scholarly journals Effect of Plant Population Density of Velvet Bean (MUCUNA COCHINCHINENSIS) for Weed Control at Makurdi, Southern Guinea Savanna of Nigeria

2019 ◽  
Vol 2 (1) ◽  
Keyword(s):  
Weed Control ◽  
Ground Cover ◽  
Field Trials ◽  
Velvet Bean ◽  
Weed Density ◽  
Guinea Savanna ◽  
Randomized Design ◽  
Set Up ◽  
The University ◽  
And Control

Field trials were conducted in 2013 and 2014 raining season on a fallow field at the University of Agriculture Makurdi Teaching and Research Farm ((07 0 41’N, 08 0 37’E and 106.4 m above sea level) using Velvet bean (Mucuna cochinchinensis) to control weeds. Four Mucuna populations were used: 400 plants/ha, 800 plants/ha, 1600 plants/ha and 0.00 plants/ha (control). The experiment was set up in a Completely Randomized Design (CRD). Prominent weeds at the site were identified in the field in 2013. The four different Mucuna populations were screened for their effects on weed (density, composition), growth characteristics (ground cover, nodulation) and canopy duration. Out of the 4 Mucuna populations, 800 plants/ha had the highest effect on weed density, composition and control percentage, ground cover, canopy duration and nodulation. And 0.00 plants/ha had the lowest effect on weed density, weed composition, weed control percentage, ground cover, canopy duration and nodulation. From the results obtained from the study, it can be concluded that farmers in Makurdi, Southern Guinea Savanna can adopt the planting of Mucuna at 800 plants/ha for weed control.

The Effect of Trifluralin Applied Preplant on Grass Weed Control and Establishment and Yield of Barley (Hordeum vulgare)

1997 ◽  
Vol 11 (3) ◽  
pp. 515-519 ◽  
Author(s):  
Julio A. Scursoni ◽  
Emilio H. Satorre
Keyword(s):  
Weed Control ◽  
Field Experiments ◽  
Herbicide Application ◽  
Planting Pattern ◽  
Weed Density ◽  
Time Of Application ◽  
Density And Biomass ◽  
And Control ◽  
Crop Planting ◽  
Grass Weed

The objective of this paper was to evaluate the effect of preplant applications of trifluralin on barley stand and yield, and control of grass weeds in field experiments during 1992 and 1993. Factors examined were: (1) crop planting patterns (conventional drill with rows 15 cm apart and deep-seeder drill with rows 25 cm apart), (2) herbicide application times (22 d before sowing and immediately before sowing), and (3) herbicide application. During 1993, hand-weeded plots also were established. Trifluralin applied preplant at 528 g ai/ha reduced weed density and biomass. Weed control was higher under conventional planting than under the deep planting pattern, and there was no effect of the time of application on herbicide efficacy. There was no herbicide injury to the crop, and grain yield was higher in treated than in untreated plots due to successful weed control.

scholarly journals PENGARUH KONSENTRASI MINYAK KEMIRI SUNAN (Reutealis trisperma (Blanco) Airy Shaw) TERHADAP LARVA Crocidolomia binotalis Zell. (Lepidoptera; Pyralidae) HAMA PADA TANAMAN SAWI (Brassica juncea L.)

2020 ◽  
Vol 1 (2) ◽  
Author(s):  
Yenny Muliani ◽  
Erry Mustariani ◽  
Rahmat Wahid Ramdyan
Keyword(s):  
Feeding Activity ◽  
Dry Weight ◽  
Plant Diseases ◽  
Hazelnut Oil ◽  
Botanical Pesticide ◽  
Crocidolomia Binotalis ◽  
Randomized Design ◽  
Lepidoptera Pyralidae ◽  
The University ◽  
And Control

ABSTRAKKemiri sunan (Reutealis trisperma (Blanco) Airy Shaw) dikenal sebagai tumbuhan yang berperan sebagai pestisida nabati yang belum banyak diketahui keampuhannya, sehingga perlu dilakukan pengujian untuk memperoleh informasi tentang keampuhan dari tumbuhan ini. Pengujian efektivitasnya dilakukan terhadap larva Crocidolomia binotalis Zell. penyebab kerusakan pada tanaman sawi. Percobaan dilaksanakan di Laboratorium Vertebrata, Departemen Hama dan Penyakit Tumbuhan, Fakultas Pertanian, Universitas Padjadjaran, Jatinangor, berlangsung dari Maret sampai Mei 2019. Percobaan menggunakan Rancangan Acak Lengkap (RAL) dengan 5 perlakuan dan 5 ulangan. Perlakuan meliputi minyak kemiri sunan dengan konsentrasi 10%, 5%, 2.5%, 1.25% dan kontrol. Hasil penelitian menunjukkan minyak kemiri sunan berpengaruh terhadap larva Crocidolomia binotalis. Konsentrasi 10% dapat mengakibatkan mortalitas paling tinggi sebesar 100% pada 7 HSA. Selain toksik, minyak kemiri sunan juga dapat memperpanjang lama perkembangan larva, menghambat aktivitas makan (antifeedant), serta menurunkan berat kering larva dibandingkan dengan kontrol. Minyak kemiri sunan berpotensi sebagai alternatif pengendali hama yang ramah lingkungan karena dapat berperan sebagai pestisida nabatiKata kunci: Kemiri sunan, Crocidolomia binotalis, Pestisida nabatiABSTRACTReutealis trisperma (Blanco) Airy Shaw is know as a plant that acts as a vegetable pesticide that is not yet widely known for its efficacy, so testing is needed to obtain information about the efficacy of this plant. Effectiveness testing is carried out on Crocidolomia binotalis Zell. larvae causing damage to oil palm plants. The experiment was carried out in the vertebrate laboratory, the deparment of pest and plant diseases, the faculty of agriculture, the university Padjadjaran, taking place from March-May 2019. The experiment used the randomized design complete with 5 treatments and 5 replication. The treatments included oil Reutealis trisperma (Blanco) Airy Shaw with a concentration 10%, 5%, 2.5%, 1.25% and control. The result hazelnut oil affected the larva Crocidolomia binotalis Zell. 10% concentration can cause the highest mortality of 100% at 7 HAS. In addition to toxic, hazelnut oil prolong the development of larvae, inhibit feeding activity, and reduce the dry weight of larvae compared to controls. Hazelnut oil has potential as an alternative as an a alternative pest control that is environmentally friendly because it can act as a botanical pesticide.Keywords : Reutealis trisperma, Crocidolomia binotalis, Botanical pesticide

scholarly journals The effects of fertilization on the protein related properties of winter wheat

2013 ◽  
pp. 67-69
Author(s):  
Mariann Móré ◽  
Zita Burján ◽  
Zoltán Győri ◽  
Péter Sipos
Keyword(s):  
Field Trials ◽  
Quality Parameters ◽  
Plant Production ◽  
Mineral Fertilization ◽  
Yield And Quality ◽  
Gluten Content ◽  
Protein Properties ◽  
Set Up ◽  
The University ◽  
Gluten Index

The yield and quality of wheat are mainly determined by the plant production system, thus we studied the effect of mineral fertilization. The field trials were set up in 1983 at the Látókép Research Institute of the University of Debrecen. We examined effect of different Nfertilizer doses (60 kg ha-1 N/P/K, 120 kg ha-1 N/P/K) on Lupus, Mv Toldi and GK Csillag's protein properties in 2012. During the tests, three quality parameters were determined: wet gluten content (%), wet gluten spread (mm/h) and gluten index (%). In the experiment the effect of different doses of N-fertilizers significantly influenced by the wet gluten content and gluten index of Lupus.

scholarly journals EFEKTIVITAS FORMULASI BIOHERBISIDA EKSTRAK BUAH LERAK DENGAN PENAMBAHAN ADJUVAN TERHADAP PERKECAMBAHAN GULMA Ludwigia octovalvis

2020 ◽  
Vol 19 (2) ◽  
pp. 96
Author(s):  
Hidayat Pujisiswanto ◽  
Sunyoto Sunyoto ◽  
Nanik Sriyani ◽  
Melinda Tri Pratiwi
Keyword(s):  
Weed Control ◽  
Cultivated Land ◽  
Fruit Extract ◽  
Randomized Design ◽  
And Control

The abundance of weeds in cultivated land can directly inhibit competition of plants growth. Weed control using bioherbicides is one of eco-friendly alternative. This research aims to determine the bioherbicide formulation of lerak fruit extract with the addition of adjuvants which can inhibit the germination of Ludwigia octovalvis. The research was conducted at the Weed Laboratory of the Faculty of Agriculture, University of Lampung in December 2019 - March 2020. The researcher used Complete Randomized Design (CRD) with four replications.  The research treatments consisted of lerak fruit extract + KAO adjuvant, lerak fruit extract + VCO, lerak fruit extract + Tween, pure lerak fruit extract, and control (aquades). The results showed that the application of 50% (500 g / l) lerak fruit extract with the addition of VCO, KAO, and Tween adjuvants at a concentration of 2% (20 ml/l) was able to inhibit weed germination Ludwigia octovalvis by 95%-100%. The application of lerak fruit extract with the addition of a 2% concentration of VCO adjuvant was the most effective in inhibiting weed germination Ludwigia octovalvis. Keywords : adjuvants, Bioherbicide, Sapindus rarak, Ludwigia octovalvis, weed

Interference and Control of Large Crabgrass (Digitaria sanguinalis) and Southern Sandbur (Cenchrus echinatus) in Forage Bermudagrass (Cynodon dactylon)

1998 ◽  
Vol 12 (4) ◽  
pp. 707-711 ◽  
Author(s):  
Robert H. Walker ◽  
Glenn Wehtje ◽  
John S. Richburg
Keyword(s):  
Weed Control ◽  
Field Experiments ◽  
Cynodon Dactylon ◽  
Ground Cover ◽  
Weed Competition ◽  
Minor Importance ◽  
Digitaria Sanguinalis ◽  
Competitive Species ◽  
And Control ◽  
Large Crabgrass

Field experiments were conducted at two locations in central Alabama to evaluate competitiveness of large crabgrass and southern sandbur with ‘Tifton 78’ hybrid bermudagrass as influenced by diuron application and sprigging rate. Large crabgrass was the more competitive species. In late season, bermudagrass ground cover with no weed competition was 96% compared with 72 and 81% where large crabgrass and southern sandbur, respectively, were present. Similarly, large crabgrass and southern sandbur reduced the proportion of bermudagrass in the cumulative harvested forage by at least 59 and 38%, respectively. Application of diuron preemergence (PRE) at 1.1 kg ai/ha was more effective than postemergence (POST) application, both in terms of weed control and bermudagrass safety. With diuron applied PRE, large crabgrass and southern sandbur reduced the proportion of bermudagrass in the harvested forage only 32 and 25%, respectively. Increasing bermudagrass sprigging rate was beneficial for weed control but of relatively minor importance compared with diuron PRE.

scholarly journals Agronomic and economic performance of maize (Zea mays L.) as influenced by seed bed configuration and weed control treatments

2021 ◽  
Vol 6 (1) ◽  
pp. 445-455
Author(s):  
Emmanuel Oyamedan Imoloame
Keyword(s):  
Weed Control ◽  
Economic Performance ◽  
Zea Mays L ◽  
Field Trials ◽  
Economic Returns ◽  
Weed Density ◽  
Maize Grain Yield ◽  
Weed Infestation ◽  
Maize Grain ◽  
Cropping Seasons

Abstract Poor method of weed control and indiscriminate use of herbicides led to low yields, economic returns, and increasing environmental pollution in the southern Guinea savanna of Nigeria. These prompted the conduct of field trials in the 2018 and 2019 cropping seasons to determine the effects of seed bed configuration and weed control treatments on the agronomic and economic performance of maize. The treatments consisted of flat and ridge seed beds and six weed control treatments. The experimental design was a randomized complete block with split plot arrangement and replicated thrice. Results showed that seed bed configuration had significant (p ≤ 0.05) effect on weed density, but not on maize grain yield. All the weed control treatments significantly (p ≤ 0.05) reduced weed infestation and increased maize grain yields compared to the weedy check. Furthermore, Primextra at 1.5 kg active ingredient per hectare (kg a.i. ha−1) + One supplementary hoe weeding (SHW) at 6 weeks after sowing (WAS), Primextra + Paraforce at 1.5 + 0.7 kg a.i. ha−1, and Primextra + Guard force at 1.5 + 0.03 kg a.i. ha−1 applied on flat seed beds and two hoe weeding at 3 and 6 WAS + ridge produced higher yields, profit, and economic returns. Therefore, the above reduced herbicide rates applied on flat seed beds are recommended to farmers as alternatives to two hoe weeding at 3 and 6 WAS for profitable production of maize.

Biochar and integrated phosphorus management suppress weed density in maize crop

2020 ◽  
Vol 27 (2) ◽  
pp. 491-498
Author(s):  
Salman Ali ◽  
Muhammad Arif ◽  
Mehran Ali ◽  
Muhammad Afzaal ◽  
Gohar Saeed ◽  
...  
Keyword(s):  
Weed Control ◽  
Crop Production ◽  
Block Design ◽  
Dry Weight ◽  
Maize Crop ◽  
Weed Density ◽  
P Application ◽  
High Doses ◽  
The University ◽  
P Sources

Weeds pose a significant threat to successful crop production. To meet the increasing future food demand, sustainable and efficient weed control remains a cornerstone practice. Usage of high doses of herbicides for killing weeds has created several ecological and environmental problems which cannot be overlooked. Therefore, other weed control practices and techniques should be adopted to minimize weed-crop competition and increase the growth and productivity of crop, instead of chemicals. An experiment was established at Agronomy Research Farm, the University of Agriculture Peshawar to evaluate the effects of biochar and organic-inorganic P sources on density, fresh and dry weight of weeds in maize during 2016. Experiment was executed using randomized complete block design and treatments included biochar (0 and 10 tonnes ha-1) and three sources of P; FYM, PM and one DAP. Phosphorus at the rate of 100 kg ha-1 was applied in such a way that each plot received 50, 75 and 100% P from PM or FYM and the rest from DAP. Biochar and P sources significantly affected density, fresh and dry weight of weeds at 25 and 50 days after sowing of crop. 10 tonnes ha-1 biochar reduced weed density and fresh and dry weight of weeds at both intervals i.e. 25 and 50 days after sowing. Similarly, lower weed density, weed fresh and dry weight with addition of PM or FYM and DAP in 50:50 ratios. Sole FYM and PM resulted in higher weed density and weeds fresh and dry biomass. It is concluded that 10 tons ha-1 biochar and P application 50% from FYM or PM and 50% from DAP improved maize growth and reduced weed competition.

scholarly journals Daya Hambat Ekstrak Etanolik Buah Sirih Hijau (Piper betle L.) Terhadap Pertumbuhan Jamur Candida albicans (ATCC 1805)

2018 ◽  
Vol 5 (2) ◽  
pp. 77-83
Author(s):  
Ester Rampa
Keyword(s):  
Inhibition Zone ◽  
Inhibitory Effect ◽  
Diffusion Method ◽  
Piper Betle ◽  
Fruit Extract ◽  
Disk Diffusion Method ◽  
Randomized Design ◽  
Fruit Samples ◽  
The University ◽  
And Control

The research had been conducted in the Laboratory of Microbiology, Department of Biology, Faculty of Mathematics and Natural Sciences, the University of Cenderawasih during September–November 2012. The aims of the research were to understand the effect of green betel fruit extract inhibition against the C. albicans, as well as the effective concentration of extract to inhibit the growth of the fungus. Fruit samples were obtained from the Koya Koso village, Abepura District, Jayapura city, while the fungal isolates of C. albicans was obtained from the Laboratory of Microbiology, Faculty of Medicine, University of Padjadjaran. The study was performed using a method of disk diffusion method with concentration of 10%, 5%, 2.5% and control, while indicator parameter were measured based on the presence of inhibition zone caused by inhibition treatment. The study was designed on a Completely Randomized Design (CRD) and the data were analyzed using analysis of variance at α= 0.5 and α= 0.1. The presences of significant differences of data were further analyzed using Least Significance Differences (LSD) analyses. The results showed that all green betel fruit extract concentrations effectively inhibited the growth of the fungus C. albicans and concentration of 10% revealed the best inhibition effect.Key words: Inhibitory effect, Piper betle L, fruit extract, fungus. 

scholarly journals Weed control efficacy of hoe weeding and commercially formulated mixture of metolachlor + prometryn herbicide under maize production in soil amended with biochar

2019 ◽  
Vol 52 (2) ◽  
pp. 73-78
Author(s):  
Olusegun Raphael Adeyemi ◽  
David Obaloluwa Hosu ◽  
Patience Mojibade Olorunmaiye ◽  
Adeniyi Adebowale Soretire ◽  
Joseph Aremu Adigun ◽  
...  
Keyword(s):  
Grain Yield ◽  
Weed Control ◽  
Block Design ◽  
Maize Yield ◽  
Field Trials ◽  
Growth And Yield ◽  
Control Methods ◽  
Maize Production ◽  
Randomized Design ◽  
Manual Weeding

Abstract Successful cultivation of maize depends largely on efficient weed control, adequate supply of essential nutrients and sufficient soil moisture. Screenhouse and field trials were conducted at the Teaching and Research Farm of the Federal University of Agriculture, Abeokuta, Nigeria during the early and late cropping season of 2013 to evaluate effects of biochar integrated with manual weeding and pre-emergence herbicides on weed control efficiency and productivity of maize. The screenhouse trial was a 6 × 5 factorial experiment fitted into Completely Randomized Design in three replicates. The two factors were biochar: 0, 2, 4, 6, 8 and 10 t ha−1 and weed control methods: weedy check, hoe weeding at 6 Weeks After Sowing (WAS), hoe weeding at 3, 6, and 9 WAS, pre-emergence herbicide application (Codal Gold) at 1.0 and 2.0 kg a.i./ha−1. The field trial was laid out in split-plot arrangement fitted into Randomized Complete Block Design with three replicates. The three main treatments plots on the field consisted of the optimum rates of biochar obtained in the screenhouse (10 t ha−1) compared with 20 t ha−1 and 0 t ha−1 which served as the control. The sub-plots treatments consisted of weed control methods used in the screen house experiment. Data were collected on grain yield and weed dry matter. The result showed that biochar at 10 and 20 t ha−1 in the screenhouse and field trials, respectively, resulted in significantly (P < 0.05) higher grain yield compared with other rates tested. Highest grain yield was obtained in pots hoe weeded thrice at 3, 6 and 9 WAS. Whereas similar grain yield was recorded in plot weeded once at 6 WAS and that hoe weeded at 3, 6 and 9 WAS in the field experiment. Biochar application of 20 t ha−1 gave optimum maize yield. Among the weed control treatments manual weeding either at 6 WAS or at 3, 6 and 9 WAS recorded the highest grain yields. Therefore, incorporation of biochar with either preemergence herbicide or manual hoe weeding would enhance the growth and yield of maize.

scholarly journals Remote Laboratory for Measuring Linear Dimensions in the Process of E-Learning

2016 ◽  
Vol 12 (04) ◽  
pp. 43
Author(s):  
Jovan Šulc ◽  
Dragan Šešlija ◽  
Slobodan Dudić ◽  
Ivana Milenkovic
Keyword(s):  
Linear Dimension ◽  
Remote Access ◽  
Remote Laboratory ◽  
The Real ◽  
Linear Dimensions ◽  
E Learning ◽  
Set Up ◽  
Novi Sad ◽  
The University ◽  
And Control

Remote Laboratory for Measuring Linear Dimensions with remote access and control via Internet is developed and described in this paper. The system is realized at the University of Novi Sad, Faculty of Technical Sciences. This lab is dedicated to the students of secondary vocational schools and faculties with the aim to gain knowledge regarding linear dimension and mechanical component tolerance. Every user of this set-up is able to interact, observe and learn through the real measurement processes via communication infrastructure.

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