Seasonal Dynamics of Nitrogen, Phosphorus, and Potassium Contents of Leaf and Soil in Environmental Friendly Apple Orchards

Holb, I. J.; Gonda, I.; Vágó, Imre; Nagy, Péter Tamás

doi:10.1080/00103620802693359

Cited by 15 publications

(11 citation statements)

References 12 publications

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“…Thus, an increase in potassium rate can lead to a specific decrease in nitrogen in plant leaves. Holb et al [ 4 ] observed such phenomena in the field when leaf nitrogen status decreased with increasing potassium rate. In sand culture, the nitrogen concentration in leaves of 6-year-old plants Gala/M26 decreased because of high potassium rates [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Correction of Potassium Fertigation Rate of Apple Tree (Malus domestica Borkh.) in Central Russia during the Growing Season

Кузин

Kashirskaya

Kochkina

et al. 2020

Plants

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The proper use of potassium fertilizer can stimulate a significant yield increase. However, the application of excessively high rates of potassium can reduce the availability of soil calcium for apple trees. The potassium fertigation rate must meet the apple tree’s requirements so that the applied fertilizers can be absorbed by the roots as much as possible. Crop load in apple orchards sometimes varies significantly in different years. The potassium content in apple fruits is relatively high, and the maximum requirement for this nutrient occurs when fruits grow and ripen. Different crop loads at that time mean the various demands of trees and need for changing application rates for this nutrient. The investigation was carried out in the experimental orchard of I.V. Michurin Federal Scientific Centre (Michurinsk, Russia) in 2016 and 2017 (52.885131, 40.465613). We studied seasonal changes of potassium and calcium contents in soil, fruits, and leaves and their relationship with yield during the research. We paid much attention to the potassium rate shift on its content in leaves and fruits and cultivars “Lobo” and “Zhigulevskoye” yield. If the potassium application rate changes according to the actual crop load, it stimulates the yield growth or (if the crop load was relatively low) the reduction of the rate did not lower the productivity. Moreover, we studied the relationship between potassium and calcium nutrition. The decrease in potassium fertigation rate increased the availability of soil calcium. It was the reason for fruit calcium concentration enlargement and mitigation of the K/Ca ratio. We also specified some parameters for soil–leaf diagnosis for potassium nutrition during the growing season.

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Section: Introductionmentioning

confidence: 99%

Correction of Potassium Fertigation Rate of Apple Tree (Malus domestica Borkh.) in Central Russia during the Growing Season

Кузин

Kashirskaya

Kochkina

et al. 2020

Plants

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“…It is recommended to thin at stage I because it encourages cell division and expansion and leads to larger fruit size (Westwood et al, 1967). Also, foliar fertilization can play important role in improving fruit quality by providing nutrients during a critical phase of restricted nutrient supply (Veberič et al, 2002b;Holb et al, 2009). The efficiency of foliar applied nutrients and their utilization is strongly depended on the demand of a tree in the given phenological state and that is nutrient specific (Weinbaum et al, 2002).From these elements, potassium which transports sugars from leaves to fruits so, it is very important during the fruit growth period (Weinbaum et al 1994).…”

Section: Introductionmentioning

confidence: 99%

Treatments for improving tree growth, yield and fruit quality and for reducing double fruit and deep suture incidence in “Desert red” peach trees

Zayan¹,

Mikhael

Okba

2016

Int. j. hortic. sci.

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Five years old “Desert red” peach trees budded on Nemaguard rootstock and grown in sandy soil at commercial orchard Al-Nubaria city, El-Behira Governorate-Egypt were treated with some agricultural treatments involving thinning out pruning, fruit thinning and foliar application of potassium silicate (25% S +10% K2O) at 0.1% and super grow (20% N, 20% P2O5 and 20% K2O) at 0.3% in 2014 and 2015 seasons, to study their effects on yield and fruit quality and the relationship between nutrient balance and yield of “Desert red” peach trees. Beside, testing the influence of used treatments on two physiological disorder, double fruit and deep suture %. Also, economic evaluation of different treatments was done. All obtained data were statistically analyzed using a randomized complete block design. Depending on the obtained results in this study, it could be concluded that application of thinning out pruning 35%, fruit thinning by leaving 15 cm between fruits on one-year old shoot at 20 days after full bloom and foliar application of potassium silicate which sprayed five times during each growing season at fruit set, the second fruit development stage, the beginning of the fruit color change and twice after month from harvest, most profitable treatment for peach trees grown under conditions of this investigation. This treatment gave the best vegetative growth, yield, fruit quality, higher crop value with high net income /fed. from “Desert red” peach trees, in addition, reduced the percentage of double fruit and deep suture by more than 50% in both seasons, therefore, the study recommends this treatment for “Desert red” peach growers.

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“…Nutrient content in apple leaves is a feature of a specific cultivar; it is influenced, within certain limits, by the rootstocks (Ponchia et al 1997), by soil and climatic conditions (Wehunt, Purvis 1954;Blažek, Hlušičková 2007), by the phase of vegetation (Sadowski et al 1995;Weinbaum et al 2001;Holb et al 2009), and particularly by the orchard management practices, i.e. irrigation and fertilization (Hipps 1997;Nagy, Holb 2006).…”

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confidence: 99%

Relationship between tree nutritional status and apple quality

Jivan

Sala

2014

Hortic. Sci.

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Jivan C., Sala F., 2014. Relationship between tree nutritional status and apple quality. Hort. Sci. (Prague), 41: 1-9.Development of prediction models for the quality of apples is useful in guiding fruit tree nutrition and in optimising fruit management. The interrelationships between the leaf nutrient contents and some fruit quality indices were studied in five apple cultivars -Generos, Florina, Delicios de Voinesti, Jonathan and Pionier. Highly significant relationships between N and Fe contents (R 2 = 0.734; P < 0.01) and between Cu and K (R 2 = 0.702; P < 0.01) were found. Acidity was negatively correlated with soluble solids content in the cvs Generos, Delicios de Voinesti and Jonathan, whereas the respective correlation in the apple cv. Pionier was positive. In cv. Florina fruits no significant correlation was found between acidity and soluble solids content. Among macroelements, nitrogen had a considerable contribution to fruit acidity and this allows to predict this index with a high degree of safety (R 2 = 0.690; RMSEP N = 0.105). Microelements have a lower contribution to acidity and a higher one to the sugar accumulation; in case of Zn are R 2 = 0.809; RMSEP Zn = 4.250.

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Seasonal Dynamics of Nitrogen, Phosphorus, and Potassium Contents of Leaf and Soil in Environmental Friendly Apple Orchards

Cited by 15 publications

References 12 publications

Correction of Potassium Fertigation Rate of Apple Tree (Malus domestica Borkh.) in Central Russia during the Growing Season

Correction of Potassium Fertigation Rate of Apple Tree (Malus domestica Borkh.) in Central Russia during the Growing Season

Treatments for improving tree growth, yield and fruit quality and for reducing double fruit and deep suture incidence in “Desert red” peach trees

Relationship between tree nutritional status and apple quality

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