INVESTIGADORES
MONZON Juan Pablo
artículos
Título:
SunflowerSoybean Intercrop Productivity under Different Water Conditions and Sowing Managements
Autor/es:
J. F. ANDRADE, A. CERRUDO, R. RIZZALLI, J.P. MONZON
Revista:
AGRONOMY JOURNAL
Editorial:
AMER SOC AGRONOMY
Referencias:
Año: 2012 vol. 104 p. 1049 - 1055
ISSN:
0002-1962
Resumen:
The sunflower (Helianthus annus L.)soybean [Glycine max (L.) Merr.] intercrop has emerged as an option that increases land
productivity in the southern Pampas of Argentina, compared with sole crops, because of complementary use of resources between
species. A common management practice for this intercrop consists of delay soybean sowing, although delayed planting reduces
the capacity of soybean to capture resources. Simultaneous sowing could improve total intercrop productivity because of an
increase in soybean grain yield with no or little detrimental effects on sunflower grain yield. The objectives of this study were to
analyze the response of the sunflowersoybean intercrop and of their component species under different sowing management (i.e.,
relay or simultaneous sowing) and water availability conditions. Three experiments were conducted at Balcarce, Argentina. Four
cropping systems were evaluated: (i) sunflowersoybean intercrop with simultaneous sowing management (I00), (ii) sunflower
soybean intercrop with 30 d of delay between sunflower and soybean sowing (I30), (iii) sunflower sole crop (SUN), and (iv) soybean
sole crop (SOY). Sunflowersoybean intercrop grain yield tend to be higher than that for sole crops of the component species.
This yield advantage for intercrop increased with water availability and was associated with an increase in intercropped soybean
productivity. Intercrop sowing management had no effect on total intercrop grain yield. However, simultaneous sowing increased
soybean contribution to intercrop yield. Finally, our results indicate that agronomic practices that promote intercropped soybean
performance increase intercrop productivity relative to the sole crops of their component species.