF 677 had higher N, K, Fe, Cu and lower Zn, Mn, and B, while leaves from cultivars grafted on wild seedlings were found to contain higher Mg and lower P, K, Fe concentrations. Leaf B and Ca were higher for cultivars grafted on Sant Julien GF 655/2, while cultivars on Damas GF 1869 had higher P, Zn, Mn and lower N, B, Ca, Cu concentrations. Leaf N was lower for Fayette on all four rootstocks and significantly different from all other cultivars. Leaf P was lower for Everts and higher for Katherina. Lower concentrations were observed in Early Crest for Fe and Zn, in Andross for Mn, and in Loadel for B, while Flavor Crest had higher concentrations of all these elements. Leaf Zn was the highest for Sun Crest on wild seedling and the lowest for Early Crest on the same rootstock. Similarly leaf N was the highest for Katherina on Damas and the lowest for Fayetteon the same rootstock. Also leaf Mg was the highest for Fayette on Damas and the lowest for Fairlane on Damas. Peach tree mortality was the highest for Damas 1869 and lowest for Sant Julien. Also tree mortality was highest for Early Crest and Sun Crest and lowest for May Grand, Firebrite, and Katherina. The observed trends in the leaf nutrient composition, as regards the cultivars, rootstocks and their interactions, emphasize the importance of these factors on a new peach orchard establishment and macro-microelement fertilization. &nbsp; &nbsp; &nbsp;

Leaf N, P Stoichiometry and Nutrient Resorption in Phosphorus-Enriched Soils in a Mountainous Region of the Dianchi Lake Watershed

2014 ◽  
Vol 955-959 ◽  
pp. 3687-3690
Author(s):  
Kai Yan ◽  
Changqun Duan ◽  
Long Zhang ◽  
Xin Xv ◽  
Change Liu ◽  
...  
Keyword(s):  
Model Building ◽  
Ecological Model ◽  
Nutrient Resorption ◽  
Dianchi Lake ◽  
Resorption Efficiency ◽  
Fresh Leaf ◽  
The Difference ◽  
Leaf P ◽  
Plant Forms ◽  
Leaf N

Understanding the leaf N, P concentrations and nutrient resorption of plants growing in phosphorus–enriched soil (PES) can provide new data for ecostoichiometric research and ecological model building. In this study, 117 green leaves and 53 senesced leaves of dominant plants in PES in the Dianchi Lake watershed, SW China, were sampled. Plants in PES had high fresh leaf P (4.60mg/g), senesced leaf P (2.70mg/g), and low fresh leaf N: P (4.41), senesced leaf N: P (3.21). P resorption efficiency (PRE) (25.09%) was significantly lower than N resorption efficiency (NRE) (52.68%). Forbs had the highest P content in fresh (5.35mg/g) and senesced leaf (3.25mg/g) among plants forms. Although NRE was varied among plant forms, the difference in PRE was not significant. In conclusion, PES has a tremendous impact on the patterns of leaf N, P and nutrient resorption of different plant forms, those results were different from general results.

Seasonal changes in nutritional status and reproductive performance of Zebu cows kept under a traditional agro-pastoral system in Tanzania

2006 ◽  
Vol 38 (6) ◽  
pp. 511-519 ◽  
Author(s):  
N. L. Kanuya ◽  
M. K. Matiko ◽  
R. Nkya ◽  
S. B. P. Bittegeko ◽  
M. N. Mgasa ◽  
...  
Keyword(s):  
Nutritional Status ◽  
Reproductive Performance ◽  
Seasonal Changes ◽  
Pastoral System ◽  
Zebu Cows

scholarly journals Mulch Improves Pecan Tree Growth during Orchard Establishment

HortScience ◽  
2000 ◽  
Vol 35 (2) ◽  
pp. 192-195 ◽  
Author(s):  
Michael W. Smith ◽  
Becky L. Carroll ◽  
Becky S. Cheary
Keyword(s):  
Tree Height ◽  
Carya Illinoinensis ◽  
Split Application ◽  
Single Application ◽  
Trunk Diameter ◽  
Leaf N Concentration ◽  
K Concentration ◽  
N Rates ◽  
Leaf P ◽  
Leaf N

`Giles' pecan [Carya illinoinensis (Wangenh.) K. Koch] seedlings were either not mulched or mulched with wood chips arranged in a 1- or 2-m-wide square that was 30 cm deep. Mulch treatments were in factorial combination with two N rates applied as either a single application at budbreak or as a split application at budbreak and 3 weeks later. Tree height was positively related to mulch width each year of the 3-year study, and trunk diameter was positively related to mulch width during the second and third years of the experiment. Leaf P and K concentration during 2 years and leaf N during 1 year of the study were positively related to mulch width. Trees receiving the higher N rate were taller during 2 of 3 years, but leaf N concentration was not affected by N rate. No differences in the parameters measured were observed whether N was applied as a single or as a split application.

scholarly journals Solar radiation effects on leaf nitrogen and phosphorus stoichiometry of Chinese fir across subtropical China

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Ran Tong ◽  
Yini Cao ◽  
Zhihong Zhu ◽  
Chenyang Lou ◽  
Benzhi Zhou ◽  
...  
Keyword(s):  
Forest Ecosystems ◽  
Chinese Fir ◽  
Path Coefficient ◽  
Soil P ◽  
P Concentration ◽  
N Concentration ◽  
P Content ◽  
Leaf N Concentration ◽  
Leaf P ◽  
Leaf N

Abstract Background Solar radiation (SR) plays critical roles in plant physiological processes and ecosystems functions. However, the exploration of SR influences on the biogeochemical cycles of forest ecosystems is still in a slow progress, and has important implications for the understanding of plant adaption strategy under future environmental changes. Herein, this research was aimed to explore the influences of SR on plant nutrient characteristics, and provided theoretical basis for introducing SR into the establishment of biochemical models of forest ecosystems in the future researches. Methods We measured leaf nitrogen (N) and phosphorus (P) stoichiometry in 19 Chinese fir plantations across subtropical China by a field investigation. The direct and indirect effects of SR, including global radiation (Global R), direct radiation (Direct R) and diffuse radiation (Diffuse R) on the leaf N and P stoichiometry were investigated. Results The linear regression analysis showed that leaf N concentration had no association with SR, while leaf P concentration and N:P ratio were negatively and positively related to SR, respectively. Partial least squares path model (PLS-PM) demonstrated that SR (e.g. Direct R and Diffuse R), as a latent variable, exhibited direct correlations with leaf N and P stoichiometry as well as the indirect correlation mediated by soil P content. The direct associations (path coefficient = − 0.518) were markedly greater than indirect associations (path coefficient = − 0.087). The covariance-based structural equation modeling (CB-SEM) indicated that SR had direct effects on leaf P concentration (path coefficient = − 0.481), and weak effects on leaf N concentration. The high SR level elevated two temperature indexes (mean annual temperature, MAT; ≥ 10 °C annual accumulated temperature, ≥ 10 °C AAT) and one hydrological index (mean annual evapotranspiration, MAE), but lowered the soil P content. MAT, MAE and soil P content could affect the leaf P concentration, which cause the indirect effect of SR on leaf P concentration (path coefficient = 0.004). Soil N content had positive effect on the leaf N concentration, which was positively and negatively regulated by MAP and ≥ 10 °C AAT, respectively. Conclusions These results confirmed that SR had negatively direct and indirect impacts on plant nutrient status of Chinese fir based on a regional investigation, and the direct associations were greater than the indirect associations. Such findings shed light on the guideline of taking SR into account for the establishment of global biogeochemical models of forest ecosystems in the future studies.

Sign in / Sign up

Export Citation Format

Share Document