Publication Date
1997
Description
The potential growth in the winter annual forage crops in the Southeast of Buenos Aires Province (Argentina), is limited by the availability of nitrogen during the winter period. The effect of nitrogen fertilization on growth of the two main winter forage crops: oat (Avena sativa) and annual ryegrass (Lolium multiflorum Lam) was analyzed. Under winter-spring temperatures a higher growth potential was shown by annual ryegrass. The critical N doses were 150 and 100 kg.ha-1 of N for oat and annual ryegrass, respectively. The nitrogen dilution curves and the critical N concentration in the forage were determined. The initial concentration of N should not be less than 4.01 gr.100gr-1, a condition that, in the absence of water limitations or other nutrients, would permit expression of growth levels of forage in winter-spring close to the potential.
Citation
Marino, M A.; Mazzanti, A; Echeverria, H E.; and Andrade, F, "Nitrogen Fertilization in Winter Forage Crops in the Southeast of Buenos Aires Province (Argentina)" (2024). IGC Proceedings (1997-2023). 10.
https://uknowledge.uky.edu/igc/1997/session11/10
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Nitrogen Fertilization in Winter Forage Crops in the Southeast of Buenos Aires Province (Argentina)
The potential growth in the winter annual forage crops in the Southeast of Buenos Aires Province (Argentina), is limited by the availability of nitrogen during the winter period. The effect of nitrogen fertilization on growth of the two main winter forage crops: oat (Avena sativa) and annual ryegrass (Lolium multiflorum Lam) was analyzed. Under winter-spring temperatures a higher growth potential was shown by annual ryegrass. The critical N doses were 150 and 100 kg.ha-1 of N for oat and annual ryegrass, respectively. The nitrogen dilution curves and the critical N concentration in the forage were determined. The initial concentration of N should not be less than 4.01 gr.100gr-1, a condition that, in the absence of water limitations or other nutrients, would permit expression of growth levels of forage in winter-spring close to the potential.
