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Effects of planting density on water use and productivity of pearl millet (Pennisetum typhoides) grown on stored water. II. Water use, light interception and dry matter production

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Relation http://oar.icrisat.org/5961/
http://dx.doi.org/10.1017/S0014479700017786
 
Title Effects of planting density on water use and productivity of pearl millet (Pennisetum typhoides) grown on stored water. II. Water use, light interception and dry matter production
 
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. Water extraction based on neutron probe readings was compared with crop transpiration using a porometer and allied measurements. Between 23 and 52 days after sowing, plants at the narrow and medium spacings used c. 77 and 100 mm of water, resp., and those at the wide spacing used between 59 and 75 mm. Estimates of seasonal crop evaporation from leaf resistances and from the green LAI of the crops were 103, 130 and 123 mm for the narrow, medium and wide spacings, resp. The water use/g dry wt. produced was similar for both narrow and medium spacings but water was used more efficiently in the wide spacing. Dry wt. increased in proportion to intercepted radiation with the same efficiency (1.3 g/MJ) irrespective of spacing
 
Publisher Cambridge University Press
 
Date 1984
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/5961/1/215.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. II. Water use, light interception and dry matter production. Experimental Agriculture, 20 (3). pp. 215-224. ISSN 0014-4797