RESPONSE OF CHILE PEPPER (Capsicum annuum L.) TO SALT STRESS AND ORGANIC AND INORGANIC NITROGEN SOURCES: II. NITROGEN AND WATER USE EFFICIENCIES, AND SALT TOLERANCE

Marco Antonio Huez Lopez, April L. Ulery, Zorhab Samani

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

The response to two nitrogen sources on water and nitrogen use efficiencies, and tolerance of salt-stressed chile pepper plants (Capsicum annuumL.) cv. Sandia was investigated in a greenhouse experiment. Low, moderate and high (1.5, 4.5, and 6.5 dS m-1) salinity levels, and two rates of organic-N fertilizer (120 and 200 kg ha-1) and 120 kg ha-1of inorganic fertilizer as ammonium nitrate were arranged in randomized complete block designs replicated four times. The liquid organic-N source was an organic, extracted with water from grass clippings. Water use decreased about 19 and 30% in moderate and high salt-stressed plants. Water use efficiency decreased only in high salt-stressed plants. Nitrogen use efficiency decreased either by increased salinity or increased N rates.An apparent increase in salt tolerance was noted when plants were fertilized with organic-N source compared to that of inorganic-N source.
Original languageSpanish (Mexico)
Pages (from-to)757-763
Number of pages6
JournalTropical and Subtropical Agroecosystems
Volume14
Issue number3
StatePublished - 31 Dec 2011

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