DRIS Norms for grafted and non-grafted red bell pepper in semi arid climate conditions in a greenhouse

Esteban Sánchez,Pablo Preciado-Rangel,Juan Manuel Soto-Parra,María Teresa Lao,Alfonso Llanderal

doi:10.1590/s0102-053620180314

Abstract

ABSTRACT The objective of this study was to compute and compare DRIS norms for grafted and non-grafted red bell pepper crops grown in semi arid climate conditions. DRIS norms were computed with 84 samples of first young mature leaves collected during developed stage. The experiment had a completely randomized block design, and the values obtained for each plant and each variable were considered as independent replicates. Thirty-two DRIS norms nutrient ratios and coefficients of variation (CV) were computed from N, P, K, Ca, Mg, Fe, Cu, Zn and Mn analytical results. The ratios P/N and K/N in grafted and non-grafted pepper plants, showed low CV and therefore may play a fundamental role in crop production according with the DRIS norms calculated, since as light modification in the nutrient concentration led to a significant change in the nutritional balance. In conclusion, DRIS norms are sensitive for grafted and non-grafted plants. This work may signify an improvement in the nutritional diagnosis of grafted and non-grafted red bell pepper in semi arid climate conditions under a shaded greenhouse.

Highlights

Normas Diagnosis and Recommendation Integrated System (DRIS) para pimentão vermelho com e sem enxerto em condicões semiáridas em casa de vegetação
As quantidades ou proporções de P/N e K/N em plantas de pimentão com e sem enxerto mostraran baixos coeficiente de variação (CV) e, por tanto, de acordo com as normas DRIS, têm função fundamental no desenvolvimento da cultura, devido ao fato que uma pequena modificação pode ocasionar variação significativa no balanço nutricional da planta
From the point of view of health, red pepper has high content of provitamin A, due to the high concentrations of β-carotene and β-cryptoxanthin, anticancer compounds linked with oxygenated carotenoids and anti-ulcer properties (Mínguez-Mosquera & HorneroMéndez, 1993)

Summary

Introduction

Normas DRIS para pimentão vermelho com e sem enxerto em condicões semiáridas em casa de vegetação. This, together with the abiotic stresses, mainly salinity, suboptimal temperatures and water stress, can induce the appearance of physiopathies in the pepper such as blossom-end rot (BER) and cracking, inducing vegetal senescence and decreasing production, and the quality of the product (Nabi et al, 2006). To alleviate these problems the grafting technique has been introduced. Chávez-Mendoza et al (2015) found that fruits obtained from grafted plants increased β-carotene and vitamin C concentrations and improved the antioxidant capacity, but had no influence on total phenol

Objectives

Methods

Results