Abstract

TORRES BOJORQUEZ, Ariana Isabel et al. Foliar iron and plastic mulch in Capsicum chinense Jacq. infected with tospoviruses. Rev. Mex. Cienc. Agríc [online]. 2017, vol.8, n.2, pp.369-380. ISSN 2007-0934.  https://doi.org/10.29312/remexca.v8i2.57.

Of the diseases that affect mainly the habanero pepper are those caused by tospoviruses, which can completely reduce its yield. During the year 2013, an experiment was carried out with two varieties of habanero pepper (one infected and one not infected with tospoviruses), with the objective of evaluating the application of iron in foliar form and the plastic padding on the performance, index SPAD and NO3 - in the petiole cell extract (ECP). The treatments were distributed under a factorial design 2*2*4 (two varieties, one infected with tospoviruses and another healthy, with or without application of foliar iron, and four colors of plastic mulch). The results showed that the infection of the variety and the application of foliar iron did not affect yield (p˃ 0.05); however, the color of plastic mulch is significantly modified (p< 0.05), increasing when using transparent and silver mulch. The SPAD index in the leaves was significantly affected (p< 0.05) at the beginning of the experiment by treatments varieties and application of foliar iron, whereas at 90 days after the transplant was affected by the quilting, varieties and application of iron (p< 0.005), as well as the interaction between padding and iron application (p< 0.02). On the other hand, NO3 - concentrations in ECP were affected most of the time in the experiment. The highest concentrations of NO3 - were present in plants developed in plastic mulch and in those that did not receive application of foliar iron.

Keywords : chlorophyll; diseases; habanero; nitrates.

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