Skip to main content Accessibility help
×
Home

Population, Growth and Water Use of Groundnut Maintained on Stored Water. I. Root and Shoot Growth

  • R. C. Nageswara Rao (a1), L. P. Simmonds (a2), S. N. Azam-Ali (a2) and J. H. Williams (a1)

Summary

The growth of roots and shoots was measured in stands of groundnut grown at a number of populations on stored water in central India. Total weight and length of roots per unit land area increased with population density, but the proportional increases were much less than for shoot weight. Consequently the root:total weight ratio increased from 0.3 in the densest stand to almost 0.5 in the widely spaced crop. The denser stands produced a greater proportion of their roots at depth. In wide rows there was little change in rooting density across the inter-row space.

Total dry matter per unit land area increased with population, although the weight per plant was less in denser stands. Although the crops were harvested prematurely, pod yield per unit land area, unlike total dry matter, was no greater in dense stands than in more widely spaced crops. The greatest number of pods per unit land area was recorded at an intermediate population density.

Copyright

References

Hide All
Alessi, J. & Power, J. F. (1982). Effects of plant and row spacing on dryland soybean yield and water use efficiency. Agronomy Journal 74:851884.
Azam-Ali, S. N., Gregory, P. J. & 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 shoots and roots. Experimental Agriculture 20:203214.
Azam-Ali, S. N., Simmonds, L. P., Rao, R. C. N. & Williams, J. H. (1989). Population, growth and water use of groundnut maintained on stored water. III. Dry matter, water use and light interception. Experimental Agriculture 25:7786.
Cooper, P. J. M., Gregory, P. J., Keatinge, J. D. H. & Brown, S. C. (1986). Effects of fertiliser, variety and location on barley production under rainfed conditions in northern Syria. 2. Soil water dynamics and crop water use. Field Crops Research. In press.
DLFRS (1981). Dryland Farming Research Scheme, Botswana. Phase III. Second Annual Report, December 1981. ARS Sebele, Botswana.
DLFRS (1982). Dryland Farming Research Scheme, Botswana. Phase III. Third Annual Report, December 1982. ARS Sebele, Botswana.
Gregory, P. J. & Reddy, M. S. (1982). Root growth in an intercrop of pearl millet/groundnut. Field Crops Research 5:241252.
Gregory, P. J., Shepherd, K. D. & Cooper, P. J. (1984). Effects of fertiliser on root growth and water use of barley in northern Syria. Journal of Agricultural Science, Cambridge 103:429438.
Hanks, R. J., Allen, L. H. & Gardner, H. R. (1971). Advection and evapotranspiration of wide-row sorghum in the central great plains. Agronomy Journal 63:520527.
ICRISAT (1982). Annual Report, 1981. Patancheru, Andhra Pradesh, India: International Crops Research Institute for the Semi-Arid Tropics.
Jones, M. J. (1986). Maize population densities and spacings in Botswana. Tropical Agriculture, Trinidad 63:2529.
Kirby, E. J. & Rackham, O. (1971). A note on the root growth of barley. Journal of Applied Ecology 8:919924.
McGowan, M., Blanch, P., Gregory, P. J. & Haycock, D. (1984). Water relations of winter wheat. 5. The root system and osmotic adjustment in relation to crop evaporation. Journal of Agricultural Science, Cambridge 102:415425.
Myers, R. J. K. (1980). The root system of a grain sorghum crop. Field Crops Research 3:5364.
Noordwijk, M. van (1983). Functional interpretation of root densities in the field for nutrient and water uptake. In Root Ecology and its Practical Application, 207226. International Symposium Gumpenstein, 1982. Bundesanstalt Gumpenstein, A-8952 Irdning.
Ong, C. K., Simmonds, L. P. & Matthews, R. B. (1987). Responses to saturation deficit in a stand of groundnut (Arachis hypogaea L.). 2. Growth and development. Annals of Botany 59:121128.
Passioura, J. B. (1972). The effect of root geometry on the yield of wheat growing on stored water. Australian Journal of Agricultural Research 23:745775.
Robertson, W. K., Hammond, L. C., Johnson, J. T. & Boote, K. J. (1980). Effects of water stress on root distribution of corn, soybeans and peanuts in sandy soil. Agronomy Journal 72:548550.
Rowse, H. R. & Phillips, D. A. (1974). An instrument for measuring the total length of root in a sample. Journal of Applied Ecology 11:309314.
Shinozaki, K. & Kira, T. (1956). Intraspecific competition among higher plants. 7. Logistic theory of the C-D effect. Journal of the Polytechnic of Osaka City University D7:3672.
Simmonds, L. P. & Williams, J. H. (1989). Population, growth and water use of groundnut maintained on stored water. II. Transpiration and evaporation from soil. Experimental Agriculture 25:6375.
Simmonds, L. P. & Azam-Ali, S. N. (1989). Population, growth and water use of groundnut maintained on stored water. IV. The influence of population on water supply and demand. Experimental Agriculture 25:8798.
Sinclair, T. R., Tanner, C. B. & Bennett, J. M. (1984). Water use efficiency in crop production. Bioscience 34:3640.
Teare, I. D., Kanemasu, E. T., Powers, W. L. & Jacobs, H. S. (1973). Water use efficiency and its relation to crop canopy area, stomatal regulation and root distribution. Agronomy Journal 65:207211.

Population, Growth and Water Use of Groundnut Maintained on Stored Water. I. Root and Shoot Growth

  • R. C. Nageswara Rao (a1), L. P. Simmonds (a2), S. N. Azam-Ali (a2) and J. H. Williams (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed