scholarly journals A New Local Sustainable Inorganic Material for Soilless Culture in Spain: Granulated Volcanic Rock

HortScience ◽  
2014 ◽  
Vol 49 (12) ◽  
pp. 1537-1541 ◽  
Author(s):  
Judith Pozo ◽  
Juan E. Álvaro ◽  
Isidro Morales ◽  
Josefa Requena ◽  
Tommaso La Malfa ◽  
...  
Keyword(s):  
Volcanic Rock ◽  
Sweet Pepper ◽  
Fruit Production ◽  
Pollutant Emissions ◽  
Limiting Factor ◽  
Vegetable Crops ◽  
Physical Chemical ◽  
Geological Origin ◽  
The University

Volcanic rock has been used for decades as a horticultural substrate worldwide. In Spain, the use of this material as a substrate is ancient; it was initially used in the Canary Islands because of its volcanic geological origin. At the University of Almería (Almería, Spain), three independent vegetable crops were grown under greenhouse conditions: sweet pepper, tomato, and melon. The volcanic rock came from a location in the geographic center of Spain, which facilitated logistics. Bags of volcanic rock (25 L) were used and were compared with a commercial coconut fiber substrate of an equal volume. All physical, physical–chemical, and chemical parameters of the volcanic rock were determined using European standard analytical procedures. Fertigation was applied, independently adapted to the physical, physical–chemical, and chemical characteristics of each substrate. The cultures were performed under a randomized complete block experimental design. Fertigation parameters, pollutant emissions, fruit production, and the quality of each culture were measured. The results showed that the assessed parameters of the volcanic rock substrate are not a limiting factor for its use as a horticultural substrate. The resultant production and quality were very similar among the three crops compared with a widely used commercial control. Therefore, volcanic rock emerges as a local, sustainable alternative to be used for soilless crop cultivation.

scholarly journals Calidad del agua de distribución en un Centro Universitario rural sin procesos de desinfección de la Universidad de Guadalajara, México

2019 ◽  
pp. 12-20
Author(s):  
Javier GARCÍA-VELASCO ◽  
Tania VILLASEÑOR-VARGAS ◽  
Josefina CASAS-SOLÍS ◽  
Aurora ROSAS-RAMÍREZ
Keyword(s):  
Water Quality ◽  
Water Treatment ◽  
Quality Index ◽  
Storage Tanks ◽  
Chemical Waste ◽  
University Center ◽  
Is Research ◽  
Physical Chemical ◽  
The University

The University Center of Biological and Agricultural Sciences (CUCBA) of the University of Guadalajara receives approximately 5700 students, and 1500 of the academic, administrative and visiting staff. The CUCBA is research oriented, therefore, large amount of chemical waste and microbial load is generated by health services. There are two sources of water supply that provide quality drinking water to the student population and two water treatment plants that process the wastewater produced. The objective of this study was to evaluate the physical chemical and bacteriological quality of the water from the sources of supply, storage tanks, distribution network and principals points of use as an area of food and drinkers, as well as the wastewater emitted in triplicate. The water quality index was calculated, and regular values of the water quality of the 10 sampled points were found, and it is noted that, the sampling points with the lowest quality index were the water that leaves the plants of Water treatment, therefore, is not being accomplished with proper water purification.

Biopesticides And Biofertigation Practice to Overcome Land Fertility and Plants Cultivation Problems in Magetan District

2019 ◽  
Vol 2 (1) ◽  
pp. 7-11
Author(s):  
Indriya Radiyanto ◽  
Siswanto Siswanto ◽  
Indra Tjahaya Amir
Keyword(s):  
Small And Medium Enterprises ◽  
Organic Fertilizer ◽  
Environmentally Friendly ◽  
Fruit Fly ◽  
Skills Training ◽  
Fruit Production ◽  
Vegetable Crops ◽  
Economic Activities ◽  
Pests And Diseases

Magetan Regency is one of the leading fruit production centers (Pamelo Oranges) and vegetables in East Java.   Production of Pamelo orange as a superior product of Magetan regency, during the last 10 years tends to decrease both in terms of quantity and quality.   This is as a result of fruit fly pest attack is quite massive and viral; as well as vegetable crops that still depends on pesticide and chemical fertilizers. Quantity and quality of fruit and vegetable products are still not optimal because: 1). There are still pests and diseases that can not be controlled in an environmentally friendly manner, 2) The cultivation of pamelo and vegetable plants in Magetan regency has not been fully applied organic fertilizer intake, 3). Gardening irrigation technology still relies on rain water and semi-technical irrigation. The objective of the action research through Community Partnership Program (CPP) is to provide a touch of science and technology that is expected to accelerate the creative economic activities of the community by providing skills training based on organic materials including: 1. The utilization of yard land by planting vegetables;  2. The production soil enhancer;  3. Production of urine-based biopesticide ;  4.  Simple book keeping practice  in small-medium scale agriculture, and 5.  Production of Pamelo orange-based food. The methods used in facilitating the improvement of skills of farmers and dairy farmers joined in micro small and medium enterprises including lecture, field practice and mentoring. The result of  activities is expected to be able to: a). improve farmers skills in good plant care through integrated pest and disease control and organic based fertilization through fertigation. b). Make environmentally friendly fertilizers and pesticides independently. c). Increasing the production and quality of agricultural products. d). Innovative organic biofertilizers products.

scholarly journals PRODUCTION, PHYSICAL-CHEMICAL QUALITY AND BIOATIVE COMPOUNDS OF MISTY BLUEBERRY FRUIT UNDER DIFFERENT PRUNING INTENSITIES

2017 ◽  
Vol 39 (spe) ◽  
Author(s):  
GISELY CORREA DE MOURA ◽  
◽  
MARCIA VIZZOTTO ◽  
LUCIANO PICOLOTTO ◽  
LUIS EDUARDO CORRÊA ANTUNES ◽  
...  
Keyword(s):  
Fruit Size ◽  
Titratable Acidity ◽  
Fruit Production ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Yield And Quality ◽  
Physical Chemical ◽  
Total Titratable Acidity ◽  
Phytochemical Compounds

ABSTRACT The objective of this study was to evaluate the effect of pruning intensity on yield and quality of blueberries fruits. It was evaluated the cultivar Misty. The treatments were: absence of pruning; light pruning; regular pruning and drastic pruning. The experimental design was randomized blocks with four replications. The variables analyzed were fruit production, fruit size, pH, total soluble solids (TSS) and total titratable acidity (TTA), and the bioactive compounds such as phenolic compounds, anthocyanins and antioxidant activity. The plants that received drastic pruning showed higher averages of production and fruit size. The highest concentrations of phytochemical compounds in blueberry fruits occurred as pruning was more drastic. The use of different intensity of pruning can modify the productive behavior and postharvest quality of fruits.

scholarly journals PRODUCTION, PHYSICAL-CHEMICAL QUALITY AND BIOATIVE COMPOUNDS OF MISTY BLUEBERRY FRUIT UNDER DIFFERENT PRUNING INTENSITIES

2017 ◽  
Vol 39 (spe) ◽  
Author(s):  
GISELY CORREA DE MOURA ◽  
MARCIA VIZZOTTO ◽  
LUCIANO PICOLOTTO ◽  
LUIS EDUARDO CORRÊA ANTUNES
Keyword(s):  
Fruit Size ◽  
Titratable Acidity ◽  
Fruit Production ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Yield And Quality ◽  
Physical Chemical ◽  
Total Titratable Acidity ◽  
Phytochemical Compounds

ABSTRACT The objective of this study was to evaluate the effect of pruning intensity on yield and quality of blueberries fruits. It was evaluated the cultivar Misty. The treatments were: absence of pruning; light pruning; regular pruning and drastic pruning. The experimental design was randomized blocks with four replications. The variables analyzed were fruit production, fruit size, pH, total soluble solids (TSS) and total titratable acidity (TTA), and the bioactive compounds such as phenolic compounds, anthocyanins and antioxidant activity. The plants that received drastic pruning showed higher averages of production and fruit size. The highest concentrations of phytochemical compounds in blueberry fruits occurred as pruning was more drastic. The use of different intensity of pruning can modify the productive behavior and postharvest quality of fruits.

scholarly journals Establishment of Technological Stages for Obtaining Some Grafted Tomato Seedlings (Dutch Scion × Romanian Rootstocks)

2019 ◽  
Vol 76 (1) ◽  
pp. 143
Author(s):  
Dorin SORA
Keyword(s):  
Abiotic Factors ◽  
Fruit Production ◽  
Vegetable Crops ◽  
Silicone Tube ◽  
Tomato Cultivar ◽  
F1 Hybrid ◽  
Tomato Seedlings ◽  
Solanum Lycopersicum L ◽  
Vegetative Multiplication

The tomatoes are valuable vegetables, with highest share in Romanian crops from protected spaces. The grafting is a vegetative multiplication method that induces or improves some qualities of the plants (vigor, resistance to soil diseases and pests, resistance to abiotic factors, quantity and quality of fruit production). The research aim has been to establish the technological stages for producing of Dutch scion and Romanian rootstock seedlings from Solanum lycopersicum L. species, to obtain some compatible phenotypes for grafting. This research has been conducted in a greenhouse of the Horting Institute Bucharest. The experience was carried out on a tomato cultivar collection consisting from a Dutch scion (‘Abellus’ F1 hybrid) and three Romanian rootstocks (‘L542’, ‘L543’, ‘L544’). The scion and rootstock diameters have been correlated for manual grafting, cutting at 45 degrees and using the method of splice in silicone tube. The technological stages for obtaining grafted tomatoes have been established for the researched genotypes. These tomato combinations have been compatible for vegetable crops in protected spaces in the south area of Romania.

scholarly journals Recovery of 15N Labeled Nitrogen Fertilizer by Fertigated and Drip Irrigated Greenhouse Vegetable Crops

Agronomy ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 741 ◽  
Author(s):  
Carolina Martínez-Gaitán ◽  
María Rosa Granados ◽  
María Dolores Fernández ◽  
Marisa Gallardo ◽  
Rodney B. Thompson
Keyword(s):  
Vegetative Growth ◽  
Irrigation Management ◽  
Fertilizer Application ◽  
Sweet Pepper ◽  
Fruit Production ◽  
N Fertilizer ◽  
Soil Parameters ◽  
Vegetable Crops ◽  
Mineral N ◽  
Conventional Management

The stable isotope 15N was used to assess the recovery of mineral N fertilizer applied to fertigated and drip-irrigated spring muskmelon and autumn-winter sweet pepper crops grown in greenhouse soil plots. They received 92–96% of mineral N fertilizer as NO3−. 15N-labeled Ca (NO3)2 fertilizer was applied to crops during vegetative growth and fruit production phases. Crops were grown with either conventional management or combined improved N and irrigation management. Improved management for both irrigation and N was based on the combined use of models, to estimate crop requirements, and of monitoring of soil parameters. In sweet pepper, from conventional management, 15N recoveries from the 15N applications made during vegetative growth and fruit production were 66% and 58%, respectively. With improved management in sweet pepper, the corresponding 15N recoveries were 82% and 77%. In muskmelon, 15N recoveries from conventional management from the 15N applications made during vegetative growth and fruit production were 71% and 42%, respectively. With improved management, the corresponding 15N recoveries were 68% and 44%, respectively. The results demonstrated that combined drip irrigation and fertigation systems with frequent irrigation and N fertilizer application can have very high recovery of applied N fertilizer, of 77–82%.

Epistemic and relational conflicts in sharing identical vs. complementary information during cooperative learning

2002 ◽  
Vol 61 (3) ◽  
pp. 139-151 ◽  
Author(s):  
Céline Darnon ◽  
Céline Buchs ◽  
Fabrizio Butera
Keyword(s):  
Cooperative Learning ◽  
Social Comparison ◽  
Positive Relationship ◽  
Learning Task ◽  
Control Group ◽  
Complementary Information ◽  
Relational Conflict ◽  
The Social ◽  
The University

When interacting on a learning task, which is typical of several academic situations, individuals may experience two different motives: Understanding the problem, or showing their competences. When a conflict (confrontation of divergent propositions) emerges from this interaction, it can be solved either in an epistemic way (focused on the task) or in a relational way (focused on the social comparison of competences). The latter is believed to be detrimental for learning. Moreover, research on cooperative learning shows that when they share identical information, partners are led to compare to each other, and are less encouraged to cooperate than when they share complementary information. An epistemic vs. relational conflict vs. no conflict was provoked in dyads composed by a participant and a confederate, working either on identical or on complementary information (N = 122). Results showed that, if relational and epistemic conflicts both entailed more perceived interactions and divergence than the control group, only relational conflict entailed more perceived comparison activities and a less positive relationship than the control group. Epistemic conflict resulted in a more positive perceived relationship than the control group. As far as performance is concerned, relational conflict led to a worse learning than epistemic conflict, and - after a delay - than the control group. An interaction between the two variables on delayed performance showed that epistemic and relational conflicts were different only when working with complementary information. This study shows the importance of the quality of relationship when sharing information during cooperative learning, a crucial factor to be taken into account when planning educational settings at the university.

Evaluation of the Academic Setting in Spain 1This study was financed by the University of Oviedo.

1995 ◽  
Vol 11 (2) ◽  
pp. 133-137 ◽  
Author(s):  
Juan Fernández ◽  
Miguel A. Mateo ◽  
José Muñiz
Keyword(s):  
Higher Education ◽  
Decision Making ◽  
Social Climate ◽  
Three Dimensions ◽  
Academic Setting ◽  
Teaching And Research ◽  
Evaluation Questionnaire ◽  
University Teachers ◽  
The University

The conditions are investigated in which Spanish university teachers carry out their teaching and research functions. 655 teachers from the University of Oviedo took part in this study by completing the Academic Setting Evaluation Questionnaire (ASEQ). Of the three dimensions assessed in the ASEQ, Satisfaction received the lowest ratings, Social Climate was rated higher, and Relations with students was rated the highest. These results are similar to those found in two studies carried out in the academic years 1986/87 and 1989/90. Their relevance for higher education is twofold because these data can be used as a complement of those obtained by means of students' opinions, and the crossing of both types of data can facilitate decision making in order to improve the quality of the work (teaching and research) of the university institutions.

Development of the University of Toronto Skull Base Inventory (UT-SBI) Quality-of-Life Questionnaire

Skull Base ◽  
2009 ◽  
Vol 19 (03) ◽  
Author(s):  
John de Almeida ◽  
Allan Vescan ◽  
Jolie Ringash ◽  
Patrick Gullane ◽  
Fred Gentili ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Skull Base ◽  
Life Questionnaire ◽  
Quality Of Life Questionnaire ◽  
University Of Toronto ◽  
The University

Klasifikasi Tahap Kematangan Pisang Ambon Berdasarkan Warna Menggunakan Naive Bayes

2018 ◽  
Vol 5 (2) ◽  
pp. 60-67 ◽  
Author(s):  
Dwi Yulianto ◽  
Retno Nugroho Whidhiasih ◽  
Maimunah Maimunah
Keyword(s):  
Naive Bayes ◽  
Fruit Production ◽  
Naïve Bayes ◽  
Primary Data ◽  
Banana Fruit ◽  
Bayes Method ◽  
Classification Image ◽  
Average Accuracy ◽  
The Government

ABSTRACT   Banana fruit is a commodity that contributes a great value to both national and international fruit production achievement. The government through the National Standardization Agency establishes standards to maintain the quality of bananas. The purpose of this Project is to classify the stages of maturity of Ambon banana base on the color index using Naïve Bayes method in accordance with the regulations of SNI 7422:2009. Naive Bayes is used as a method in the classification process by comparing the probability values generated from the variable value of each model to determine the stage of Ambon banana maturity. The data used is the primary data image of 105 pieces of Ambon banana. By using 3 models which consists of different variables obtained the same greatest average accuracy by using the 2nd model which has 9 variable values (r, g, b, v, * a, * b, entropy, energy, and homogeneity) and the 3rd model has 7 variable values (r, g, b, v , * a, entropy and homogeneity) that is 90.48%.   Keywords: banana maturity, classification, image processing     ABSTRAK   Buah pisang merupakan komoditas yang memberikan kontribusi besar terhadap angka produksi buah nasional maupun internasional. Pemerintah melalui Badan Standarisasi Nasional menetapkan standar untuk buah pisang, menjaga mutu  buah pisang. Tujuan dari penelitian ini adalah klasifikasi tahapan kematangan dari buah pisang ambon berdasarkan indeks warna menggunakan metode Naïve Bayes  sesuai dengan SNI 7422:2009. Naive bayes digunakan sebagai metode dalam proses pengklasifikasian dengan cara membandingkan nilai probabilitas yang dihasilkan dari nilai variabel penduga setiap model untuk menentukan tahap kematangan pisang ambon. Data yang digunakan adalah data primer citra pisang ambon sebanyak 105. Dengan menggunakan 3 buah model yang terdiri dari variabel penduga yang berbeda didapatkan akurasi rata-rata terbesar yang sama yaitu dengan menggunakan model ke-2 yang mempunyai 9 nilai variabel (r, g, b, v, *a, *b, entropi, energi, dan homogenitas) dan model ke-3 yang mempunyai 7 nilai variabel (r, g, b, v, *a, entropi dan homogenitas) yaitu sebesar 90.48%.   Kata Kunci : kematangan pisang,  klasifikasi, pengolahan citra

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