02524naa a2200301 a 450000100080000000500110000800800410001902400390006010000250009924501690012426000090029352015770030265000110187965000150189065000200190565000160192565000230194165000250196465000230198965300200201270000170203270000220204970000250207170000240209670000180212070000200213877300640215821274122020-12-01       2020    bl uuuu     u00u1 u    #d7 a10.36783/18069657rbcs202000312DOI1 aPEREIRA, G. de A. C.  aSoil fertility and nutritional status of elephant grass fertilized with organic compost from small ruminant production and slaughter systems.h[electronic resource]  c2020  aAbstract: The application of organic composts derived from animal husbandry or agro-industry is a promising option to improve nutrient cycling and supply of soils and, consequently, forage production. The objective of this study was to evaluate the soil chemical properties and the nutritional state of elephant grass in response to rates of organic fertilizer composted from the waste of small ruminant production and slaughter systems. The experiment was conducted on a Fluvisol of a forage field with elephant grass var. Cameroon, and was arranged in a randomized block design with split-plots with repeated measures over time. Six rates of organic compost (0, 13.3, 26.6, 39.9, 52.3, and 79.8 t ha-1, in plots) and an additional treatment with mineral fertilizers were evaluated in four growth periods (60, 120, 180, and 240 days, in subplots) with four replications, resulting in a total of 28 plots. Soil fertility was evaluated after the fourth growth period, while leaf analysis was determined in every 60-day period. The increasing rates of organic compost increased the concentrations of OM, NH4+, NO3?, NH4+ + NO3?, P and base saturation, while the H+Al values decreased and the N and P contents increased in the plants. Compared with mineral fertilization, soil inorganic nitrogen and phosphorus increased by 34 and 97 % in response to the application of organic compost. In response to the application of organic compost, the leaf contents of all studied nutrients remained adequate in all studied periods, except for the macronutrient N and micronutrient Mn.  aBrazil  aComposting  aPlant nutrition  aCompostagem  aNutrição Vegetal  aPennisetum Purpureum  aResíduo Orgânico  aOrganic residue1 aPRIMO, A. A.1 aMENESES, A. J. G.1 aARAÚJO, M. D. M. de1 aPOMPEU, R. C. F. F.1 aGUEDES, F. L.1 aSOUZA, H. A. de  tRevista Brasileira de Ciência Sologv. 44, e0200031, 2020.