Adubação verde e alterações nas características químicas de um Cambissolo na região de Ji-Paraná-RO

Abstract

A adubação verde promove benefícios nas características químicas, físicas e biológicas do solo. O trabalho avaliou o efeito da incorporação de diferentes adubos verdes nas características químicas de um Cambissolo háplico eutrófico. Foi utilizado o delineamento em blocos ao acaso, com oito tratamentos e três repetições. Os tratamentos consistiram das seguintes leguminosas: Calopogonium mucunoides, Crotalaria juncea, C. spectabilis, Cajanus cajan, Macrotyloma, Mucuna pruriens, Pueraria phaseoloides e a testemunha (sem leguminosa). As avaliações foram realizadas 60 dias após o corte e incorporação. A utilização de leguminosas como adubação verde proporcionou aumento nos teores de matéria orgânica, soma de bases e percentagem de saturação por bases, destacando-se a Pueraria phaseoloides, C. juncea e C. spectabilis. PALAVRAS-CHAVE:Adubos verdes, biomassa, características químicas do solo. Green manure and changes on chemical characteristics of a soil in the JiParaná-RO region ABSTRACTThe green manure promotes benefits on the chemical, physical and biological properties of soil. The experiment evaluated the effect of incorporation of differents green manure on the chemistry characteristics of a soil. Experimental design used was a randomized block, with eight treatments and three replications. Treatments were: Calopogonium mucunoides, Crotalaria juncea, Crotalaria spectabilis, Cajanus cajan, Macrotyloma axillare, Mucuna pruriens and Pueraria phaseoloides and the treatment control (without leguminous)). Evaluations of soil samplings were performed in 60 days after handling were performed. The results showed significant effects of the leguminous crop Pueraria phaseoloides, C. juncea and C. spectabilis on the fertility of the soil, with significant increments of organic matter, exchangeable bases and in the base saturation.

Influence of green manures on epiedaphic macrofauna in cerrado/pantanal ecotone

“…Its function is to incorporate organic matter, such as root exudates, root and leaf biomass and organic acids to the soil (DELARMELINDA et al, 2010).…”

Biological Attributes of the Soil with Intercaled Crops and Oil Palm (Elaeis guineensis Jacq.): Sustainable Management in the Amazon

“…The TOC presented values between 4.70 and 9.45 g kg -1 , being the highest values found in the interim systems OYu, Pa, OBa, highlighting the intermediate system OPi that presented the lowest levels. The intercalary systems contribute to the maintenance of the agrosystems, maintaining a balance of soil fertility [50] by promoting coverage, biomass production, carbon accumulation and nutrient removal from the deeper layers, in a cycling process that becomes more efficient reducing leach losses and erosion. The accumulation of biomass in these systems came mainly from the prunings made to the oil palm plants, as well as the fall of leaves and branches of the other species of the systems, contributing to the maintenance of the levels of organic matter and biological activity in these production models [51,52].…”

Soil management in integrated rose production system

“…In addition to these altered biometric characteristics of the stems, crop management, including fertilization, pest and disease control, and harvesting, was hampered by the presence of calopo, since this is a species with indeterminate growth. The low efficiency of calopo was also observed by Delarmelinda et al (2010). According the authors, this green manure did not demonstrate effectiveness in improving the Eutroferric Haplic Cambisol soil conditions.…”