scholarly journals Mefenpyr-diethyl as a safener for haloxyfop-methyl in bahiagrass

2021 ◽  
Author(s):  
Roque de Carvalho Dias ◽  
Leandro Bianchi ◽  
Vitor Muller Anunciato ◽  
Leandro Tropaldi ◽  
Paulo Vinicius da Silva ◽  
...  
Keyword(s):  
Electron Transport ◽  
Protective Effect ◽  
Plant Height ◽  
Electron Transport Rate ◽  
Transport Rate ◽  
Low Doses ◽  
Protective Response ◽  
Randomized Design ◽  
Dry Biomass ◽  
Completely Randomized Design

Abstract Mefenpyr-diethyl is a foliar-acting safener of the pyrazoline chemical group, and after its absorption, the metabolization and detoxification of herbicides occur in treated plants. Studies have demonstrated the protective effect of this safener for the herbicide fenoxaprop-P-ethyl in grass. Thus, this work aimed to evaluate whether a tank mixture of mefenpyr-diethyl has a protective response to haloxyfop-methyl in non-perennial bahiagrass. The experiment had a completely randomized design and was carried out in a greenhouse, using five replications with a 10x2 factorial scheme and ten doses of haloxyfop-methyl (0.00, 0.24, 0.49, 0.97, 1.95, 3.90, 7.79, 15.59, 31.28, and 62.35 g a.i. ha-1) in the presence or absence of a tank mixture of mefenpyr-diethyl (50 g a.i. ha-1). Phytotoxicity and electron transport rate (ETR) were evaluated at 7, 14, 21, and 28 days after application (DAA), in addition to plant height and dry biomass at 28 DAA. In general, phytotoxicity increased due to the higher levels of the herbicide haloxyfop-methyl. The application of mefenpyr-diethyl, in turn, provided lower levels of phytotoxicity, as well as lower reductions in ETR, height, and dry biomass when compared to untreated plants. These results show the safener action of a tank mixture of mefenpyr-diethyl on low doses of haloxyfop-methyl in non-perennial bahiagrass.

scholarly journals Comparison on biomass production of three fodder germplasms

2013 ◽  
Vol 42 (1) ◽  
pp. 35-39 ◽  
Author(s):  
AR Kanak ◽  
MJ Khan ◽  
MR Debi ◽  
ZH Khandakar ◽  
MK Pikar
Keyword(s):  
Organic Matter ◽  
Plant Height ◽  
Biomass Production ◽  
Crude Protein ◽  
Biomass Yield ◽  
Fresh Biomass ◽  
Randomized Design ◽  
Dry Biomass ◽  
Completely Randomized Design ◽  
Brachiaria Mutica

The experiment was conducted to study the comparison on biomass production of fodder germplasm. Para (Brachiaria mutica Stapf.), German (Echinochloa crusgalli L.) and Dhal (Hymenachne pseudointerrupta C. Muell) grasses were cultivated in a completely randomized design (CRD). The whole area was divided into nine plots. The area of each unit plot was 6 m x 6 m. Number of cuttings were 16,000 /hectare where Plant to Plant distance was 16 cm and row and raw distance was 16 cm. Equal amount of organic and chemical fertilizer were applied in all cutting. The fodders were first harvested after 60 days of planting, second and third after successive 60 days of re-growth. The findings of the study showed that fresh biomass (p<0.01) and dry biomass yield (p<0.05) of three fodder germplasm differed significantly. Crude protein and organic matter yield were significant (p<0.01) only in the second cutting. German grass was showed significantly higher in CP and OM yield (p<0.01) at second cutting than other grasses. However, no significant effect on plant height was observed among three grasses. From the above findings it may be concluded that among the three fodder germplasm, German fodder showed best result in respect of biomass production. DOI: http://dx.doi.org/10.3329/bjas.v42i1.15772 Bang. J. Anim. Sci. 2013. 42 (1): 35-39

scholarly journals Glyphosate as Growth Regulator for Bahiagrass and Broadleaf Carpetgrass

2019 ◽  
Vol 37 ◽  
Author(s):  
R.C. DIAS ◽  
T.S. DADAZIO ◽  
L. TROPALDI ◽  
C.A. CARBONARI ◽  
E.D. VELINI
Keyword(s):  
Plant Height ◽  
Growth Regulator ◽  
Digital Image Analysis ◽  
Clayey Soil ◽  
Grass Species ◽  
Green Cover ◽  
Randomized Design ◽  
Dry Biomass ◽  
Glyphosate Herbicide ◽  
Completely Randomized Design

ABSTRACT: The objective of this work was to evaluate the effect of glyphosate herbicide as growth regulator on two turfgrasses bahiagrass and broadleaf carpetgrass. The experiments were conducted in a greenhouse, using a completely randomized design, with 10 glyphosate rates (0, 5.625, 11.25, 22.5, 45, 90, 180, 360, 720, and 1.440 g a.e. ha-1) and four replicates. Bahiagrass and broadleaf carpetgrass plants were transplanted to 2 liter pots filled with a clayey soil. Phytotoxicity and green cover index (GCI) were evaluated through digital analysis; plant height at 7, 14, 21, and 28 days after application (DAA); and dry biomass of cuttings at 28 DAA. The glyphosate rates of 5.625 to 22.5 g a.e. ha-1 (for bahiagrass) and up to 90 g a.e. ha-1 (for broadleaf carpetgrass) reduced the plant growth, without affecting the plant visual quality phytotoxicity, GCI, and dry biomass in the evaluated periods. Contrastingly, rates equal to and above 45 g a.e. ha-1 (for bahiagrass) and equal to and above 180 g a.e. ha-1 (for broadleaf carpetgrass) caused phytotoxic effects in all evaluated periods and affected negatively plant height, GCI, and dry biomass, denoting the sensitivity of these grass species to these glyphosate rates. The digital image analysis allowed the verification and quantification of the effects of the herbicides on turfgrasses.

GROWTH RESPONSE OF BEHA GRASS (Brachiaria humidicola) FERTILIZED WITH GOAT MANURE

2021 ◽  
Vol 2 (3) ◽  
Author(s):  
Budiman Budiman ◽  
Natsir Sandiah ◽  
La Malesi
Keyword(s):  
Plant Height ◽  
Root Length ◽  
New Production ◽  
Brachiaria Humidicola ◽  
Randomized Design ◽  
Length Data ◽  
Number Of Leaves ◽  
Completely Randomized Design ◽  
Goat Manure ◽  
Difference Test

This study aimed to determine the best dosage of goat manure as a natural fertilizer on Beha grass(Brachiaria humidicola). This study used 64 poles of Beha grass grown in polybags divided into 16plots, and it used a completely randomized design (CRD) to analyze the data. This study consist of 4treatments that is P0 (0 ton/ha of goat manure), P1 (10 ton/ha of goat manure), P2 (15 ton/ha of goatmanure), and P3 (20 ton/ha of goat manure). This study's variables were plant height, number of leaves,numbers of tillers, new production, and root length. Data analysis used ANOVA variance continued withreal honest difference test. The result of this study showed that averages of plant height (cm) wereP0=26, P1=50.5, P2=51.5, and P3=52.75. Averages of the number of leaves were P0=22, P1=110,P2=160, and P3=185. Averages of numbers of tillers were P0=7, P1=25, P2=37, and P3=38. Averages ofnew production (g) were P0=17.75, P1=123.5, P2=178, and P3=192.25. Averages of root length (cm)were P0=37.8, P1=39.5, P2=41.775, and P3=49.5. Fertilization with natural fertilizer from goat manurehas a genuine effect (P<0.01) on the growth of Beha grass. The best dosage of fertilization with goatmanure was 15 ton/ha.

DIFFERENTIAL EFFECT OF SALINITY ON GROWTH, NUTRIENT CONCENTRATION AND CHLOROPHYLL IN SUGARCANE VARIETIES MEX 69-290 AND CP 72-2086

Agrociencia ◽  
2021 ◽  
Vol 55 (7) ◽  
pp. 597-610
Author(s):  
Odón Castañeda Castro ◽  
Miriam Cristina Pastelín Solano ◽  
Libia Iris Trejo Téllez ◽  
Eduardo Ariel Solano Pastelín ◽  
Fernando Carlos Gómez Merino
Keyword(s):  
Plant Height ◽  
Plant Performance ◽  
Saccharum Spp ◽  
Sugarcane Varieties ◽  
Randomized Design ◽  
Affected Plant ◽  
Nacl Concentration ◽  
Irrigation Solution ◽  
Completely Randomized Design ◽  
Better Than

Sugarcane (Saccharum spp. hybrids) is moderately sensitive to salinity and the effects on plant performance vary according to stress level and genotype. This study aimed to evaluate the effect of salt stress induced by application of different NaCl levels in the irrigation solution on plant height, indirect index of chlorophylls (SPAD), and macronutrients concentration (N, P, K, Ca, Mg and S) and Na in leaves of two sugarcane varieties: CP 72-2086 and Mex 69-290. The experiment was set in a completely randomized design with a 2×5 factorial arrangement. The study factors were sugarcane variety (CP 72-2086 and Mex 69-290) and NaCl concentration (0.0, 71.8, 143.6, 215.4 and  282.7 mM NaCl). Salinity as a single factor negatively affected plant height, SPAD units and N and P concentration in leaves; Ca concentrations increased, while K, Mg and S remained unaffected by the tested NaCl levels. Mex 69-290 grew higher and concentrated greater levels of N and K. Interactions of factors showed that salinity reduced growth in both varieties, but this reduction was more pronounced in CP 72-2086. SPAD units were also significantly reduced by salinity in both varieties. Concentrations of N and P in leaves decreased in both varieties in response to NaCl, while those of K and Ca increased in Mex 69-290. Concentration of Na was higher in Mex 69-290 which exhibited better performance than CP 72-2086. Sodium concentrations in leaves increased in direct relation to the tested NaCl concentrations. Mex 69-290 reached higher concentrations of Na in leave tissues but displayed better health than CP 72-2086. Thus, the variety Mex 69-290 showed more efficient Na-tolerance mechanisms related to Ca and K concentrations, and an indirect chlorophyll index better than CP 72-2086.

scholarly journals Updating the steady state model of C4 photosynthesis

2021 ◽  
Author(s):  
Susanne von Caemmerer
Keyword(s):  
Steady State ◽  
Electron Transport ◽  
Electron Transport Rate ◽  
Transport Rate ◽  
Initial Slope ◽  
Carboxylase Activity ◽  
Quantitative Correlation ◽  
Steady State Model ◽  
State Models

AbstractC4 plants play a key role in world agriculture. For example, C4 crops such as maize and sorghum are major contributors to both first and third world food production and the C4 grasses sugarcane; miscanthus and switchgrass are major plant sources of bioenergy. In the challenge to manipulate and enhance C4 photosynthesis, steady state models of leaf photosynthesis provide and important tool for gas exchange analysis and thought experiments that can explore photosynthetic pathway changes. Here the C4 photosynthetic model by von Caemmerer and Furbank (1999) has been updated with new kinetic parameterisation and temperature dependencies added. The parameterisation was derived from experiments on the C4 monocot, Setaria viridis, which for the first time provides a cohesive parametrisation. Mesophyll conductance and its temperature dependence have also been included, as this is an important step in the quantitative correlation between the initial slope of the CO2 response curve of CO2 assimilation and in vitro PEP carboxylase activity. Furthermore, the equations for chloroplast electron transport have been updated to include cyclic electron transport flow and equations have been added to calculate electron transport rate from measured CO2 assimilation rates.HighlightThe C4 photosynthesis model by von Caemmerer and Furbank (1999) has been updated. It now includes temperature dependencies and equations to calculate electron transport rate from measured CO2 assimilation rates.

scholarly journals The Effect of Guano Walet Fertilizer and Ratu Biogen Foliar Fertilizer on the Growth and Yield of Tomato (Lycopercicum esculentum Mill.) Monza Variety

AGRIFOR ◽  
2018 ◽  
Vol 17 (2) ◽  
pp. 231
Author(s):  
Dian Kristina ◽  
Abdul Rahmi
Keyword(s):  
Plant Height ◽  
Fertilizer Application ◽  
Fruit Weight ◽  
Factorial Experiment ◽  
Growth And Yield ◽  
Tomato Plants ◽  
Foliar Fertilizer ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
The Village

This experiment aims to: (1) to study of the effect of guano walet fertilizer and Ratu Biogen foliar fertilizeras well as their interaction on the growth and yield of tomato plants; and (2) to find proper dosage of guano walet fertilizer and proper concentration of Ratu Biogen foliar fertilizer for better growth and yield of tomato plants.The research carried out from May 2014 to July 2014, in the Village Melak Ulu RT.20 Subdistrict Melak, West Kutai. It applied Completely Randomized Design with factorial experiment 4 x 4 and five replications.  The first factor is the dosage of the guano walet fertilizer (G) consists of 4 levels, namely: no fertilizer application guano walet (g0), 10 Mg ha ̵ ¹, or 100 g of polybag ̵ ¹ (g1), 15 Mg ha ̵ ¹ or 150 g polibag ̵ ¹ (g2), 20 Mg ha ̵ ¹ or 200 g polybag ̵ ¹   (g3). The second factor is the concentration of Ratu Biogen (B) consists of 4 levels: without POC Ratu Biogen (b0), 1 ml 1 ̵ ¹ water (b1), 2 ml 1 ̵ ¹ water (b2), 3 ml 1 ̵ ¹  water (b3).Result of the research revealed that : (1) application of guano walet fertilizer affect very significantly on plant height at 14, 28, 42 days after planting, the number of fruits per plant, and weight of fruit per plant, but the effect is not significant on the days of plant flowered and days of plant harvest.  The best production is attained by the 200 g polybag-1 fertilizer guano walet (g3), namely 282,50 plant-1, In reverse, the least production is attained by without fertilizer guano walet (g0), namely 227,25 g plant ̵ ¹; (2) application of Ratu Biogen foliar fertilizer after significantly to very significantly on the plant height at 14 days after planting  and the number of fruits per plant, but the effect is no significant on the plant height at 28 and 42 days after planting, days of plant flowered, days of plant harvest, and weight of fruit per plant; and (3) interaction between guano walet fertilizer and Ratu Biogen foliar fertilizer no significantly on the plant height at 14, 28, and 42 days after planting, days of plant flowered, days of plant harvest, number of fruit per plant, and fruit weight per plant.

scholarly journals UJI PENGGUNAAN BERBAGAI MEDIA TUMBUH DAN PEMBERIAN PUPUK GROWMORE PADA AKLIMATISASI TANAMAN ANGGREK Dendrobium

2019 ◽  
Vol 15 (2) ◽  
pp. 105-114
Author(s):  
GUSTI MARLINA ◽  
MARLINDA MARLINDA ◽  
HENI ROSNETI
Keyword(s):  
Plant Height ◽  
Growth Media ◽  
Growing Media ◽  
Randomized Design ◽  
Honestly Significant Difference ◽  
Significant Difference ◽  
Number Of Leaves ◽  
Completely Randomized Design ◽  
Difference Test ◽  
Honestly Significant Difference Test

The research objective was determine the effect of various growth media and growmore fertilizer on the acclimatization of Dendrobium orchids. study used a Completely Randomized Design (CRD) Factorial consisting of 2 factors, the first is (M) of growing media which consists of 3 levels, namely: M1 (medium fern root), M2 (wood charcoal medium), M3 (coir media coconut) and the second is (G) growmore fertilizer which consists of 4 levels, namely: G0 (without Growmore fertilizer), G1 (Growmore fertilizer 2 g / liter), G2 (fertilizer Growmore 4 g / liter), G3 (Growmore fertilizer 6 g / liter). Determine the growth of orchid plants, observations were made with the following parameters Growth Percentage (%), Plant Height (cm), Number of leaves (strands), and Number of tillers (stems). Data obtained were analyzed statistically, then continued with the Honestly Significant Difference Test (BNJ) at the level of 5%. The results showed that the single treatment of the use of growing media did not have a significant effect on the parameters of observation of growth percentage (%), plant height (cm), number of leaves (strands), and number of tillers (stems). The growth of growmore fertilizer also did not show a significant effect on the parameters of observation of growth percentage (%), plant height (cm), number of leaves (strands), and number of tillers (stems). Interaction of the use of various growth media and growmore fertilizer did not show a significant effect on the percentage of growth (%), plant height (cm), number of leaves (strands), and number of tillers (stems).

scholarly journals Dosis dan Waktu Aplikasi Boron Terhadap Pertumbuhan dan Hasil Kacang Hijau

2020 ◽  
Vol 22 (2) ◽  
pp. 64
Author(s):  
Krisna Cahya Nurani ◽  
Susilo Budiyanto ◽  
Endang Dwi Purbajanti
Keyword(s):  
Plant Height ◽  
Seed Weight ◽  
Root Nodules ◽  
Fertilizer Application ◽  
Green Beans ◽  
Great Demand ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Legume Plants ◽  
Generative Phase

<p>Green beans are legume plants that are in great demand because of their high nutrition content and include plants that require boron to support growth from the vegetative to generative phase. The study aims to assess the growth and production of green beans due to influence of the dose and time of boron application. The research was carried out using completely randomized design with factorial pattern 3×3 with 3 replications. The first factor was the treatment of boron doses of 1, 1.5, and 2 kg/ha was given once at 7 Day After Planting (DAP), fertilizer application twice at 7 and 28 DAP, and once given at 28 DAP. The results showed that dose of boron at a dose of 1 kg/ha was able to produce the number of affective root nodules and the best pod weight. The treatment of boron once at 7 DAP can increase plant height, flowering age, pod weight, and seed weight per pod. The interaction between dose and time of boron application affects the number of affective root nodules and seed weight per pod.</p>

scholarly journals ALTERNATIVE SUBSTRATES FOR PRODUCTION OF YELLOW PASSION FRUIT SEEDLINGS

2020 ◽  
Vol 7 (1) ◽  
pp. 43-48
Author(s):  
Eduardo Santana Aires ◽  
Carlos Alberto Aragão ◽  
Itala Laiane Silva Gomes ◽  
Gilmário Noberto de Souza ◽  
Isa Gabriela Vieira de Andrade
Keyword(s):  
Plant Height ◽  
Dry Matter ◽  
Passion Fruit ◽  
Dry Matter Accumulation ◽  
Alternative Substrates ◽  
Randomized Design ◽  
Length Width ◽  
Number Of Leaves ◽  
Completely Randomized Design ◽  
Yellow Passion Fruit

This study aimed to evaluate different substrates to produce yellow passion fruit seedlings. For this purpose, an experiment was carried out in a greenhouse, from April to June 2016. A completely randomized design with five replications, in a 6 x 5 factorial scheme was used. The first factor was the alternative substrates (poultry, cattle and equine manure, sugarcane and coconut bagasse, and Organomais compost). The second factor was the replacement levels to the commercial substrate of Plantmax® (100:0, 75:25, 50:50, 25:75, 0:100). The seedling evaluation was carried out 42 days after sowing. The following variables were analyzed: length, width, and the number of leaves; plant height and shoot dry matter. A significant effect (P0.05) for the interaction between the factors was verified. The addition of 60% cattle manure and Organomais to the commercial substrate Plantmax® promoted greater length, width, and the number of leaves, plant height, and shoot dry matter accumulation in the yellow passion fruit seedlings.

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