Physiology of Paluma guava plants fertilized with potassium and calcium

ABSTRACT Guava is a perennial fruit, highly preferred by the Brazilian consumer and in increasing commercial exploitation in almost all the national territory. The most required nutrients are nitrogen, followed by potassium and calcium with great participation in the growth and physiology of guava....

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Autores principales:	Pereira Cavalcante,Alian Cássio, Ferreira Cavalcante,Lourival, Guilherme Cavalcante,Adailza, Pereira Bertino,Antonio Michael, Pereira Bertino,Antonio Missiemario, Ferreira,Nubia Marisa
Lenguaje:	English
Publicado:	Universidad de Tarapacá. Facultad de Ciencias Agronómicas 2018
Materias:	Psidium guajava chlorophyll physiological aspects
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292018000200163
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spelling	oai:scielo:S0718-342920180002001632019-04-04Physiology of Paluma guava plants fertilized with potassium and calciumPereira Cavalcante,Alian CássioFerreira Cavalcante,LourivalGuilherme Cavalcante,AdailzaPereira Bertino,Antonio MichaelPereira Bertino,Antonio MissiemarioFerreira,Nubia Marisa Psidium guajava chlorophyll physiological aspects ABSTRACT Guava is a perennial fruit, highly preferred by the Brazilian consumer and in increasing commercial exploitation in almost all the national territory. The most required nutrients are nitrogen, followed by potassium and calcium with great participation in the growth and physiology of guava. The objective of this study was to evaluate the effects of potassium doses in the soil without and with calcium in the physiology of Paluma guava plants. The experiment was carried out in a randomized complete block design in a 5 × 2 factorial arrangement, with K2O of 0, 45, 90, 135 and 180 g plant-1 year-1, without and with 120 g plant-1 year-1 calcium from calcium nitrate. The variables analyzed were chlorophyll indices (a, b and total), chlorophyll fluorescence and gas exchange. The results were submitted to analysis of variance by the “F” test and the potassium doses were submitted to regression analysis, using SAS© software version 9.3. Guava plants fertilized with only potassium in the soil had higher photosynthetic rate, water use efficiency and instantaneous carboxylation efficiency. The addition of calcium and potassium to the soil increased chlorophyll a, b, total, variable fluorescence, maximum fluorescence, quantum efficiency, stomatal conductance, transpiration rate and internal carbon concentration in guava.info:eu-repo/semantics/openAccessUniversidad de Tarapacá. Facultad de Ciencias AgronómicasIdesia (Arica) v.36 n.2 20182018-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292018000200163en10.4067/S0718-34292018005000503
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Psidium guajava chlorophyll physiological aspects
spellingShingle	Psidium guajava chlorophyll physiological aspects Pereira Cavalcante,Alian Cássio Ferreira Cavalcante,Lourival Guilherme Cavalcante,Adailza Pereira Bertino,Antonio Michael Pereira Bertino,Antonio Missiemario Ferreira,Nubia Marisa Physiology of Paluma guava plants fertilized with potassium and calcium
description	ABSTRACT Guava is a perennial fruit, highly preferred by the Brazilian consumer and in increasing commercial exploitation in almost all the national territory. The most required nutrients are nitrogen, followed by potassium and calcium with great participation in the growth and physiology of guava. The objective of this study was to evaluate the effects of potassium doses in the soil without and with calcium in the physiology of Paluma guava plants. The experiment was carried out in a randomized complete block design in a 5 × 2 factorial arrangement, with K2O of 0, 45, 90, 135 and 180 g plant-1 year-1, without and with 120 g plant-1 year-1 calcium from calcium nitrate. The variables analyzed were chlorophyll indices (a, b and total), chlorophyll fluorescence and gas exchange. The results were submitted to analysis of variance by the “F” test and the potassium doses were submitted to regression analysis, using SAS© software version 9.3. Guava plants fertilized with only potassium in the soil had higher photosynthetic rate, water use efficiency and instantaneous carboxylation efficiency. The addition of calcium and potassium to the soil increased chlorophyll a, b, total, variable fluorescence, maximum fluorescence, quantum efficiency, stomatal conductance, transpiration rate and internal carbon concentration in guava.
author	Pereira Cavalcante,Alian Cássio Ferreira Cavalcante,Lourival Guilherme Cavalcante,Adailza Pereira Bertino,Antonio Michael Pereira Bertino,Antonio Missiemario Ferreira,Nubia Marisa
author_facet	Pereira Cavalcante,Alian Cássio Ferreira Cavalcante,Lourival Guilherme Cavalcante,Adailza Pereira Bertino,Antonio Michael Pereira Bertino,Antonio Missiemario Ferreira,Nubia Marisa
author_sort	Pereira Cavalcante,Alian Cássio
title	Physiology of Paluma guava plants fertilized with potassium and calcium
title_short	Physiology of Paluma guava plants fertilized with potassium and calcium
title_full	Physiology of Paluma guava plants fertilized with potassium and calcium
title_fullStr	Physiology of Paluma guava plants fertilized with potassium and calcium
title_full_unstemmed	Physiology of Paluma guava plants fertilized with potassium and calcium
title_sort	physiology of paluma guava plants fertilized with potassium and calcium
publisher	Universidad de Tarapacá. Facultad de Ciencias Agronómicas
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292018000200163
work_keys_str_mv	AT pereiracavalcantealiancassio physiologyofpalumaguavaplantsfertilizedwithpotassiumandcalcium AT ferreiracavalcantelourival physiologyofpalumaguavaplantsfertilizedwithpotassiumandcalcium AT guilhermecavalcanteadailza physiologyofpalumaguavaplantsfertilizedwithpotassiumandcalcium AT pereirabertinoantoniomichael physiologyofpalumaguavaplantsfertilizedwithpotassiumandcalcium AT pereirabertinoantoniomissiemario physiologyofpalumaguavaplantsfertilizedwithpotassiumandcalcium AT ferreiranubiamarisa physiologyofpalumaguavaplantsfertilizedwithpotassiumandcalcium
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Physiology of Paluma guava plants fertilized with potassium and calcium

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