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Growth, development and nutrient uptake in pigeonpeas (Cajanus cajan)

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Relation http://oar.icrisat.org/4690/
http://dx.doi.org/10.1017/S0021859600053752
 
Title Growth, development and nutrient uptake in pigeonpeas
(Cajanus cajan)
 
Creator Sheldrake, A R
Narayanan, A
 
Subject Pigeonpea
 
Description The growth and development of two early (Pusa ageti and T-21) and three mediumduration (ST-1, ICP-1 and HY-3C) cultivars of pigeonpea (Cajanus cajan (L.) Millsp.) were compared at Hyderabad, India, in 1974 and 1975; in 1976 cv. ICP-1 was studied. The pigeonpeas were grown on a Vertisol and on an Alfisol. The crop growth rate in the first 2 months was low. The maximum rate of 171 kg/ha/day was found in the fourth month of growth of cv. ICP-1 on Alfisol. The early cultivars, one of which (cv. Pusa ageti) was morphologically determinate, and the other (cv. T-21) indeterminate, did not differ in the proportion of dry matter partitioned into seeds. The mean dry weight of the ab ove-ground parts of the medium cultivars on Vertisol in 1975 was 8·45 t/ha, including 2·23 t/ha of fallen plant material. The mean harvest index (ratio of grain dry weight to total plant dry weight) of these cultivars was 0·24 excluding fallen material and 0·17 taking fallen material into account. Starch reserves were present in the stems during the vegetative phase, but disappeared during the reproductive phase. In 1974 the maximum leaf-area index on Vertisol was 3 and on Alfisol 12·7. The net assimilation rate tended to decline throughout the growth period, but in the medium cultivars increased at the end of the reproductive phase, probably because of photosynthesis in pod walls and stems.
 
Publisher Cambridge University Press
 
Date 1979
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/4690/1/JA-25.pdf
Sheldrake, A R and Narayanan, A (1979) Growth, development and nutrient uptake in pigeonpeas (Cajanus cajan). The Journal of Agricultural Science, 92. pp. 513-526.