scholarly journals Evaluación de herbicidas graminicidas para el combate de gamalote (Paspalumfasciculatum Wild.) en palma aceitera (Elaeis guineensis).

2016 ◽  
Vol 6 ◽  
pp. 15 ◽  
Author(s):  
O. Fernández ◽  
R. A. Ortíz
Keyword(s):  
Weed Control ◽  
Oil Palm ◽  
Elaeis Guineensis ◽  
Block Design ◽  
Control Efficiency ◽  
The Third ◽  
Randomized Block Design ◽  
Weed Control Efficiency ◽  
Herbicide Transport

Bullgrass (Paspalum fasciculatum wild.) is one of the most prevalent weeds in the oil palm crop. The objective of the experiment was to compare its control with five herbicides. Three experiments were conducted to evaluate the herbicides haloxyfop-methyl (Galant 240 y Galant 75), fenoxaprop-pmethyl (Excel) and fluazifop-butyl (Fusilade II) at the rates of 50, 75, and 100 g ai/ha-1 and glyphosate (Round up) at the rate of 960 g ai/ha-1 during the first experiment; Galant 240, Galant 75 and Fusilade II at 100 g ai/ha-1 during the second experiment; Galant 240, Fusilade II at the rates of 75 and 100 g ai/ha-1 and glyphosate at 960 g ai/ha-1 during the third trial. A Completely Randomized Block design with four replications was used. Galant 240, Galant 75, and Fusilade II showed the best results as measured by weight of fresh weed, number of affected nodes (herbicide transport), and weed control efficiency percentage. Galant 240 at 100 g ai/ ha-1 was the most profitable option.

Optimizing the Application Time of Pre-emergence Herbicide Pendimethalin and Oxyfluorfen Application for Effective Weed Management in Irrigated Blackgram (Vigna mungo L.) and Its Residue Persistence

2021 ◽  
Author(s):  
S. Selvakumar ◽  
R. Ajaykumar ◽  
A. Ammaiyappan
Keyword(s):  
Field Experiment ◽  
Weed Control ◽  
Weed Management ◽  
Block Design ◽  
Vigna Mungo ◽  
Application Time ◽  
Herbicide Application ◽  
Control Efficiency ◽  
Randomized Block Design ◽  
Weed Control Efficiency

Background: Time of pre-emergence herbicide application is an important factor that decides the efficiency of herbicide. If the pre-emergence herbicide is not applied at appropriate time, it may cause ineffective weed control or toxicity to crops. With this background, a field experiment was conducted at TNAU, Madurai to optimize the time of pre-emergence herbicides namely pendimethalin and oxyfluorfen application for effective weed management in irrigated blackgram. Methods: The experiment was laid out in randomized block design with three replication. Treatments were application of pendimethalin at 0.75 kg ha-1 and oxyfluorfen at 0.2 kg ha-1 on 1, 2, 3, 4 days after sowing, weed free check and unweeded check. Result: Results of the study revealed that oxyfluorfen gave maximum weed control efficiency as compared to pendimethalin, but toxicity to the crop was observed when oxyfluorfen was sprayed after 2 days of sowing. Yield and economics were achieved higher with application of 0.75 kg ha-1 of pendimethalin at 2 DAS, which was on par with application of 0.2 kg ha-1 of oxyfluorfen at 1 DAS due to lesser toxicity. Application of 0.75 kg ha-1 of pendimethalin and 0.2 kg ha-1 of oxyfluorfen didn’t leave any herbicide residue after harvest. Hence, application of 0.75 kg ha-1 of pendimethalin at 2 DAS and 0.2 kg ha-1 of oxyfluorfen at 1 DAS can be recommended for effective weed management in irrigated balckgram.

scholarly journals Weed dynamics, weed control efficiency and yield of aerobic rice as influenced by different weed management practices in eastern U.P.

2020 ◽  
Vol 41 (6) ◽  
pp. 1735-1740
Author(s):  
R.K. Parihar ◽  
◽  
V.K. Srivastava ◽  
S. Kumar ◽  
V. Kumar ◽  
...  
Keyword(s):  
Grain Yield ◽  
Weed Control ◽  
Weed Management ◽  
Management Practices ◽  
Block Design ◽  
Aerobic Rice ◽  
Control Efficiency ◽  
Randomized Block Design ◽  
Weed Control Efficiency ◽  
Broad Leaf

Aim: To identify the best sequence of pre- and post-emergence herbicides for achieving better weed control efficiency in aerobic rice. Methodology: A field experiment was conducted in Randomized Block Design with eleven treatment combinations, replicated thrice.? The dominant weeds in field were C. dactylon, E. colona and E. crusgalli among grasses, C. rotundus, C. difformis and F. maliaceae among sedges and C. axillaris and P. niruri among broad-leaf weeds. Treatments consisting sequential application of two pre-emergence application [Pendimethalin (30 EC) @ 1.00 kg a.i. ha-1; Butachlor (50 EC) @ 1.5 kg a.i. ha-1] followed by three post emergence herbicides [Bispyribac-Na (10% SC) @ 35 g a.i. ha-1; 2, 4-D Na salt (80 WP) @ 0.06 kg a.i. ha-1; Almix (CME + MSM ) (20 WP) @ 40 g a.i. ha-1] and straw mulching @ 4 t ha-1;? Mechanical weeding at 20 and 45 DAS, weed free and unweeded check.? Results: Among herbicidal treatments, pre-emergence application of pendimethalin at 3-4 DAS fb Bispyribac-Na at 15-20 DAS as post-emergence was most effective in minimizing weed density (4.81 m-2), biomass (6.20 g m-2), weed index (1.11%) and in enhancing the weed control efficiency (84.50%), grain yield (3.68 t ha-1) and straw yield (4.87 t ha-1) over rest of the treatments. Interpretation: Sequential application of pendimethalin at 3-4 DAS fb bispyribac-Na at 15-20 DAS is prominent in enhancing herbicide efficacy and reducing weed flora abundance resulting in higher weed control efficiency and grain yield due to their broad spectrum weed control.

scholarly journals EFIKASI HERBISIDA PARAKUAT UNTUK PENGENDALIAN GULMA PADA BUDIDAYA KELAPA SAWIT (Elaeis guineensis Jacq) TANAMAN BELUM MENGHASILKAN

2020 ◽  
Vol 8 (2) ◽  
pp. 355
Author(s):  
Jatmiko Umar Sidik ◽  
Dad Resiworo Jekti Sembodo ◽  
Rusdi Evizal ◽  
Hidayat Pujisiswanto
Keyword(s):  
Weed Control ◽  
Oil Palm ◽  
Elaeis Guineensis ◽  
Block Design ◽  
Weed Species ◽  
Randomized Block Design ◽  
Immature Oil ◽  
Significant Difference ◽  
Bartlett Test ◽  
The Difference

Good plantation management is important to increase the productivity of immature oil palm plants, one of which is chemical weed control. This study aims to (1) determine the dosage of paraquat herbicide which is effective in controlling weeds in the area of immature oil palm plantations, (2) find out the differences in the composition of weed species on immature oil palm plates after application of the paraquat herbicide, (3) find out the phytotoxicity of paraquat herbicides in immature oil palm plants after the application of the paraquat dichloride herbicide. This research was carried out in the farmers' oil palm plantation in Jontor Village, Gayabaru District , Central Lampung Regency and Weed Laboratory of the Faculty of Agriculture, University of Lampung from November 2017 to February 2018. This research used a Randomized Block Design (RBD) with 4 replications and 6 treatments consisting dose of paraquat dichloride herbicide of 375g / ha, 500 g / ha, 625 g / ha, 750 g / ha, and mechanical weeding and without weed control (control). Homogeneity of the various data was tested by the Bartlett test, data additivity was tested by the Tukey test and the difference in the mean was tested with the Least Significant Difference (LSD) test at α 5 level. The result of the study showed that : (1) the herbicide paraquat dichloride dose of 375-750 g / ha effectively control weeds in total, weed leaf width of up to 8 week after application, weed grasses and weeds puzzle to 4 week after application, (2) the herbicide paraquat dichloride dose of 375-750 g / ha is effective in controlling Praxelis clematidea weeds up to 8 week after application, weed Ottochloa nodosa and Asystasia gangetica up to 4 week after application, (3) paraquate dichloride dosage levels 375-750 g / ha resulting in differences in weed composition at 4, 8 and 12 week after application , (4) dosages of 375 - 750 g / ha parakuat dichloride herbicides applied to dishes not poisoning immature oil palm plants.

scholarly journals PEMBERIAN BEBERAPA ZPT ORGANIK TERHADAP BEBERAPA VARIETAS BIBIT KELAPA SAWIT (Elaeis guineensis Jacq.) DI PRE-NURSERY

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Yazid Habiby Lubis ◽  
Mita Setyowati ◽  
Aboe B. Saidi
Keyword(s):  
Oil Palm ◽  
Elaeis Guineensis ◽  
Block Design ◽  
Coconut Water ◽  
Factor V ◽  
Organic Growth ◽  
Randomized Block Design ◽  
Elaeis Guineensis Jacq ◽  
Materials Used ◽  
Experimental Garden

The aims of this study was to determine the effect of several organic growth regulatory on several varieties of oil palm seedlings (Elaeis guineensis Jacq) in Pre Nursery. The research was carried out in the experimental garden of the Faculty of Agriculture, Teuku Umar University, West Aceh, from March until finished. The materials used were Organic growth regulatory in the form of 50 cc coconut water, 50 cc union extract and 50 cc bamboo shoot extract. While the varieties of oil palm seedlings are varieties that yangambi, simalungun and 239 from IOPRI Medan. This study used a factorial randomized block design (RBD) 4 X 3 with 3 replications. Giving growth regulatory (Z) consists of 4 levels, namely: Z0 = Control, Z1 = Coconut water, Z2 = Shallot Extract, Z3 = Bamboo Extract, while Variety factor (V) consists of 3 levels: V1 = Yangambi, V2 = Simalungun, V3 = 239. Observation parameters are increase in seedling height (cm), stem diameter (mm), number of leaf midribs (midrib), wet stover weight (g), number of roots (number) and root length (cm). Keywords: Growth Regulatory, Varieties, Oil Palm, Pre Nursery 

scholarly journals Optimization of Spray Fluid for Herbicide Application for Drones in Irrigated Maize (Zea mays L.)

2021 ◽  
pp. 137-145
Author(s):  
C. Supriya ◽  
P. MuraliArthanari ◽  
R. Kumaraperumal ◽  
A. P. Sivamurugan
Keyword(s):  
Zea Mays ◽  
Weed Control ◽  
Tamil Nadu ◽  
Zea Mays L ◽  
Block Design ◽  
Herbicide Application ◽  
Recommended Dosage ◽  
Control Efficiency ◽  
Randomized Complete Block Design ◽  
Weed Control Efficiency

A field experiment was conducted in a randomized complete block design to screen the optimum spray fluid of herbicide application for drone based on visual toxicity and weed control efficiency in maize (Zea mays L.) during the summer season (March 2021) at eastern block farms of Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu. Three herbicide treatments namely Atrazine, Tembotrione and 2, 4-D with recommended dosages, 75% and 125% as pre-emergence herbicides applied on 3 days after, early post-emergence herbicides applied on 15 days after sowing and post-emergence applied on 25 days after sowing respectively. Totally thirty treatments with different spray fluids such as 500, 400, 300, 200, 100, 80, 60, 40, 30 L ha-1 and 20 L ha-1 were replicated three times. The study revealed that T5- Recommended dosage of pre emergence Atrazine – early post emergence Tembotrione – post emergence 2, 4-D (spray fluid 100 L of water ha-1),T6- Recommended dosage of pre emergence Atrazine – early post emergence Tembotrione–post emergence 2, 4-D (spray fluid 80 L of water ha-1), T7- Recommended dosage of pre emergence Atrazine – early post emergence Tembotrione – post emergence 2, 4-D (spray fluid 60 L of water ha-1) and T8- Recommended dosage of pre emergence Atrazine – early post emergence Tembotrione – post emergence 2, 4-D (spray fluid 40 L of water ha-1) produced the best results with respect to phytotoxicity and weed control efficiency. Based on the results it was concluded that the application of spray fluid 80 L ha-1 was optimum for herbicide application through drones with recommended dosage pre emergence Atrazine 1 kg a.i ha-1 on 3 days after sowing – early post emergence Tembotrione 120 g a.i ha-1 on 15-20 days after sowing - post emergence 2, 4-D 1 kg a.i ha-1 on 30 - 35 days after sowing.

scholarly journals EFIKASI HERBISIDA ISOPROPILAMINA GLIFOSAT 240 g l-1 TERHADAP PERTUMBUHAN GULMA DI PERKEBUNAN KELAPA SAWIT (Elaeis guineensis Jacq) TANAMAN MENGHASILKAN

2021 ◽  
Vol 9 (02) ◽  
pp. 189
Author(s):  
Wasri Yaman
Keyword(s):  
Oil Palm ◽  
Elaeis Guineensis ◽  
Block Design ◽  
Randomized Block Design ◽  
Significant Difference ◽  
Homogeneity Of Variance ◽  
Glyphosate Herbicide ◽  
Elaeis Guineensis Jacq ◽  
Plantation Crops ◽  
And Control

Oil palm (Elaeis guineensis Jacq.) Is one of the most widely cultivated plantation crops in Indonesia. The decrease in productivity of oil palm is caused by presence of weeds around the plant that can be controled. One of the most commonly used controls is the use of the isopropylamine glyphosate herbicide. This research aims to determine the dosage of the Isopropylamine glyphosate herbicide which is oil palm yields. Determining changes in weed composition after application of Isopropylamine glyphosate herbicide in oil palm yields. Determining whether phytotoxicity occurs in oil palm yields after application of the Isopropylamine glyphosate herbicide. This research was conducted in oil palm plantations owned by farmers in Jontor Kenangasari Village, Seputih Surabaya District, Central Lampung Regency and the Weed Laboratory of the Faculty of Agriculture, University of Lampung, Gedong Meneng, Bandar Lampung.  The research was conducted using a randomized block design (RBD) with 6 treatments and 4 replications, namely various doses of isopropylamine glyphosate (360, 600, 480, and 720 g ha-1), manual weeding, and control.  Homogeneity of variance was tested using the Bartlet test, additivity was tested by the Tukey test, and the mean difference was tested by the Least Significant Difference Test (LSD) at the 5% level. The results showed that: (1) The isopropylamine glyphosate herbicide dose of 480-720 g ha-1 is effective in controlling  total weeds, grasses weeds, Brachiaria mutica weeds and Mikania micrantha weeds up to 12 MSA and the herbicide dose of 600-720 g ha-1 is effective in controlling wide leaf weeds, and Cyrtococcum acrescens weeds up to 8 MSA, (2) The isopropylamine glyphosate herbicide 360- 720 g ha-1 causes changes in weed composition  at 4, 8, and 12 MSA, and (3) Application of the isopropylamine glyphosate herbicide 360 - 720 g ha-1 on plant plates did not cause poisoning to oil palm plants.

scholarly journals TIME AND DIRECTION EFFECT OF BORON (B) AND SILICON (Si) APPLICATION ON OIL PALM (Elaeis guineensis) THROUGH LEAVES

2018 ◽  
Vol 4 (1) ◽  
pp. 16
Author(s):  
Ageng Kaloko
Keyword(s):  
Drought Stress ◽  
Oil Palm ◽  
Elaeis Guineensis ◽  
Block Design ◽  
Real Difference ◽  
Randomized Block Design ◽  
Significant Difference ◽  
Effects Of Drought ◽  
Direction Effect ◽  
Difference Test

This study was aimed to obtain the time and the effective way of giving B and Si for reducing the effects of drought. It had been implemented in Bendosari village, Madurejo village, Prambanan sub-district, Sleman regency. The study used 3x3 +1 factorial complete randomized block design (RAKL) with with 3 blocks as replicates. The first factor was the time of fertilization, the second factor was way of fertilization and added one control (control) without fertilization treatment. The data obtained were analyzed using the Varian Analysis (ANOVA) at the 5% level and continued by the smallest real difference test (LSD) and orthogonal contrast if the variance analysis showed a significant difference between treatments. The results showed that there was no interaction effect between time and direction of B and Si fertilization through leaves on all observed variables of oil palm seedlings exposed to drought stress.

scholarly journals Selection gains for bunch production in interspecific hybrids between “caiaué” and oil palm

2019 ◽  
Vol 54 ◽  
Author(s):  
Rui Alberto Gomes Junior ◽  
Ricardo Lopes ◽  
Raimundo Nonato Vieira da Cunha ◽  
Antônio José de Abreu Pina ◽  
Carlos Edmundo Quaresma ◽  
...  
Keyword(s):  
Oil Palm ◽  
Elaeis Guineensis ◽  
Block Design ◽  
Medium Term ◽  
Short Term ◽  
Elaeis Oleifera ◽  
Full Sibling ◽  
The Third ◽  
Randomized Complete Block Design ◽  
Selection Of

Abstract: The objective of this work was to estimate selection gains for bunch production in hybrids obtained from “caiaué” (Elaeis oleifera) parents from the Manicoré population and oil palm (Elaeis guineensis) parents from the La Mé population, from the third to the eighth year after planting. Thirty-nine full-sibling progenies were evaluated in experiments conducted in a randomized complete block design, with four replicates and 12 plants per plot. The genetic gain estimates were 27.6% for the ten best selected F1 individuals, 13.7% for the four best selected progenies from parents of both sexes, 6.4% for the selected progenies of the five best male parents, 6.0% for the selected progenies of the two best families from male parents, and 4.0% for the selected progenies of the best descendants from male parents. Genetic gains for bunch production can be achieved, in the short term, through selection restricted to male parents, and, in the medium term, through selection of both male and female parents and cloning of F1 individuals.

scholarly journals Pengaruh Pemberian Kompos Blotong Limbah Pabrik Gula Dan Mikoriza Terhadap Pertumbuhan Bibit Kelapa Sawit (Elaeis guineensis Jacq)

2019 ◽  
Vol 4 (1) ◽  
pp. 64
Author(s):  
Kartika Sari ◽  
Mardiana Wahyuni ◽  
Hardy Wijaya
Keyword(s):  
Oil Palm ◽  
Crop Yields ◽  
Elaeis Guineensis ◽  
Design Method ◽  
Block Design ◽  
Organic Fertilizer ◽  
Dry Weight ◽  
Organic Fertilizers ◽  
Sugar Mill ◽  
Randomized Block Design

Nursery success is one of the important things in the oil palm plantation business. Nurseries are the beginning of efforts to cultivate palm plants, so the nurseries must consider all the conditions that can affect the development of the growth of oil palm plants. One important requirement is to conduct nurseries that tend to be organic, which are environmentally friendly. The use of organic fertilizers and sustainable biological fertilizers is very important in increasing soil fertility, growth and crop yields. Organic fertilizer that used is sugar mill wasted blotong and biological fertilizer is mychorrhizal. To determine the effect of giving sugar mill waste blotong and mycorrhizal applications on P nutrient levels in the Main Nursery. This study uses factorial randomized block design method (RAK). First factor is blotong (B): B0= control, B1= 500 gr blotong/seed, B2= 100 gr blotong/seed. Second factor is Mycorrhizal (M): M0= control, M1= 10 gr mycorrhizal arbusculae/seed, M2= 20 gr mycorrhizal arbusculae/seed. 9 treatment combinations were obtained with 4 replications, so the total treatment was 36. Blotong compost application significantly affected palm seed height, canopy dry weight and root dry weight, while mycorrhizal application only significantly affected seed height. the combination between them two gives the best effect on B1M1 treatment.

Response of Cowpea [Vigna unguiculata (L.) Walp.] as Succeeding Crop to Residual Effect of Extreme Levels of Atrazine Administered in Preceding Maize (Zea mays L.)

2021 ◽  
Author(s):  
G. Bagwasi ◽  
C.R. Chinnamuthu ◽  
P. Murali Arthanari ◽  
P. Malarvizhi ◽  
C.N. Chandrasekhar
Keyword(s):  
Weed Control ◽  
Field Experiments ◽  
Block Design ◽  
Residual Effect ◽  
Cropping System ◽  
Dry Weight ◽  
Grain Legumes ◽  
Weed Density ◽  
Control Efficiency ◽  
Weed Control Efficiency

Background: Globally, grain legumes are the paramount family of agricultural crops following cereals. Generally, sequence cropping has manifested effectual in increasing farm productivity and profitability. However, sometimes herbicides administered in previous crop may be associated with phytotoxic effects that can later cause damage to the succeeding crops. The present study aimed to understand the residual effect of extreme levels of atrazine on succeeding cowpea under maize-cowpea cropping system. Methods: Field experiments were conducted during Kharif and rabi season of 2019-20 and 2020-21 in a randomized block design with eleven treatments, replicated thrice. Result: Residual effect of pre-emergence atrazine at 0.50 kg a.i. ha-1 followed by tembotrione at 120g a.i. ha-1 as post-emergence at 25 DAS recorded the lowest total weed density (4.41), total weed dry weight (9.81 g m-2) and highest weed control efficiency (39.25%) during rabi 2019-20 while during rabi 2020-21 lowest total weed density (5.03), total weed dry weight (10.68 g m-2) and highest weed control efficiency (39.65%) were noticed in pre-emergence atrazine 50% WP at 2.00 kg a.i. ha-1. Highest seed yield (788.67 and 842.33 kg ha-1) was obtained in weed free treatment.

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