Nutrient requirement and potassium nutrition in Persian cucumber with pruning to a single stem

Keywords: Cucumis sativus L., potassium concentration, nutrient extraction, fertigation, nutrient solution

Abstract

In fertigation systems, proper management of potassium nutrition in Persian cucumber crop increases fruit quality. Similarly, nutrient extraction indexes are needed to establish mineral nutrition programs during the crop cycle. The aim of this research was to evaluate the effect of potassium nutrition and quantify the nutritional extraction in two varieties of Persian cucumber (Reehan and Khassib). The experimental design was factorial 2 × 4, the first factor was the two varieties of cucumber and the second factor the concentration of K+ in the nutrient solution, with concentrations of 5, 7, 9 and 11 meq L-1. The variables were: Cumulative fruit production (PAF), fruit number (NF), individual fruit weight (PIF), fruit diameter and total soluble solids (TSS). The analysis of variance indicated that there was an effect of factor interaction in PAF and NF (P ≤ 0.05). In both varieties, there were significant differences in all the quantified response variables, where Khassib showed the highest values (Tukey, P ≤ 0.05). For the nutritive solution factor, there were only significant differences in PAF and PIF. The highest PAF (Tukey, P ≤ 0.05) was obtained with nutrient solutions containing 9 and 11 meq K L-1; while the highest PIF occurred with 5, 7 and 9 meq K L-1. The potassium concentration in the nutrient solution showed a positive correlation with the content of total soluble solids in fruits of the Reehan variety (r = 0.999), but not in the Khassib variety (r = -0.6829). The nutritional requirement (kg) per ton of fresh fruit in Reehan was N 3.93, P 0.46, K 3.11, Ca 0.79 and Mg 1.30; while in Khassib N 5.87, P 0.49, K 3.11, Ca 0.85 and Mg 1.54.

Author Biographies

Gelacio Alejo-Santiago, Universidad Autónoma de Nayarit

Ingeniero Agrónomo Especialista en Fitotecnia, Maestría y Doctorado en Edafología. Colegio de Posgraduados México.

Sergio Guadalupe Becerra-Venegas, Universidad Autónoma de Nayarit

Ingeniero Agrónomo. Universidad Autónoma de Nayarit.

Rubén Bugarín-Montoya, Universidad Autónoma de Nayarit

Ingeniero Agrónomo. Universidad de Chapingo, Maestría y Doctorado en la Universidad de Colima.

Evangelina Esmeralda Quiñones-Aguilar, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco

Ing. Agrónomo. Universidad Veracruzana. Maestría en Edafología. Colegio de Posgraduados y Doctorado en Microbiología, Biología Vegetal y Biotecnología en Francia.

Gabriel Rincón-Enríquez, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco

Maestría en Edafología. Colegio de Posgraduados y Doctorado en Microbiología, Biología Vegetal y Biotecnología en Francia.

Cecilia Rocío Juárez-Rosete, Universidad Autónoma de Nayarit

Ing. Agrónomo. Maest´ría y Doctorado en Edafología. Colegio de Posgraduados México.

Published
2021-05-14
Section
Scientific Papers