|
in
| Title : |
Drought resistance characteristics for rice fallow crops. |
| Material Type: |
printed text |
| Authors: |
Johansen, C. ; Saxena, N.P., Author ; Chauhan Y.S., Author |
| Publisher: |
Andhra Pradesh : ICRISAT |
| Publication Date: |
1989 |
| Pagination: |
102-116 p. |
| Keywords: |
Upland crops; Rice; Chickpeas; Pigeonpeas; Varieties; Cropping systems |
| Abstract: |
In considering adaptation of crops to rice fallow soils, it is necessary to define the soil moisture .characteristies _of the target site, especially in view of the poor physical characteristics which limit root access to moisture m most nee fallow soils. Ensuring good stand establishment is a prerequisite to optimum moisture usage in rice fallow soils. Important characteristics in this regard are established ability under saturated or suboptimal soil moisture conditions, penetrability of seedling roots, early growth vigour and nodulation ability. Drought escape or matching crop duration to probable periods of soil moisture availability offers considerable scope for optimizing use of residual soil moisture in rice fallows. Recent development of chickpea and pigeonpea genotypes of shorter duration open further possibilities of adaptin$ these crops to rice fallows by exploiting drought escape. There are also genotypic differences within chickpea and pigeonpea in drought avoidance traits, probably associated with ability of the root system to extract moisture from a greater soil volume. Any attempts at genetic enhancement of drought resistance in rice fallow crops should be integrated with the various management options for maximizing crop transpiration m rice fallows. |
| Link for e-copy: |
http://elibrary.narc.gov.np/?r=801 |
in
Drought resistance characteristics for rice fallow crops. [printed text] / Johansen, C. ; Saxena, N.P., Author ; Chauhan Y.S., Author . - Andhra Pradesh : ICRISAT, 1989 . - 102-116 p. | Keywords: |
Upland crops; Rice; Chickpeas; Pigeonpeas; Varieties; Cropping systems |
| Abstract: |
In considering adaptation of crops to rice fallow soils, it is necessary to define the soil moisture .characteristies _of the target site, especially in view of the poor physical characteristics which limit root access to moisture m most nee fallow soils. Ensuring good stand establishment is a prerequisite to optimum moisture usage in rice fallow soils. Important characteristics in this regard are established ability under saturated or suboptimal soil moisture conditions, penetrability of seedling roots, early growth vigour and nodulation ability. Drought escape or matching crop duration to probable periods of soil moisture availability offers considerable scope for optimizing use of residual soil moisture in rice fallows. Recent development of chickpea and pigeonpea genotypes of shorter duration open further possibilities of adaptin$ these crops to rice fallows by exploiting drought escape. There are also genotypic differences within chickpea and pigeonpea in drought avoidance traits, probably associated with ability of the root system to extract moisture from a greater soil volume. Any attempts at genetic enhancement of drought resistance in rice fallow crops should be integrated with the various management options for maximizing crop transpiration m rice fallows. |
| Link for e-copy: |
http://elibrary.narc.gov.np/?r=801 |
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