Effects of compost organic amendments on chemical composition andin vitrodigestibility of alfalfa (Medicago sativaL.)

Abstract

the following fertiliser treatments were compared during the years 2002 and 2003 on alfalfa forage (Medicago sativa L.): compost obtained from the organic fraction of the Municipal Solid Waste (MSW); olive pomace compost (OPC); mineral fertiliser (Min). All the treatments allowed a distribution of 75kg ha -1 of P 2 O 5 . three cuttings occurred: at 168, 206 and 351 days after compost application (DAA) in 2002; 119, 152 and 320 DAA in 2003. Cumulative biomass and dry matter yields were measured during each experimental year. Furthermore, chemical composition and in vitro digestibility of dry matter (DMd), organic matter (OMd), crude protein (CPd) and NDF (NDFd) were determined. MSW treatment showed a significantly (P<0.01) higher content of ADL than OPC and Min (77.0, 66.0 and 65.0g kg -1 DM, respectively). Fertiliser treatments also affected (P<0.01) digestibility parameters. In fact, DMd and OMd values showed the same trend with lower percentages in MSW treatment than in the OPC and Min ones. the NDFd differed in all treatments having the highest value in OPC (40.1%). the results indicated that the soil distribution of organic materials offer the possibility to reduce the application of mineral fertilisers and production costs without decreasing alfalfa yield, forage chemical composition and in vitro digestibility.

Influence of manure with activators of organic matter on physical properties of soil

“…This is consistent with the assertions of other authors [2;3]. Lestingi et al [9] also mention the risk for bacterial activity caused by agricultural activities. In their previous study [10] they also highlighted the impact on the yield.…”

Effects of tillage and nitrogen fertilisation on triticale grain yield, chemical composition and nutritive value

“…Non‐structural carbohydrate (NSC) was estimated as NSC = 1000 − (CP + ash + EE + aNDFom), where nutrient contents are expressed in g kg −1 DM. In vitro DM (DMD) and true DM (IVTDMD), organic matter (OMD), CP (CPD) and aNDFom (NDFD) digestibilities were determined using the DAISY II system (ANKOM Technology, Macedon, NY, USA) 20. Each sample (4 tillage systems × 3 N levels × 3 replications × 2 years = 72) was weighed (∼0.5 g) in duplicate into ANKOM F57 filter bags in order to obtain, respectively, two replications for DMD and OMD, two for CPD and two for NDFD.…”

Producción De Medicago Sativa (Alfalfa), Aplicando Abonos Orgánicos en Época De Invierno

“…La fertilización orgánica, es una tecnología tradicional que incrementa la producción de forrajes (Vázquez-Vázquez et al, 2010), debido a que se incorporan varios nutrientes que requieren las plantas (Medina et al, 2015), mejorando la estructura y retención del agua (Travieso et al, 2018) y fertilidad del suelo (Lestingi et al, 2016). Se aumenta el crecimiento de las plantas (Risso 2000) y, en consecuencia, se incrementa el rendimiento de forraje de alfalfa .…”