Effect of vermicompost tea on yield and nitrate reductase enzyme activity in saladette tomato

In conventional agriculture, heavy doses of chemical fertilizers and pesticides are often used to improve the yield of various horticultural crops. These chemical fertilizers and pesticides cause health problems among consumers. Due to the adverse effects of chemical fertilizers, there is interest i...

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Autores principales:	Márquez-Quiroz,C, López-Espinosa,S.T, Sánchez-Chávez,E, García-Bañuelos,M.L, De la Cruz-Lázaro,E, Reyes-Carrillo,J.L
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2014
Materias:	Nitrogen metabolism organic fertilizer organic waste quality Solanum lycopersicum L.
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162014000100018
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spelling	oai:scielo:S0718-951620140001000182015-11-12Effect of vermicompost tea on yield and nitrate reductase enzyme activity in saladette tomatoMárquez-Quiroz,CLópez-Espinosa,S.TSánchez-Chávez,EGarcía-Bañuelos,M.LDe la Cruz-Lázaro,EReyes-Carrillo,J.L Nitrogen metabolism organic fertilizer organic waste quality Solanum lycopersicum L. In conventional agriculture, heavy doses of chemical fertilizers and pesticides are often used to improve the yield of various horticultural crops. These chemical fertilizers and pesticides cause health problems among consumers. Due to the adverse effects of chemical fertilizers, there is interest in the use of organic fertilizers. It has long been recognized that the rate-limiting step for nitrogen assimilation, the reduction of NO3- to NO2- catalyzed by nitrate reductase (NR), is highly regulated. An increase in the amount and activity of NR leads to a corresponding increase in the potential for nitrate reduction and confers a greater capacity for general amino-acid synthesis, protein synthesis or total nitrogen assimilation. The aim of the current experiment was to determine the effect of organic and conventional fertilizers on yield and nitrate reductase activity in saladette tomato.Tomato plants were grown under controlled greenhouse conditions and treated with either organic or conventional fertilizer. We evaluated five treatments: F1, sand + inorganic fertilizer; F2, sand + vermicompost tea; F3, a 1:1 mixture of sand: compost + vermicompost tea; F4, a 1:1 mixture of sand: vermicompost + vermicompost tea; and F5, a 2:1:1 mixture of sand: compost: vermicompost + vermicompost tea. The evaluated variables were yield, fruit size, number of fruits, fruit quality, chlorophyll content, and in vivo nitrate reductase enzyme activity. Fertilizer type strongly influenced the yield, fruit size, and fruit quality. The best organic fertilizer for tomatoes was sand + vermicompost tea. Tomatoes in this treatment group produced the second highest yield, the best NO3- assimilation, the greatest nitrate reductase enzyme activity, and the second highest organic foliar nitrogen content.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.14 n.1 20142014-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162014000100018en10.4067/S0718-95162014005000018
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Nitrogen metabolism organic fertilizer organic waste quality Solanum lycopersicum L.
spellingShingle	Nitrogen metabolism organic fertilizer organic waste quality Solanum lycopersicum L. Márquez-Quiroz,C López-Espinosa,S.T Sánchez-Chávez,E García-Bañuelos,M.L De la Cruz-Lázaro,E Reyes-Carrillo,J.L Effect of vermicompost tea on yield and nitrate reductase enzyme activity in saladette tomato
description	In conventional agriculture, heavy doses of chemical fertilizers and pesticides are often used to improve the yield of various horticultural crops. These chemical fertilizers and pesticides cause health problems among consumers. Due to the adverse effects of chemical fertilizers, there is interest in the use of organic fertilizers. It has long been recognized that the rate-limiting step for nitrogen assimilation, the reduction of NO3- to NO2- catalyzed by nitrate reductase (NR), is highly regulated. An increase in the amount and activity of NR leads to a corresponding increase in the potential for nitrate reduction and confers a greater capacity for general amino-acid synthesis, protein synthesis or total nitrogen assimilation. The aim of the current experiment was to determine the effect of organic and conventional fertilizers on yield and nitrate reductase activity in saladette tomato.Tomato plants were grown under controlled greenhouse conditions and treated with either organic or conventional fertilizer. We evaluated five treatments: F1, sand + inorganic fertilizer; F2, sand + vermicompost tea; F3, a 1:1 mixture of sand: compost + vermicompost tea; F4, a 1:1 mixture of sand: vermicompost + vermicompost tea; and F5, a 2:1:1 mixture of sand: compost: vermicompost + vermicompost tea. The evaluated variables were yield, fruit size, number of fruits, fruit quality, chlorophyll content, and in vivo nitrate reductase enzyme activity. Fertilizer type strongly influenced the yield, fruit size, and fruit quality. The best organic fertilizer for tomatoes was sand + vermicompost tea. Tomatoes in this treatment group produced the second highest yield, the best NO3- assimilation, the greatest nitrate reductase enzyme activity, and the second highest organic foliar nitrogen content.
author	Márquez-Quiroz,C López-Espinosa,S.T Sánchez-Chávez,E García-Bañuelos,M.L De la Cruz-Lázaro,E Reyes-Carrillo,J.L
author_facet	Márquez-Quiroz,C López-Espinosa,S.T Sánchez-Chávez,E García-Bañuelos,M.L De la Cruz-Lázaro,E Reyes-Carrillo,J.L
author_sort	Márquez-Quiroz,C
title	Effect of vermicompost tea on yield and nitrate reductase enzyme activity in saladette tomato
title_short	Effect of vermicompost tea on yield and nitrate reductase enzyme activity in saladette tomato
title_full	Effect of vermicompost tea on yield and nitrate reductase enzyme activity in saladette tomato
title_fullStr	Effect of vermicompost tea on yield and nitrate reductase enzyme activity in saladette tomato
title_full_unstemmed	Effect of vermicompost tea on yield and nitrate reductase enzyme activity in saladette tomato
title_sort	effect of vermicompost tea on yield and nitrate reductase enzyme activity in saladette tomato
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162014000100018
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Effect of vermicompost tea on yield and nitrate reductase enzyme activity in saladette tomato

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