scholarly journals Use of plant extracts from healthy soybean and potato plants for treatments of plants of the same species

2021 ◽  
Vol 10 (12) ◽  
pp. e225101220351
Author(s):  
Andre May ◽  
Luciana Fontes Coelho ◽  
Evandro Henrique Figueiredo Moura da Silva ◽  
Nilson Aparecido Vieira Junior ◽  
Ronaldo da Silva Viana ◽  
...  
Keyword(s):  
Marked Reduction ◽  
Potato Crop ◽  
Disease Incidence ◽  
Block Design ◽  
Statistical Design ◽  
Potato Plants ◽  
Randomized Block Design ◽  
Farmer Management ◽  
Tuber Defects ◽  
Absolute Control

The present study proposes to evaluate extracts from shoots of healthy soybean and potato plants for the treatment of plants of the same species cultivated subsequently. Two experiments were thus conducted separately after the soybean and potato inoculum production phases. For soybean, the experiment was laid out in a randomized-block design with five treatments and four replications, in which the following treatments were tested: 1. absolute control without inoculum or pesticides; 2. farmer management with pesticides, without inoculum; 3. use of inoculum, without insecticides; 4. use of inoculum, without fungicides; and 5. use of inoculum, without pesticides. In the soybean crop, the tested inoculum improved plant development and, increased the potassium content of the plant tissue as well as yield. For the potato crop, a randomized-block statistical design was adopted with two treatments and ten replications, using varieties Ágata and Atlantic. The following treatments were tested: 1. absolute control without inoculum, with pesticides; and 2. use of inoculum (foliar spraying), with pesticides. With the use of inoculum, varieties Ágata and Atlantic showed distinct responses regarding disease incidence and yield. Late blight was the disease that most affected both varieties, but only Atlantic showed a reduction in its incidence when the inoculum was applied. Variety Atlantic also exhibited an increase in the most valued commercial calibers, besides an increase in yield, with the use of the tested inoculum. Cultivar Ágata showed a marked reduction in tuber defects with the use of the inoculum on the plants.

scholarly journals Plant development, gas exchanges and pigments of Mesosphaerum suaveolens submitted to osmoconditioning and saline stress

2020 ◽  
Vol 80 (1) ◽  
Author(s):  
Francisco Romário Andrade Figueiredo ◽  
Jackson Silva Nóbrega ◽  
Reynaldo Teodoro de Fátima ◽  
Toshik Iarley da Silva ◽  
Rodrigo Garcia da Silva Nascimento ◽  
...  
Keyword(s):  
Irrigation Water ◽  
Saline Water ◽  
Block Design ◽  
Statistical Design ◽  
Saline Stress ◽  
Negative Effects ◽  
Gas Exchanges ◽  
Chlorophyll Pigments ◽  
Randomized Block Design ◽  
Dry Biomass

Salinity is one of the main plant abiotic stresses which affects the establishment and development crops. Hence, the search for technologies that minimize the damage caused by salinity is essential. The aim of the present work was to evaluate the effect of salinity stress and osmotic conditioning of seeds on the biomass, gas exchanges and chlorophyll pigments in Mesosphaerum suaveolens (L.) Kuntze. The statistical design adopted was a randomized block design, combined according to the Central Composite Design, referring to electrical conductivities of irrigation water and osmotic potentials, with minimum (- α) and maximum (α) values of 0.5 and 10.0 dS m-1 and 0.0 and -1.0 MPa, respectively, totaling nine combinations. The characteristics of dry biomass, gas exchange and chlorophyll indices were evaluated at 45 days after irrigation with saline water started. The salinity of irrigation water severely affected the dry biomass and the gas exchanges of M. suaveolens. Irrigation water of electrical conductivity above 3.2 dS m-1 caused reductions in chlorophyll a, b and total contents in M. suaveolens plants. Seed osmoconditioning did not attenuate the negative effects of saline stress on M. suaveolens plants.

scholarly journals POTENTIAL OF PLANT EXTRACTS AND FUNGICIDES FOR MANAGING FUSARIUM OXYSPORUM F. SPLYCOPERSICI

2018 ◽  
Vol 30 (1) ◽  
pp. 75 ◽  
Author(s):  
Gul B. Poussio ◽  
Manzoor A. Abro ◽  
Jamal U. D. Hajano ◽  
Muhammad I. Khaskheli ◽  
Khalid I. Rajput ◽  
...  
Keyword(s):  
Fusarium Oxysporum ◽  
Mycelial Growth ◽  
Disease Incidence ◽  
Block Design ◽  
Fungal Growth ◽  
Tomato Crop ◽  
Randomized Block Design ◽  
Sindh Province ◽  
Causal Fungus

Fusarium oxysporum f.sp. lycopersici (FOL) is a highly destructive fungal pathogen of tomato crop causing wilt disease which may reduce 10 to 90% yield. In Pakistan, tomato is widely grown in Sindh province, major territories are district Hyderabad, Tando Allahyar and Mirpurkhas. Thus, surveys of these territories were conducted to record intensity of the disease and confirm etiology. Furthermore, potential of different botanical pesticides and commercially available fungicides were tested to inhibit mycelial growth of the causal fungus. The experiment was laid down with complete randomized block design with three replications. The results showed that the disease was occurring in all locations with the range of 8-47 % incidence. F. oxysporum f.sp. lycopersici was predominantly isolated from the collected disease sample during survey and pathogenic nature of the fungus was tested on the tomato Golo variety through soil drenching method. The disease incidence of 30 and 42 % (72 % as total) was recorded in inoculated tomato plants at 20 and 40 DAI, respectively. Maximum (67 %) inhibition of the fungal growth was found by neem seed extracts at higher dose of 8 % concentration followed by 63 % with neem seeds and Eucalyptus at 6 and 8 %, respectively. Alternatively, the Nativo 75 WG fungicide was found most effective in reducing the redial mycelial growth of target fungus followed by Topsin-M at 1000 ppm where as Aliette and Melodedue fungicides were found least effective under in-vitro conditions.

scholarly journals COMPARISON OF TWO METHODS TO EVALUATE THE RESISTANCE OF HAZELNUT GENOTYPES TO EASTERN FILBERT BLIGHT

HortScience ◽  
1994 ◽  
Vol 29 (7) ◽  
pp. 742d-742
Author(s):  
C.J. Coyne ◽  
D.C. Smith ◽  
S.A. Mehlenbacher ◽  
K.B. Johnson ◽  
J.N. Pinkerton
Keyword(s):  
Control Method ◽  
Disease Incidence ◽  
Block Design ◽  
Relative Resistance ◽  
Randomized Block Design ◽  
Anisogramma Anomala ◽  
Causal Fungus ◽  
Second Year ◽  
Eastern Filbert Blight ◽  
High Doses

Resistant cultivars are a promising disease control method for eastern filbert blight, which is devastating hazelnut production in Oregon. In 1990, two studies were begun to evaluate the relative resistance of European hazelnut (Coyhls avellana) genotypes to the causal fungus, Anisogramma anomala. A randomized block design of 40 genotypes was planted using inoculated trees planted in the borders as the disease source. The first- and second-year disease incidence (percent) were compared to the published disease incidence (percent) based on exposing potted trees of 44 genotypes to high doses of inoculum. Disease incidence was significantly correlated between the two studies in 1991 (r =0.41, P = 0.02) and in 1992 (r =0.64, P = 0.001; rs = 0.35, 0.025 < P < 0.050). Three genotypes, however, showed no disease in the field, but they had disease in >70% of the potted tree study. A plot of disease incidence in the field planting indicates that the inoculum was present throughout the blocks.

scholarly journals Eco-friendly management of major diseases in jute (Corchorus olitorius L.)

2014 ◽  
Vol 6 (2) ◽  
pp. 541-544 ◽  
Author(s):  
P. N. Meena ◽  
A. Roy ◽  
B. S. Gotyal ◽  
S. Mitra ◽  
S. Satpathy
Keyword(s):  
Seed Treatment ◽  
Disease Incidence ◽  
Block Design ◽  
Trichoderma Viride ◽  
Corchorus Olitorius ◽  
Farm Yard Manure ◽  
Soil Application ◽  
Randomized Block Design ◽  
Fibre Yield ◽  
Cent Disease

Field experiment was conducted for disease management with seven eco-friendly treatments in Corchorus olitorius jute during 2012-2013 under randomized block design (RBD) in three replications with variety JRO-524. The ecofriendly treatment 50% N: P: K + seed treatments with Azotobacter and phosphorus solubilizing bacteria (PSB) @ 5g/Kg+ Trichoderma viride (seed treatment @ 5g/Kg of seed and soil application @ 2Kg/ha at 21DAS) + Psuedomonas fluorescens spray @ 0.2% at 45DAS was found superior with minimum per cent disease incidence (3.46 and 1.43%) as compared to control (13.17 and 4.96%). The second best treatment was found with Farm yard manure (FYM) @ 5t/ha + seed treatment with Azotobecter and PSB @ 5g/Kg+ T. viride (seed treatment @ 5g/Kg of seed and soil application @ 2Kg/ha 21DAS)+ P. fluorescencs spray @ 0.2% at 45DAS and showed 3.61 and 2.0% disease incidence. The treatment with N: P: K @ 60:30:30 and seed treatment with carbendazim 50WP @ 2g/Kg at 45DAS showed 4.56 and 2.10 % disease incidence. Dry fibre yield was highest (30.33q/ha) in the plots treated with FYM @ 5t/ha + seed treatment with Azotobacter and PSB @ 5g/Kg+ T. viride (seed treatment @ 5g/Kg of seed and soil application @ 2Kg/ha at 21DAS) + P. fluorescencs spray @ 0.2% at 45DAS) and it was lowest in untreated control (15.69 q/ha).Variation in yield was attributed due to difference in plant height.

scholarly journals Subsoiling and Its Effects on Root Yield and Quality of `Beauregard'

HortScience ◽  
2000 ◽  
Vol 35 (4) ◽  
pp. 569F-570
Author(s):  
W.R. Jester ◽  
B. Taylor ◽  
J.R. Schultheis ◽  
D.E. Adams
Keyword(s):  
Sandy Loam ◽  
Block Design ◽  
Statistical Design ◽  
The Other ◽  
Yield Increase ◽  
Yield And Quality ◽  
Randomized Block Design ◽  
Design For All ◽  
Dry Conditions ◽  
Root Quality

Five studies were conducted from 1997 to 1999 to determine the effects of subsoiling on root quality (i.e., root length and shape) and on yield of `Beauregard' sweetpotato. The statistical design for all five studies was a completely randomized block design with six replications (four in Goldsboro in 1997). All studies were conducted on Norfolk fine sandy loam soils. Two studies were done in 1997, one in Kinston and the other in Goldsboro, N.C.; two studies in 1998, one in Kinston and the other in Goldsboro; and one in 1999 in Kinston, N.C. Common treatments in the studies consisted of no subsoiling, V shank subsoil, 30 cm below row (56 cm from peaked ridge) and V shank subsoil, 46 cm below row (71 cm from peaked ridge). Roots were longer, had more creases, and were more misshapen due to ripping (regardless of subsoiling depth) in the 1997 Kinston test. No differences were detected in root quality due to subsoiling in the other four tests. Marketable and total yields were increased in both tests in 1997 with subsoiling; however, a similar yield increase was not obtained with subsoiling in 1998 and 1999. Jumbo yields were increased in Kinston in 1997 and Goldsboro in 1998 with subsoiling; the better response was obtained with 30-cm-depth subsoiling. Jumbo yields in 1999 were the same regardless of treatment. Canner and cull yields were similar in all tests across treatments. Yields may be increased with subsoiling in certain circumstances (i.e, drought or soils with hard pans), and can result in more off-shape roots and longer roots. It appears from these studies that yields may be increased with subsoiling; however, more off-shape roots may be produced, especially under dry conditions or where fields are not routinely subsoiled.

scholarly journals SELECTIVITY OF FLUAZIFOP-P-BUTYL IN YOUNG COFFEE PLANTS

2019 ◽  
Vol 14 (3) ◽  
pp. 302
Author(s):  
Giovani Belutti Voltolini ◽  
Dalyse Toledo Castanheira ◽  
Pedro Menicucci Netto ◽  
Ademilson De Oliveira Alecrim ◽  
Tiago Teruel Rezende ◽  
...  
Keyword(s):  
High Efficiency ◽  
Low Cost ◽  
Block Design ◽  
Statistical Design ◽  
Plant Morphology ◽  
Anatomical Characteristics ◽  
Anatomy And Physiology ◽  
Randomized Block Design ◽  
Coffee Plants ◽  
Coffee Cultivation

Weed control is fundamental in coffee cultivation due to their big interference, competing with the crop for water, light and nutrients. Among the control methods used, chemical control is highlighted, as a function of its high efficiency and low cost. However, due to application failures, herbicide drift phytotoxicity is common. Aiming at the search for selective active ingredients in coffee plants, the objective of this study was to evaluate the selectivity of the active ingredient Fluazifop-p-butyl in young coffee plants, and its effects on plant morphology, anatomy and physiology. The experiment was carried out in a greenhouse, with ‘Topázio MG 1190’ coffee plants (<em>Coffea arabica</em> L.), cultivated in pots with a capacity of 11 L substrate. The statistical design was randomized block design (RBD), with four replications and four doses of the herbicide, making up 16 experimental plots. Each plot consisted of three plants. The treatments were: 0%; 50%; 100% and 200% of the recommended commercial dose of the herbicide Fluazifop-p-butyl. The evaluations were performed at 120 days after application of the treatments. Morphological, physiological and anatomical characteristics were evaluated. Regardless of the evaluated characteristic, there was no difference between the doses of the herbicide. There were no visual phytotoxicity symptoms in the young coffee plants that received the herbicide Fluazifop-p-butyl. The growth of the coffee plants, as well as the physiological and anatomical characteristics, were not altered due to the application of the herbicide Fluazifop-p-butyl.

Effect of Biomethanated Spent Wash on Enzymatic Activities under Irrigated Condition

2017 ◽  
Vol 104 (4 - 6) ◽  
Author(s):  
Karthika Vadivel ◽  
◽  
Thangavel P ◽  
Avudainayagam S ◽  
Rajannan G ◽  
...  
Keyword(s):  
Block Design ◽  
Growth Period ◽  
Enzymatic Activities ◽  
Recommended Dose ◽  
Treatment Schedule ◽  
Soil Enzymatic Activity ◽  
Randomized Block Design ◽  
Rich Liquid ◽  
Distillery Spentwash ◽  
Absolute Control

The biomethanated distillery spentwash is a nutrient rich liquid organic waste obtained from molasses based distillery industries after biomethanation process. The effect of different levels and methods of spentwash application on soil enzymatic activity was examined through a field experiment using sesame c.var.VRI (Sv) 2 as the test crop at Research and Development Farm, The Sakthi Sugars Pvt. Ltd., Appakkudal, Erode District. The experiment was formulated with six treatments with four replications and laid out in a randomized block design. As per the treatment schedule, the calculated quantity of biomethanated distillery spentwash (DSW) was uniformly applied to the plots @ 25, 50, 75 and 100 % along with recommended dose of NP (19.4, 25.2, 58.3 and 77.77 L, respectively) before sowing as pre-sown application. In addition, one absolute control and a treatment with recommended dose of NPK (35:23:23 kg NPK/ha) have been imposed for comparison. The soil samples were collected at 30 d intervals and analyzed for the changes in soil enzyme activities. The results of the study showed that the enzymatic activities of the soil were substantially increased throughout the crop growth period due to biomethanated DSW application, compared to check. However, application of 100 % N through DSW (77.77 L/1200 m2) and 75 % N through DSW + 25 % N through inorganic source (58.3 L/1200 m2) was found to be significantly superior by increasing the activities of phosphatase (15.07 μg p-nitrophenol g-1 soil h-1), dehydrogenase (29.92 μg TPF g -1 soil h-1 ) and urease (10.97 μg NH4-N g-1 soil h-1), respectively.

scholarly journals Long-Term Biosanitation by Application of Coniothyrium minitans on Sclerotinia sclerotiorum-Infected Crops

1999 ◽  
Vol 89 (2) ◽  
pp. 141-147 ◽  
Author(s):  
M. Gerlagh ◽  
H. M. Goossen-van de Geijn ◽  
N. J. Fokkema ◽  
P. F. G. Vereijken
Keyword(s):  
Sclerotinia Sclerotiorum ◽  
Disease Incidence ◽  
Block Design ◽  
Coniothyrium Minitans ◽  
Trichoderma Spp ◽  
Final Population ◽  
Randomized Block Design ◽  
Second Year ◽  
Bean Crop

The effect of the fungal mycoparasite Coniothyrium minitans applied as a spray to crops infected with Sclerotinia sclerotiorum (causal agent of white mold) on contamination of soil with S. sclerotiorum sclerotia was studied in a 5-year field experiment. Sclerotial survival also was monitored during two subsequent years, when the field was returned to commercial agriculture. In a randomized block design, factorial combinations of four crops and three treatments were repeated 10 times. Potato (Solanum tuberosum), bean (Phaseolus vulgaris), carrot (Daucus carota), and chicory (Cichorium intybus), which are all susceptible to S. sclerotiorum, were grown in rotation. Plots were treated with C. minitans or Trichoderma spp. or were nontreated (control). Crops were rotated in each plot, but treatments were applied to the same plot every year. After 3 years during which it showed no effect on sclerotial survival, the Trichoderma spp. treatment was replaced by a single spray with C. minitans during the fourth and fifth years of the trial. The effect of treatments was monitored in subsequent seasons by counting apothecia as a measure of surviving S. sclerotiorum sclerotia and scoring disease incidence. Trichoderma spp. did not suppress S. sclerotiorum, but C. minitans infected at least 90% of S. sclerotiorum sclerotia on treated crops by the end of the each season. C. minitans lowered the number of apothecia compared with the other treatments during the second year after the bean crop. C. minitans reduced the number of apothecia by ≈90% when compared with the control and Trichoderma spp. treatments and reduced disease incidence in the bean crop by 50% during the fifth year of the trial, resulting in a slightly higher yield. In 1993, but not 1994, a single spray with C. minitans was nearly as effective at reducing apothecia as three sprays (monitored in 1995). The final population size of sclerotia in soil at the end of the 7-year period was lower in all C. minitans plots than at the beginning of the trial, even in plots where two highly susceptible bean crops were grown during the period. The results indicate that the mycoparasite C. minitans has the potential to keep contamination of soil with sclerotia low in crop rotations with a high number of crops susceptible to S. sclerotiorum.

scholarly journals Maize Sowing Speeds and Seed-Metering Mechanisms

2018 ◽  
Vol 10 (9) ◽  
pp. 468
Author(s):  
Antonio Tassio Santana Ormond ◽  
Carlos Eduardo Angeli Furlani ◽  
Mailson Freire de Oliveira ◽  
Rafael Henrique de Freita Noronha ◽  
Tiago de Oliveira Tavares ◽  
...  
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Statistical Design ◽  
Longitudinal Distribution ◽  
Final Population ◽  
Randomized Block Design ◽  
Velocity Effect ◽  
Displacement Speed ◽  
Sowing Machine ◽  
Seed Metering Device

The intensifying use of machines in agriculture to increase operational capacity requires investments in more powerful and automated machines capable of working at higher speeds to meet the demands of agricultural activities. The objective of this study was to evaluate the sowing quality of a second crop maize using a pneumatic sowing machine equipped with two seed-metering devices at different displacement speeds. The statistical design was a randomized block design arranged in 6 × 2 factorial, with 4 replications, totaling 48 experimental plots. Where it was tested two seed-metering mechanisms from different manufacturers denominated A and B, and 6 displacement speeds of approximately 2.0; 4.7; 6.5; 9.1; 10.3 and 12.3 km h-1. The seed-metering mechanisms were compared by mean test while displacement speeds were compared by regression plots. The initial and final plant populations, seed depth, seedling longitudinal distribution (normal, faulty and double spacing) and grain yield were also evaluated. Displacement speed and seed-metering devices showed significant interaction only for the percentages of normal, faulty, and double spacings. The initial and final population presented an isolated effect for both the seed-metering devices and velocities. The seed depth showed an isolated velocity effect. The grain yield showed a significant isolated effect from the analyzed seed-metering devices. The seed-metering device B operating at lower speeds had better performance in the sowing process.

scholarly journals The Comparison Production Growth of Potato Plants (Solanum Tuberesum, L) between Various Dosages of Biochar and Coffee Skin Compost

2020 ◽  
pp. 122-129
Author(s):  
. Khadijah ◽  
. Eliyin ◽  
. Mulyono ◽  
. Basyirah ◽  
. Amiruddin
Keyword(s):  
Plant Height ◽  
Crop Production ◽  
Potato Crop ◽  
Block Design ◽  
Growth And Yield ◽  
Potato Plants ◽  
Average Plant ◽  
Rice Husk Biochar ◽  
Potato Crops ◽  
Higher Doses

Potatoes (Solanum tuberesum, L) are one of the main foods for the needs of the world community. Therefore, increasing potato crop production is considered important. For this purpose, the utilization of a mixture of rice husk biochar with compost can provide the best results up to three times the planting season. Coffee skin can also be found in form of compost for the utilization process. However, due to the lack of farmer’s knowledge about the benefits that can be provided by skin compost to maintain the level of soil fertility. This study aims to analys the effect of biochar and coffee skin compost on the growth and yield of potato crops. Plant height, number of shoots, number of tubers per clump, and per plot tuber weight was a parameter of observation. This experiment used a factorial randomized planting block design using several doses of biochar and coffee skin compost.  The treatment of biochar dosage did not significantly affect all parameters observed. The treatment of the effect of doses of coffee skin compost had a very significant effect on plant height at all ages of observation. The average plant height increases with the higher doses of red coffee skin compost given has a very significant effect on the number of tubers per clump and the weight of per plot tubers. There was no real interaction between the biochar dose and the red coffee skin compost dosage against all observed parameters.

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