Carbon and nitrogen mineralization in Vertisol as mediated by type and placement method of residue

Abstract

Selection of appropriate residue application method is essential for better use of biomass for soil and environmental health improvement. A laboratory incubation experiment was conducted for 75 days to investigate C and N mineralization of residues of soybean (Glycine max L.), chickpea (Cicer arietinum L.), maize (Zea mays L.), and wheat (Triticum aestivum L.) placed on the soil surface and incorporated into the soil. The residue of soybean and chickpea had a greater decomposition rate than that of maize and wheat, despite of their placements. Higher rate of decomposition of the residue of soybean and chickpea was recorded when it was kept on the soil surface while soil incorporation of residue of wheat and maize resulted in faster decomposition. Therefore, these findings could be used as guidelines for management of crop residue application in farmland to improve soil and environmental quality.

Performance of chickpea (Cicer arietinum L.) in maize-chickpea sequence under various integrated nutrient modules in a Vertisol of Central India

“…[ 52 ] found that availability of soil N, P and K was considerably decline under control and the treatment that received only chemical fertilizers. This indicates that decreasing N, P and K availability in soil could be a threat to long-term sustainability of crop productivity and soil health [ 53 ] Furthermore, Yang et al [ 54 ] observed that integration of FYM with 75% NPK of SCTR improved the SOC content in surface soil over the initial value or unfertilized plots. A similar trend was observed for P and K availability in soil system, indicating that significantly build up the Olsen P in surface soil with continuous used of FYM (20 Mg ha –1 ) and integration of 75% NPK along with FYM as compared to rest of INM practices.…”

Influence of Residue Type and Method of Placement on Dynamics of Decomposition and Nitrogen Release in Maize-Wheat-Mungbean Cropping on Permanent Raised Beds: A Litterbag Study

“…Consistent with the findings of other researchers [14,29,62], decomposition rates were consistently faster in sub-surface-placed than in surface-placed residues as a result of greater soil-residue contact; a more favourable and stable microenvironment, particularly a soil moisture regime; and increased availability of exogenous N for decomposition by microorganisms [65,66]. However, it was reported a higher rate of decomposition of the legume residues when placed on the soil surface, while soil incorporation of residues of wheat and maize resulted in faster decomposition [67]. Our study revealed that 23% and 38% of maize stover was recovered from litter bags over the 150-day wheat-growing cycle in North-West India.…”

“…The higher mass loss was observed for the legume mung bean residue, which was mainly due to its high total N content and low C/N ratio compared to the other cereal residues. Residues with greater inherent N decompose more rapidly [62,67,68]. Studies suggested that the availability of nitrogen controls the decomposition of plant residues and particularly cereals with low N content; the soil decomposers are not unable absorb the residue or soil N [69] (Vahdat et al, 2011).…”

LIBERACIÓN DE COMPUESTOS FENÓLICOS LIGADOS EN EL GARBANZO (Cicer arietinum L.) UTILIZANDO MICROBIOTA HUMANA INTESTINAL

“…Es un cultivo idóneo debido a que es una planta resistente a la sequía y a las bajas temperaturas (siendo su rango térmico de desarrollo de 5-35 °C) (Aguilar-Raymundo y Vélez-Ruiz, 2013). Además, mejora la calidad del suelo a través de la fijación de nitrógeno (Armenta-Calderón et al, 2016;Jat et al, 2018). Existen dos tipos de garbanzo, el kabuli y desi.…”