scholarly journals Response of Potato Varieties to Potassium Levels in Hamelmalo Area, Eritrea

2015 ◽  
Vol 5 (1) ◽  
pp. 11
Author(s):  
Daniel Zeru Zelelew ◽  
Biniam Mesfin Ghebreslassie
Keyword(s):  
Soil Fertility ◽  
Block Design ◽  
Total Yield ◽  
Potato Production ◽  
Quality Parameters ◽  
Soluble Solids ◽  
Tuber Quality ◽  
Tuber Weight ◽  
Potato Varieties ◽  
Potassium Application

Poor soil fertility and lack of high yielding certified varieties are of the major potato production tribulations in Eritrea. Top soils are continually removed due to water run-off and thus soil fertility and productivity has declined as a result. An experiment was designed to assess the response of potato varieties to different levels of potassium application at Hamelmalo Agricultural College, Eritrea. Three varieties (Ajiba, Zafira and Picasso) and five potassium levels (0, 75, 150, 225 and 300 kg K<sub>2</sub>O/ha) along with all possible interactions were used. Experimental design following factorial Randomized Complete Block Design (RCBD) in three replications was employed. Data was collected on yield and tuber quality parameters. The result of the study indicated that there were significant variations in the performances of varieties in terms of yield and quality parameters in which Ajiba was found to be more responsive and high yielding. Tuber number, tuber diameter, tuber weight per plant, total yield, total soluble solids, specific gravity and tuber moisture content showed significant differences due to the application of potassium. As a result, the highest tuber weight (1.14 kg/plant) and yield (49.38 tones/ha) were recorded from Ajiba treated with 300 kg K<sub>2</sub>O/ha. The result further revealed that there is a promising profit return by investing more on potassium application upto 300 kg K<sub>2</sub>O/ha. It is, thus, recommended that potassium fertilizers should be introduced to optimize productivity in Hamelmalo area, Eritrea.

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 Performance of potato (Solanum tuberosum L.) varieties with and without straw-mulch at Shankharapur, Kathmandu, Nepal

2020 ◽  
Vol 3 (2) ◽  
pp. 193-204
Author(s):  
Kalyani Shrestha ◽  
Shrawan Kumar Sah ◽  
Reeti Singh ◽  
Yam Narayan Devkota
Keyword(s):  
Tuber Yield ◽  
Solanum Tuberosum L ◽  
Block Design ◽  
Medium Size ◽  
Tuber Weight ◽  
Potato Varieties ◽  
Straw Mulch ◽  
Crop Varieties ◽  
Randomized Complete Block Design ◽  
Benefit Cost

The suitability of crop varieties in a particular location determines the productivity of crops. A field experiment was conducted from February to May 2020 at Shankharapur, Kathmandu, Nepal to evaluate the growth and productivity of potato varieties with and without mulch. Five potato varieties (Cardinal, Janakdev, Khumal Bikas, MS- 42.3, Panauti Local) were evaluated under straw-mulch and no-mulch conditions. The treatments were arranged in two factorial Randomized Complete Block Design (RCBD) with 3 replications. The results revealed that the highest tuber yield was produced by Janakdev (34.29 t ha-1) followed by Panauti Local (29.52 t ha-1). Similarly, straw-mulch gave higher yield (25.9 t ha-1) as compared with no mulch condition (21.73 t ha-1). The higher tuber yield in the Janakdev and Panauti Local was because of higher tuber weight per hill, higher number and weight of medium size (50 -100 g) and oversize (> 100 g) tuber per hill. Similarly, higher yield in straw mulch was due to higher number and weight of tuber per hill. Higher gross return, net return was observed and the benefit cost ratioin varieties Janakdev (4.08) and Panauti Local (3.53) and rice straw mulch (2.88). Therefore, potato varieties Janakdev and Panauti Local with straw mulch are most suitable for Kathmandu like climate for improving productivity and profitability.

scholarly journals (Z)-3-Hexenyl Butyrate Induces Stomata Closure and Ripening in Vitis vinifera

Agronomy ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1122
Author(s):  
Celia Payá ◽  
M. Pilar López-Gresa ◽  
Diego S. Intrigliolo ◽  
Ismael Rodrigo ◽  
José María Bellés ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Field Experiments ◽  
Negative Impact ◽  
Block Design ◽  
Stomatal Closure ◽  
Total Yield ◽  
Soluble Solids ◽  
Vitis Vinifera L ◽  
Randomized Block Design

Agronomy solutions for modifying pre-harvest grape ripening are needed for a more sustainable viticulture. Field experiments were performed in Vitis vinifera L. vines to study the effect of the previously described stomata-closing compound (Z)-3-hexenyl butyrate (HB). Exogenous treatments at different doses were periodically carried out using a randomized block design. Firstly, we observed that HB was able to induce stomatal closure in grapevine plants. Under field conditions, the application of HB around veraison induced a higher color intensity in berries, and vines treated at higher doses reached this stage earlier than the un-treated controls. There was also a clear increase in both grape anthocyanin concentration and total soluble solids without having a negative impact on total yield. We therefore, confirm the role of HB as a universal natural stomatal closure compound and propose a new use for HB in viticulture as a ripening inducer, by accelerating anthocyanin accumulation.

scholarly journals The effect of pruning systems on yield and fruit quality of grafted tomato

2017 ◽  
Vol 35 (2) ◽  
pp. 247-251
Author(s):  
Isabel Mourão ◽  
Luis M Brito ◽  
Luisa Moura ◽  
Maria E Ferreira ◽  
Sofia R Costa
Keyword(s):  
Fruit Quality ◽  
Total Yield ◽  
Quality Parameters ◽  
Soluble Solids ◽  
Planting Density ◽  
Average Yield ◽  
Tomato Plants ◽  
Cotyledonary Nodes ◽  
Yield And Quality ◽  
Number Of Stems

Abstract Vegetable grafting is an increasingly used crop management strategy that aims to prevent soilborne biotic and abiotic stresses. For tomato crops, the number of stems per grafted plant determines planting density and crop exposure to sunlight. The effects of pruning grafted plants on yield and fruit quality have not been established, and this information is crucial to support decision-making by growers. A greenhouse experiment was run in the spring/summer season in the NW Portugal to assess the yield and quality parameters for grafted tomato plants (cv. Vinicio grafted onto Multifort rootstock) pruned to 2, 3 and 4 stems developed from the plant first nodes, or pruned to 2 stems developed from cotyledonary nodes, according to common practice. Total yield was significantly increased for the double-stemmed tomato plants, irrespectively of node origin (average yield 26.5 kg/m2), as compared to the 3- and 4-stemmed plants (average yield 19.5 kg/m2). These results can be explained by root system limitations to uptake water and nutrients coupled with the stronger competition between stems for the 3- and 4-stemmed plants. Fruit quality assessed through firmness (1.0 kg/cm2), soluble solids (5.1°Brix), acidity (1.0 g/100 g fresh weight), pH (4.4) and dry mater content (4.9%) was not affected by pruning systems. The greater yield obtained from double-stemmed plants offsets the increased planting and seedlings costs of using grafted tomato plants, particularly so for double-stemmed plants grown from first nodes, as they do not require intensive nursery care and are therefore less costly than those grown from cotyledonary nodes.

scholarly journals SELECTION VIA MIXED MODELS IN SEGREGATING GUAVA FAMILIES BASED ON YIELD AND QUALITY TRAITS

2017 ◽  
Vol 39 (2) ◽  
Author(s):  
SILVANA SILVA RED QUINTAL ◽  
ALEXANDRE PIO VIANA ◽  
BIANCA MACHADO CAMPOS ◽  
MARCELO VIVAS ◽  
ANTONIO TEIXEIRA DO AMARAL JÚNIOR
Keyword(s):  
Block Design ◽  
Total Yield ◽  
Ascorbic Acid Content ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Pulp Yield ◽  
Individual Level ◽  
Selection Accuracy ◽  
Randomized Block Design ◽  
Solids Content

ABSTRACT Aiming at the generation of new guava varieties with superior attributes, we conducted this study adopting the REML/BLUP procedure at individual level. Seventeen segregating guava families were evaluated in a randomized-block design with two replicates and 12 plants per plot. Families were obtained after controlled biparental pollination. The studied individuals showed high genotypic variance for fruit weight (FW), total yield (YLD), and ascorbic acid content (AAC). The heritability coefficients of the mean of progenies led to high progeny-selection accuracy for pulp yield (PY), soluble solids content (SSC), in addition to FW, YLD, and AAC; moderate accuracy for fruit acidity (FA) and SSC/FA ratio; and low accuracy for mesocarp thickness (MT) and pH. Selection among families (h2mp) indicated the highest values for FW, PY, YLD, SSC, and AAC, revealing that, for the present study, this practice would be effective, since these traits allowed for the highest selection accuracy values among families. As for the ranking of individuals, families originating from crosses UENF 1835 × UENF 1834, UENF 1831 × UENF 1832, and UENF 1831 × UENF 3739 stood out, occupying the first positions for most traits.

scholarly journals Effect of Foliar Application of Macro and Micronutrients on Quality of Kinnow Mandarin

2020 ◽  
pp. 27-33
Author(s):  
Reetika . ◽  
G. S. Rana ◽  
Komal . ◽  
Pooja . ◽  
M. K. Rana
Keyword(s):  
Ascorbic Acid ◽  
Foliar Application ◽  
Block Design ◽  
Ascorbic Acid Content ◽  
Quality Parameters ◽  
Soluble Solids ◽  
Randomized Block Design ◽  
Acid Ratio ◽  
Kinnow Mandarin ◽  
Juice Content

Aims: To determine the suitable combination of fertilizers for obtaining high quality fruits from Kinnow orchard. Study Design: The experiment was conducted in randomized block design with three replications per treatment on Kinnow mandarin. Place and Duration of Study: The experiment was conducted on seven years old earmarked plants at Experimental Orchard and in Post-harvest Technology Laboratory of the Department of Horticulture, CCS Haryana Agricultural University, Hisar, Haryana, India during the year 2016-17. Methodology: The treatments comprising of 11 combinations of Urea, K2SO4, ZnSO4, FeSO4 and boric acid which were laid out in randomized block design with three replications. Seven years old uniformly grown trees spaced at 6x6 m were selected for the present study and analyzed for yield and quality parameters such astotal soluble solids (%), acidity (%), ascorbic acid (mg/100 ml juice), juice content (%), TSS to acid ratio etc. Results: In comparison to other fertilizers combinations, the maximum fruit yield per plant (97.83 kg/plant), juice content (49.47%), total soluble solids (9.80%), TSS to acid ratio (11.95) and ascorbic acid content (32.30mg/100ml) and minimum acidity (0.83%), rag (24.00%) and peel content (25.60%) and peel thickness (3.42 mm) were registered with foliar application of Urea 1.0% + K2SO4 1.0% + ZnSO4 0.5% + FeSO4 0.5% + H3BO3 0.2%, however, the foliar spray of Urea, K2SO4, ZnSO4, FeSO4 and boric acid had no effect on number of seeds per fruit in Kinnow mandarin. Thus it is clear from results that foliar nutrient application showed a stimulating influence on yield and quality parameters of Kinnow fruits. Conclusion: From the research findings it can be concluded that the maximum potential of Kinnow mandarin plants in respect of fruit yield per plant, juice content, total soluble solids, TSS to acid ratio and ascorbic acid content was exploited to a maximum level and the acidity, rag and peel content and peel thickness to a minimum level with foliar application of Urea 1.0% + K2SO4 1.0% + ZnSO4 0.5% + FeSO4 0.5% + H3BO3 0.2%.

scholarly journals Varietal performance of garden pea (Pisum sativum var. hortense) under Terai zone of West Bengal

2018 ◽  
Vol 10 (3) ◽  
pp. 1032-1036
Author(s):  
S. Datta ◽  
K. Das
Keyword(s):  
Pisum Sativum ◽  
Plant Height ◽  
West Bengal ◽  
Block Design ◽  
Total Yield ◽  
Quality Parameters ◽  
Garden Pea ◽  
Land Preparation ◽  
Randomized Block Design ◽  
Delayed Flowering

The present study  was conducted during the rabi season of the years of 2014-15 and 2015-16 at the Instructional Farm of Uttar Banga Krishi Vishwavidyalaya, Pundibari, Cooch Behar to evaluate the performance of twelve garden pea (Pisum sativum var. hortense) genotypes (Arkel, Azad P-1, Kohinoor-10, Nirali, PusaPragathi, PH 89, Sabuj Sona, Punjab 89, Azad P-3, Debratna-111, PAN 4009, Golden Pea Geetanjali) with respect to plant height (cm), days to flowering (days), pod length (cm), pod width (cm0, number of pods, yield(g/plant and tonnes/hectare), shelling per cent (%) and protein content (%) in terai region of West Bengal. The experiment was carried out in factorial randomized block design with three replications. Farm yard manure (FYM) @ 15tonnes/ha was applied during land preparation and common fertilizer dose N:P:K @30:50:50 kg/ha was applied in each treatment. The results of the experiment revealed that the highest plant height (51.57 cm) and earliest flowering at 45.22 days after sowing (DAS) was obtained from Azad P-3 and Arkel respectively; whereas lowest plant height (35.62 cm) and most delayed flowering (53.61 DAS) were observed in Sabuj Sona.The higher magnitude of number of pods per plant(19.98), number of seeds per pod (7.27) ,yield per plant (69.34 g)and total yield per hectare(12.33 t/ha) were recorded in  Kohinnoor-10.Regarding the quality parameters, Azad P-3 recorded the highest shelling percentage (48.93%) as well as the highest protein percentage (23.24%).Considering the yield parameters and yield Kohinnoor-10 may be selected; whereas with respect to quality parameters Azad P-3 may be superior for the terai region of West Bengal.

scholarly journals Effects of Tomato Pomace Composts on Yield and Quality of Processing Tomato (Lycopersicon esculentum Mill.)

2019 ◽  
Vol 76 (2) ◽  
pp. 250
Author(s):  
Ioannis ROUSSIS ◽  
Ioanna KAKABOUKI ◽  
Antigolena FOLINA ◽  
Aristidis KONSTANTAS ◽  
Ilias TRAVLOS ◽  
...  
Keyword(s):  
Nitrogen Fertilization ◽  
Block Design ◽  
Quality Parameters ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Plant Residues ◽  
Tomato Pomace ◽  
Processing Tomato ◽  
Solids Content ◽  
Humus Soil

Organic farming encourages the use of organic waste materials as substitutes for chemical fertilizers. Tomato pomace presents an alternative to inorganic fertilizer. A field experiment was carried out to evaluate the influence of tomato pomace composts and nitrogen fertilization on agronomic and quality parameters of the processing tomato. The experiment was laid out in a randomized complete block design with three replications and five fertilization treatments (untreated, nitrogen fertilizer, tomato pomace with biocyclic humus soil, tomato pomace with manure and tomato pomace with plant residues). The results showed that the highest average fruit weight and fruit yield (163.4 t/ha) were found in plots subjected to nitrogen fertilization, while the highest total soluble solids content (4.29 °Brix), and L* and a* colour parameters, important quality parameters to processing tomato industry, were obtained through the application of tomato pomace mixed with biocyclic humus soil making organic tomatoes suitable for processing tomato industry.

scholarly journals OPTIMIZING WATER PRODUCTIVITY, YIELD AND QUALITY OF GRAPEFRUIT IRRIGATED BY BUBBLER AND SURFACE IRRIGATION UNDER KHARTOUM STATE SUDAN CONDITIONS

AGROFOR ◽  
2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Ahmed Al-KHALIFA B. AHMED ◽  
Shaker BABIKER AHMED ◽  
Mohamed A. ALI ◽  
Adil Y. YAGOUB
Keyword(s):  
Irrigation System ◽  
Water Productivity ◽  
Total Yield ◽  
Quality Parameters ◽  
Soluble Solids ◽  
Surface Irrigation ◽  
Marginal Rate ◽  
Yield And Quality ◽  
Irrigation Interval

The experiment was carried out in the private orchards at Tayba Alhasnab area ofsouth Khartoum State, in Sudan during 2012 and 2013 to evaluate the waterproductivity, yield and quality of foster grapefruit irrigated by bubbler and surfaceirrigation system. Irrigation interval was 5 days in bubbler irrigation system andevery 7 to12 days in surface irrigation system depending on the prevailing weatherconditions. The results revealed that higher yield and number of fruits was obtainedon bubbler irrigation system compared to surface irrigation system. Moreover,bubbler irrigation system increased the total yield of foster grapefruit by 28% and25%, respectively as compared to surface irrigation system. Applying irrigatedwater under bubbler irrigation system improved the quality parameters of fostergrapefruit such as fruit diameter recorded significant differences on bubblerirrigation system compared with surface irrigation system in both years, fruitweight and peel thickness recorded significant differences (P≤0.001) betweenbubbler irrigation system and surface irrigation system on finger weight, but ondifferences in peel thickness in both years, total soluble solids of foster grapefruitirrigated by bubbler irrigation system were significantly higher (P≤ 0.001)compared with surface irrigation system in both years.However, bubbler irrigation system saved irrigation water by 68% and 71% andhad highest water productivity (2.9 and 2.7 kg/m3) compared to surface irrigationsystem (0.67 and 0.68 kg/m3). Also highest marginal rate of return was obtainedwith bubbler irrigation system compared to surface irrigation.

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