Effect of Harvest Period on Starch Yield and Dry Matter Content from the Tuberous Roots of Improved Cassava (Manihot esculenta Crantz) Varieties

2012 ◽  
Vol 11 (5) ◽  
pp. 414-418 ◽  
Author(s):  
B.C. Ebah-Djedj ◽  
K.M. Dje ◽  
B.N`ue . ◽  
G.P. Zohouri ◽  
N.G. Amani
2013 ◽  
Vol 12 (27) ◽  
pp. 4310-4316 ◽  
Author(s):  
Elegba Wilfred ◽  
S Appiah rew ◽  
Azu Elaine ◽  
Afful Nusrat ◽  
K S Agbemavor Wisdom ◽  
...  

Hereditas ◽  
2007 ◽  
Vol 144 (4) ◽  
pp. 129-136 ◽  
Author(s):  
Elizabeth Balyejusa Kizito ◽  
Ann-Christin Rönnberg-Wästljung ◽  
Thomas Egwang ◽  
Urban Gullberg ◽  
Martin Fregene ◽  
...  

2016 ◽  
Vol 66 (4) ◽  
pp. 627-635 ◽  
Author(s):  
Williams Esuma ◽  
Robert S. Kawuki ◽  
Liezel Herselman ◽  
Maryke Tine Labuschagne

2020 ◽  
Vol 28 (s1) ◽  
pp. 71-82
Author(s):  
M. Wambua ◽  
R.M.S. Mulwa ◽  
P.F. Arama ◽  
S.A. Atieno ◽  
J.O. Ogendo

Cassava (Manihot esculenta Crantz) is a staple food crop grown by smallholder farmers in the marginal regions of western, coastal and eastern Kenya. The objective of this study was to evaluate popular cassava varieties for yield and cyanide content in the arid and semi-arid regions of Kenya. The study was carried out at five sites located in three sub-counties of Nakuru county in Kenya. Treatments included a collection of 27 sweet cassava varieties obtained from Western Kenya. Results revealed significant variations among varieties in all sites, for all parameters measured. The highest yields were obtained at Subukia, with the variety MM99/0067 yielding up to 200 t ha-1. Cyanide content varied significant among the varieties and sites; and was high in most of the cultivars, with highest levels recorded in variety Rao Onyoni (17.3 mg100 g-1) grown at the Lare site. The highest dry matter content was recorded in variety Selele rabuor (60.5%), at the Solai III site. Participating farmers ranked the materials based on yield, taste and order of general preference as follows: Subukia site (MM96/0067, NyaTanga, Adhiambo Lera, KME-1 and MH95/0183); Lare site (Nyar AICAD, Nyar Maseno, NyaTanga, and MM96/2480); and Solai site (KME-1, Nyar AICAD, Adhiambo Lera, Karembo, and Obaro dak).


Author(s):  
Amarullah

The evaluating cassava varieties for productivity necessary to assess the cassava stem characteristics for their suitability as planting material and to improve the capability of cassava farmers to select good quality cassava varieties. Cassava varieties are generally distinguished from each other by their morphological characteristics, which include leaf, stem and tuber colour. The cassava planting material used in this study and some of characteristics by five cassava varieties, consisted of mature stem cuttings of about 20 cm in length, containing between 10 and 12 nodes and planted in a vertical position along the top of the ridges. Each plot consisted of 30 plants, with date being taken from ten plants within each plot. Cassava varieties Malang-6 presented the highest yield average is 13.81 tones ha-1 followed by Singgah and Adira-4 i.e. 11.98 t ha-1 and 11.11 t ha-1 of different varieties 1 yang Ketan, which only weighs 6.63 t ha-1. Harvest index varieties of Adira-4, Malang-6, UJ 5 and Singgah were found 0.78, 0.77, 0.77 and 0.76, respectively higher and significantly different IP varieties of glutinous Ketan is 0.58. Malang varieties and Malang-6 that produces the highest tuber weight, has a low dry matter content is 5.65% and 5.62%. The Ketan varieties and UJ-5 has a tuber weight was significantly lower with dry matter content higher than that dried 8.69% and 8.68%. The UJ-5 varieties has a tuber weight starch HCN 230,17 higher and significantly other variety. Int. J. Agril. Res. Innov. Tech. 10(1): 108-116, June 2020


2009 ◽  
Vol 52 (1) ◽  
pp. 163-175 ◽  
Author(s):  
Marcus Vinícius Kvitschal ◽  
Pedro Soares Vidigal Filho ◽  
Carlos Alberto Scapim ◽  
Maria Celeste Gonçalves-Vidigal ◽  
Edvaldo Sagrilo ◽  
...  

The objective of this work was to compare different phenotypic stability methods by using yield and storage root dry matter content data of eight cassava genotypes, assessed in eight environments in northwest of Paraná State, Brazil. All the methodologies applied showed to be able to study the stability of cassava genotypes, but each with its peculiarities. The methodologies of Eskridge, Annicchiarico and Lin and Binns were the most appropriated on situation with smaller effect of G x E interaction. The AMMI analysis and the Toler and Burrows methodology were the most specific on detailing specific adaptations of cassava genotypes to favorable and unfavorable environments. It could be suggested to use simultaneous AMMI analysis and Toler and Burrows methodology. The clone IAC 190-89 was the most promising.


Author(s):  
Ioana Ciobanu ◽  
Maria Cantor ◽  
Erzsebet Buta ◽  
Tincuta Gocan ◽  
Ioana Crisan

The aim of present paper was to study the influence ofthe planting material (forced and unforced tuberous roots), and of the cultivar on the average soluble dry matter content (%) from Dahlia tuberous roots at harvest. Also, there were determined a series of relationships between soluble dry matter content and main plant characteristics, like average shoots per plant and average weight of the tuberous roots at harvesting. The study was conducted for two years at University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca on seven cultivars of Dahlia variabilis ‘cactus’ type: 'Kennemerland', 'TsukiYori No Sisha', 'Hayley Jane', 'Purple Gem', 'Star Favourite', 'Park Princess' and 'Friquolet'. Based on the results obtained it can be concluded that the forcing of the tuberous roots affected the accumulation of soluble dry matter content at dahlia tubers, but it also depends on the cultivar. The highest content of soluble dry matter was at following cultivars 'Star Favourite'/forced tubers (25.47%), 'TsukiYori No Sisha'/unforced tubers (24.80%), ‘Kennemerland’/unforced tubers (24.27%), 'Hayley Jane'/forced tubers (23.97%), and 'TsukiYori No Sisha'/forced tubers (22.57%). These dahlia cultivars can be recommended for inulin extraction.


1976 ◽  
Vol 12 (4) ◽  
pp. 321-328 ◽  
Author(s):  
D. K. Das Gupta

SUMMARYThe response of cassava to CCC was investigated by applying concentrations of 0, 500, 1000, 1500 and 2000 ppm twice or four times as a foliar spray, which resulted in a significantly greater tuber yield than the control with most marked effects at the final harvest. CCC at 1500 ppm, applied four times at various growth stages, gave the best increase in tuber yield. Application of CCC tended to cause greater RGR and dry matter content (percentage) of tubers.


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