Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userProduction Functions of Vegetables grown under Plastic Houses in High Lands in Jordan
دالات الإنتاج لزراعة الخضر المحمية في مناطق المرتفعات / الأردن
1090
0 60
0
(
0
)
Authors
رسمي شاكر السويطي( باحث )
Created by
Shamra Editor
Ask ChatGPT about the research
هدف البحث إلى التعرف على المستوى الأمثل لعناصر الإنتاج في زراعة الخضر المحمية في مناطق المرتفعات و التي تشمل كلا من: الخيار/ الزراعة الأولى، الخيار/ الزراعة الثانية، الفاصولياء و الفلفل الحلو، و لتحقيق هدف البحث فقد تم استخدام دالة الإنتاج لعناصر الإنتاج المختلفة و ذلك من خلال بيانات لعينة ممثلة من المزارعين في مناطق الدراسة.
The research aimed to recognize the optimal level of Inputs used for vegetables grown under plastic houses in highlands. These vegetables included cucumber in first and second sowing, green beans, and sweet pepper. To realize this objective, production function analysis was used for representative sample of farmers in the area.
References used
التاجي، نبيل ١٩٧٨ ، الزراعة المحمية، مديرية البحث والإرشاد الزراعي، وزارة الزراعة، عمان – الأردن.
الحنيطي، دوخي ١٩٩٤ ، تحديد النمط المحصولي الأمثل لمزارع البيوت البلاستيكية في ثلاث مناطق زراعية مختلفة في الأردن، رسالة ماجستير غير منشورة، الجامعة الأردنية.
السويطي، رسمي. علوش، عرفان. محمد، معتوق ١٩٨٥ ، مشروع تطوير بيانات تكاليف الإنتاج للدول العربية، الخرطوم، تشرين أول.
rate research
Read More
The objective of the research aimes to estimate the optimum amount of
output to produce from vegetables grown under plastic houses. The vegetables
include tomatoes, green beans, cucumber, hot pepper, and sweet pepper in the
Jordan Valley regions,
However, cost function analysis was used in this
research, average variable cost and marginal cost are derived from total cost
function for each crop in each region.
The optimum amount of out put to produce can be determined by equating
marginal cost with price of product. The break even can be estimate by
equating the price of product with the minimum average variable cost.
The research aimed to identify the degree of application to
managerial functions by the heads of departments in the directorates of
education in Jordan from their point of view, and the effect of academic
qualification and experience. To achieve the aim of the study, the tools
study was applied on a sample consisted of (442) persons.
An experiment was conducted in a greenhouse growing tomato plant in sand nutrient
culture with variable ratios of Ca:Mg and potassium in the nutrient solution. The aim was
to evaluate productivity parameters and marketable fruit production. The exp
eriment
consisted of four Ca:Mg ratios (4:6, 5:5, 7.5:2.5, and 10:0.5 mM/L-1), along with three K
concentrations 0.5, 3, and 4.5 mM/L-1 in the nutrient solution. There were 12 treatment
each has three replicates.
In spite of the increase in weight and volume of fruits with increasing Ca:Mg ratios and
potassium concentrations, the increase in fruit number on the plant with increasing Ca:Mg
ratio to (5:5) and 6 mM K has the main effect on plant productivity and marketable fruits.
In this treatment plants produced 49 fruit/plant resulted from 5 fruit punches. Most of the
physiological disorder symptoms spread on fruits was blotchy shoulders, which was
associated directly with low potassium concentration in the growth medium, which
negatively influenced the marketable fruit production.
Root rot is considered one of the serious widely spread tomato diseases in
plastic houses culture of Syria. Soil solarization, using transparent polyethylene
(PE) covering, was applied during July and August (١٩٩٤-١٩٩٦) in Tartoos
governorate for
controlling soilborne pathogenic fungi. Results indicated that,
native fungal populations in covered moist soil supplied with or without sulfur
were significantly reduced in comparison with the uncovered treatment.
The research was conducted on hybrid Squash (Nancy F1) at Tishreen University in
the growing season of spring 2013 in order to study the effect of ground covering and low
tunnels on the early production of squash. The study consisted of four experi
mental
treatments: the control (without covering) and three covering treatments (ground covering
using black mulch, ground covering with a low plastic tunnel, and a low plastic tunnel
without ground covering). The completely randomized design was used with three
replications per treatment and ten plants per replication. The results showed that the
covering with a low plastic tunnel was superior to other treatments, resulting in a clear
increase in female flowers, the ratio of female flowers to the total flowers, fruit number,
and plant production. The results also showed a strong positive correlation between the
plant production and the number of female flowers (r=0.999), the number of fruit per plant
(r=0.999), the ratio of female flowers to the total flowers (r=0.990) and the total number of
flowers (0.995). The correlation with male flowers was however negative (r=-0.954).
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
