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Effects of planting density on water use and productivity of pearl millet (Pennisetum typhoides) grown on stored water. I. Growth of roots and shoots

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Relation http://oar.icrisat.org/5960/
http://dx.doi.org/1010.1017/S0014479700017774
 
Title Effects of planting density on water use and productivity of pearl millet (Pennisetum typhoides) grown on stored water. I. Growth of roots and shoots
 
Creator Azam-Ali, S N
Gregory, P J
Monteith, J L
 
Subject Millets
 
Description Pearl millet [Pennisetum americanum] was grown on stored water at Niamey, Niger, at row spacings of 38, 75 or 150 cm to determine the physiological basis of exploitation and conservation of water by crops during drought. Between 18 and 32 days after sowing, roots grew rapidly beneath all crops, reaching 140 cm in the narrow spacing, but there were differences between crops in the pattern of growth. Soil cores and trench profiles indicated that plants in wider rows had fewer deeper roots. Substantial differences in both the amount and pattern of shoot growth were recorded in the different populations. Initially growth was fastest at the narrow spacing but stopped by day 45 and eventually the wide spacing produced most DM due mainly to greater survival of tillers. The partitioning of aboveground DM into vegetative and reproductive fractions was similar at all 3 spacings and was consistent with figures for comparable crops elsewhere. The important role of tillers is discussed in relation to the development and maintenance of a canopy
 
Publisher Cambridge University Press
 
Date 1984
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/5960/1/203.pdf
Azam-Ali, S N and Gregory, P J and Monteith, J L (1984) Effects of planting density on water use and productivity of pearl millet (Pennisetum typhoides) grown on stored water. I. Growth of roots and shoots. Experimental Agriculture, 20 (3). pp. 203-214. ISSN 0014-4797