Repositorio
Institucional

Mercedes Martinez, M.

Ortega, Rodrigo#Janssens, Marc#Fincheira, Paola

Use of organic amendments in table grape: effect on plant root system and soil quality indicators

SOC CHILENA CIENCIA SUELO

JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION

en

The application of different organic matter sources as soil amendments is a common practice to stimulate root development and soil quality to improve crop yield and quality. For evaluating the effect of organic amendments on soil quality indicators and agronomic variables in table grape (Vitis vitifera) var Thompson seedless, different treatments including compost from grape pomace, humic extract, microbial inoculant, and chemical NPK fertilization, were evaluated in a pot experiment using an Inceptisol soil. Organic materials were applied in four C rates: compost, 0, 125, 250 y 500 g C pot(-1), humic extract, 0, 25, 50 and 100 g C pot(-1), compost and humic extract at their maximum C rates were also evaluated in absence of chemical fertilization, and microbial inoculant as bio-stimulant. Results showed a stronger root development in plants with compost and inoculant application. Furthermore, organic matter mineralization increased nutrient availability, this was evidenced by an increment of enzymatic activities, particularly beta-glucosidase, acid phosphatase, and alkaline phosphatase, in all treatments receiving compost. On the other hand, the application of humic extract produced a larger increment in WSC per carbon unit applied compared to compost, meaning that the former would be more efficient than the latter to provide C for soil microorganisms. This study showed that the joint application of compost, mineral fertilizer, and microbial inoculant should be considered to improve root development in Table grape (Vitis vinifera L.) and soil quality, under Integrated Nutrient Management (INM) programs.

Artículo original

This research was supported by FONDECYT 1130975 and USM Projects 28.09.49 and 28.11.69. The authors are grateful to Mr. Walter Cortes for his support with field work, and Dr. Monika Wimmer in Plant Physiology Lab. INRES- Uni Bonn, Bonn-Germany, and GISPA-group, USM, Chile for their valuable help.

Esta investigación fue financiada por el FONDECYT 1130975 y los Proyectos USM 28.09.49 y 28.11.69. Los autores agradecen al Sr. Walter Cortés por su apoyo en el trabajo de campo y a la Dra. Monika Wimmer del Laboratorio de Fisiología Vegetal del INRES de la Universidad de Bonn (Bonn, Alemania) y del grupo GISPA de la USM (Chile) por su valiosa ayuda.

10.4067/S0718-95162018005000501

pdf

Compost# humic substances# root density# enzymatic activity# soil quality indicators

http://dx.doi.org/10.4067/S0718-95162018005000501

Plant Sciences# Environmental Sciences# Soil Science

Compost# sustancias húmicas# densidad de raíces# actividad enzimática# indicadores de calidad del suelo

Viticultura

Ciencias del suelo

Agronomía

WOS:000432489200008

Use of organic amendments in table grape: effect on plant root system and soil quality indicators

Artículo original

version publicada

SOC CHILENA CIENCIA SUELO

JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION

Ciencias Vegetales# Ciencias Ambientales# Ciencia del suelo

0718-9516

en

ANID FONDECYT 1130975#USM 28.09.49#USM 28.11.69

ANID FONDECYT 1130975

USM Project 28.09.49

USM Project 28.11.69

This research was supported by FONDECYT 1130975 and USM Projects 28.09.49 and 28.11.69. The authors are grateful to Mr. Walter Cortes for his support with field work, and Dr. Monika Wimmer in Plant Physiology Lab. INRES- Uni Bonn, Bonn-Germany, and GISPA-group, USM, Chile for their valuable help.

pdf

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