Cultivar mixtures: a means of exploiting morpho-developmental differences among cultivated groundnuts

Rattunde, H. F.; Ramraj, V. M.; Williams, J. H.; Gibbons, R. W.

doi:10.1016/0378-4290(88)90043-3

Cited by 12 publications

(6 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The LERs obtained in Experiments 1, 3 and 4 demonstrate that the option of growing genotypes with different season length requirements as an 'intercrop* is a better solution to variable season length than simply spreading the risk by growing a range of genotypes as sole crops. When the best combination of early and late maturing genotypes were intercropped, pod yields were comparable to those achieved by the sole crop of the early genotype, because of the early genotype's greater contribution, as reported by Rattunde et al (1988), and the benefits of decreased competition with the later maturing component of the intercrop. This result is consistent with the hypothesis of intercropping advantages based on improved resource availability (Willey, 1981), and with the results of a line-source intercropping experiment with two species with differing maturities, millet and groundnut (Natarajan and Willey, 1986).…”

Section: Discussionmentioning

confidence: 79%

See 1 more Smart Citation

Intercropping Short and Long Duration Groundnut (Arachis Hypogaea) Genotypes to Increase Productivity in Environments Prone to End-of-season Droughts

1990

View full text Add to dashboard Cite

Three short duration and one long duration groundnut genotypes, grown either 'sole' or as intercrops (in 1:1 ratios of the short duration with the long duration genotypes), were compared in four trials. The intercrop treatments resulted in Land Equivalent Ratios (LERs) of up to 1.25 for pod yield and total biomass despite moderate or severe water deficits at the end of the season. Specific combinations of genotypes were necessary to maximize the LER. The results indicate there is scope for achieving greater productivity in environments with a variable season length by growing late and early genotypes together in an intercrop system. R. C. Nageswara Rao, K. D. R. Wadia y J. H. Williams: Cultivo intercalado de genotipos de cacahuete (Arachis hypogaeaj de corta y larga duration para aumentar la productividad en los entomos propensos a las sequias de fin de temporada. RESUMENTres genotipos de cacahuete de corta duracion y uno de larga duracion, cultivados como monocultivo o como cultivo intercalado (en la proportion de 1:1 del genotipo de corta duracion con los de larga duracion), fueron comparados en cuatro ensayos. Los tratamientos de cultivo intercalado dieron como resultado coeficientes de tierra de cultivo equivalente (LER) de hasta 1,25 para rendimiento de vaina y biomasa total, a pesar de una fait a de agua moderada o severa al final de la campaiia. Hicieron falta determinadas combinaciones de genotipos para maximizar el LER. Los resultados indican que hay amplitud para lograr una mayor productividad en los entomos de temporadas de duracion variable cultivando juntos genotipos tempranos y tardi'os en un sistema de cultivo intercalado.

show abstract

Section: Discussionmentioning

confidence: 79%

“…Synergistic interactions have been demonstrated for mixtures of Spanish and Virginia groundnut types with a prostrate habit (Beg et al, 1975). Rattunde et al (1988) have shown the same effect using alternating rows of genotypes with differing maturities.…”

Section: Introductionmentioning

confidence: 80%

Intercropping Short and Long Duration Groundnut (Arachis Hypogaea) Genotypes to Increase Productivity in Environments Prone to End-of-season Droughts

1990

View full text Add to dashboard Cite

show abstract

“…Many factors are probably responsible for the better productivity of the mechanical mixtures and composites in the present experiment. Differences in height and time of relative maturity between the components may enhance their yields in mixtures through better spatial or temporal utilization of available environmental resources (TRENBATH 1976, WILLEY 1979, RATTUNDE et al 1988). In the present experiment Minden matured about two weeks earlier than Stella, and about six days earlier than Danas.…”

Section: Discussionmentioning

confidence: 99%

Yield Comparison of Within Row Mixtures, Between Row Mixtures, and Composites of Spring Faba Bean Cultivars

Tarhuni

McNeilly

1990

J Agronomy Crop Science

View full text Add to dashboard Cite

The performance of three spring faba bean (Vicia faba L.) cultivars Stella, Danas, and Minden in monocultures were compared with mixtures of Stella + Minden, and Danas + Minden sown as within row mixtures, alternate row mixtures, and as composites. Mixtures of both cultivar combinations, whether mechanical or composites, had net increases in seed yield per plot ranging from 10.5 % to 20 % above the means of the component cultivars grown in monoculture. Cultivars grown in mixtures in alternate rows had slightly greater seed yield than when they were grown alternately within rows. A further yield enhancement was obtained from growing composites. Data for total plant dry weight were similar to those for seed yield. The number of podded nodes per plant was the major yield component responsible for the increased yields of the component cultivars in mixtures. The ecological aspects of these results are discussed.

show abstract

“…Yield stability of peanut cultivar blends and pure components did not differ in some research (1,10,12). Rattundee et al (11) compared various blends of Spanish, Valencia, and Virginia market type peanut and found that blends were no more effective than the highest yielding pure component cultivar.…”

Section: Introductionmentioning

confidence: 99%

“…Planting blends of cultivars has been a strategy used in several crops to minimize risk and stabilize yield under diverse environments (1,5,6,8,9,10,11,12,15). Cowger and Weisz (5) reported that blends of wheat ( Triticum aestivum L.) cultivars increased yield compared with pure cultivar components in the presence and absence of disease.…”

Section: Introductionmentioning

confidence: 99%

Peanut Response to Blends of the Cultivars Gregory and NC-V 11

Jordan

Faircloth

2009

Crop Management

View full text Add to dashboard Cite

Planting cultivar blends of peanut (Arachis hypogaea L.) may provide an alternative to pure plantings of cultivars. Although blends of peanut cultivars have been evaluated previously, these experiments were conducted with cultivars that are no longer grown commercially. Research was conducted in North Carolina to compare pod yield, economic value, net return for two peanut pricing structures, and market grade characteristics for pure plantings of the Virginia market type cultivars Gregory and NC‐V 11 and a blend of these two cultivars. Results from this study revealed no major advantages of planting blends of the cultivars Gregory and NC‐V 11 compared with pure plantings of these cultivars. Pod yield, economic value, and net return of the cultivar blend were no higher than when at least one of the cultivars was planted separately. Although the cultivar blend produced a higher percentage of farmer stock fancy pods and extra large kernels than NC‐V 11 alone, a corresponding decrease in these market grade characteristics was noted when the blend was compared with Gregory alone. Further research is needed under a wider diversity of weather and management situations including cultivars with greater genetic diversity to understand possible benefits of cultivar blends of Virginia market type peanut in North Carolina and Virginia.

show abstract

Cultivar mixtures: a means of exploiting morpho-developmental differences among cultivated groundnuts

Cited by 12 publications

References 9 publications

Intercropping Short and Long Duration Groundnut (Arachis Hypogaea) Genotypes to Increase Productivity in Environments Prone to End-of-season Droughts

Intercropping Short and Long Duration Groundnut (Arachis Hypogaea) Genotypes to Increase Productivity in Environments Prone to End-of-season Droughts

Yield Comparison of Within Row Mixtures, Between Row Mixtures, and Composites of Spring Faba Bean Cultivars

Peanut Response to Blends of the Cultivars Gregory and NC-V 11

Contact Info

Product

Resources

About