scholarly journals Strand thinning of Khadrawi date palm cultivar in relation to yield and fruit quality

2019 ◽  
Vol 43 (1) ◽  
Author(s):  
A. R. Moustafa ◽  
N. Abdel-Hamid ◽  
A. Abd El-Hamid ◽  
M. R. El-Sonbaty ◽  
S. K. M. Abd El-Naby
Keyword(s):  
Fruit Quality ◽  
Date Palm ◽  
Chemical Properties ◽  
Fruit Weight ◽  
Total Sugars ◽  
Palm Fruits ◽  
And Control ◽  
Physical And Chemical ◽  
And Chemical Properties

Abstract Background This experiment was carried out during 2015 and 2016 seasons to investigate the effect of strand thinning treatments by removing 15 and 30% of the total number of strands from the bunch center after 8 weeks from pollination (kimri stage) on productivity and fruit quality of Khadrawi date palm cultivar compared to the control (without thinning). Results The present results indicated that strand thinning by removing 30% of the total number of strands gave the lowest bunch weight and yield per palm compared to thinning 15% and control treatments during the two seasons of study. Also, removing 30% of the total number of strands improved some physical properties, i.e., fruit weight, flesh weight, fruit length, and fruit diameter than control in both seasons. All strand thinning treatments improved some chemical properties such as TSS %, total sugars %, and reducing sugars % than control (without thinning). However, both 15 and 30% strand thinning treatments had no significant effect on nonreducing sugars %, total acidity %, and tannins content in the two studied seasons. Conclusion From the obtained results, it was revealed that application of thinning treatment by removing 15 or 30% of the total number of strands from bunch center improved some physical and chemical properties of Khadrawi date palm fruits although there are no significant differences found between strand thinning at 15% and control during the second season.

scholarly journals KAJIAN SIFAT FISIK DAN KIMIA JERUK SIAM (Citrus nobilis var. microcarpa) SEMBORO BERDASARKAN UMUR SIMPAN MENGGUNAKAN PENGOLAHAN CITRA DIGITAL

2019 ◽  
Vol 23 (1) ◽  
pp. 68
Author(s):  
Herman Setiawan ◽  
Dedy Wirawan Soedibyo ◽  
Dian Purbasari
Keyword(s):  
Shelf Life ◽  
Chemical Properties ◽  
Fruit Weight ◽  
Physical And Chemical Properties ◽  
Code Size ◽  
Two Stages ◽  
Physical And Chemical ◽  
Non Destructive ◽  
And Chemical Properties

Since hundreds of years ago, orange have grown in Indonesia either naturally or cultivated. One of the most popular places for producing orange varieties is Semboro, Jember Regency. The quality of Semboro oranges is influenced by the level of harvest age and shelf life. In the storage process, Orange expiriences physically and chemical changes at each shelf life which is detrimental. At present the tests performed on Semboro orange are destructive. Based on this, non-destructive measurements are needed by using other methods such as digital image processing. The purpose of this study was to identify the relationship between the physical and chemical properties of Semboro orange based on shelf life. The Semboro Orange used was 150 fruits of super quality with  code size 1 and the same picking age of 28 MSB (weeks after flowering). Semboro oranges are stored for 15 days and measured with variations in shelf life of 1, 8 and 15 days. This research was conducted in two stages, namely taking pictures and measuring physical and chemical characteristics. Orange samples were then measured interm of physical and chemical properties using the O'hauss pioneer digital scales, penetrometer, refractometer and pH meter to obtain data on fruit weight, fruit hardness, total dissolved solids and acidity (pH) of the fruit. The value of the image quality variable and the physical and chemical properties were analyzed using one way anova test, correlation, regression, boxplot and validation test.

scholarly journals Effect of Slice Weight and Soaking Time on the Physico-Chemical Properties of Cassava Flour (Manihotesculentus) used for Bakery Products

2021 ◽  
pp. 10-24
Author(s):  
C. R. Abah ◽  
C. N. Ishiwu ◽  
J. E. Obiegbuna ◽  
E. F. Okpalanma ◽  
C. S. Anarado
Keyword(s):  
Chemical Properties ◽  
Process Variables ◽  
Soaking Time ◽  
Cassava Flour ◽  
Baked Goods ◽  
Cassava Root ◽  
Physico Chemical ◽  
Physical And Chemical ◽  
And Chemical Properties

Quality cassava(Manihotesculentus, Crantz) flour is often influenced by process variables such as slice weight and soaking time which may affect its nutritional quality. In this study, the effect of process variables (slice weight and soaking time) on quality of cassava flour was carried out. Cassava root was peeled, washed and cut into varied sizes (25.86 - 54.14 g) and soaked at varied time (7.03 - 40.97 h). The proximate composition, physical and chemical properties of the flour were carried out using standard methods. The result in our findings showed that slice weight and soaking time had significant increase (p<0.05) on the proximate and physico-chemical properties of the flour.The amylose and amylopectin content of the flour increased with increasing soaking time while the hydrogen cyanide content decreased with increase in soaking time. Overall, the quality cassava flour displayed desirable properties for its incorporation into baked goods.

scholarly journals Pepper root rot resistance and pepper yield are enhanced through biological agent G15 soil amelioration

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11768
Author(s):  
Xuejiang Zhang ◽  
Dazhao Yu ◽  
Hua Wang
Keyword(s):  
Root Rot ◽  
Pathogenic Fungus ◽  
Chemical Properties ◽  
Ammonia Nitrogen ◽  
Biological Agent ◽  
Total Carbon ◽  
And Control ◽  
Physical And Chemical ◽  
Total Potassium ◽  
And Chemical Properties

Pepper root rot is a serious soil-borne disease that hinders pepper production, and efforts are being made to identify biological agents that can prevent and control pepper root rot. Our group recently discovered and produced a biological agent, named G15, which reduces the diversity and richness of fungi and bacteria when applied to pepper fields. In the soil of the G15-treatment condition, the pathogenic fungus Fusarium was inhibited, while the richness of beneficial bacteria Rhodanobacter was increased. Also, the ammonia nitrogen level was decreased in the G15-treatment soil, and the pH, total carbon, and total potassium levels were increased. Compared to the control condition, pepper yield was increased in the treatment group (by 16,680 kg acre−1). We found that G15 could alter the microbial community structure of the pepper rhizosphere. These changes alter the physical and chemical properties of the soil and, ultimately, improve resistance to pepper root rot and increase pepper yield.

scholarly journals Some physical and chemical properties of substrates designed for container production of spruce (Picea abies (L) Karst)

2004 ◽  
pp. 79-90
Author(s):  
Vesna Vratusa
Keyword(s):  
Woody Plants ◽  
Low Cost ◽  
Chemical Properties ◽  
Foreign Markets ◽  
Urban Green Spaces ◽  
Nursery Production ◽  
Countries In Transition ◽  
Physical And Chemical ◽  
And Chemical Properties

Efficient nursery production of woody plants, as well as the level of their successful application in urban green spaces, greatly depends upon properties of substrates in which these individuals grow, develop and endure. Furthermore, quality of substrate does not only affect the quality of future product (plant individual or green space), but distinctly determines its price. This element, extremely significant for all countries in transition, thus Serbia as well, commands finding ways of making qualitative, but least expensive substrate. The most logical solution is to use mixtures/substrates of precisely defined properties, composed of domestic components. Results presented in this paper imply that it is possible to create precisely such standard mixtures from domestic resources at relatively low cost, adjusted to needs of particular species, which would ultimately lead to successful, non-expensive nursery production and application of produced stock, both on domestic and foreign markets.

scholarly journals Effect of Bentonite on the Pelleting Properties of Iron Concentrate

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Hao Liu ◽  
Bing Xie ◽  
Yue-lin Qin
Keyword(s):  
Water Absorption ◽  
Chemical Properties ◽  
Poor Quality ◽  
Physical And Chemical Properties ◽  
Iron Concentrate ◽  
Green Ball ◽  
Shock Temperature ◽  
Physical And Chemical ◽  
And Chemical Properties

The physical and chemical properties such as particle size, montmorillonite content, swelling degree, water absorption, and blue absorption of A, B, and C bentonites were studied under laboratory conditions. The effects of adding different quality and different proportion of bentonite on falling strength, compression strength, and shock temperature of green pellet were investigated. The experimental results show that the montmorillonite content, water absorption, and methylene blue absorption of bentonite-B are the highest. And the quality of bentonite-B is the best, followed by bentonite-C and bentonite-A poor quality. When the amount of bentonite-B reduced from 1.5% to 1.0%, the strength of green pellets and the shock temperature both decrease. As the same proportion of A, B, and C bentonites, the green-ball strength and shock temperature are as follows: bentonite-A > bentonite-B > bentonite-C.

scholarly journals EFEITOS DE DIFERENTES SUBSTRATOS NA PRODUÇÃO DE MUDAS DE Sebastiania commersoniana

FLORESTA ◽  
2013 ◽  
Vol 43 (3) ◽  
pp. 407 ◽  
Author(s):  
Horácia Celina Armando Mula Boene ◽  
Antonio Carlos Nogueira ◽  
Nilton José Sousa ◽  
Dagma Kratz ◽  
Paulo Vitor Dutra de Souza
Keyword(s):  
Chemical Properties ◽  
Pine Bark ◽  
Forest Nursery ◽  
Coconut Fiber ◽  
Technical Feasibility ◽  
Rice Hulls ◽  
Controlled Irrigation ◽  
Physical And Chemical ◽  
And Chemical Properties

O objetivo do presente trabalho foi avaliar a viabilidade técnica da utilização de diferentes substratos para a produção de mudas de Sebastiania commersoniana e relacionar suas características físicas e químicas com a qualidade das mudas produzidas. Para tanto, foram formulados 22 substratos, os quais tiveram suas propriedades físicas e químicas avaliadas, sendo a semeadura realizada em tubetes de 120 cm³, acondicionados em casa de sombra, com irrigação controlada. Para a análise dos resultados, foram feitas avaliações de altura, diâmetro de colo, biomassa seca aérea e radicial, facilidade de retirada do tubete, agregação das raízes ao substrato, índice de qualidade de Dickson e relação altura e diâmetro de colo aos 180 dias. De acordo com os resultados obtidos, conclui-se que o melhor substrato testado foi o substrato comercial à base de casca de pinus. Os componentes renováveis, casca de arroz carbonizada, fibra de coco e substrato comercial à base de casca de pinus, apresentaram-se viáveis tecnicamente para produção de mudas de branquilho, enquanto que a casca de arroz carbonizada pura e vermiculita fina não apresentaram viabilidade. No que se refere às propriedades dos substratos, apenas a densidade aparente, pH, Ca e P apresentaram correlação com as variáveis biométricas das mudas. AbstractEffects of different substrates in production of Sebastiania commersoniana seedling. The aim of this research was to evaluate technical feasibility of using different substrates for production of seedlings of Sebastiania commersoniana and relate physical and chemical characteristics to the quality of the produced seedlings. In order to that, 22 substrates were formulated, with their physical and chemical properties evaluated, sowed in tubes of 120 cc, and put in shade, under controlled irrigation. For the results analysis, it evaluated height, stem diameter, air and radicial biomass, ease of removability, root aggregation to the substrate, Dickson quality index, and relation of height and diameter at 180 days. According to the obtained results, the best substrate tested was the commercial pine bark based substrate. The renewable components, carbonized rice hulls, coconut fiber, and commercial pine bark based substrate presented technical feasibility to produce Sebastiania commersoniana seedlings, on the other hand pure carbonized rice hulls and fine vermiculite did not. Towards the properties of the substrates, only bulk density, pH, Ca, and P correlated with biometric variables of the seedlings.Keywords: Branquilho; carbonized rice hulls; coconut fiber; pine bark; forest nursery.

scholarly journals Vigor and Viability of Cagaita (Eugenia dysenterica DC.) Seeds Subjected to Different Substrates

2020 ◽  
pp. 52-56
Author(s):  
Helber Véras Nunes ◽  
Daniella Inácio Barros ◽  
João Pedro Pereira dos Santos ◽  
Kaio Rodrigues dos Santos de Oliveira ◽  
Bruna Azevedo Barbosa ◽  
...  
Keyword(s):  
Poultry Manure ◽  
Chemical Properties ◽  
Black Soil ◽  
Urban Region ◽  
Brazilian Cerrado ◽  
Federal Institute ◽  
Eugenia Dysenterica ◽  
Physical And Chemical ◽  
And Chemical Properties

Cagaita originates from the Brazilian Cerrado and belongs to the Myrtaceae family. It is a fruit tree and widely disseminated in the Brazilian Cerrado, and can reach up to 10 meters high. To obtain quality seedlings it is necessary to use substrates that have physical and chemical properties suitable for plant development. Also, the quality of the substrate is directly related to the proportions and the material that makes up the mixture. The experiment was conducted in a greenhouse at the Federal Institute of Education (IFTO), Science and Technology of Tocantins, Gurupi/TO city, from November 1, 2017, to February 26, 2018. Cagaita (Eugenia dysenterica DC.) seeds taken directly from the fruit were used to perform the experiment, which was collected in the urban region of Peixe - To in October 2017. Six types of substrates were used for the installation of the experiment, which was: Washed Sand; Washed Sand + Coconut Shell + Black Soil + Poultry Manure; Black Soil; Pine Bark + Poultry Manure + 25% Commercial Substrate Plantmax®; Earthworm Humus + Black Soil + 25% Commercial Substrate Plantmax®; 25% Commercial Substrate Plantmax® + Poultry Manure + Black soil + washed sand. The substrates of earthworm humus + Black Soil + 25% commercial substrate Plantmax® and 25% Commercial Substrate Plantmax® + Poultry Manure + Black Soil + Washed Sand provided the highest values of viability and vigor in Cagaita seeds.

scholarly journals The Efficiency of Calcium Boron and Carpox-K Sprays on Fruit Quality of Washington Navel Orange Trees

2020 ◽  
pp. 23-31
Author(s):  
A. A. EL- Khwaga ◽  
F. M. Abd El- Latif ◽  
M. H. M. Baiea ◽  
S. F. EL- Gioushy
Keyword(s):  
Fruit Quality ◽  
Chemical Properties ◽  
Quality Parameters ◽  
Navel Orange ◽  
Fertilization Program ◽  
Washington Navel ◽  
Orange Fruit ◽  
Physical And Chemical ◽  
Orange Trees

This research was conducted during seasons 2018 & 2019 on nine-years-old Washington navel orange trees. These trees were grafted on Sour orange rootstock, planted at 5 x 5 meters apart, under surface irrigation conditions, in a private orchard at Manzala village, Toukh region, Qalubia Governorate, Egypt. The seven treatments were used for comparison as follows: T1-100% of chemical NPK (NPK fertilization program adopted at 5, 3 and 1 kg/tree from (NH4)2SO4, superphosphate and K2SO4, respectively) according to the Ministry of Agriculture Recommendation (Control or recommended doses RD). T2-RD+Calcium boron 2 cm3 /L; T3-RD+Calcium boron 3 cm3/L; T4-RD+Carpox-K 1g/L; T5-RD+Carpox-K 1.5g/L; T6-RD+Calcium boron 2 cm3 /L +Carpox-K 1g/L, and T7-RD+Calcium boron 3 cm3/L +Carpox-K 1.5g/L.  The main goal of this investigation was directed towards increasing Washington navel orange fruit quality. The obtained data revealed that all investigated treatments increased fruit quality parameters (physical and chemical properties). However, T7- RD + Calcium boron 3 cm3 /L + Carpox-K 1.5g/L was statistically superior. On the contrary, T1- Control or recommended doses (RD) ranked statistically the lowest treatment in this concern. From the obtained results, It can be concluded that the use of RD+ Calcium boron 3 cm3 / L + Carpox-K 1.5g / L or RD+ Calcium boron 2 cm3/ L + Carpox-K 1g / L could be safely recommended under similar environmental and horticultural practises adopted in this experiment.

scholarly journals Anthropogenic Lakes in Czechia

Geografie ◽  
2005 ◽  
Vol 110 (3) ◽  
pp. 210-228
Author(s):  
Tomáš Hrdinka
Keyword(s):  
Chemical Properties ◽  
Lake Basin ◽  
Genetic Groups ◽  
Quality Of Water ◽  
Agriculture Industry ◽  
Number Of Factors ◽  
Nature Preservation ◽  
Physical And Chemical ◽  
And Chemical Properties

Anthropogenic lakes constitute one of the most significant genetic groups of lakes in Czechia. The water quality of these lakes formed through flooding of mined-out pits can be influenced by a number of factors such as physical and chemical properties of exploited rock, characteristics of the mine surroundings, secondary anthropogenic interference and time elapsed since their flooding. The quality of water determines their potential utilization, such as in water supply, agriculture, industry, recreation, nature preservation, etc. This article compares five anthropogenic lakes in mining pits after exploitation of different kind of rocks and on the basis of lake basin characteristics and physical and chemical analysis of water formulates the possibilities of their potential utilization in the context of the local landscape.

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