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Relationships between root growth ability and root flux activity and aerial part characteristics of hybrid mid-season rice
2002
Xu Fuxian | Zheng Jiakui | Jiang Kaifeng(Sichuan Academy of Agricultural Sciences, Luzhou (China), Rice and Sorghum Institute)
Study on the young ear differentiation character and the technology of sprouting for ratooning rice
2002
Ran Maolin | Xion Hong | Hong Song(Sichuan Academy of Agricultural Sciences, Luzhou (China), Rice and Sorghum Research Institute)
Studies on the heat tolerance of luhui 17 and its cross II you 7 at head sprouting
2002
Kuang Haochi | Wen Shaoshan | Liu Guoming(Sichuan Academy of Agricultural Sciences, Luzhou (China), Rice and Sorghum Research Institute)
[The cultivation of combination of sorghum and soybeans]
2002
Crismaru, V.
An outbreak of sorghum ergot in parts of Andhra Pradesh, India
2002
Navi, S.S. | Bandyopadhyay, Ranajit | Rao, T.G.N. | Tooley, P.W.
An overview of sorghum viruses in Asia and Africa
2002
Leslie, J. | Navi, S. | Narayana, Y. | Bandyopadhyay, Ranajit | Muniyappa, V.
Prevalence of ergot of sorghum in India
2002
Navi, S.S. | Bandyopadhyay, Ranajit | Tonapi, V.A. | Rao, T.G.N. | Tooley, P.W. | Reddy, R.K. | Indira, S. | Pande, S.
Bacterial Leaf Streak of sorghum a new report from India
2002
Navi, S. | Bandyopadhyay, Ranajit | Devi, K. | Reddy, D.
This paper reports the occurrence of bacterial leaf streak (Xanthomonas campestris pv. holcicola [Xanthomonas vasicola pv. holcicola]) on sorghum (Sorghum bicolor) at the ICRISAT research farm, Andhra Pradesh, India and in several farmers fields in Karnataka in 1999-2001. Disease symptoms were small water-soaked reddish-brown necrotic streaks that later broadened and developed tan centres with a narrow red margin. The bacterium was isolated and confirmed as X. campestris pv. holcicola based on antiserum reactions; this may be the first record of this pathogen on sorghum in India. Attempts to prove pathogenicity of the bacterium by inoculating sorghum seedlings with cultured isolates using various inoculation techniques were unsuccessful.
Mostrar más [+] Menos [-]Tillering in grain sorghum over a wide range of population densities: identification of a common hierarchy for tiller emergence, leaf area development and fertility
2002
Lafarge, T. A. | Broad, J. | Hammer, G. L.
Most studies of tiller development have not related the physiological and morphological features of each culm to its subsequent fertility. This introduces problems when trying to account for the effects of tillering on yield in crop models. The objective of this study was to detect the most likely early determinants of tiller fertility in sorghum by identifying hierarchies for emergence, fertility and grain number of tillers over a wide range of assimilate availabilities. Emergence, phenology, leaf area development and dry weight partitioning were quantified weekly for individual tillers and main culms of tillering and uniculm plants grown at one of four densities, from two to 16 plants m(-2). For a given plant in any given density, the same tiller hierarchy applied for emergence of tillers, fertility of the emerged tillers and their subsequent grain number. These results were observed over a range of tiller fertility rates (from 7 to 91%), fertile tiller number per plant at maturity (from 0.2 to 4.7), and tiller contribution to grain yield (from 5 to 78 %). Tiller emergence was most probably related to assimilate supply and light quality. Development, fertility and contribution to yield of a specific tiller were highly dependent on growing conditions at the time of tiller emergence, particularly via early leaf area development of the tiller, which affected its subsequent leaf area accumulation. Assimilate availability in the main culm at the time of tiller emergence was the most likely early determinant of subsequent tiller fertility in this study.
Mostrar más [+] Menos [-]Management of sorghum midge on sorghum on the coastal plain of Nicaragua
2002
Zeledon, J. J. | Pitre, H. N.
Experiments were conducted to determine the effectiveness of several management practices for sorghum midge [Stenodiplosis sorghicola (Coq.)J, on sorghum [Sorghum bicolor (L.) Moench] on the Pacific coastal plain of Nicaragua during the 1998 and 1999 growing seasons. Sorghum planted early had significantly lower infestations of sorghum midge than sorghum planted later. Of four varieties tested, the varieties that bloomed earliest had lowest sorghum midge infestations. The chemical insecticides Decis (deltamethrin), Lorsban (chlorpyrifos), and Talstar (bifenthrin) were effective when applied at the lowest test rates for control of sorghum midge adults, when sorghum was at 10% bloom and infestation was one adult per panicle.
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