Influence of Inter-Intra Row Spacing on Yield Losses of Tomato Cultivars

Field experiment was carried out at Melkassa Agricultural Research Center in 2012 and 2013 off-seasons using furrow irrigation with the objectives of evaluating the effect of four inter-row spacings (70, 80, 90, and 100 cm) and three intra-row spacing (20, 30 and 40 cm) on yield losses of tomato growing under open field production with fresh market (Bishola) and processing (Cochoro) type of determinate tomato cultivars. The treatments were arranged in 2x4x3 factorial in a split-split plot design in three eplications. Data on major yield loss agents such as, blossom end rot, decay, insect, disease, sunburn, crack, catface and others minor disorders were collected; as well as total yield, percent of marketable and unmarketable fruit yield parameters were analyzed. Results of the study showed that inter-intra row spacing and cultivar had a significant (

Influence of inter and intra-rows spacing on yield and yield components of tomato cultivars

Tomato is an important cash crop in Central Rift Valley of Ethiopia and currently plant spacing practiced by growers quite different from research recommendation.Field experiment was carried out at Melkassa Agricultural Research Center, in the year 2011/12 and 2012/13 off seasons with the objectives of evaluating the effect of four inter-row spacings (70, 80, 90, and 100 cm) and three intra-row spacing (20, 30 and 40 cm) on yield and yield components of fresh market(Bishola) and processing (Cochoro) tomato cultivars. The treatments were arranged in 2x4x3 factorial in a split-split plot design in three replications. Data were collected on plant canopy width, above ground dry biomass as well total, marketable and unmarketable fruit yield and on quality parameters such as TSS, fruit length and diameter were analyzed. The results indicated that inter and inter-row spacing had a significant effect on plan canopy width, above ground dry biomass, total, marketable, unmarketable fruit yield, TSS, fruit length and diameter. The highest canopy width of Bishola (77.08 cm) was recorded at 40 cm x 100 cm whereas for Cochoro (71.30 cm) at 40 cm x 90 cm. Maximumfruit TSS (3.72) was recorded at 40 cm intra-row spacing and this was not significantly different from 30 cm (3.68). The highest total fruit yield of 100.45 and 92.55 ton/ha were recorded for closer inter and intra-row spacing of 70 and 20 cm, respectively. However, the highest marketable yield was obtained at 90 cm (51.48 ton/ha) inter-row spacing and at 30 cm (45.78 ton/ha) intra row spacing and this was not significantly different from 40 cm. The study suggest that 30 cm x 90 cm or 40 cm x 90 intra-inter row spacingcombination was suitable for obtaining higher marketable yield and good quality fruit around Melkassa and similar conditions in Ethiopia

Evaluation of the diagnostic performance of PanbioTM Abbott SARS-CoV-2 rapid antigen test for the detection of COVID-19 from suspects attending ALERT center

BACKGROUND: The emergence and rapid spread of coronavirus disease 2019 (COVID-19), a potentially lethal disease caused by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), is causing public health issues around the world. In resource-constrained nations, rapid Abbott SARS-CoV-2 antigen test kits are critical for addressing diagnostic gaps in health institutions and community screening. However, there is no evidence or proof of diagnostic performance in Ethiopia. The aim of this study was to compare the performance of PanbioTM Abbott SARS-CoV-2antigen rapid test kit to the gold standard, RT-PCR, in COVID-19 patients with clinical symptoms suggestive of COVID-19. METHOD: A prospective, cross-sectional study was conducted between November 2021 and April 2022, on 120 suspected patients recruited from outpatient, emergency, and intensive care units in one of the tertiary hospitals in Ethiopia. Nasopharyngeal swabs were collected from suspected cases and were tested using the Abbott SARS-CoV-2 kit, a rapid diagnostic test (RDT) and compared to the reference standard RT-PCR. RESULT: The sensitivity and specificity of the RDT were 74.2% and 100%, respectively. A total of 62 samples (51.6%) were RT-PCR positive. Of these, 46 were Ag-RDT positive. Sensitivity among symptomatic patients was 79.4% (95% CI 68.3-90). The Abbot RDT and RT-PCR had a Kappa value of agreement of 0.735 (p < 0.001). These values were acceptable when compared to the WHO's suggested thresholds. CONCLUSION: The finding from this study support the use of the Abbot RDT as a diagnostic tool in COVID-19 suspects, mainly in those with higher viral loads

Evaluation of Banana (Musa spp.) Cultivars for Growth, Yield, and Fruit Quality

አህፅሮት ይህ ጥናት የተካሄደው ዘጠኝ (አራት ከውጪ የገቡ እና &nbsp;አምስት ከሀገር ውስጥ የተሰበሰቡ) የሙዝ ዝርያዎችና አንድ በመመረት ላይ የሚገኝ የማወዳደሪያ ዝርያ በአራት የተለያዩ የሀገሪቱ አካባቢዎች ለሁለት የምርት ዓመታት ያላቸውን የዕድገት፣ ምርት እና ጥራት ሁኔታ ለመገምገም ነበር፡፡ በእያንዳንዱ የሙከራ ቦታ እያንዳንዱ ዝርያ ሶስት ጊዜ በተለያየ ረድፍ ተተክሎ አስፈላጊው እንክብካቤ እየተደረገላቸው ተገምግመዋል፡፡ የተገኘው መረጃ እንደሚያመለክተው በተክል ቁመት፣ ተተክሎ ማበብ እስከሚጀምር እና ተተክሎ ምርት እስከሚደርስ በሚወስደው ጊዜ፣ በአምባዛ (ዘለላ) ክብደት፣ በፍሬ ውፍረት፣ በፍሬ ርዝመት፣ በፍሬ ክብደት፣ በምርት መጠን፣ በልጣጭ ውፍረት፣ የሚበላው ክፍል ከልጣጩ ጋር ባለው ጥምርታ፣ በሚሟሙ ጠጣሮች መጠን፣ በአሲድ መጠን፣ በፒኤች፣ በፍሬ እርጥበት እና በፍሬ የአመድ ይዘት መጠን በዝርያዎች መካከል ከፍተኛ ልዩነት ተመዝግቧል፡ እንደአጠቃላይ ዝርያዎቹ አጭርና ወፍራም ተክል (ግንድ) ነበራቸው፡፡ ዝርያዎቹ ተተክለው እስኪያብቡ ከ243.8 እስከ 316.8 ቀናት እንዲሁም ተተክለው ምርታቸው እስኪሰበሰብ ከ374.4 እስከ 446.7 ቀናት ወስዶባቸዋል፡፡ የሁሉም የሙከራ አካባቢዎች አማካይ የምርት መጠን ከ43.67 እስከ 52.46 ቶን በሄክታር ሆኖ ተመዝግቧል፡፡ አምስት ዝርያዎች ከማወዳደሪያው ዝርያ አኳያ ተወዳዳሪ (ተመሳሳይ) የሆነ ምርት አስመዝግበዋል፡፡ በስሜት ህዋሳት አማካኝነት በተካሄደ የትንተና መረጃ መሰረት ሁሉም ዝርያዎች በቀማሾች ዘንድ ተመራጭ ሆነዋል፡፡ ከማወዳደሪያ ዝርያው አኳያ እጩ ዝርያዎች ከፍተኛ የሚሟሙ ጠጣሮች መጠን፣ ፎስፎረስ እና ፖታሲየም እንዲሁም አነስተኛ የአሲድ መጠን አስመዝግበዋል፡፡ የፍሬ እርጥበትና የአመድ ይዘት መጠን እንደቅደምተከተላቸው ከ71.53 እስከ 76.56 በመቶ እና ከ2.5 እስከ 3.36 በመቶ ሆኖ ተመዝግቧል፡፡ የዕድገት፣ የምርትና የጥራት መረጃዎችን መሰረት በማድረግ ‘ሌዲ ፊንገር’ እና ‘ድንኬ-1’ የተባሉት ዝርያዎች በዋና ዋና የሙዝ አምራች አካባቢዎች ወደምርት እንዲገቡ ምክር ተሰጥቷል፡፡ &nbsp; Abstract A study was conducted to evaluate four introduced and five local banana cultivars with a check variety for growth, yield and quality performances at four locations for two crop cycles. The experiment was laid out in a randomized complete block design with three replications. The results revealed significant varietal differences in plant height, days to shooting, time from planting to harvest, bunch weight, finger diameter, length and weight, yield, peel thickness, pulp-to-peel ratio, soluble solids, titratable acidity, pH, moisture and ash contents. The cultivars had generally short and thick plants. Cultivars took from 243.8 to 316.8 days to flowering while from 374.4 to 446.7 days to first harvest. The yield ranged from 43.67 to 52.46 t ha-1. Five cultivars had comparable yields to the check. The sensory results indicated that all the cultivars were generally preferred. The candidate cultivars recorded higher soluble solids, phosphorus and potassium, but lower titratable acidity than the check. The moisture and ash contents ranged from 71.53 to 76.56% and 2.50 to 3.36%, respectively. Considering the growth and yield performances as well as fruit physicochemical and sensory characteristics, ‘Lady Finger’ and ‘Dinke-1’ are recommended for production in the major banana growing areas of Ethiopia

Comparison of various groups of Ct values with vaccination status and symptoms of the participants.

Comparison of various groups of Ct values with vaccination status and symptoms of the participants.</p

Detection rate of Abbot RDT-Ag test as compared with Ct values (N = 120).

Detection rate of Abbot RDT-Ag test as compared with Ct values (N = 120).</p

S1 Dataset -

(XLSX)</p

Detection rate and diagnostic performance of Abbot RDT Ag test against RT-PCR.

Detection rate and diagnostic performance of Abbot RDT Ag test against RT-PCR.</p

Socio-demographic characteristics of study participants (N = 120).

Socio-demographic characteristics of study participants (N = 120).</p