2. Institutional Publications

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    Lodging of sugarcane and its influence on yield and quality of certain cultivars
    (Kerala Agricultural University, 1982) Sukumaran Nair, S; Mathew Jacob, K; Chellappan Nair, P K
    In order to estimate the loss in weight and recovery of sugar in the lodged crop of sugarcane a study was conducted at the Sugarcane Research Station, Thiru valla, Kerala during 1980-81. The length of canes, number of mi liable canes, weight and recovery of sugar were found to be reduced as the canes lodge. The loss in weight ranged from 10.16% to 18.95% for half lodged canes and 30-81% to 38.71% in full lodged canes. The loss in cane sugar varied from 33.84$ to 43,48# when the cane lodged completely. This phenomenon was more in fully lodged canes when compared with half lodged canes. It is therefore evident that lodging of sugarcane is one of the factors which decrease the production of cane and sugar.
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    Keeping quality of sugarcane setts of the popular varieties of Kerala
    (Kerala Agricultural University, 1983) Sukumaran Nair, S; Mathew Jacob, K; Nair, P K C
    In order to estimate the loss in weight of seed cane, viability of buds during storage and germination of viable buds, a study was taken up at the Sugarcane Research Station, Thiru valla during 1980-81 planting season, with four popular varieties of the tract. The maximum loss in weight was recorded in the variety Co-997 during storage upto 30 days and the loss in weight was rapid after 25 days of storage in the varieties Co 997 and Co. 785. This loss in weight is important when the seed materials are supplied to the cane growers in weight basis. The buds in the four varieties studied remained viable to a fair degree upto 1 5 days after the collection of the setts and thereafter the vaibility was reduced drastically. This loss was maximum in the variety Co 449 and minimum in Co-62175. Co 62175 showed the maximum tendency for pre-germination of buds in storage and such behaviour was minimum in Co 449. Considering the loss in weight of the seed cane, loss in viability and germination of the buds during varying periods of storages, the safe margin was found to be 15 days- It is desirable that the setts are planted as early as possible after harvest of the canes.
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    Variability and heritability of yield and quality components in the ratoon crop of sugarcane
    (Kerala Agricultural University, 1990) Sreekumar, S G; Gopinathan Nair, V; Sukumaran Nair, S
    Evaluation of the first ratoon crop of 48 hybrid sugarcane varieties in RED with three replications at the Sugarcane Research Station, Thiruvalla revealed that certain characters viz., germination count on the 45th day, shoot count on the 180th day, number of millable canes per plot and cane yield per plot had high genotypic coefficient or variation, heritability in the broad sense and genetic advance. Hence they are amenable to genetic improvement through selection and may be considered as dependable selection criteria for the improvement of cane and sugar yields in the first ratoon crop of sugarcane.
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    The weed flora in surgarcane fields of Palghat district
    (Kerala Agricultural University, 1993) Girija Devi, L; Neelakantan Potty, N; Abraham, C T; George Thomas
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    Co 88017, a promising sugarcane variety
    (Kerala Agricultural University, 1996) Thomas Mathew; Alexander, D; Santhakumari, S; Sreekumar, K; Jessy M Kuriakose; Hangovan, R
    The results of the study on sixteen zonal varieties received from the All India Co-ordinated Project (AICRP) on Sugarcane along with Madhuri (CoTl 88322), the ruling variety in Kerala as check revealed that Co 88017 out yielded the check in tenns of cane yield as well as commercial cane sugar. It has recorded a cane yield of 102.5 t ha.' and sugar yield of 13.18 t ha'. This variety was superior to many other entries tested in quality aspects of juice. Co 88017 was moderately resistant to red rot disease.
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    Effect of spacings, nitrogen levels and biofertilizers on yield and quality of sugarcane
    (Kerala Agricultural University, 1997) Dinesh Kumar, M; Hunsigi, G
    A field experiment was conducted during 1990-91 at the Regional Research Station, Mandya on effect of spacings and biocultures in conjunction with fertilizers on cane variety Co 62175. Results revealed that the recommended spacing of 0.9 m with 250 kg ha-I was the best. Both biocultures viz., Alotobaclor sp. and Aiospirillum sp. were found advantageous and their use along with any levels of N benefitted the variety to obtain better yield. Study did not support the saving of N levels due to biofertilization.