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Register a new userEffect of Times and Levels of Nitrogen Fertilization on the Characters of Vegetative Growth, Flowering and the Yield of Summer Squash (Cucurbita pepo L.) c.v. Mullah ahmad
تأثير معدلات التسميد الآزوتي و مواعيد إضافته في نمو نبات الكوسا و إزهاره و إنتاجيته (.L pepo Cucurbita) في محافظة نينوى
1993
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أجريت الدراسة في حقل الخضر التابع لقسم البستنة و هندسة الحدائق، كلية الزراعة و الغابات، جامعة الموصل، في ربيع الموسمين الزراعيين (2007 و 2008) لمعرفة تأثير معدلات التسميد الآزوتي و مواعيد إضافته في نمو نبات قرع الكوسا و إزهاره و إنتاجيته (.L pepo Cucurbita) في محافظة نينـوى. أوضحت النتائج أن إضافة السماد الآزوتي في مرحلة عقد الثمار أدت إلى زيادة معنوية في عدد الأوراق/ نبات، و المساحة الورقية، و طول النبات، و وزن النبات الرطب، في حين لم يكن لمواعيد إضـافة الـسماد تأثير معنوي في إنتاجية وحدة المساحة. كما أدت إضافة السماد الآزوتي بمعدل (320 كغ N /هكتار) إلى زيادة معنوية في صفات النمو و إنتاجية وحدة المساحة . و من جهة أخرى أظهرت دراسة العلاقة المتبادلة أن إضافة السماد الآزوتي بمعدل 320 كغ N/هكتار في مرحلة عقد الثمار أعطت أعلى إنتاج محصولي.
This study was conducted at the vegetable field of department of horticulture and landscape design, college of agriculture and forestry ,Mosul university, during spring of 2007 and 2008, to study the effect of times and levels of nitrogen fertilization on some characters vegetative growth, flowering ,and yield of summer squash .Result indicated that, the time of nitrogen fertilization at the stage of fruit-set caused a significant increased in the leaf number /plant ,length of the plant and the fresh weight/plant. While the time of nitrogen fertilization wasn't affected significantly the total yield. The level at 320 kg.N/ha caused a significant increase of the characters vegetative growth and total yield. Also result revealed that, the interaction between the stage at fruit set and nitrogen fertilization at 320 kg.N/ha led to increase the total yield .The yield was found to positively correlation with the plant length ,fresh and dry weights of plant, leaf area, fruit weight, male and female flowers, and the sex ratio.
References used
Al-Mishaal, A. J.; A. G. Behari and A. A. Gallum. (1984). Effect of nitrogen fertilization and spacing between plants on flowering and yield of squash (Cucurbita pepo L.). JAWRR. 3(2): 23-32
Abou-El-Yazeid A.; H. E. Abou-Aly; M. A. Maoly and S. A. M. Mousa. (2007). Enhancing growth productivity and quality of squash plants using phosphate dissolving micro organisms (Bio-phosphors ®) combined with boron foliar spray. Res. Jour. of Agric. and Bio. Sci. 3(4) :274- 289
Chhonkar, V. S.; D. N. Singh and R. L. Singh (1979). Genetic variability and correlation studies in muskmelon. Indian J. Agric. Sic. 49(5):361-363
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This study was conducted at Research Altyba station where belongs
GCSAR during 2007-2008. by using nine parental lines and their 36 F1 hybrids,
were obtained from 9x9 half diallel design. The study included stem, earliness
and yield component char
acters, in order to estimate of hetrerosis compare to
the mid parents, the better parent and to the standard hybrid, and determine
the superior hybrids advantage to invest in agricultural production and benefit
from as well as in breeding program development yield of squash.
Heterosis over mid parent was evident in all yield components, The hybrid
(IL3XIL6) exhibited (16.89 ، 57.57%) respectively for the ratio pistilate flower
% and fruit number per plant, negative heterobeltiosis (-13.71%) was recorded
by the hybrid (IL3XIL8)for the number of nodes to first flower, While the
hybrid (IL3XIL5) showed maximum positive and significant heterobeltiosis
(13.06 %) for ratio pistilate flower%, and the hybrid (IL3XIL6) for fruit
number per plant (59.47 %) Whereas the results showed that, four hybrids had
positive and high significant standard heterosis for plant yield, the hybrid
(IL6xIL7) and (IL3XIL6) had maximum value (32.38, 28.68% ) respectively
In this research, nine inbreed lines of squash (Cucurbita pepo, L) have been
studied during 2007-2008 seasons. The study contains plant phonological
phases, and the most important morphological and productivity characteristics
related to fruit yie
ld to evaluate the characteristics of every line and identify the
economical lines to use it in the breeding programs. The study showed genetic
variation between the groups for some important economic characteristics as
(the number of fruits per plant, percentage of female flowers, yield per plant,
stem long and number of nodes till the first female flower). The study also
showed that the inbreed lines of squash is a rich source of variation and can be
use in a breeding program to product squash hybrid. The results appeared also
the positive correlation between the productivity and some important economic
characteristics, such as percentage of female flowers (r=0.871**), the number of
fruits per plant (r=0.976**). Whereas negative correlation with the nodes till he
first female flower (r=- 0.494) and internodes long (r=- 0.447). Using cluster
analysis, the inbreed lines were classified into 2 distinct classes A and B, Class
A contained seven inbreed wreathe class B contained Tow inbreed lines.
This study was carried out during the growing season of 2015
to study effect od three planting date (1 Feb., 15 Feb. and 1
March) and four levels of nitrogen fertilization (0, 40, 60 and 80
kg/Ha) with interactive effect between them on some yield
components of cumin.
Objective of this work was to investigate how plant density and nitrogen
rate affects the growth , yield and its components in maize (Bassel 2 hybrid).
The experiment was carried out, at the agricultural research centre in Snoubar
Jableh, during t
he 2008 and 2009 seasons, included 12 treatments which were
the combination three plant population densities 71428/ha, 57142/ha, and
47619/ha and four N rates (0, 60, 120 and 180 kg/ha). The experimental design
was a split-plot, with different densities as main plots, randomized in three
complete blocks, and the fertilization as subplots. The data were analyzed by
using “Mstat” statistical package. Increasing planting population density
delayed anthesis and silking date, increased the anthesis-silking interval, plant
height, ear height, grain yield, agronomic nitrogen efficiency and nitrogen use
efficiency, but decreased ear leaf area, chlorophyll content, 1000 seed weight,
number of grains/ear, shelling percentage (%), and grain protein content.
Nitrogen fertilizer decreased tassilling and silking date, and nitrogen use
efficiency, increasing plant and ear height, ear leaf area, chlorophyll content,
number of grains/ear, ear weight,1000-grains weight, Shelling percentage,
grain yield up to 120 kg N/ha, agronomic nitrogen efficiency and grain protein
content.
This search was conducted in Albassa town at Lattakia governorate , during 2011
and 2012 growing seasons for study effects of 3 sowing dates ( 15th of April , 25th of April
and 5th of May ) and 4 levels of nitrogen fertilization ( N1: control , N2:
50 kg/ha , N3: 100
kg/ha , N4: 150 kg/ha ) on several attributes of groundnut (Coastal category) production .
The results showed that the 5th of May sowing date had significant excel in the
average of the two growing seasons in dry weight of pods in plant , wheight 100- Seeds,
The per-hectare yield of seeds and Harvest index , It ranked first in the two seasons search.
Also, The application of nitrogen fertilizer at a rate of 150 kg/ha had resulted in a
significant increase in studied productivity traits in the average of the two growing
seasons , Except for harvest index , which was at least as compared to other levels of
fertilization.
The interaction between the sowing date ( 5th of May ) and the level of nitrogen
fertilization (150 kg/ha) showed a significant excel in the average of the two growing
seasons in dry weight of pods in plant , wheight 100- Seeds and The per-hectare yield of
seeds .
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