Doses of organic residues in soil mulch influence productivity and profitability of Peruvian carrot

Abstract

Organic residue addition to soil is a recommended practice for arracacia production. This study was aimed at analyzing the agroeconomic productivity of arracacia cultivated with different doses (0, 5, 10, 15, and 20 Mg ha −1) and residue types in broiler manure (sawdust and rice hulls). From the arrangement in a 5 × 2 factorial scheme, ten treatments resulted, in a randomized complete block design with four replications. The highest leaf mass production was obtained with 11.2 Mg ha −1 of broiler manure. The use of broiler manure containing sawdust at 16 Mg ha −1 resulted in the highest shoot and root productivities. The maximum numbers of shoots were 649,500 ha −1 and 651,560 ha −1 , with 12.48 Mg ha −1 and 9.20 Mg ha −1 of broiler manure containing sawdust and rice hulls, respectively. The maximum number of marketable roots was obtained by using 11.77 Mg ha −1 and 12.21 Mg ha −1 of broiler manure containing sawdust and rice hulls, respectively. The costs per hectare varied by R$ 3,233.55 between the lowest and highest costs. It was concluded that the highest productivity of marketable arracacia roots was obtained with 16 Mg ha −1 of broiler manure containing sawdust. The highest gross and net incomes were obtained with 15 Mg ha −1 of broiler manure containing sawdust.

Evaluación de los componentes químicos del suelo en el sistema productivo de arracacha en Cajamarca, Colombia

“…El contenido de MO mostró valor promedio de 5.15 ±2.74%, con rango de variación entre 3.27±1.56 (medio) y 8.88 ±5.47% (alto), siendo la vereda Las Hormas donde se evidencio el mayor contenido de MO en el suelo, seguido de Potosí (7.25 ±2.55%), Las Lajas (7.19 ±1.59%) y La Bolívar (7.12 ±2.52%). Se ha reportado que altos contenidos de MO en el suelo bajo el sistema de producción de arracacha están relacionados con altos rendimientos de la raíz tuberosa por hectárea (Alvarado y Ochoa, 2010), asimismo, otros autores reportan que altos valores de MO en el suelo favorecen la actividad de microrganismos, favoreciendo la disponibilidad de nutrientes (Nunes et al, 2016;Heid et al, 2019). Estos resultados son similares a los reportados en esta investigación, encontrando una correlación positiva (r= 0.55) entre el contenido de MO y el rendimiento de las raíces por hectárea (Cuadro 3).…”