How Does Crop Management Influence Biomass Yield and Quality of Different C3 Perennial Herbaceous Species?

Barro, Ruth; Ciria, P.; Pérez, José Luis; Pérez, Pilar Pérez; Fernández, Manuel F.; Pérez, I.; Carrasco, J.E.

doi:10.5071/22ndeubce2014-1cv.4.3

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“…These results are in line with Pedroso et al (2014) and Cicore et al (2017), who found that the higher the N mineral fertilization dose, the higher the biomass yield of tall wheatgrass in the United States and Peru, respectively. Contrarily, Barro et al (2014) showed no effect on biomass yield using a maximum of 80 kg N ha −1 during the first 3 years. Although we found a significant effect of N fertilization at the level of 80 kg N ha −1 yr −1 , the high data distribution with pooled data of three growing seasons (IQR of 67.0% and whiskers from −12.5% to +121.8%) suggests that further investigations are still necessary to ascertain the N requirements of tall wheatgrass on specific marginal lands.…”

Section: Perennial Grass On Unfavorable Texturementioning

confidence: 87%

Towards identifying industrial crop types and associated agronomies to improve biomass production from marginal lands in Europe

et al. 2022

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Growing industrial crops on marginal lands has been proposed as a strategy to minimize competition for arable land and food production. In the present study, eight experimental sites in three different climatic zones in Europe (Mediterranean, Atlantic and Continental), seven advanced industrial crop species [giant reed (two clones), miscanthus (M. × giganteus and two new seed‐based hybrids), saccharum (one clones), switchgrass (one variety), tall wheatgrass (one variety), industrial hemp (three varieties) and willow (eleven clones)], and six marginality factors alone or in combination (dryness, unfavorable texture, stoniness, shallow soil, topsoil acidity, heavy metal and metalloid contamination) were investigated. At each site, biophysical constraints and low‐input management practices were combined with prevailing climatic conditions. The relative yield of a site‐specific low‐input system compared with the site‐specific control was from small to large (i.e. from −99% in industrial hemp in the Mediterranean to +210% in willow in the Continental zone), due to the genotype‐by‐management interaction along with climatic variation between growing seasons. Genotype selection and improved knowledge on crop response to changing environmental, site‐specific biophysical constraint and input application has been detected as key to profitably grow industrial crops on marginal areas. This study may act to provide hints on how to scale up investigated cropping systems, through low‐input practices, under similar environmental and soil conditions tested at each site. However, further attention to detail on the agronomy of early plant development and management in larger multi‐year and multi‐location field studies with commercially scalable agronomies are needed to validate yield performances, and thereby to inform on the best industrial crop options.

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Section: Perennial Grass On Unfavorable Texturementioning

confidence: 87%