Effectiveness of different weed control practices in onion (Allium cepa L.) crop

2020 ◽  
pp. 47-51
Author(s):  
Muhammad Nafees ◽  
Ishtiaq Ahmad ◽  
Maryam ◽  
Muhammad Ahsan ◽  
Muhammad Rashid Shaheen ◽  
...  
Keyword(s):  
Plant Height ◽  
Weed Control ◽  
Allium Cepa ◽  
Weed Management ◽  
Block Design ◽  
Yield Reduction ◽  
Weed Biomass ◽  
Allium Cepa L ◽  
Randomized Complete Block Design ◽  
Number Of Leaves

Onion (Allium cepa L.) is one of the most important vegetables in family Alliaceae, which is cultivated worldwide. In onion, weeds are among one of the major concerns which cause its yield reduction. The present study was designed to assess the effectiveness of different methods for weed control in onion. In this study, five treatments were selected including control, black polythene mulch sheet, white polythene mulch sheet, Dual Gold spray @ 9.0 mL L-1 and Preact spray @ 7.5 mL L-1 to control weeds. The weedicides were applied as pre-emergence sprays before transplanting the seedlings. The experiment was laid out in Randomized Complete Block Design with three replications. From the results, it was concluded that there were significant differences among the studied weed control treatments. Among the five treatments, greater plant height (33.0 cm), number of leaves per plant (8), bulb diameter (4.7 cm) and bulb weight (73 g) were observed in the ridges covered with black mulch sheet. However, the minimum weed biomass (fresh and dry) was recorded in black mulch sheet and Preact pre-emergence weedicide spray (140 and 80 g in both). Thus, black polythene sheet as mulching material was found better option for weed management in onion fields.

scholarly journals RESPON PERTUMBUHAN DAN PRODUKSI BAWANG MERAH (Allium cepa L) TERHADAP KONSENTRASI AIR KELAPA DAN MEDIA TANAM SECARA VERTIKULTUR

2021 ◽  
Vol 8 (1) ◽  
pp. 48
Author(s):  
Lokot Ridwan Batubara ◽  
Rita Mawarni ◽  
Rizky Raka Reyanda Pohan
Keyword(s):  
Plant Height ◽  
Allium Cepa ◽  
Block Design ◽  
Water Concentration ◽  
Coconut Water ◽  
Growth Media ◽  
Cow Manure ◽  
Allium Cepa L ◽  
Wet Weight ◽  
Number Of Leaves

The study was conducted at experimantal field at Faculty of Agriculture, Asahan University, Asahan Regency on October 2020 until December 2020. The study aims to the find out the growth response and production of shallots (Allium cepa L.) to the concentration of coconut water and growth media veticulture. This study used randomized complete block design with two factors: (1) Concentration of coconut water (K) with 3 levels: K1 = 25% (250 ml coconut water + 750 ml water), K2 = 50% (500 ml coconut water + 500 ml water), K3 = 75% (750 ml coconut water + 250 ml water) and (2) growth media (M) with 3 levels: M1 = soil + cow manure (1:1), M2 = soil + cow manure (2:1), M3 = soil + cow manure (3:1). Observation parameters were plant height, number of leave, number of bulbs, bulbs weight. The results showed that coconut water concentration had a significant effect on the number of tubers per clump and tuber wet weight, but had no significant effect on observations. plant height and number of leaves, the best treatment at K3 = 75% (750 ml coconut water + 250 ml water). The planting medium did not significantly affect the observations of plant height, number of leaves, number of tubers per clump and wet weight of tubers. The interaction between the concentration of coconut water and growing media did not have a significant effect on all observed variables.

scholarly journals Effect of Micronutrients on Growth of Onion (Allium cepa L.)

2021 ◽  
pp. 344-349
Author(s):  
Siddharth Kumar ◽  
Manoj Kumar Singh ◽  
Mukesh Kumar ◽  
Khursheed Alam
Keyword(s):  
Plant Height ◽  
Allium Cepa ◽  
Zinc Sulphate ◽  
Block Design ◽  
Research Centre ◽  
Rabi Season ◽  
Randomized Block Design ◽  
Allium Cepa L ◽  
Number Of Leaves ◽  
Horticultural Research

Onion is one of the most important bulb crop grown all over the India. It belongs to family Alliaceae and locally known as Pyaj. An experiment was conducted to determine the effect of micronutrients on growth of Onion (Allium cepa L.) during Rabi season of 2019-2020 at the Horticultural Research centre of Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut (U.P.). The experiment was laid out in Randomized Block Design (RBD) with three replications. The maximum plant height (27.18, 43.32, 49.22 and 47.45 cm at 30, 60, 90 and at harvest after days of transplanting, respectively), number of leaves (5.11, 8.83, 12.87 and 13.98 at 30, 60, 90 and at harvest after days of transplanting, respectively), diameter of stem per plant (6.64, 8.97, 11.13 and 10.95 mm at 30, 60, 90 and at harvest after days of transplanting, respectively) and length of longest leaf at harvesting (43.56 cm) were reported under treatment T9 -RDF + Zinc Sulphate 20 Kg ha-1 + Borax 10 Kg ha-1 whereas the minimum values for above parameters were recorded under T11- control. Hence application of RDF + Zinc Sulphate 20 Kg ha-1 + Borax 10 Kg ha-1 is worth recommendable for formers to get significantly better growth of Rabi onion.

scholarly journals Spring-planted cover crops for weed control in soybean

2021 ◽  
pp. 1-8
Author(s):  
Katja Koehler-Cole ◽  
Christopher A. Proctor ◽  
Roger W. Elmore ◽  
David A. Wedin
Keyword(s):  
Weed Control ◽  
Biomass Production ◽  
Cover Crops ◽  
Weed Management ◽  
Block Design ◽  
Weed Suppression ◽  
Crop Species ◽  
Cold Temperatures ◽  
Weed Biomass ◽  
Small Grains

Abstract Replacing tillage with cover crops (CC) for weed management in corn (Zea mays L.)-soybean [Glycine max (L.) Merr.] systems with mechanical weed control has many soil health benefits but in the western Corn Belt, CC establishment after harvest is hampered by cold temperatures, limited labor and few compatible CC species. Spring-planted CC may be an alternative, but information is lacking on suitable CC species. Our objective was to evaluate four spring-planted CC with respect to biomass production and weed suppression, concurrent with CC growth and post-termination. Cover crop species tested were oat (Avena sativa L.), barley (Hordeum vulgare L.), brown mustard [Brassica juncea (L.) Czern.] and yellow mustard (Brassica hirta Moench). They were compared to no-CC treatments that were either tilled pre- and post-planting of soybean (no-CC tilled) or not tilled at all (no-CC weedy). CC were planted in late March to early April, terminated 52–59 days later using an undercutter, and soybean was planted within a week. The experiment had a randomized complete block design with four replications and was repeated for 3 years. Mustards and small grains produced similar amounts of biomass (1.54 Mg ha−1) but mustard biomass production was more consistent (0.85–2.72 Mg ha−1) than that of the small grains (0.35–3.81 Mg ha−1). Relative to the no-CC weedy treatment, mustards suppressed concurrent weed biomass in two out of 3 years, by 31–97%, and small grains suppressed concurrent weed biomass in only 1 year, by 98%. Six weeks after soybean planting, small grains suppressed weed biomass in one out of 3 years, by 79% relative to the no-CC weedy treatment, but mustards did not provide significant weed suppression. The no-CC tilled treatment suppressed weeds each year relative to the no-CC weedy treatment, on average 87%. The ineffective weed control by CC reduced soybean biomass by about 50% six weeks after planting. While spring-planted CC have the potential for pre-plant weed control, they do not provide adequate early season weed suppression for soybean.

scholarly journals An Assessment of Genetic Variability in Contrasting Castor Seedlings

2020 ◽  
Vol 2 (6) ◽  
Author(s):  
G. I. Ilo ◽  
I. A. Nweke ◽  
S. I. Ijearu
Keyword(s):  
Plant Height ◽  
Block Design ◽  
Flowering Plant ◽  
State University ◽  
Randomized Complete Block Design ◽  
Region Length ◽  
Number Of Leaves ◽  
Enugu State ◽  
Cropping Seasons ◽  
Better Than

Nine genotypes of castor oil bean (Ricinus cumunis) were evaluated in 2011 and 2012 cropping seasons to determine their consistency of performance at the Enugu State University of Science and Technology, Enugu State. Eight (8) accessions were selected from various locations in the south east, while a standard check was obtained from Ahmadu Bello University Zaria. The study was carried out using a randomized complete block design with four replications. Data was collected on number of days to germination, days to 50% flowering, plant height at maturity, length of primary raceme, length of pistillate region, length of staminate region and number of leaves. The findings from the study showed that Zaria accession flowers within 80 days and significantly (P < 0.05) different from the other eight (8) accessions studied, except Udi for plant height at maturity the significant and comparable large genotypes for all the characters except number of days to germination; number of nodes and length of staminate region implies that there would be adequate gains in selecting the characters. The phenotypic coefficient of variation was found to be higher than the genotypic coefficient of variance for all the character studied indicating the influence of environment towards the total variance. The short height recorded in Zaria and Udi accessions which are at par is of a desirable trait for shorter plants are easier to manage agronomical and it also withstands lodging better than all plants. These accessions based on the agronomic characters studied were found to perform very well in Enugu south-east, Nigeria and is therefore, recommended to be grown in this region.

scholarly journals Effects of Moringa Leaf Extract and Poultry Manure on the Growth Parameters of Sweet Maize

2021 ◽  
Vol 11 (1) ◽  
pp. 10-18
Author(s):  
Alubiagba D.O ◽  
Ovharhe O.J ◽  
Akparobi S.O
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Leaf Extract ◽  
Growth Parameters ◽  
Block Design ◽  
Poultry Manure ◽  
Randomized Complete Block Design ◽  
Number Of Leaves ◽  
Plant Stem ◽  
Moringa Leaf Extract

This study examined the effects of moringa leaf extract (MLE) and poultry manure (PM) on the growth parameters of sweet maize. The experiment was a Randomized Complete Block Design involving nine treatments: control (no extract), 3% MLE, 6% MLE, 9% MLE, 3% MLE + 15 t/ha–1 PM, 6% MLE + 15 t/ha–1 PM, 9% MLE + 15 t/ha–1 PM, 15 t/ha–1 PM, and 30 t/ha–1 PM. Data on growth parameters including plant height, number of leaves per plant, stem girth, and leaf area were collected and analyzed. The results of the study show that there were significant differences (P = 0.05) among the treatments because plots that received 30 t/ha–1 PM performed best on plant height (193.6 and 152.8 cm) number of leaves (13.1 and 10.2), stem girth (3.75 and 3.22 cm), and leaf area (584.9 and 402.9 cm2) in both early and late season. This was followed by plots that received 9% MLE and 15 t/ha–1 PM, with values of 189.0 and 152.2 cm; 12.5 and 10.0; 3.58 3.15 cm; and 546.2 and 392.2 cm2, respectively. The study concluded that 30 t/ha–1 PM can be used to yield effective growth parameters in sweet maize and is hereby recommended to extension workers for dissemination to farmers

scholarly journals Effect of Biochar Application as a Soil Amendment on Growth and Yield of Sesame (Sesamumindicuml.)

2020 ◽  
Vol 22 (2) ◽  
pp. 113-127
Author(s):  
TS Roy ◽  
MT Rahaman ◽  
R Chakraborty ◽  
M Mostofa ◽  
MS Rahaman
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Block Design ◽  
Growth And Yield ◽  
Randomized Complete Block Design ◽  
Stover Yield ◽  
Two Factors ◽  
Biological Yield ◽  
Number Of Leaves ◽  
Different Levels

The experiment was conducted to study the effect of biochar on growth and yield of sesame. In the experiment, the treatment consisted of three varieties, viz., V1 = BARI Til- 2, V2 = BARI Til-3 and V3 = BARI Til-4, and five levels of biocharviz., B0= control (no biochar application), B1= 2 t ha-1, B2= 4 t ha-1, B3= 6 t ha-1 and B4= 8 t ha-1. The experiment was laid out in two factors randomized complete block design (RCBD) with three replications.Variety, application of different levels of biochar and their interaction showed statistically significant variation in plant height, number of leaves plant-1at 55 and 80 DAS and at harvest, capsules plant-1, seeds capsule-1, 1000-seed weight, seed yield, stover yield, biological yield and harvest index.The highest plant height (70.34, 110.95 and 109.84 cm at 55 and 80 DAS and at harvest respectively), number of leaves plant-1 (80.47, 116.70 and 94.54 at 55, 80 DAS and at harvest, respectively), number of branches plant-1 (3.60), capsules plant-1(80.47), number of seeds capsule-1(56.02),seed yield(1.07tha-1)andharvestindex(36.46%)were observed in the variety BARI Til-4 cultivated with the application of biochar @ 6 t ha-1 (V3*B3) and the lowest one was observed in variety BARI Til-2 with no biochar application (V1*B0).Biochar is effective for increasing growth and yield of sesame. Bangladesh Agron. J. 2019, 22(2): 113-127

Nature and magnitude of genetic variability and diversity analysis of Indian turmeric accessions using agro-morphological descriptors

2016 ◽  
Vol 96 (3) ◽  
pp. 371-381 ◽  
Author(s):  
Vijay Bahadur ◽  
Vijay Yeshudas ◽  
Om Prakash Meena
Keyword(s):  
Genetic Variability ◽  
Plant Height ◽  
Block Design ◽  
Positive Association ◽  
Breeding Programs ◽  
Analysis Techniques ◽  
Randomized Complete Block Design ◽  
Cluster Distance ◽  
Number Of Leaves ◽  
Positive Direct

Turmeric, a vegetatively propagated crop, may have restricted variability from which to breed new cultivars. Understanding the genetic variability of a species is crucial for the progress of a genetic breeding program and requires characterization and evaluation of accessions. The objectives of this study were to determine extent of variability, relationships between different agro-morphological traits, and diversity among 25 different accessions of turmeric. The present experiment was conducted at the Vegetable Research Farm, Department of Horticulture, Sam Higginbottom Institute of Agriculture, Technology and Sciences, Allahabad, India during 2008–2009 and 2009–2010. Accessions were arranged in a randomized complete block design with three replications. Significant mean square of accessions for all the traits studied indicates the existence of sufficient genetic variability among the studied accessions. The rhizome yield exhibited highly significant and positive association with plant height, number of leaves plant−1, number of tillers plant−1, weight of rhizomes plant−1, length of primary rhizome, and dry matter recovery. The highest positive direct effect on rhizome yield was exerted by plant height. Multivariate analysis techniques allowed an effective study of genetic divergence and the grouping of the 25 accessions into six clusters. The highest inter-cluster distance was observed between cluster II and IV, accessions from these clusters can be used as potential parents for future breeding programs.

scholarly journals Desempenho fisiológicos e crescimento do feijão-caupi, sob manejos de plantas daninhas

2017 ◽  
Vol 12 (2) ◽  
pp. 246
Author(s):  
Uriel Calisto Moura Pessôa ◽  
Kelder José Alves de Oliveira ◽  
Anielson Dos Santos Souza ◽  
Thiago Alves Pimenta ◽  
Rafael Vitor Da Silveira Muniz ◽  
...  
Keyword(s):  
Weed Management ◽  
Block Design ◽  
Co2 Assimilation ◽  
Food Science ◽  
Gas Analyzer ◽  
Gas Exchanges ◽  
Randomized Complete Block Design ◽  
Number Of Leaves ◽  
Infrared Gas Analyzer ◽  
Direct Reflection

<p>A interferência das plantas daninhas, afeta os parâmetros de fisiológicos da cultura do feijão-caupi, com reflexo direto no crescimento e na produtividade. Assim, objetivou-se avaliar a atuação de métodos de controle das plantas daninhas na cultura do feijão-caupi, identificando o mais eficiente, por meio do acompanhamento dos componentes de crescimento, sendo estes compostos de altura (cm), número de folhas, diâmetro do caule (mm) e os aspectos fisiológicos da cultura, pela coleta de dados da taxa de assimilação de CO<sub>2</sub> (μmol m<sup>-2</sup> s<sup>-1</sup>), transpiração (mmol de H<sub>2</sub>O m<sup>-2</sup> s<sup>-1</sup>), condutância estomática (mol de H<sub>2</sub>O m<sup>-2</sup> s<sup>-1</sup>) e concentração interna de CO<sub>2</sub>, com um analisador de gás infravermelho . O experimento foi realizado em condições de campo no Centro de Ciências e Tecnologia Agroalimentar da Universidade Federal de Campina Grande, Campus Pombal, Paraíba. O delineamento experimental utilizado foi o de blocos ao acaso com oito tratamentos e quatro repetições em esquema fatorial 2 x 4, sendo os fatores: dois cultivares de feijão-caupi (BRS Marataoã e BRS Rouxinol) e quatro manejos das plantas daninhas (mecânico, químico, físico e sem controle). Os manejos químico, mecânico e físico, mostram-se superiores nos componentes de crescimento, não afetando tais características, sendo as trocas gasosas severamente afetadas.</p><p align="center"><strong><em>Physiological performance and growth of cowpea under weed management</em></strong></p><p><strong>Abstract</strong><strong>: </strong>The interference of weeds affects the physiological parameters of cowpea culture, with direct reflection on growth and productivity. The objective of this study was to evaluate the performance of different weed control methods in cowpea culture in order to identify the most efficient by monitoring the growth components, being these compounds of height (cm), number of leaves and diameter of the stem (mm) and the physiological aspects of the culture, by collecting data: CO2 assimilation rate (μmol m-2 s-1), transpiration (mmol H<sub>2</sub>O m<sup>-2</sup> s<sup>-1</sup>), Stomatal conductance (mol of H<sub>2</sub>O m<sup>-2</sup> s<sup>-1</sup>) and internal CO<sub>2 </sub>concentration, with an infrared gas analyzer. The experiment was accomplished under field conditions at the Center for Agro-Food Science and Technology of the Federal University of Campina Grande, Campus Pombal, Paraíba . The experimental design was a randomized complete block design with eight treatments and four replications in a 2 x 4 factorial scheme, being these factors: two cultivars of cowpea (BRS Marataoã and BRS Rouxinol) and four weed management (mechanical, chemical , Physical and uncontrolled). Chemical, mechanical and physical management are shown to be superior in the growth components, not affecting these characteristics, being the gas exchanges severely affected.</p>

scholarly journals Effects of cowdung and potassium on growth and yield of Kohlrabi

2012 ◽  
Vol 10 (1) ◽  
pp. 27-32 ◽  
Author(s):  
J Sultana ◽  
M A Siddique ◽  
M H A Rashid
Keyword(s):  
Plant Height ◽  
Block Design ◽  
Dry Weight ◽  
Growth And Yield ◽  
Control Treatment ◽  
Fresh Weight ◽  
Treatment Combination ◽  
Randomized Complete Block Design ◽  
Number Of Leaves ◽  
Four Levels

An experiment was carried out at the Horticulture Farm of the Bangladesh Agricultural University, Mymensingh during  the period from November 2010 to January 2011 to study the effects of cowdung and potassium on growth and yield  of Kohlrabi. The experiment consisted of three levels of cowdung (0, 20 and 40 t/ha) and four levels of potassium (0,  20, 50, 80 kg /ha). The experiment was laid out in randomized complete block design with three replications. All the  parameters were significantly influenced by application of cowdung and potassium. The highest plant height (44.65  cm), number of leaves per plant (12.11), length of largest leaf (37.54 cm), and breadth of largest leaf (18.66 cm) were  obtained from the highest dose of cowdung and potassium applied (40 t cowdung + 80 kg K/ha) while the lowest  plant height (33.64 cm), number of leaves (9.01), length of largest leaf (27.94 cm), and breadth of largest leaf (11.00  cm) were obtained from control treatment combination. The highest fresh weight of leaves (49.33 g), fresh weight of  knob (328.66 g) and fresh weight of roots (66.55 g) per plant were also recorded under the treatment combination of  40 t cowdung + 80 kg K/ha, while the lowest fresh weight of leaves (22.11 g), fresh weight of knob (136.00 g) and  fresh weight of roots (23.33 g) were obtained from control treatment combination. Similarly, the dry weight of leaves  (19.34%), knob (15.19%) and roots (32.75%) were highest under the same treatment combination of 40 t cowdung +  80 kg K/ha and the lowest dry weight of leaves (11.71%), dry weight of knob (7.38%) and dry weight of roots  (15.29%) were obtained from control treatment combination C0K0. The marketable yields of knob per plot (7.86 kg)  and per hectare (39.58 tons) were also the highest under the treatment combination 40 t cowdung/ha and 80 kg  potassium per hectare.   DOI: http://dx.doi.org/10.3329/jbau.v10i1.12035   J. Bangladesh Agril. Univ. 10(1): 27–32, 2012  

scholarly journals Effects of Planting Time and Spacing on the Growth and Yield of Carrot Under Dry Land Condition at Bina, Mymensingh

2020 ◽  
Vol 7 (3) ◽  
pp. 373-382
Author(s):  
Md Shamsul Alam ◽  
Md Rafiqul Islam ◽  
Md Kamruzzaman ◽  
Khondakar Sumsul Arefin ◽  
Md Nazmul Hasan Mehedi
Keyword(s):  
Plant Height ◽  
Block Design ◽  
Combined Effect ◽  
Growth And Yield ◽  
Plant Spacing ◽  
Dry Land ◽  
Planting Time ◽  
Randomized Complete Block Design ◽  
Land Condition ◽  
Number Of Leaves

An experiment was conducted at the Horticulture Farm of the Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh, Bangladesh during the period from November, 2018 to April, 2019 to study the effects of planting time and spacing on the growth and yield of carrots under dry land condition at BINA, Mymensingh. Five different planting times viz. November 10, November 20, November 30, December 10 and December 20 and four different spacing’s of 25× 20 cm, 20× 20 cm, 15× 15 cm and 10× 10 cm were used . This experiment was laid out in randomized complete block design with three replications. Planting time showed significant effects on the growth and yield of carrot in respect of plant height, number of leaves, fresh and dry weights of leaves and roots, length ad diameter of roots, gross and marketable yields of carrot. The highest marketable yields (39.70 t/ha) was obtained from November 20 planting, whereas the lowest yields (25.02 t/ha) from December 20 planting. Plant spacing also significantly influenced on all the mentioned parameters. The highest marketable yields (34.95 t/ha) was observed from the closest spacing of 10× 10 cm. In respect of combined effect, November 20 planting with the closest spacing of 10× 10 cm produced significantly the highest marketable (42.29 t/ha) yields of carrot. Res. Agric., Livest. Fish.7(3): 373-382,  December 2020

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