Physiological basis of yield variation in response to row spacing and plant density of mungbean grown in subtropical environments

Rachaputi, Rao C. N., Chauhan, Yashvir, Douglas, Chauhan, Martin, William, Krosch, Stephen, Agius, Peter and King, Kristopher (2015) Physiological basis of yield variation in response to row spacing and plant density of mungbean grown in subtropical environments. Field Crops Research, 183 14-22. doi:10.1016/j.fcr.2015.07.013


Author Rachaputi, Rao C. N.
Chauhan, Yashvir
Douglas, Chauhan
Martin, William
Krosch, Stephen
Agius, Peter
King, Kristopher
Title Physiological basis of yield variation in response to row spacing and plant density of mungbean grown in subtropical environments
Journal name Field Crops Research   Check publisher's open access policy
ISSN 0378-4290
1872-6852
Publication date 2015-11
Sub-type Article (original research)
DOI 10.1016/j.fcr.2015.07.013
Open Access Status DOI
Volume 183
Start page 14
End page 22
Total pages 9
Place of publication Amsterdam, NX, Netherlands
Publisher Elsevier
Collection year 2016
Language eng
Formatted abstract
In this study, we investigated the extent and physiological bases of yield variation due to row spacing and plant density configuration in the mungbean [Vigna radiata (L.) Wilczek] variety “Crystal” grown in different subtropical environments. Field trials were conducted in six production environments; one rain-fed and one irrigated trial each at Biloela and Emerald, and one rain-fed trial each at Hermitage and Kingaroy sites in Queensland, Australia. In each trial, six combinations of spatial arrangement of plants, achieved through two inter-row spacings of 1 m or 0.9 m (wide row), 0.5 m or 0.3 m (narrow row), with three plant densities, 20, 30 and 40 plants/m2, were compared. The narrow row spacing resulted in 22% higher shoot dry matter and 14% more yield compared to the wide rows. The yield advantage of narrow rows ranged from 10% to 36% in the two irrigated and three rain-fed trials. However, yield loss of up to 10% was also recorded from narrow rows at Emerald where the crop suffered severe drought. Neither the effects of plant density, nor the interaction between plant density and row spacing, however, were significant in any trial. The yield advantage of narrow rows was related to 22% more intercepted radiation. In addition, simulations by the Agricultural Production Systems Simulator model, using site-specific agronomy, soil and weather information, suggested that narrow rows had proportionately greater use of soil water through transpiration, compared to evaporation resulting in higher yield per mm of soil water. The long-term simulation of yield probabilities over 123 years for the two row configurations showed that the mungbean crop planted in narrow rows could produce up to 30% higher grain yield compared to wide rows in 95% of the seasons.
Keyword Harvest index
Mungbean
Radiation-use efficiency
Row configurations
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Queensland Alliance for Agriculture and Food Innovation
Official 2016 Collection
 
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