Articles
¿BONUS-NPK¿ – HIGHLY CONCENTRATED, ENRICHED POTASSIUM NITRATE, AN OPTIMAL BOOSTER FOR YIELD AND QUALITY OF CITRUS FRUITS
Article number
594_59
Pages
461 – 466
Language
English
Abstract
Bonus-npK is a new fully soluble, crystalline formulation of potassium nitrate that has been specifically developed for foliar feeding of a large variety of crops.
It is sprayed at concentrations of up to 10% for intensive foliar nutrition and for a prolonged effect, without any phytotoxic effects.
Bonus-npK is potassium nitrate enriched with soluble phosphates and a special adjuvant.
The moderately acidic pH (4.5-6.0) of the spray solution enables tank-mixing it with numerous pesticides.
Foliar feeding with Bonus-npK has achieved the following results in citrus crops: in Shamouti (Jaffa) oranges a single application of 9-10% (w/v) Bonus-npK, when fruits were 18-22 mm in diameter, increased percentage of fruit above 75 mm in diameter by 75%, consequently, total yield increased by 14 ton ha-1. Foliar K in dry matter (D.M.) increased by 0.47%. Shelf life of stored fruit was also significantly enhanced due to a marked increase in potassium content of the rind by 0.44% (in D.M.). In Newhol navel orange (Citrus sinensis Osb.), a single application of a 10% solution significantly increased total yield by 19%, fruit above 75 mm in diameter increased by 28%, foliar K in D.M. increased by 0.33%. In Nova tangerine (Citrus reticulate Bla.), a single application of a 10% solution significantly increased total yield by 30%, mean fruit weight by 38.3 g and reduced the incidence of rind creasing by 20%. These results verify that Bonus-npK is an ideal preparation for intensive potassic feeding that considerably increases total yield, primarily by increasing the size of individual fruit units.
Bonus-npK provides its maximum benefit to the grower when the market pays high premiums for larger fruit units.
It is sprayed at concentrations of up to 10% for intensive foliar nutrition and for a prolonged effect, without any phytotoxic effects.
Bonus-npK is potassium nitrate enriched with soluble phosphates and a special adjuvant.
The moderately acidic pH (4.5-6.0) of the spray solution enables tank-mixing it with numerous pesticides.
Foliar feeding with Bonus-npK has achieved the following results in citrus crops: in Shamouti (Jaffa) oranges a single application of 9-10% (w/v) Bonus-npK, when fruits were 18-22 mm in diameter, increased percentage of fruit above 75 mm in diameter by 75%, consequently, total yield increased by 14 ton ha-1. Foliar K in dry matter (D.M.) increased by 0.47%. Shelf life of stored fruit was also significantly enhanced due to a marked increase in potassium content of the rind by 0.44% (in D.M.). In Newhol navel orange (Citrus sinensis Osb.), a single application of a 10% solution significantly increased total yield by 19%, fruit above 75 mm in diameter increased by 28%, foliar K in D.M. increased by 0.33%. In Nova tangerine (Citrus reticulate Bla.), a single application of a 10% solution significantly increased total yield by 30%, mean fruit weight by 38.3 g and reduced the incidence of rind creasing by 20%. These results verify that Bonus-npK is an ideal preparation for intensive potassic feeding that considerably increases total yield, primarily by increasing the size of individual fruit units.
Bonus-npK provides its maximum benefit to the grower when the market pays high premiums for larger fruit units.
Authors
O. Achilea, Y. Soffer, D. Raber, M. Tamim
Keywords
Citrus, foliar feeding, fruit-quality, fruit-size, potassium nitrate, yield
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