The Effect of NPK on the Growth, Yield and Quality of the Appricot Fruit

Dimitrovski, Trajche; Cevetkovic, D.

doi:10.17660/actahortic.1981.85.11

Cited by 10 publications

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“…In our study, T 3 significantly decreased SSC, TS and TA. These results were supported and in lined with the literature, because the set of fruit quality traits in our study was the best when applied fertilizer containing K originated from composite NPK (Dimitrovski andCvetkovic 1981, Bussi et al 2003). Also, the soil in our trial is an important resource of available K. Additionally, our range of all above values is in accordance with the findings of Rahović (2003).…”

Section: Resultssupporting

confidence: 91%

“…The optimal amount and modern management practice guarantee high yield and quality products and minimize possible negative effects. Studies on the effects of K and P alone or as NPK compounds on apricot tree growth, yield and fruit quality were not investigated enough (Dimitrovski andCevetkovic 1981, Huguet 1988). Most of the works done on this subject was focused on N fertilization (Crisosto et al 1997, Asma et al 2007.…”

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confidence: 99%

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Response of young apricot trees to natural zeolite, organic and inorganic fertilizers

Milošević¹,

Milošević²

2013

PLANT SOIL ENVIRON

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The study focused on characterizing five apricot cultivars to acknowledge the impact of natural zeolite (Agrozel type), cattle manure, composite NPK (15-15-15) and calcium ammonium nitrate (CAN) on tree vigour, precocity, yield performance and fruit quality attributes. The results showed that Agrozel induced the highest tree growth in all cultivars, yield and cumulative yield in Vera, Harcot and Roxana and yield efficiency in Aleksandar, Vera and Roxana. The higher fruit weight of all cultivars was found after the manure application. Composite NPK plays a major role in soluble solids, total sugars and titratable acidity accumulation, whereas CAN and Agrozel applications resulted in a higher soluble solids/titratable acidity ratio and flesh firmness in most of the cultivars.

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Section: Resultssupporting

confidence: 91%

mentioning

confidence: 99%

Response of young apricot trees to natural zeolite, organic and inorganic fertilizers

Milošević¹,

Milošević²

2013

PLANT SOIL ENVIRON

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“…Possible reasons for this result could be advanced: (i) firstly, the factor levels of P choice in these experiments (used in the Société de Développement Agricole orchard) were not very significant to influence responses; (ii) secondly, P was not absorbed by the apricot trees in significant quantities, unlike N and K. Nevertheless, this result was not surprising. P fertilization has been reported to act essentially on vegetative growth [9]. The same result was also observed in some fruit species [29,30].…”

Section: Discussionsupporting

confidence: 66%

“…Only a few studies have been devoted to the impact of different levels of mineral fertilization on the quality of apricot fruit. Different works have reported the effect of mineral fertilization on the growth and fruit yield of apricot [9,12,16,17,21,34,38]. Different N fertilization periods have also been tested [17,34].…”

Section: Introductionmentioning

confidence: 99%

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Influence of mineral fertilization (NPK) on the quality of apricot fruit (cv. Canino). The effect of the mode of nitrogen supply

et al. 2003

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International audienceAbstract - The effects of different levels of nitrogen, phosphorus and potassium (NPK) fertilizers were evaluated on biochemical markers involved in the quality of apricots (sugars, organic acids and free acidity) and technological qualities (phenolic compounds: substrates of the enzymatic browning reaction). Apricot fruits (cv. Canino) were picked in the Marrakech area (Morocco). An experimental design was carried out with four factors: N, P and K, each one at two levels, and two modes of N supply. The weight of fruits, refractometric index and free acidity were measured in apricots at the commercial maturity stage. The main phenolic compounds, sugars and organic acids were identified and their concentrations were determined using high performance liquid chromatography (HPLC). Apricot fruits from trees fertilized with 80 kg N ha$^{-1}$ showed a significantly higher content in phenolic compounds, a slightly higher sugar concentration and a lower organic acid concentration than those fertilized with 150 kg N ha$^{-1}$. In this latter case, the weight of fruits was higher. In contrast, fertilization with the lowest K level (60 kg ha$^{-1}$) resulted in lower concentrations in phenolic compounds and sugar content when compared with the fruits which received the highest K level (120 kg ha$^{-1}$). Our results showed that P fertilization is not the main factor in the technological qualities of apricot fruits expressed as phenolic content. The mode of N supply seemed to play a major role in the quality of apricot fruits. The second application resulted in a higher accumulation of phenolic compounds and an increase in fruit weight, while the first application tended to stimulate the biosynthesis of organic acids. In addition, our results showed great interactions between N, P and K fertilization. The N-K interaction was found to be the most significant one for all the biochemical markers studied in this work.Influence de la fertilisation minérale (NPK) sur la qualité de l'Abricot (cv. Canino). Effet du mode de fractionnement d'azote. La qualité de l'abricot, destiné notamment à subir une transformation industrielle, est fortement liée à la teneur en certains composés tels les polyphénols, principaux marqueurs de notre étude, les sucres et les acides organiques. À cet effet l'objectif du présent travail consiste à étudier l'incidence de la fertilisation minérale sur l'évolution de ces réponses dites de qualité. Cette étude a été menée dans le verger expérimental de la Société de Développement Agricole situé au sud de Marrakech (Maroc). Un plan d'expériences avec quatre facteurs : azote, phosphore et potassium, chacun avec deux niveaux, et deux modes de fractionnement d'azote (avec 1/3 d'N au mois de février et 2/3 au mois d'avril ou 2/3 d'N au mois de février et 1/3 au mois d'avril) a été mis en place. Le poids moyen du fruit, l'indice réfractométrique et l'acidité libre ont été mesurés dans les abricots récoltés à maturité commerciale. De même, les composés phénoliques, les sucres et acides organiq...

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Tree growth, yield, fruit quality attributes and leaf nutrient content of ‘Roxana’ apricot as influenced by natural zeolite, organic and inorganic fertilisers

Milošević

Glišić

2013

Scientia Horticulturae

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The Effect of NPK on the Growth, Yield and Quality of the Appricot Fruit

Cited by 10 publications

References 0 publications

Response of young apricot trees to natural zeolite, organic and inorganic fertilizers

Response of young apricot trees to natural zeolite, organic and inorganic fertilizers

Influence of mineral fertilization (NPK) on the quality of apricot fruit (cv. Canino). The effect of the mode of nitrogen supply

Tree growth, yield, fruit quality attributes and leaf nutrient content of ‘Roxana’ apricot as influenced by natural zeolite, organic and inorganic fertilisers

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