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Uneven variation in plant-to-plant spacing in pearl millet

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Relation http://oar.icrisat.org/3657/
http://dx.doi.org/10.2134/agronj1987.00021962007900050027x
 
Title Uneven variation in plant-to-plant spacing in pearl millet
 
Creator Soman, P
Jayachandran, R
Bidinger, F R
 
Subject Millets
 
Description Plant-to-plant spacing in fields of Pennisetum americanum is often highly variable. The effect of typical variation in spacing on grain yield was determined in a range of cropping situations. 20 within-row spacing patterns were designed so that the variance of spacing (Vs) between plants would range from 0 to 2.3 m². Plant population, fertility and season were also variants. In all the trials, seeds were sown in predetermined positions in each row and later thinned to a single plant/position. As Vs increased from 0.01 to 0.05, 0.10 and 0.70 m², yields declined by 21, 29 and 47%, resp. This reduction in yield did not depend on fertility level, season or plant population. Most of the yield reduction could be attributed to reduction in panicle number/plant. The results suggest that the tillering capacity of P. americanum, although it provides the capacity to adjust to a wide range of plant populations per se, does not provide adjustment to major changes in Vs
 
Publisher American Society of Agronomy
 
Date 1987
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/3657/1/AgronomyJournal_79_5_891-895_1987.pdf
Soman, P and Jayachandran, R and Bidinger, F R (1987) Uneven variation in plant-to-plant spacing in pearl millet. Agronomy Journal , 79 (5). pp. 891-895. ISSN 0002-1962