Castor seed yield at suboptimal soil moisture: Is it high enough?

Abstract This study discusses how soil moisture influences the seed yield of two castor plant varieties in an arid zone in Mexico. An experiment was set up with two factors: soil moisture, with three levels (high = -0.05 MPa, medium = -0.31 MPa and low = -0.91 MPa), and castor variety (Krishna and R...

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Autores principales:	Buendía-Tamariz,Mali N., Trejo-Calzada,Ricardo, Sánchez-Cohen,Ignacio, Flores-Hernández,Arnoldo, Velásquez-Valle,Miguel A., Pedroza-Sandoval,Aurelio
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal 2019
Materias:	Plant growth Ricinus communis L. seed yield source-sink relationships supplementary irrigation
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202019000300253
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spelling	oai:scielo:S0718-162020190003002532020-01-16Castor seed yield at suboptimal soil moisture: Is it high enough?Buendía-Tamariz,Mali N.Trejo-Calzada,RicardoSánchez-Cohen,IgnacioFlores-Hernández,ArnoldoVelásquez-Valle,Miguel A.Pedroza-Sandoval,Aurelio Plant growth Ricinus communis L. seed yield source-sink relationships supplementary irrigation Abstract This study discusses how soil moisture influences the seed yield of two castor plant varieties in an arid zone in Mexico. An experiment was set up with two factors: soil moisture, with three levels (high = -0.05 MPa, medium = -0.31 MPa and low = -0.91 MPa), and castor variety (Krishna and Rincon). The combination resulted in a factorial 3 × 2 experimental design. The experiment was set up as a randomized block with four replications under a split-plot arrangement, where the whole plots were for soil moisture and the subplots were for the castor variety. The measured variables were plant height (PH), days to flowering of 50% of the plants (DF), leaf area (LA), dry weight (DW), source-sink relationship, harvest index (HI) and seed yield. Data were analyzed by ANOVA, mean tests (HSD at α = 0.05) and regression analysis. There were significant differences in PH, LA, DW, HI and yield among the treatments. The values of PH, LA and DW tended to be higher at higher soil moisture levels than at lower moisture levels. The source strength was generally lower than the sink strength in all the treatments. There were significant differences between the varieties for HI, and the interaction between soil moisture and variety was also significant. Significant differences were found in yield; the Krishna variety had a greater yield than the Rincon variety, but there was only a significant difference between the yield of the Krishna variety cultivated under low soil moisture (5200 kg ha-1) and that of the Rincon variety cultivated under high soil moisture (2570 kg ha-1). The results of this study indicate that castor plants can be cultivated in arid regions at suboptimal soil moisture levels with supplementary irrigation without compromising plant performance or yield.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.46 n.3 20192019-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202019000300253en10.7764/rcia.v46i3.2046
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Plant growth Ricinus communis L. seed yield source-sink relationships supplementary irrigation
spellingShingle	Plant growth Ricinus communis L. seed yield source-sink relationships supplementary irrigation Buendía-Tamariz,Mali N. Trejo-Calzada,Ricardo Sánchez-Cohen,Ignacio Flores-Hernández,Arnoldo Velásquez-Valle,Miguel A. Pedroza-Sandoval,Aurelio Castor seed yield at suboptimal soil moisture: Is it high enough?
description	Abstract This study discusses how soil moisture influences the seed yield of two castor plant varieties in an arid zone in Mexico. An experiment was set up with two factors: soil moisture, with three levels (high = -0.05 MPa, medium = -0.31 MPa and low = -0.91 MPa), and castor variety (Krishna and Rincon). The combination resulted in a factorial 3 × 2 experimental design. The experiment was set up as a randomized block with four replications under a split-plot arrangement, where the whole plots were for soil moisture and the subplots were for the castor variety. The measured variables were plant height (PH), days to flowering of 50% of the plants (DF), leaf area (LA), dry weight (DW), source-sink relationship, harvest index (HI) and seed yield. Data were analyzed by ANOVA, mean tests (HSD at α = 0.05) and regression analysis. There were significant differences in PH, LA, DW, HI and yield among the treatments. The values of PH, LA and DW tended to be higher at higher soil moisture levels than at lower moisture levels. The source strength was generally lower than the sink strength in all the treatments. There were significant differences between the varieties for HI, and the interaction between soil moisture and variety was also significant. Significant differences were found in yield; the Krishna variety had a greater yield than the Rincon variety, but there was only a significant difference between the yield of the Krishna variety cultivated under low soil moisture (5200 kg ha-1) and that of the Rincon variety cultivated under high soil moisture (2570 kg ha-1). The results of this study indicate that castor plants can be cultivated in arid regions at suboptimal soil moisture levels with supplementary irrigation without compromising plant performance or yield.
author	Buendía-Tamariz,Mali N. Trejo-Calzada,Ricardo Sánchez-Cohen,Ignacio Flores-Hernández,Arnoldo Velásquez-Valle,Miguel A. Pedroza-Sandoval,Aurelio
author_facet	Buendía-Tamariz,Mali N. Trejo-Calzada,Ricardo Sánchez-Cohen,Ignacio Flores-Hernández,Arnoldo Velásquez-Valle,Miguel A. Pedroza-Sandoval,Aurelio
author_sort	Buendía-Tamariz,Mali N.
title	Castor seed yield at suboptimal soil moisture: Is it high enough?
title_short	Castor seed yield at suboptimal soil moisture: Is it high enough?
title_full	Castor seed yield at suboptimal soil moisture: Is it high enough?
title_fullStr	Castor seed yield at suboptimal soil moisture: Is it high enough?
title_full_unstemmed	Castor seed yield at suboptimal soil moisture: Is it high enough?
title_sort	castor seed yield at suboptimal soil moisture: is it high enough?
publisher	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202019000300253
work_keys_str_mv	AT buendiatamarizmalin castorseedyieldatsuboptimalsoilmoistureisithighenough AT trejocalzadaricardo castorseedyieldatsuboptimalsoilmoistureisithighenough AT sanchezcohenignacio castorseedyieldatsuboptimalsoilmoistureisithighenough AT floreshernandezarnoldo castorseedyieldatsuboptimalsoilmoistureisithighenough AT velasquezvallemiguela castorseedyieldatsuboptimalsoilmoistureisithighenough AT pedrozasandovalaurelio castorseedyieldatsuboptimalsoilmoistureisithighenough
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Castor seed yield at suboptimal soil moisture: Is it high enough?

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