Journal of Applied Science and Agriculture The Study

Journal of Applied Science and Agriculture, 9(10) August 2014, Pages: 1-4
AENSI Journals
Journal of Applied Science and Agriculture
ISSN 1816-9112
Journal home page: www.aensiweb.com/JASA
The Study of Planting Density on Agronomical Traits of Rapeseed Cultivar
1
1
2
Sayed Amir Abbas Mousavi and 2Ali KiaLashaki
Department of Agriculture, Nowshahar Branch, Islamic Azad University, Nowshahar, Iran.
Department of forestry, Nowshahar Branch, Islamic Azad University, Nowshahar, Iran.
ARTICLE INFO
Article history:
Received 15 April 2014
Received in revised form 22 May
2014
Accepted 25 May 2014
Available online 15 July 2014
Keywords:
Rapeseed cultivar ,Yield
Planting density
ABSTRACT
To determine the effect of seeding rate on winter rapeseed cultivars and evaluate their
performance in terms of the components tested treatments ha seed rate and cultivar,
Factorial experiment in a randomized complete block design with three replications, in
which the seed of the three levels, rate of 10, 7 and 4 kg of seeds per hectare and the
three levels of variety, goliath, Option 500, Hyola308 crops in the region of Chaloos of
Iran (2012-2013). Results showed that mean comparisons, dates indicated that the
highest grain yield in this study, variety of Option 500 with an average of 2889 (kg.ha -1)
and with seed treatments 7(kg.ha-1), and the result is minimum grain yield in this study ,
variety of Hyola-308 with an average of 1534(kg.ha-1) and with seed treatments 7
(kg.ha-1). most of seed oil obtained in verity of Option 500 with an average of
122.4(kg.ha-1) and with seed treatments 7 (kg.ha-1) , and The result is minimum grain
yield in this study , variety of Hyola 308 with an average of 522.3 (kg.ha-1)and with
seed treatments 10(kg.ha-1).
© 2014 AENSI Publisher All rights reserved.
To Cite This Article: Sayed Amir Abbas Mousavi and Ali KiaLashaki., The Study of Planting Density on Agronomical Traits of Rapeseed
Cultivar. J. Appl. Sci. & Agric., 9(10): 1-4, 2014
INTRODUCTION
Canola (Brassica napus L.) has recently been introduced to Iran hoping to overcome oil deficiency. Little, if
any, is known about agricultural practices to maximize canola oil production in Iran. Sowing time is an
important factor that determines the length of growing season and hence yields. If planted in spring, they can be
grown as summer crop but the seed yield would be decreased due to short growing season and lack of enough
water at the end of growing season, thus, winter cropping is preferred (Mahmoodi et al., 2013). Early spring
sowing of oil canola delayed flowering and reduced reflection of radiation during flowering which were
important factors leading to the highest yields achieved by late sowing (Jenkins and Leitch, 1986 ; Abul et al.,
2013). In oilseed rape, row spacing or plant density vary considerably worldwide, depending on the
environment, production system and cultivar. Previous studies have shown that plant density is an important
factor affecting rapeseed yield. Plant density in rapeseed governs the components of yield, and thus the yield of
individual plants. A uniform distribution of plants per unit area is a prerequisite for yield stability (Diepenbrock
2000 ; Khodadadi et al., 2013). Al Barzinjy et al (1999) investigated the effects of different plant densities
ranging from 20 to 130 plants/m2 in rapeseed. They concluded that pods per plant, seed weights and dry matter
per plant decreased as plant density increased. Leach et al. (1999) also reported that plants grown at high density
had fewer pod-bearing branches per plant but produced more branches and that with an increase in density
1000-seed weight increased (Miri et al., 2013). The same researchers also observed that there was no effect of
density on seed oil content. Rapeseed is sometimes grown in rows with spacing wide enough to allow for
mechanical cultivation. In most areas where herbicides are used, the crop is either broadcast seeded or planted in
drill rows spaced 15–20 cm apart (Lewis and Knight, 1987 ; Fardous et al., 2013).Rapeseed has generally slight
or inconsistent seed yield responses to various row spacing's. Therefore, optimum densities for each crop and
each environment should be determined by local research. However, there are no published research data on the
plant density response of rapeseed in the region of chaloos, Iran. The objective of this study was to evaluate
effects of seed rate on agronomical traits of winter rapeseed cultivar (Brassica napus L.)
MATERIAL AND METHODS
In this field experiment was conducted in 2012-2013 in Chaloos of Iran. Farm according to the weather, the
weather hot and humid regions of with mild winters and hot summers and temperate and humid tropical areas is
public. To determine the effects of seed rate on yield components of three cultivars of rapeseed fall and planting
Corresponding Author: Sayed Amir Abbas Mousavi, Department of Agriculture, Nowshahar Branch, Islamic Azad
University, Nowshahar, Iran.
2
Sayed Amir Abbas Mousavi and Ali KiaLashaki, 2014
Journal of Applied Science and Agriculture, 9(10) August 2014, Pages: 1-4
them in the test treatments and variety, Factorial experiment in randomized complete block design in three
replicates in which the seed rate in 3 levels: 10, 7, 4 Kg/ha in 3 levels and varieties, including goliath, Option
500, Hyola308. At the end of the growing season, to determine the agronomic characteristics of each
experimental plot, 10 plants were randomly selected and their characteristics were measured. According to
statistical data model factorial design in randomized complete block analysis of variance was simple and means
comparison using Duncan's multiple range tests was performed. Comparison of data for analysis and statistical
software SPSS and Excel software was used for drawing diagrams.
RESULTS AND DISCUSSION
Grain Yield:
Grain Yield of rapeseed is the most important traits, can be affected in varieties, different treatments and
different climates and the volatility is large (Shirani rad et al., 2005). In mean comparison of Varieties was
found that the varieties in comparison with the average Option 500 2662 (Kg.h -1) maximum and Hyola308
varieties and with an average 1671 (Kg.h-1) had the lowest grain yield. This is difference a significant between
the varieties (table 1). In the mean comparison seed rate on yield of varieties of the highest with an average
23.85 (7 Kg.h-1 / seed) abtained (table 1). In comparison it was found that the average interaction between
variety and seed rate, the highest grain yield in this study , Option 500 , with an average figure of 2889 (Kg.h -1)
and seed treatments of (Kg.h-1) and his traits determines the minimum amount Hyola 308 with an average of
1534 (Kg.h-1) and seed rate of 10 (Kg.h-1) earned. Chen et al, The study of four different concentrations of 1,3,6
and 9 plants per square foot of rapeseed ,Three planting dates , they observed an increase in density to 32 plants
per square meter increased performance, But was observed with the increasing density of the reduced
performance. The highest yield on 16 April and the density was 32 plants per square meter (Chen et al., 2008 ;
Abdullah et al., 2013 ; Etemadi et al., 2013).
The length of pods per plant:
The results showed that the simple effect of seed rate on the length of pods per plant is significant at the 5
percent level of probability (p<0.05). Also the interaction of cultivar and seeding rate on rapeseed length of pods
per plant were not significant. The comparison showed that the mean number Hoyla301 with average 7.1 (mm)
maximum and varieties Goliath with an average of 6.8 (mm) minimum length of pods per plant were accounted
(Table1).
Table 1: Mean Comparison the effect of cultivars and seed rate on some canola agronomic traits.
Treatment
Grain Yield
The length of pods per
Number of seeds per
(Kg.ha-1)
plant
pod
Variety(A)
Goliath
2525a
6.8ab
Option 500
2662b
6.6a
Hyola308
1671a
7.1b
Seed rate(B)
10 kg/ha
2122a
16.9a
7 Kg/ha
2385b
18.1b
4 Kg/ha
2352b
18.1b
Variety* Seed rate(AB)
A1B1
2213b
A1B2
2613cd
A1B3
2749cd
A2B1
2620cd
A2B2
2889d
A2B3
2479bc
A3B1
1534a
A3B2
1653a
A3B3
1827a
Significant (M.S)
A
**
*
Ns
B
**
Ns
**
A*B
**
Ns
Ns
CV%
8.1
4.9
4.7
Means with similar letter were not significant at the 5% probability level.
Levels of significant:* =P< %5, **= P<%1 and NS = not significant
Height
plant(cm)
157.9a
152.9b
157.9c
155.4a
145.0b
146.4b
**
**
NS
3.2
Number of seeds per pod:
The results showed that the simple effect of seed rate on number of seeds per pod is significant at the one
percent level of probability (p<0.01). Also the interaction of cultivar and seeding rate* cultivar on number of
seeds per pod were not significant. Compared to the average seeding rate effects on number of seeds per pod,
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Sayed Amir Abbas Mousavi and Ali KiaLashaki, 2014
Journal of Applied Science and Agriculture, 9(10) August 2014, Pages: 1-4
with the highest density of 4 kg of seeds per acre with an average pod of 18.1 and on number of seeds per pod in
plant and minimum density of 10 kg seed ha with an average of 16.9 was achieved (Table 1).
Height of plant:
Simple variance analysis showed that Simple effect of varieties and planting distance on plant height was
significant at the one percent level (P<0.01). And in the critical area is the normal distribution, the interaction
between cultivars and planting the rapeseed plant height is not significant. Mean comparison Varieties showed
that the Hyola308 compared with the average 157.9cm maximum height to be allocated (table 1). Compared to
the average effect of seeding rates on plant height, plant height maximum density of 10 (kg.ha-1/seed) with an
average height of 155.4 cm and a minimum height of 7 kg of seed density with mean 145 cm obtained (Table 1).
Momoh et al, In the experiment conducted on rapeseed noted that the density of the wing Wires and degradation
of chlorophyll in the plant increased and this increase in mortality from competing And the result is a drop in
performance (Momoh E.J. et al., 2003 ; Khodadadi et al., 2013(.
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