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  • pigeonpea  (5)
  • Springer  (5)
  • 1995-1999  (2)
  • 1990-1994  (3)
  • 1970-1974
  • 1965-1969
  • 1930-1934
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  • Springer  (5)
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  • 1995-1999  (2)
  • 1990-1994  (3)
  • 1970-1974
  • 1965-1969
  • 1930-1934
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  • 1
    Electronic Resource
    Electronic Resource
    Nitrogen balance and root behavior in four pigeonpea-based intercropping systems (1995)
    Springer
    Nutrient cycling in agroecosystems 42 (1995), S. 315-319 
    Details
    ISSN: 1573-0867
    Keywords: biological N2 fixation ; Cajanus cajan L. Millsp. intercropping ; minirhizotron ; natural15N abundance ; pigeonpea
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00750523
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  • 2
    Electronic Resource
    Electronic Resource
    RFLP analysis of cytoplasmic male-sterile lines of pigeonpea [Cajanus cajan (L.) Millsp.] developed by interspecific crosses (1997)
    Springer
    Euphytica 93 (1997), S. 307-312 
    Details
    ISSN: 1573-5060
    Keywords: Cajanus sericeus ; CMS ; mtDNA ; RFLP ; pigeonpea ; Cajanus cajan
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Total DNA from three putative cytoplasmic male sterile (CMS) progenies derived from crosses between the wild species Cajanus sericeus and the cultivated species Cajanus cajan, five C. cajan, one accession of C. sericeus and two genetic male sterile lines of pigeonpea were compared for their RFLP patterns using maize mitochondrial DNA (mtDNA) specific probes. Three putative cytoplasmic male sterile (CMS) progenies from the multiple cross genome transfer of pigeonpea lines (CMS 7–1, CMS 12–3, and CMS 33–1) showed hybridization patterns identical to that of C. sericeus when DNA was digested with EcoRI and HindIII and probed with maize mtDNA clones. The results suggested that these putative CMS progenies have the mitochondria of the female wild species parent. The hybridization patterns of the three male parental lines used in the development of the CMS progenies were similar in all the restriction enzyme-probe combinations except HindIII-atp6. The genetic male sterile lines, MS Prabhat and QMS 1 differed from each other in their hybridization pattern. The genomic DNA hybridization pattern of HindIII digested DNA from ICPL 87 differed from the other pigeonpea lines when probed with the maize mtDNA clones. The cluster analysis of the hybridization data suggested the occurrence of variation in the mitochondrial genome even among the cultivated species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1002958623171
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  • 3
    Electronic Resource
    Electronic Resource
    Spatial distribution of root activity and nitrogen fixation in sorghum/pigeonpea intercropping on an Indian Alfisol (1993)
    Springer
    Plant and soil 155-156 (1993), S. 341-344 
    Details
    ISSN: 1573-5036
    Keywords: intercropping ; nitrogen fixation ; nodulation ; pigeonpea ; root respiration ; sorghum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract A medium-duration pigeonpea cultivar (ICP 1–6) and a hybrid sorghum (CSH 5) were grown on a shallow Alfisol in monocropping and intercropping systems. Using a monolith method, spatial distribution of nodulation, acetylene reduction activity (ARA) and root respiration were measured. The number, mass and ARA of nodules decreased exponentially with distance from the plant base except at the late reproductive stage. Nodulation and ARA tended to be higher in the intercrop than in the monocrop. Respiration rate of roots increased with distance from the plant base and reached a maximum value at about 20–30 cm. The rate was higher in pigeonpea than in sorghum and also higher in intercrop than in monocrop. This study suggests that pigeonpea roots are physiologically more active than sorghum roots, implying that pigeonpea may become a strong competitor for nutrients in the soil when intercropped. The nitrogen-fixing ability of pigeonpea may be enhanced by intercropping because the sorghum rapidly absorbed inorganic N which would otherwise inhibit N2 fixation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00025052
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  • 4
    Electronic Resource
    Electronic Resource
    A study of the potential of hedgerow intercropping in semi-arid India using a two-way systematic design (1990)
    Springer
    Agroforestry systems 11 (1990), S. 243-258 
    Details
    ISSN: 1572-9680
    Keywords: Alley cropping ; fodder ; India ; intercrops ; Leucaena ; pigeonpea ; semi-arid tropics ; sorghum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The potential of hedgerow intecrropping with Leucaena leucocephala was explored on vertic Inceptisols over 4 years at ICRISAT Center, Patancheru, India. The study was conducted using a systematic layout involving different alley widths ranging from 1.35 to 4.95 m and with varying distances between hedge and crops. The alleys were cropped with alternate rows of sorghum and pigeonpea. Hedges composed double Leucaena hedgerows 60 cm apart were periodically harvested for fodder. Sole crops of all components and a sorghum/pigeonpea intercrop were included in all four replications of the study. Starting in the second year, Leucaena was progressively more competitive to annual crops, causing substantial yield reduction. Competition (primarily for moisture) was most severe in narrow alleys and was greatest on pigeonpea. The growth of Leucaena was not sufficient to compensate for reduced crop yields. Land equivalent ratios (LERs) calculated on the basis of grain yield of crops and Leucaena fodder yields showed that hedgerow intercropping (HI) was advantageous over sole crops only during the first two years using wide alleys, but disadvantegeous in the last two years. LERs calculated on the basis of total dry matter indicated only a small advantage for HI (13–17 percent) over sole crops in wider (〉4 m) alleys. Average returns per year from HI exceeded those of the most productive annual crop system (sorghum/pigeonpea intercropping) by 8 percent in 4.05 m alleys, and by 16 percent in 4.95 m alleys. Fodder production during the dry season was 40 percent of the annual total in these alley widths. Thus hedgerow intercropping at 4–5 m alley width is not very attractive for farmers in semi-arid India, which has 600–700 mm of annual rainfall. There is a need to examine the potential of HI in wider alleys. The merits and limitations of the systematic design are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00045902
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  • 5
    Electronic Resource
    Electronic Resource
    Productivity of annual cropping and agroforestry systems on a shallow Alfisol in semi-arid India (1991)
    Springer
    Agroforestry systems 15 (1991), S. 51-63 
    Details
    ISSN: 1572-9680
    Keywords: perennials ; agroforestry ; alley cropping ; hedgerow intercropping ; Leucaena ; pearl millet ; pigeonpea ; castor ; semi-arid tropics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract An experiment was conducted at ICRISAT Center, Patancheru, India from June 1984 to April 1988 on a shallow Alfisol to determine whether the productivity of annual crop systems can be improved by adding perennial species such as Leucaena leucocephala managed as hedgerows. Except in the first year, crop yields were suppressed by Leucaena due to competition for moisture. The severity of competition was high in years of low rainfall and on long-duration crops such as castor and pigeonpea. Based on total biomass, sole Leucaena was most productive; even on the basis of land productivity requiring both Leucaena fodder and annual crops, alley cropping had little or no advantage over block planting of both components. Application of hedge prunings as green manure or mulch on top of 60 kg N and 30 kg P 2 O 5ha−1 to annual crops did not show any benefit during the experimental period, characterized by below average rainfall. Indications are that (i) alley cropping was beneficial in terms of soil and water conservation with less runoff and soil loss with 3 m alleys than with 5.4 m alleys, and (ii) root pruning or deep ploughing might be effective in reducing moisture competition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00046278
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