Effects of Cycocel on Crop Plants in Sierra Leone II. Cassava (Manihot Esculenta)

1976 ◽  
Vol 12 (4) ◽  
pp. 321-328 ◽  
Author(s):  
D. K. Das Gupta
Keyword(s):  
Sierra Leone ◽  
Manihot Esculenta ◽  
Dry Matter ◽  
Tuber Yield ◽  
Foliar Spray ◽  
Matter Content ◽  
Crop Plants ◽  
Growth Stages ◽  
Dry Matter Content ◽  
Final Harvest

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.

scholarly journals Evaluation of Potato (Solanum tuberosum L.) Varieties for Yield and Some Agronomic Traits

2020 ◽  
Vol 5 (1) ◽  
pp. 63-74
Author(s):  
Lemma Tessema ◽  
Wassu Mohammed ◽  
Tesfaye Abebe
Keyword(s):  
Specific Gravity ◽  
Dry Matter ◽  
Tuber Yield ◽  
Block Design ◽  
Matter Content ◽  
Tuber Quality ◽  
Dry Matter Content ◽  
Marketable Tuber ◽  
Potato Varieties ◽  
Central Highlands

AbstractA field experiment was conducted in the central highlands of Ethiopia to evaluate the performance of potato varieties for tuber yield and to identify a superior variety in tuber yield and yield components. The experiment was laid out in a randomized complete block design with three replications at two locations in the central highlands of Ethiopia during the 2017 main cropping season. The results of analysis of variance (ANOVA) showed the presence of highly significant (P<0.01) differences among varieties over all traits studied. The mean squares for location were also significant in indicating the influence of environments on the traits of the studied varieties. However, the interaction between variety and environment had no significant effect on the performances of the potato varieties to attain 50% flowering, specific gravity and dry matter content indicating a similar performance of these traits across all locations. The variety Belete produced the maximum total tuber yield of 32.8 t ha -1 and marketable tuber yield of 29.1 t ha-1. Conversely, farmers` variety Nech Abeba produced the minimum total tuber yield of 13.8 t ha-1 and marketable tuber yield of 8.4 t ha-1. For most tuber quality traits, viz., tuber specific gravity, dry matter content, starch percentage and total starch yield, varieties Belete and Menagesha were the maximum and minimum producers, respectively. Thus, it could be concluded that varietal and environmental variations as well as their interaction had considerable influence on tuber yield and the potato’s attributes.

scholarly journals Effect of mosaic virus diseases on dry matter content and starch yield of five cassava (Manihot esculenta Crantz) accessions in Ghana

2013 ◽  
Vol 12 (27) ◽  
pp. 4310-4316 ◽  
Author(s):  
Elegba Wilfred ◽  
S Appiah rew ◽  
Azu Elaine ◽  
Afful Nusrat ◽  
K S Agbemavor Wisdom ◽  
...  
Keyword(s):  
Mosaic Virus ◽  
Manihot Esculenta ◽  
Dry Matter ◽  
Matter Content ◽  
Dry Matter Content ◽  
Virus Diseases ◽  
Manihot Esculenta Crantz ◽  
Starch Yield

scholarly journals Yield traits as selection indices in seedling populations of cassava

2010 ◽  
Vol 10 (3) ◽  
pp. 191-196 ◽  
Author(s):  
Henry Fred Ojulong ◽  
Maryke Tine Labuschagne ◽  
Liezel Herselman ◽  
Martin Fregene
Keyword(s):  
Dry Matter ◽  
Tuber Yield ◽  
Selection Index ◽  
Matter Content ◽  
Root Weight ◽  
Dry Matter Content ◽  
Root Yield ◽  
Breeding Scheme ◽  
Selection Indices ◽  
Root Quality

The cassava breeding scheme currently used is long, because initial stages concentrate mainly on improving yield, with root quality selection following later. To shorten the scheme, yield and root quality should be selected simultaneously, starting at the seedling nursery. In this study, a nursery comprising of eight cassava families and 1885 seedlings developed from parents adapted to three major agro-ecologies, were evaluated for yield related traits in Colombia. Percentage dry matter content (DMC) and harvest index produced similar ranking of the parents. Tuber yield, weight, and number showed potential of increasing yield through conventional breeding. A selection index including fresh root yield, percentage DMC, root weight and roots per plant, with heavier weights being assigned to root weight and roots per plant, should be used.

The nutritive value ofPanicum maximum(guinea grass). III. Factors affecting voluntary intake by cattle and water buffaloes

1968 ◽  
Vol 71 (1) ◽  
pp. 67-71 ◽  
Author(s):  
W. L. Johnson ◽  
W. A. Hardison ◽  
A. L. Ordoveza ◽  
L. S. Castillo
Keyword(s):  
Dry Matter ◽  
Nutritive Value ◽  
Matter Content ◽  
Growth Stages ◽  
Panicum Maximum ◽  
Dry Matter Content ◽  
Crude Fibre ◽  
Water Buffaloes ◽  
Lactating Cows ◽  
Guinea Grass

SummaryDry-matter intake (D.M.I.) fromPanicum maximum(guinea grass) was studied in digestibility trials with Holstein and water buffalo bulls and in a feeding trial with lactating cows.Differences in voluntary D.M.I. per unit body weight0·73between the Holsteins and water buffaloes were not significant. Average D.M.I. for all bulls in all main trials was 2·16 kg per 100 kg B.W. Average D.M.I. by the lactating cows was 2·08 kg per 100 kg B.W., for all practical purposes the same as for the bulls.D.M.I. was not related to stage of maturity or season of harvest of the guinea grass. Intakes of digestible protein, T.D.N., and digestible energy in different seasons and at different growth stages were related to the percentage of those nutrients in the grass.Correlation coefficients were 0·68 between D.M.I. and B.W.0·73, 0·59 between D.M.I. and T.D.N. content, and 0·58 between D.M.I. and crude protein content, D.M.I. was not closely related to dry-matter content (r= 0·30) or crude fibre content (r= 0–01) of the guinea grass.

scholarly journals Performance, Variance Components, and Acceptability of Pro-vitamin A-Biofortified Sweetpotato in Southern Africa and Implications in Future Breeding

2021 ◽  
Vol 12 ◽  
Author(s):  
Edmore Gasura ◽  
Francisca Matsaure ◽  
Peter Sekwena Setimela ◽  
Joyful Tatenda Rugare ◽  
Cacious Stanford Nyakurwa ◽  
...  
Keyword(s):  
Vitamin A ◽  
Dry Matter ◽  
Tuber Yield ◽  
Vitamin A Deficiency ◽  
Matter Content ◽  
Sub Saharan Africa ◽  
Environment Interaction ◽  
Dry Matter Content ◽  
Marketable Yield ◽  
Lattice Design

In sub-Saharan Africa (SSA), vitamin A deficiency (VAD) is a major cause of blindness in children under 5 years. Sweetpotato (Ipomea batatas L.) is widely grown in this region, and pro-vitamin A varieties could help to combat such problems. Fourteen newly introduced orange-fleshed sweetpotato (OFSP) varieties from the International Potato Centre (CIP) and two local checks were evaluated at four environments using a 4 × 4 triple-lattice design for total tuber yield, marketable yield, unmarketable yield, total tuber numbers, marketable tuber numbers, unmarketable tuber numbers, dry matter content, and sensory characteristics on boiled sweetpotato. Since varieties were previously tested intensively by CIP under diverse conditions, the focus of the current study was to determine their acceptability by farmers. Across-environment ANOVA showed highly significant differences (P &lt; 0.001) for environments, genotypes, and genotype × environment interaction (GE) for all traits studied. Variety Cecelia outperformed the rest in three environments. Cecelia, Erica, Ininda, and Lourdes were found to be the top four most stable and high-yielding varieties. Genetic gains of the top four varieties over the preferred local check Mai Chenje ranged from 135 to 184%, and across-environment broad-sense heritability was 60% for tuber yield. Furthermore, farmers accepted the dry matter content (which was &gt;25%) and taste of all the introduced OFSP varieties. Since there was a high acceptability by farmers, introductions from CIP could help improve human nutrition. Despite the appropriate design, the error variance component was the highest for all traits, and proper field plot techniques were proposed in future breeding and testing activities.

scholarly journals Farklı Organik Gübrelerin Tohumluk Patates (Solanum tuberosum L.) Çeşitlerinde Verim ve Kalite Üzerine Etkileri

2016 ◽  
Vol 4 (7) ◽  
pp. 566
Author(s):  
Hasan Eleroğlu ◽  
Kürşat Korkmaz
Keyword(s):  
Specific Gravity ◽  
Plant Height ◽  
Dry Matter ◽  
Tuber Yield ◽  
Starch Content ◽  
Poultry Manure ◽  
Matter Content ◽  
Dry Matter Content ◽  
Stem Number ◽  
Output Time

This study was conducted to determine the effects of use organo-mineral fertilizers and poultry manure on yield and quality of seed tubers different potatoes varieties (Solanum tuberosum L.). The study was designed in three replicated completely randomized block factorial design with eight potato cultivars (Madaline, Provento, Marfona, Agata, Arizona, Mustang, Rumba and Saviola) and including three different fertilizer as Hexaferm organo-mineral (%20 organics, 8-21-0+Zn), compost (1 t da-1) and fermented poultry manure (1 t da-1). In order to determine the effect of fertilizer forms on the yield and quality characteristics of different varieties of potatoes were examined features like output time of the tuber, output rates, plant height, stem number per hill, tuber yield per hill, total tuber yield, cracks tuber yield, dry matter content, starch content and specific gravity. Used fertilizers have no significant effect on output time of the tuber, output rates, plant height, stem number per hill, total tuber yield, dry matter content, starch content and specific gravity of varieties. The difference observed in terms of output time of the tuber, output rates, plant height, stem number per hill between the varieties was insignificant. The difference between the average tuber yield per hill, total tuber yield, cracks tuber yield, dry matter content, starch content and specific gravity of varieties were significant. Similarly, the fertilizers had a significant effect on the average tuber yield per hill of varieties . The significant interactions were found on traits average tuber yield per hill and average specific gravity between Fertilizer x Varieties. As a result, considered economically the fermented and compost poultry manure can be used instead of organo-mineral fertilizers in the production of seed potatoes.

scholarly journals Effect of harvesting dates on the yield and tuber quality of processing potatoes

2019 ◽  
Vol 44 (1) ◽  
pp. 179-193
Author(s):  
M Sharkar ◽  
JU Ahmed ◽  
SF Ahmed ◽  
SMZ Al Meraj ◽  
M. Mohi Ud Din
Keyword(s):  
Specific Gravity ◽  
Dry Matter ◽  
Tuber Yield ◽  
Starch Content ◽  
Matter Content ◽  
Tuber Quality ◽  
Dry Matter Content ◽  
Potato Varieties ◽  
Potato Products

An experiment was conducted to study the effect of harvesting dates and variety on the yield and processing quality of potato tuber. Three processing potato varieties (BARI Alu-25, Asterix; BARI Alu-28, Lady Rosetta and BARI Alu-29, Courage) were used as test crops and they were harvested at different days after planting [80, 90, and 100 days after planting (DAP)]. The three processing potato varieties showed higher tuber yield of Grade A (9.12 t ha-1) and B (13.64 t ha-1). The highest tuber yield (Grade A+B) [29.62 t ha-1] and total tuber yield (35.97 t ha-1) was found in Courage at 90 and 100 DAP harvest, respectively. The variety Lady Rosetta attained the highest percent of processable tuber yield (86.8% of the total tuber yield), the maximum dry matter content (26.37%), specific gravity (1.102) at 90 DAP harvest and this variety also contained the highest mean starch content (111.75 mg g-1 FW) followed by Courage (111.17 mg g-1 FW) and Asterix (103.95 mg g-1 FW). Optimum dry matter content (24.07%), specific gravity (1.091), starch content (110.15 mg g-1 FW), processable tuber yield (26.62 t ha-1) and total tuber yield (32.76 t ha-1) was found at 90 DAP harvest and therefore, it could be mentioned as suitable harvesting date for processing purposes. Among the varieties, Lady Rosetta and Courage were found preferable potato varieties that could be used for processing of potato products. Bangladesh J. Agril. Res. 44(1): 179-193, March 2019

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