Potassium fertilization effects on quality, economics, and yield in a pear orchard

Sete, Paula Beatriz; Ciotta, Marlise Nara; Nava, Gilberto; Silva, Lincon Oliveira Stefanello da; Brackmann, Auri; Berghetti, Magno Roberto Pasquetti; Cadoná, Eliana Aparecida; Brunetto, Gustavo

doi:10.1002/agj2.20235

Cited by 2 publications

(1 citation statement)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Насадження груші забирає з ґрунту більше елементів живлення, особливо калію, від якого залежить якість генеративних бруньок, розміри плодів, їх колір та смак [8]. Це підтверджується дослідженнями, проведеними в різних ґрунтово-кліматичних умовах [9][10][11].…”

Section: уманський національний університет садівництваunclassified

Productivity and economic efciency of pear-tree plantations under optimized ferilization

ЯКОВЕНКО

2021

Agrobìologìâ

View full text Add to dashboard Cite

Modern technologies of cultivation of seed crops plantations imply high efciency of fruit production while optimizing mineral nutrition of trees. The aim of the research is to increase fruit yield and economic efciency under optimized fertilization of pear trees in a re-growing rain-fed plantation. The results of the research, carried out to study the effect of optimized fertilization on yield capacity, fruit quality and economic efciency of replant pear-tree cultivation, cultivars Conference and Osnovianska (on vegetative rootstock quince A) in different age periods of growth and fruiting, were considered. Based on the results of agro-chemical analyses, the rates of nitrogen and potassium fertilizers were calculated in the way to compensate the lack of N–NO3 (by a nitrifcation ability of the soil) and forms of K2O, available for plant nutrition, and to make their content equal to optimal levels, scientifcally established for apple-tree and recommended for pear-tree plantations. It was found out that the highest yield capacity of the studied pear-trees was recorded with additional application of nitrogen and nitrogen-potassium fertilizers (background+N30, background+N30K30); it was higher by 27.2 and 36.7, 29.8 and 36.1 %, respectively, as compared with the yield capacity of unfertilized trees, and it was higher by 0.6 and 2.6, 4.7 and 4.2 % for the fertilized trees with the annual application of N90 P60K90 (production control); there the correlation of nitrogen, phosphorus and potassium of plant nutrition was less balanced, the total amount of fertilizers was larger though. Fertilization is a leading factor in the formation of the proftability of pear-tree agrocenosis. The use of various cultivars and practices to apply fertilizers in pear-tree plantations has an impact on the economic indicators of fruit production in diﬀerent age periods of growth and fruiting. Key words: pear-tree, varieties, fertilization, yield capacity, marketable quality, revenue, proftability.

show abstract

Section: уманський національний університет садівництваunclassified

Productivity and economic efciency of pear-tree plantations under optimized ferilization

ЯКОВЕНКО

2021

Agrobìologìâ

View full text Add to dashboard Cite

show abstract

The Features of Potassium Dynamics in ‘Soil–Plant’ System of Sour Cherry Orchard

Roeva,

Leonicheva,

Leonteva

et al. 2023

Plants

View full text Add to dashboard Cite

This research aimed to study interannual and seasonal dynamics of different potassium compounds in orchard soil and the potassium status of sour cherry trees affected by the application of nitrogen and potash fertilizers. Afield experiment was started in 2017 at an orchard located in the forest-steppe zone of the Central Russian upland. Urea and potassium sulfate were applied to the soil once a year in early spring with rates from N30K40 to N120K160 kg/ha. The content of exchangeable and water-soluble potassium compounds was determined in soil samples five times throughout the growing season from May to September 2018–2020. The content of non-exchangeable potassium was determined twice, in 2017 and 2020. The interannual and seasonal dynamics of plant-available potash in unfertilized soil depended on the weather patterns and the uptake of potassium by trees. In the unfertilized plots, the first signs of potassium nutrition insufficiency appeared, such as low leaf and fruit potassium status and a decrease in the non-exchangeable potassium reserves in the20–40 cm soil layer. The annual fertilization led to the gradual accumulation of exchangeable potassium in the root zone. The accumulation was accelerated with increasing rates. When the exchangeable potassium level in the topsoil reached 200 mg/kg, the intensification of both the seasonal fluctuations in potash content and the potash leaching into the depths of the soil occurred in all treatments. In the conditions of our experiment, one-time treatments with superfluous potassium rates (over 80 kg/ha) did not provide an enlarged stock of plant-available potash in the soil but caused unreasonable losses of it due to leaching. An increase in fertilizer rates was not essential for normal metabolic processes and did not manifest itself as an increase in potassium content in leaves and fruits or as an increase in yield.

show abstract

Potassium fertilization effects on quality, economics, and yield in a pear orchard

Cited by 2 publications

References 26 publications

Productivity and economic efciency of pear-tree plantations under optimized ferilization

Productivity and economic efciency of pear-tree plantations under optimized ferilization

The Features of Potassium Dynamics in ‘Soil–Plant’ System of Sour Cherry Orchard

Contact Info

Product

Resources

About