Publication Date
1997
Description
Optimal production of energy from biomass necessitates the identification and management of high yielding plant entries. Erianthus arundinaceum (Retz) Jesw. IK-76-110 was tested to determine the influence of harvest treatments at heights of 1.2, 2.5, and 3.7 m and mature in October (4.9 m), and mature in December (4.9 m and in flower) on agronomic characteristics from 1987 to 1990. All treatments received 25 kg ha-1 P and 93 kg ha-1 yr-1 K in one spring application and 336 kg ha-1 N in split applications applied prior to the growth of each harvest. An additional October treatment at the mature stage received similar P and K but only 168 kg ha-1 N. Plants repeatedly harvested (4 yr) at the 1.2 m height produced low dry biomass (DB) yields (5.2 Mg ha-1) and had a 100% plant stand loss, whereas plants harvested at mature stage December had a 51.5 Mg ha-1 average yield with no plant loss. Leaf area index was maximum (17) at 3.1 m plant height. Nitrogen concentration and IVOMD in plant tissue decreased with maturity. Harvesting Erianthus at 2.5 m and up to maturity produced high DB yields with extended stand longevity.
Citation
Mislevy, P; Martin, F G.; Adjei, M B.; and Miller, J D., "Changes in Agronomic Characteristics with Maturity of Erianthus IK-76-110" (2024). IGC Proceedings (1997-2023). 37.
https://uknowledge.uky.edu/igc/1997/session19/37
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Changes in Agronomic Characteristics with Maturity of Erianthus IK-76-110
Optimal production of energy from biomass necessitates the identification and management of high yielding plant entries. Erianthus arundinaceum (Retz) Jesw. IK-76-110 was tested to determine the influence of harvest treatments at heights of 1.2, 2.5, and 3.7 m and mature in October (4.9 m), and mature in December (4.9 m and in flower) on agronomic characteristics from 1987 to 1990. All treatments received 25 kg ha-1 P and 93 kg ha-1 yr-1 K in one spring application and 336 kg ha-1 N in split applications applied prior to the growth of each harvest. An additional October treatment at the mature stage received similar P and K but only 168 kg ha-1 N. Plants repeatedly harvested (4 yr) at the 1.2 m height produced low dry biomass (DB) yields (5.2 Mg ha-1) and had a 100% plant stand loss, whereas plants harvested at mature stage December had a 51.5 Mg ha-1 average yield with no plant loss. Leaf area index was maximum (17) at 3.1 m plant height. Nitrogen concentration and IVOMD in plant tissue decreased with maturity. Harvesting Erianthus at 2.5 m and up to maturity produced high DB yields with extended stand longevity.
