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Junejo S.,National Sugar Crops Research Institute | Panhwar R.N.,National Sugar Crops Research Institute | Kazi B.R.,National Sugar Crops Research Institute | Junejo A.A.,Guard Rice Company Pvt Ltd | And 3 more authors.
Journal of Animal and Plant Sciences | Year: 2012

Field experiments were conducted to observe flowering behavior of different sugarcane varieties under natural environment of Thatta and Ghorabari (coastal belt) sites in Sindh (Latitude 24.5°N). Different sugarcane varieties/genotypes were collected from all available sugarcane germplasm at different Sugarcane Research Institutes of Pakistan and were maintained by simple vegetative propagation (cuttings) method in non-replicated trials during 2008-09 and 2009-10. It was observed that latitude and mean minimum and maximum temperature during flowering inductive phase (September) were within acceptable limits to favour the flowering in sugarcane. However, flowering occurred in most of the cane varieties under natural environment in both sites of Thatta area but the time, intensity and percentage of flowered varieties differed widely between the years of the same environment. The results showed that in sugarcane germplasm planted as plant crop at Thatta during 2008-09, 30.44 percent varieties/genotypes flowered during 2009-10 with intensity ranging from 10.16 to 87.09 percent. In plant crop during the year 2009-10, 21.27 percent sugarcane varieties flowered during 2010-11 with intensity ranging from 6.12 to 66.66 percent and in ratoon crop of the year 2010-11, 12.43 percent varieties flowered with intensity ranging from 17.24 to 90.0 percent. During the same year in plant crop at Ghorabari site, 57.6 percent varieties/genotypes flowered with intensity ranging from 19.64 to 93.47 percent. The sugarcane crop took about thirteen to fifteen month's period for its complete flowering. The flowering in sugarcane varieties commenced from November and ended up to January. Most of the varieties flowered during the months of November and December. Only a few could flower during January. Moreover, Ghorabari site of district Thatta closer to sea shore was identified as best for profuse flowering in sugarcane.


Kaloi G.M.,National Sugar Crops Research Institute | Bhughio N.,National Sugar Crops Research Institute | Panhwar R.N.,National Sugar Crops Research Institute | Junejo S.,National Sugar Crops Research Institute | And 2 more authors.
Journal of Animal and Plant Sciences | Year: 2011

An experiment was carried out to observe the influence of the incubation period on phosphate release in two soils of District Hyderabad. The samples were treated with the initial phosphorus level of 12.5, 100 and 1000 μg g -1 soil as KH 2PO 4 dissolved in 0.01 M Ca CL 2. The soil solution ratio was 1:10. The samples were incubated for 1-60 days and were shaken for six hours daily on an orbital shaker (150 rpm) at room temperature. It was observed that phosphorus release increased, as the incubation period was less. The native soil phosphorus increased the phosphorus release at same initial phosphorus (PI) levels with increase in incubation period. The phosphate release increased where there was less clay content and more native phosphorus along with increasing initial phosphorus (PI) level. The phosphorus release decreased with more clay content and the increasing incubation period as well as the number of extractions. Thus it was recommended that soils bearing more clay content need higher phosphorus additions before sowing of crop. The soils having less clay content and more native phosphorus requires lower doses of phosphorus because soils have less phosphate adsorbing capacity and adsorbed phosphate could easily be released.


Junejo S.,National Sugar Crops Research Institute | Kaloi G.M.,National Sugar Crops Research Institute | Panhwar R.N.,National Sugar Crops Research Institute | Chohan M.,National Sugar Crops Research Institute | And 2 more authors.
Journal of Animal and Plant Sciences | Year: 2010

Investigations were carried out at National Sugar Crops Research Institute (NSCRI), Thatta to assess the performance of different sugarcane genotypes under agro-climatic condition of Thatta during 2006-07. Twelve sugarcane genotypes developed from exotic fuzz (true seed) of USA origin along with one local check as standard variety Thatta-10 were evaluated for their cane yield, yield components and quality performance subsequently in 4th cycle. The behavior of the genotypes with regard to cane yield, yield components and quality remained variable during the study. The data indicated that the genotypes HoTh-610, HoTh-607 and check variety Thatta-10 remained superior by producing maximum average cane yield of 112.66, 106.66 and 106.00 t ha-1, respectively. While, the genotypes HoTh-640, HoTh- 641 and HoTh-642 were ranked next to check variety on account of producing average cane yield of 103.0, 100.0 and 100.0 t ha-1, respectively. Moreover, the genotypes HoTh-614, HoTh-612, HoTh-633 and HoTh-618 occupied intermediate position by producing average cane yield of 94.0, 93.00, 89.66 and 82.0 t ha-1, respectively. While, in case of commercial cane sugar percentage, the data indicated that the genotypes HoTh-642 and HoTh-641were identified as high sugar containing on account of producing maximum CCS of 13.43% and 12.99%, respectively. Moreover, the genotypes HoTh-607, HoTh-606, HoTh-640, HoTh-610 and HoTh-618 also appeared to be the good sugar containing with CCS of 12.72, 12.42, 12.40, 12.36 and 12.35%, respectively, against Thatta-10 (11.56% CCS). All the genotypes along with Thatta-10 were also less susceptible to borer complex infestation.


Arain M.Y.,National Sugar Crops Research Institute | Panhwar R.N.,National Sugar Crops Research Institute | Gujar N.,National Sugar Crops Research Institute | Chohan M.,National Sugar Crops Research Institute | And 3 more authors.
Journal of Animal and Plant Sciences | Year: 2011

During 2001-02, 2002-03 and 2003-04 crop seasons performance of eleven promising candidate sugarcane varieties obtained from different Sugarcane Research Institutes of Pakistan along with local check Thatta-10 was tested in plant and ratoon crops at National Sugar Crops Research Institute, Farm Thatta. It was observed that none of the varieties in the trial could succeed the check variety in terms of cane yield and commercial cane sugar percentage. The average results of the plant crop for 2001-02 and 2002-03 crop seasons revealed that variety Thatta-10 showed superiority over rest of the varieties by giving maximum average cane yield of 116.77 t ha -1. The results further revealed that the check variety Thatta-10 remained high sugar content variety with average CCS 12.74%. The cane yield data for succeeding ratoon crop during 2003-04 revealed that check variety Thatta-10 maintained its superiority by producing maximum average cane yield of 110.33 t ha -1 and CCS 12.93%.


Chohan M.,National Sugar Crops Research Institute | Talpur U.A.,National Sugar Crops Research Institute | Junejo S.,National Sugar Crops Research Institute | Unar G.S.,National Sugar Crops Research Institute | And 2 more authors.
Journal of Animal and Plant Sciences | Year: 2014

Comparative performance of 12 sugarcane genotypes were tested in 4th stage against two local check varieties at National Sugar Crops Research Institute, Thatta. Study aimed at to identify potential sugarcane genotypes for releasing them as new commercial varieties in future. Genotypes under evaluation were developed from bi parental cross of USA origin fuzz (true seed). The experiment was laid out using a triplicate Randomized Complete Block Design (RCBD). Significant differences among the genotypes were observed for cane yield and contributing parameters and sugar yield. Plant crop attained more cane yield, CCS% and sugar yield as compared to ratoon crop. The traits i.e. cane height and millable canes for plant crop while, cane girth and millable canes for ratoon crop showed strong significant relationship for enhancing cane yield. Insect pest infestation stated that attack in ratoon crop was remained 20.32% higher than plant crop. Stem borer accounted high infestation followed by top and root borer among the genotypes. The genotypes HoTh- 402, HoTh-404, HoTh-408, HoTh-409, HoTh-414 and HoTh-430 on account of their better performance were selected for further testing and progression in final selection trials. The selected genotypes have great promise to be good commercial varieties in future.

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