The effect of plant population on peanuts (Arachis hypogaea) in a monsoonal tropical environment

Bell, MJ, Muchow, RC and Wilson, GL (1987) The effect of plant population on peanuts (Arachis hypogaea) in a monsoonal tropical environment. Field Crops Research, 17 2: 91-107. doi:10.1016/0378-4290(87)90085-2


Author Bell, MJ
Muchow, RC
Wilson, GL
Title The effect of plant population on peanuts (Arachis hypogaea) in a monsoonal tropical environment
Formatted title
The effect of plant population on peanuts (Arachis hypogaea) in a monsoonal tropical environment
Journal name Field Crops Research   Check publisher's open access policy
ISSN 0378-4290
1872-6852
Publication date 1987
Sub-type Article (original research)
DOI 10.1016/0378-4290(87)90085-2
Volume 17
Issue 2
Start page 91
End page 107
Total pages 17
Place of publication Amsterdam, Netherlands
Publisher Elsevier BV
Language eng
Formatted abstract
The responses in the growth of peanuts (Arachis hypogaea L. cv. Florunner) to plant density and to spatial ratio (ratio of inter-row: intra-row spacing) in a tropical monsoonal environment were investigated. Biological yield (above-ground biomass plus pods) was unresponsive to spatial ratio over the range 1:1-1:7:19, but it increased markedly (12 600-16 900 kg ha-1), with increasing density up to the maximum density of 588 000 plants ha-1. In contrast, economic yield (commercially recoverable pods and kernels) was relatively unresponsive to plant density in the range of 88 000-394 000 plants ha-1, after which a marked decline was recorded (6 500 kg ha-1 pods or 4 900 kg ha-1 kernels, falling to 5 700 kg ha-1 pods or 4 300 kg ha-1 kernels). Economic yields were maximized at square plant-arrangements (6 900 kg ha-1 pods or 5 200 kg ha-1 kernels), but were relatively uneffected by increasing plant rectangularity from spatial ratios of 1:2.15-1:7.19 (6 100 kg ha-1 pods or 4 600 kg ha-1 kernels).

The increase in biological yield with increasing plant was primarily attributed to differences in the amount of photosynthetically active radiation (PAR) intercepted (I), which was evident during both vegetative growth and kernel development. In contrast, I was unresponsive to spatial ratio. Neither density nor spatial ratio affected the average efficiency of conversion (Ec) of I to biological yield during vegetative growth (2.6-3.0 g MJ-1) nor during the entire life-cycle (2.1-2.3 g MJ-1). Average Ecm during kernel development was 55-60% of that during vegetative growth. Thus the higher economic yield of the square plant-arrangement was not associated with changes in I and Ec. Rather it was associated with greater partitioning of dry matter to reproductive yield and a greater proportion of total pods recovered at harvest.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Agriculture and Food Sciences
 
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