A quantitative analysis of the effects of nitrogen on the growth, development and yield of oilseed rape

1972 ◽  
Vol 78 (2) ◽  
pp. 315-324 ◽  
Author(s):  
E. J. Allen ◽  
D. G. Morgan
Keyword(s):  
Quantitative Analysis ◽  
Oilseed Rape ◽  
Growth Rates ◽  
Seed Weight ◽  
Growth And Yield ◽  
Pod Development ◽  
Growth Development ◽  
Low Levels ◽  
High Yields ◽  
Number Of Seeds

SUMMARYTwo experiments carried out in 1968 and 1969 are described which examined, through growth and yield analysis, the effect of nitrogen on the growth of oilseed rape. The results of the second experiment, when 0, 105·5 and 211·0 kg N/ha were compared, are presented and discussed. The application of nitrogen increased the yields of seed and oil, principally through increased production of seeds by a larger number of pods. However, the application of nitrogen had little effect on average pod weight or average seed weight. Crop growth rates were increased by the application of nitrogen and reached their highest levels during the period of pod development when the leaf areas had declined to very low levels. The order of effects of nitrogen (N 2 > Nl > NO) was similar for LAI, number of pods per plant and number of seeds per pod and it is likely that the effect of nitrogen was achieved indirectly through an increase in the supply of assimilates to the flowers and young pods. This suggests that the maintenance of a large and photosynthetically efficient leaf area during the period of flowering is necessary for high yields in this crop.The results also suggest that once pods are macroscopic they produce much of the assimilates needed for their own growth.The implications of these findings with regard to both practice and further research are discussed.

scholarly journals GROWTH AND YIELD EVALUATION OF MUSTARD VARIETIES GROWN IN A MEDIUM HIGHLAND OF KHULNA REGION

2021 ◽  
Vol 18 (1) ◽  
pp. 1-8
Keyword(s):  
Seed Weight ◽  
Harvest Index ◽  
Block Design ◽  
Growth Yield ◽  
Growth And Yield ◽  
Rabi Season ◽  
Yield Attributes ◽  
Randomized Complete Block Design ◽  
Stover Yield ◽  
Number Of Seeds

The present research was conducted at the experimental field of Agrotechnology Discipline, Khulna University, Khulna during Rabi season 2016-17 to investigate the growth and yield performance of mustard varieties. The experiment was arranged in a randomized complete block design consisting of eight mustard varieties (viz. BARI Sarisha-8, BARI Sarisha-11, BARI Sarisha-13, BARI Sarisha-14, BARI Sarisha-15, BARI Sarisha-16, Rai and Tori-7) as treatment and replicated thrice. All the growth, yield attributes and yield were substantially influence among the mustard varieties except the phenological parameters. Results of the experiment showed that the highest plant height (131.33 cm), seed yield (1813.33 kg ha-1) and stover yield (3876.67 kg ha-1) were found in BARI Sarisha-16. BARI Sarisha-11 was found better in respect of maximum siliqua plant-1, weight of seeds plant-1, 1000-seed weight and harvest index. Besides this, BARI Sarisha-14 showed the maximum number of seeds siliqua-1. Therefore, findings of this study suggested that BARI Sarisha-16 would be suitable for better productivity and recommended for cultivation in the medium highland of Khulna region of Bangladesh.

scholarly journals Estimation of heterosis for yield-related traits for single cross and three-way cross hybrids of oilseed rape (Brassica napus L.)

Euphytica ◽  
2019 ◽  
Vol 215 (10) ◽  
Author(s):  
Joanna Wolko ◽  
Agnieszka Dobrzycka ◽  
Jan Bocianowski ◽  
Iwona Bartkowiak-Broda
Keyword(s):  
Brassica Napus ◽  
Oilseed Rape ◽  
Seed Yield ◽  
Seed Weight ◽  
Single Cross ◽  
Positive Heterosis ◽  
Silique Length ◽  
Thousand Seed Weight ◽  
Number Of Seeds ◽  
Number Of Branches

Abstract Rapeseed breeding programs are focused mainly on improving plant potential and seed yield. One of the ways to improve seed yield in oilseed rape is heterosis, which is hybrid vigor that results in a greater biomass, increased seed yield, and faster development. The purpose of this study was to estimate yield-related trait heterosis for single cross and three-way cross hybrids of winter oilseed rape (Brassica napus L.). A population of 60 doubled-haploid (DH) lines and two generations of hybrids were evaluated in field trials to assess six yield-related traits: plant height, number of branches per plant, number of siliques per plant, silique length, number of seeds per silique, and thousand seed weight. Heterosis effects for each trait were estimated by a comparison of the particular hybrid with: (1) the trait mean over both parents—mid-parent heterosis and (2) to the value of better parent—best-parent heterosis. Traits with clear positive heterosis and traits with varied heterosis were observed in this study. For the first group, we include plant height, silique length, and the number of seeds per silique—a large number of hybrids expressed significant positive heterosis for these traits, independent from the year of observations and the type of hybrid. For the second group, with varied heterosis, we can include the number of branches and siliques per plant and thousand seed weight. For these traits, hybrids exhibited both positive and negative significant heterosis, without a clear pattern for the years and types of hybrids.

The effects of soil sodicity on emergence, growth, development and yield of oilseed rape (Brassica napus)

1996 ◽  
Vol 126 (2) ◽  
pp. 169-173 ◽  
Author(s):  
F. H. Gutiérrez Boem ◽  
R. S. Lavado
Keyword(s):  
Oilseed Rape ◽  
Sandy Loam ◽  
Total Yield ◽  
Main Stem ◽  
Growth And Yield ◽  
Exchangeable Sodium ◽  
Grain Number ◽  
Soil Crusting ◽  
Growth Development ◽  
Pod Number

SUMMARYThe effects of exchangeable sodium on emergence, growth, development and yield composition of oilseed rape were investigated at Buenos Aires, Argentina in 1992. A pot experiment was performed using five exchangeable sodium levels, expressed as Sodium Adsorption Ratio (SAR: 12, 20, 27, 34 and 44). Soil with nine different exchangeable sodium contents (SAR from 0·5 to 50) and seven different particle size distributions (from sandy loam to clay) were used in a parallel trial to study the effect of soil crusting on oilseed rape emergence. Soil crusts were made using a rainfall simulator after seeds were sown. Both experiments showed that the direct effect of sodium on emergence occurred with SAR values higher than those which caused clay dispersion (SAR > 20). Oilseed rape seedlings could penetrate crusts having a resistance of < 230 kPa. At SAR values > 20, main stem growth and yield decreased significantly (P < 0·05). These reductions were counterbalanced by an increase in the number of secondary stems. At SAR levels > 34, stem number, grain number per pod on the main stem, as well as pod number on both main stem and secondary stems, were reduced, leading to a marked reduction in total yield. The most important agronomic effect of soil sodium on oilseed rape would be at emergence stage, due to soil crusting.

Response of sunflower (Helianthus annuus) to planting pattern and population density in a desert climate

1996 ◽  
Vol 126 (4) ◽  
pp. 455-461 ◽  
Author(s):  
H. A. Esechie ◽  
S. Elias ◽  
V. Rodriguez ◽  
H. S. Al-Asmi
Keyword(s):  
Population Density ◽  
Seed Weight ◽  
Commercial Production ◽  
Growth And Yield ◽  
Planting Pattern ◽  
Sultan Qaboos University ◽  
Head Weight ◽  
Biomass Plant ◽  
Desert Climate ◽  
Number Of Seeds

SUMMARYThe effects of three planting patterns (ridge, furrow and flat) and three population densities (31800, 47600 and 71400 plants/ha) on the growth and yield of three sunflower hybrids, Flamme, Upsolveraflor and Isostar, were investigated at the Sultan Qaboos University Experiment Station, 1990–93. Seed and oil yields were higher in the ridge-planted sunflower than those planted in furrow or flat patterns, the order being ridge > flat > furrow. However, the magnitude of yield differences between ridge-planted and flat-planted sunflower was not sufficiently high to compensate for the additional labour and materials required for making ridges. Based on this, planting in the flat was recommended. Although increased population density resulted in taller plants, lodging was generally low and did not constitute a serious problem. Biomass/plant, head weight, receptacle weight, head diameter, number of seeds/head and 1000-seed weight decreased with increase in plant population density. Flamme had its highest seed and oil yield at 71400 plants/ha, while Isostar attained its highest yield at 47600 plants/ha. Isostar outyielded the other two hybrids and appeared to have a potential for commercial production in a desert climate.

scholarly journals Performance of Soybean Under Different Levels of Phosphorus and Potassium

2016 ◽  
Vol 19 (1) ◽  
pp. 99-108 ◽  
Author(s):  
M Khanam ◽  
MS Islam ◽  
MH Ali ◽  
Imtiaz Faruk Chowdhury ◽  
SM Masum
Keyword(s):  
Seed Yield ◽  
Seed Weight ◽  
Maximum Yield ◽  
Growth And Yield ◽  
Combined Application ◽  
Stover Yield ◽  
Biological Yield ◽  
Phosphorus And Potassium ◽  
Pod Number ◽  
Number Of Seeds

A field experiment was conducted at the Sher-e-Bangla Agricultural University Farm, Dhaka, Bangladesh during December 2013 to April 2014 to evaluate the effect of phosphorus (P0: 0 kg TSP ha-1, P1: 100 kg TSP ha-1, P2: 175 kg TSP ha-1, P3: 250 kg TSP ha-1) and potassium (K0: 0 kg MoP, K1: 60 kg MoP ha-1, K2: 120 kg MoP ha-1, K3: 180 kg MoP ha-1), and their combinations on growth and yield of soybean (Glycine max). Number of nodules plant-1, number of filled pods plant-1, number of seeds pod-1, 1000-seed weight, seed yield, biological yield and harvest index increased significantly up to 175 kg ha-1 TSP. On the other hand, numbers of nodules plant-1, number of filled pods plant-1, length of pod, number of seeds pod-1, 1000-seed weight, seed yield, stover yield and biological yield were enhanced significantly up to 120 kg ha-1 MoP. The treatment of combined phosphorus @ 175 kg ha-1 and potassium @ 120 kg MoP ha-1 depicted the highest number of filled pods plant-1 (63.00), length of pod (3.16 cm), number of seeds pod-1 (3.11) vis a vis the highest (3.67 t ha-1) seed yield. Thus, the combined application of 175 kg ha-1 TSP and 120 kg ha-1 MoP could be the optimum for getting maximum yield of soybean.Bangladesh Agron. J. 2016, 19(1): 99-108

scholarly journals Study on growth and yield of mungbean in southern part of Bangladesh

2019 ◽  
Vol 29 (4) ◽  
pp. 313-319
Author(s):  
A Momen ◽  
MHK Howlader ◽  
AJMN Nabi ◽  
MAR Sharif ◽  
MZ Haque
Keyword(s):  
Harvest Index ◽  
Growth Yield ◽  
Growth And Yield ◽  
Ecological Zone ◽  
Local Variety ◽  
Biological Yield ◽  
Growth Development ◽  
Planting Materials ◽  
Number Of Seeds ◽  
Physiological Characters

An experiment was carried out at the field laboratory of the Department of Agricultural Botany, Patuakhali Science and Technology University (PSTU), Patuakhali during the period from January to March, 2012 to study the effect of mugbean genotypes on growth, development, morpho-physiological, yield and yield attributing characters under the agro ecological Zone (AEZ-13) in the region of Southern part of Patuakhali District. Five hybrid genotypes of mugbean viz., Local variety (V1), BARI mung 5(V2), BINA mung 5(V3), BARI mung 6(V4) and BINA mung 8(V5) were used as planting materials for this study. Among the genotypes, BINA mung 5 showed significantly better performance  on growth, yield and morpho-physiological characters compare to other genotype during this study while local variety were less efficient among those parameters.  As a result, the tallest plant of 57.020 cm higher TDM (72.538 g/plant) and LA (421.152 cm2) were recorded in BINA mung 5 at harvest. BINA mung 5 also had higher number of seeds per pod (13.25), 1000 seeds weight (52.495g), grain yield (1.997t/ha), straw yield (3.660t/ha), biological yield (5.657t/ha) and harvest index (35.303%).  On basis of these findings, BINA mung 5 was the most productive variety under the coastal area. Progressive Agriculture 29 (4): 313-319, 2018

scholarly journals Effect of Phosphorus and Boron on the Growth and Yield of French Bean

2020 ◽  
pp. 18-25
Author(s):  
F. M. Jamil Uddin ◽  
Mohammad Hadiuzzaman ◽  
Harun Or Rashid ◽  
Saedy Karim
Keyword(s):  
Seed Yield ◽  
Seed Weight ◽  
Harvest Index ◽  
French Bean ◽  
Growth And Yield ◽  
Stover Yield ◽  
Biological Yield ◽  
Four Levels ◽  
Pod Length ◽  
Number Of Seeds

An experiment was conducted at the Agronomy Field Laboratory of the Department of Agronomy, Bangladesh Agricultural University, and Mymensingh to study the effect of phosphorus and boron on the growth and yield of var. BARI Jharsheem-3 along with French bean during November 2017 to March 2018. The experiment was comprised of two factors involving number of levels viz. phosphorus had four levels  15, 20, 25 and 35 kg ha-1 and four levels of boron viz. 0, 0.5, 1.0 and  1.5 kg  ha-1. Triple super phosphate and Borax were used as source of phosphorus and boron, respectively. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. The results exhibited that yield and its contributing characters were significantly influenced by the phosphorus and boron applications. The experimental findings revealed that highest  number of pods per  plant (4.95), pod length (13.06 cm), number of seeds per pod (4.34), and 1000-seed weight (427.99 g), seed yield (1.40 t ha-1), stover yield (1.76 t ha-1), biological yield (3.16 t ha-1) and harvest index (46%) were recorded under phosphorus level at 25 kg ha-1. The experimental findings also revealed that the highest number of pods per plant (4.91), pod length (14.45 cm), number of seeds  per pod (4.36), and 1000-seed weight (427.22 g), seed yield (1.39 t ha-1), stover yield (1.68 t ha-1), biological yield (3.07 t ha-1) and harvest index (45.27 %) were recorded  under boron level at 1.5 kg ha-1. In case of  interaction of phosphorus and boron, the highest number of pods  per plant (5.18),  pod length (14.35 cm), number of seeds pod-1 (4.84), and 1000-seed weight (427.19 g), seed yield (1.86 t ha-1), stover yield (2.05 t ha-1), biological yield (3.91 t ha-1) and harvest index (47.57 %) were recorded under P level at 25 kg  ha-1  and B level at1.5 kg ha-1. So it may be concluded that 25 kg P ha-1 and 1.5 kg B ha-1 could be applied to obtain higher yield of bean.

scholarly journals Pertumbuhan dan Hasil 9 Galur Harapan Kedelai (Glycine max (L.) Merrill) pada Lahan Berpasir

Akta Agrosia ◽  
2017 ◽  
Vol 20 (1) ◽  
pp. 17-24
Author(s):  
Iwan Syaputra ◽  
Dotti Suryati ◽  
Djamilah Djamilah
Keyword(s):  
Seed Weight ◽  
Block Design ◽  
Growth And Yield ◽  
Sandy Land ◽  
Single Treatment ◽  
Randomized Block Design ◽  
Treatment Factor ◽  
Soybean Genotypes ◽  
Glycine Max L ◽  
Number Of Seeds

This research was conducted in Beringin Raya Sungai Hitam Village, Muara Bangkahulu Subdistrict, Bengkulu City from January to April 2016.  The research aims to compare the growth and yield of 9 lines of soybean expectation with 2 varieties of comparison (Tanggamus and Demas 1) on sandy land. The design used in this study was Completely Randomized Block Design (RAKL) using a single treatment factor of 11 soybean genotypes consisting of 9 lines of expectation (G4AB, G2BB, G1DB, 13 ED, 14 DD, 19 BE, 25 EC, G511H / Anj-2-10, and G511H / Anj-1-3) and 2 varieties of comparison (Tanggamus and Demas 1), each treatment was repeated four times to obtain 44 experimental units. Variables that significantly affect the F test at 5% level, followed by cluster analysis of Scott-Knott at 5% level. Of the 9 lines of expectation tested only 13 ED lines, 14 DD, and 25 EC had a number of comparable books comparable to the comparison varieties (Tanggamus and Demas 1). The comparative varieties had moderate flowering, deep harvest age, highest plant height, number of productive branches and the largest number of fertile books compared to the 9 tested lines. Density 13 ED, 14 DD, 25 EC has a number of pods of content comparable to the comparison varieties. The G511H / Anj-2-10 strain has more number of seeds per pod than the comparable strain / variety tested. The ED 13 line has a seed weight per plot proportional to the comparison varieties (Tanggamus and Demas 1), but is higher than the expected line of test. While the 19 BE strain has a weight of 100 seeds higher than the other strains / varieties tested

scholarly journals Tillage Method and Residual N, P, K, Zn, B, Mg, Ca, and S Nutrients Effect on Growth and Yield of Dry Bean Grown after the Harvest of Maize

2020 ◽  
Vol 8 (1) ◽  
pp. 18
Author(s):  
Hillary Moses Omondi Otieno ◽  
George N. Chemining’wa ◽  
Shamie Zingore ◽  
Charles K. Gachene
Keyword(s):  
Seed Weight ◽  
Crop Residue ◽  
Block Design ◽  
Conventional Tillage ◽  
Growth And Yield ◽  
Dry Bean ◽  
Short Rains ◽  
Cr System ◽  
Tillage Method ◽  
Number Of Seeds

Common bean (Phaseolus vulgaris L.) production is constrained majorly by drought and low soil fertility in Kenya. These limitations have never been adequately approached due to financial challenges and lack of better technology. A study was carried out in Kirinyaga and Embu Counties to evaluate the effects of tillage method and residual fertilizers on yield performance of dry bean. Dry bean was grown in the short rains season on plots preceded by fertilized maize (Zea mays L.) grown in the long rains season. The trials were laid out in a randomized complete block design with a split-plot arrangement. The tillage methods, NT+CR and CT-CR, where NT: No-tillage, CT: Conventional tillage, and CR: Crop residue, were assigned the main plot and residual fertilizers (NK, NP, PK, NPK, and NPK+CaMgZnBS) the subplots. The results showed that there was 35% and 46% more water retention under NT+CR than under CT-CR system in Embu and Kirinyaga sites, respectively. NT+CR produced higher biomass, more number of pods per plant, number of seeds per pod, and 1000-seed weight. Plots with residual NPK+ZnBMgCaS yielded higher biomass at 60 DAE, number of seeds per pod, 1000-seed weight and grain yield than plots with other treatments. The residual NPK+ZnBMgCaS and NPK treatments out yielded PK treatment by 600 kg ha-1 and 370 kg ha-1 (Embu) and by 710 kg ha-1 and 330 kg ha-1 (Kirinyaga), respectively. Based on these results, cultivation of dry bean on residual fertilizer nutrients solely or in combination with no-till and crop residue retention after maize harvest has the potential to improve the yields and food security among farmers in the region.

scholarly journals Phytotoxicity of Cypermethrin Pesticide on Seed Germination, Growth and Yield Parameters of Cowpea (Vigna unguiculata)

2019 ◽  
pp. 1-10
Author(s):  
S. M. Obidola ◽  
I. Iro Ibrahim ◽  
A. Y. Yaroson ◽  
U. I. Henry
Keyword(s):  
Seed Weight ◽  
Mean Value ◽  
Growth And Yield ◽  
Mean Values ◽  
Yield Parameters ◽  
Number Of Leaves ◽  
Level Of Significance ◽  
Pod Length ◽  
100 Seed Weight ◽  
Number Of Seeds

The experiment was carried out at Federal College of Forestry Jos, in Jos North Local Government Area of Plateau State to determine the phytotoxicity of cypermethrin pesticide on seed germination, growth and yield parameters of cowpea. Cypermethrin is popularly used by farmers as a means of treating seeds before planting to prevent insect, pest and birds attack. Randomized Complete Block Design (RCBD) involving 5 treatments T0 as control (No cypermethrin used), T1 with 0.25% cypermethrin (0.25ml of cypermethrin in 99.75ml of water), T2 with 0.50% cypermethrin (0.50ml of cypermethrin in 99.50ml of water), T3 with 0.75% cypermethrin (0.75ml of cypermethrin in 99.25ml of water) and T4 contained 1.00% cypermethrin (1.0ml of cypermethrin in 99.00ml water). Data was collected on radicle length, plumule length, number of leaves, number of branches, stem girth, number of seeds/pod, 100 seed weight, pod length and dry matter. Data collected was subjected to analysis of variance (ANOVA) at 5% level of significance using SPSS 23 and where significance was declared, Duncan Multiple Range Test (DMRT) was used to separate the means. The result of the research indicates that significance difference occurs in the radicle length (P<0.05) in which T1 has the highest mean value. The stem girth shows a significance difference with T0 having the highest mean value (7.32) at P<0.05. The result for the number of branches and the number of leaves shows significance difference with T0 having the highest mean values 39.15 and 101.65 respectively at P<0.05 level of significance. The yield parameters shows a significance difference for number of seeds/pod, 100 seed weight, pod length, as well as the total dry matter. The highest mean values for the yield parameters are observed in T0 with mean values 18.52, 18.53, 16.35 and 68.35 for number of seeds/pod, 100 seed weight, pod length and total dry mass respectively. Alpha amylase enzyme activity was observed to be higher at lower concentration of the cypermethrin (T1) on day 2 (2.75) but the increase in the enzyme activity tilted towards the highest concentration (T4) on day 3 and day 4 with mean value 2.70 and 3.10 at 5% level of significance.

Sign in / Sign up

Export Citation Format

Share Document