ACCase inhibitor fractionation and glyphosate addition improve perennial sourgrass control

Glyphosate-resistant sourgrass is difficult to control, particularly when perennial, and strategies that improve the control efficiency against this grass and preserve the useful life of graminicides are warranted. Therefore, the present study aimed to answer the following questions: (i) Does fractionating the doses of ACCase inhibitors improve the control of perennial sourgrass? (ii) Does alternating the chemical groups cyclohexanediones (DIMs) and aryloxyphenoxypropanoates (FOPs) improve the control of perennial sourgrass, and does the order of their application affect sourgrass control efficiency? (iii) Does the addition of glyphosate to ACCase inhibitors improve to the control of perennial sourgrass resistant to 5-enol-pyruvyl-shiquime-3-phosphate synthase inhibitors? Two field experiments (I and II) were performed in 2018 and repeated in 2019. In experiment I, the treatments included a single or fractional application clethodim + quizalofop-P-ethyl (216 + 108 g a.i. ha-1), clethodim (216 g a.i. ha-1), and quizalofop-P-tefuryl (108 g a.i. ha-1), applied in the order of clethodim followed by quizalofop-P-tefuryl and vice versa, as well as a control treatment. In experiment II, the treatments included a single or fractional application of clethodim + quizalofop-P-ethyl (216 + 108 g a.i. ha-1) and clethodim (108 g a.i. ha-1), isolated or associated with glyphosate, as well as a control treatment. In both experiments, the interval between the fractional applications was 7 days. Percentage of control, number of tillers per plant, and height of sourgrass plants were determined. Compared with the unfractionated application, the fractionation of clethodim + quizalofop-P-ethyl and clethodim increased control by respectively 20-24 and 25-30%. Fractionated clethodim has greater

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Improvement Growth, Yield, and Seed Quality of Pea Plants Using Glass Fertilizers and Bio-Fertilizers.

10.21203/rs.3.rs-634380/v1 ◽

2021 ◽

Author(s):

Eman G. Sayed ◽

Mona A. Ouis

Keyword(s):

Plant Growth ◽

Rhizobium Leguminosarum ◽

Field Experiments ◽

Seed Quality ◽

Growth Yield ◽

Control Treatment ◽

Chemical Fertilizers ◽

Yield Attributes ◽

The Impact

Abstract A new glass fertilizer (GF) system of main composition 60P2O5.30K2O.3.5ZnO. 3.5MnO.3Fe2O3 was developed in response to the needs of pea plants with bio-fertilizers (Rhizobium leguminosarum. Bv.vicieae, Bacillus megaterium var phosphaticum, Bacillus circulans).GF was prepared by the traditional melt quenching technique at 1150°C. Characterization of prepared system was done using FTIR spectra before and after immersion in a simulated actual agriculture medium like 2% citric acid and distilled water. During two winter seasons, two successful field experiments were conducted at Cairo University's Eastern Farm to determine the impact of chemical, glass, and bio-fertilizers on plant growth, yield attributes, and seed quality of pea plant. Control treatment were without any addition of recommended chemical fertilizers and other treatments were full dose of recommended chemical fertilizers (100%RDF), glass fertilizers at rate 60 kg fed− 1, Glass fertilizers at rate30 kg fed− 1, 50% RDF ,100%RDF + bio-fertilizers, Glass fertilizers at rate 60 kg fed− 1 + bio-fertilizers, glass fertilizers at rate 30 kg fed− 1+ bio-fertilizers, 50%RDF + bio-fertilizers. Plots received 60 kg fed− 1 glass fertilizers + bio-fertilizers show the highest significant increment in plant growth, number and weight of pods plant− 1, number of grain pods− 1, grain yield, biological yield, P%, k% in pea leaves and quality of pea seeds compared with plots without any addition (control) in both seasons.

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New protectants for potato protection

The Agrarian Scientific Journal ◽

10.28983/asj.y2020i12pp4-7 ◽

2020 ◽

pp. 4-7

Author(s):

Grigoriy Leonidovich Belov ◽

Vladimir Nikolaevich Zeyruk ◽

Vladimir Anatolyevich Barkov ◽

Marina Konstantinovna Derevyagina ◽

Svetlana Viktorovna Vasilieva

Keyword(s):

Growth And Development ◽

First Generation ◽

Field Experiments ◽

Negative Impact ◽

Sandy Loam ◽

Control Treatment ◽

Potato Tubers ◽

Complete Protection ◽

Potato Beetle ◽

Two Component

In field experiments in the conditions of sod-podzolic sandy loam soils of the Moscow region, protectants were tested. Before planting potatoes, tubers were treated with a new two-component insectofungicide AVG – 0190 (Idikum, SC, iprodion, 133 g/l + Imidacloprid, 100 g/l + diphenoconazole, 6.7 g/l)-1.0 – 1.5 l/t and a mixture of the fungicide Syncler, SC (75 g/l fludioxonyl) and the insecticide Tabu Super, SC (Imidacloprid, 400 g/l and fipronil, 100 g/l)-0.2-0.3 l/t. According to the results of three-year tests, it was found that the etching of potato tubers before planting does not have a negative impact on the germination and biometric indicators of growth and development of potatoes. Their use helped to reduce the development and spread of rhizoctoniosis and provided almost complete protection of potatoes from the first generation of the Colorado beetle – during the mass appearance of older larvae and during the beginning of the departure of larvae for pupation. Biological efficacy against Rhizoctonia amounted to 58.8-66,3%, the Colorado potato beetle – 93,7 95.5 per cent. The use of new potato tuber protectants allowed to increase the gross yield by 6.2-7.1 t / ha or 30.9-35.3% compared to the control. Treatment of seed tubers with protectants helped to obtain a crop free from rhizoctoniosis and increase the yield of standard healthy potatoes by 57.7

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Evaluation of Multiple Impacts of Furfural Acetone on Nematodes In Vitro and Control Efficiency against Root-Knot Nematodes in Pots and Fields

Antibiotics ◽

10.3390/antibiotics9090605 ◽

2020 ◽

Vol 9 (9) ◽

pp. 605

Author(s):

Wanli Cheng ◽

Xue Yang ◽

Li Zeng ◽

Dian Huang ◽

Minmin Cai ◽

...

Keyword(s):

Field Experiments ◽

Plant Root ◽

Reduction Rate ◽

Disease Index ◽

Economic Losses ◽

Egg Hatching ◽

Root Knot Nematodes ◽

Control Efficiency ◽

The Impact

Root-knot nematodes (RKNs) seriously endanger agricultural development and cause great economic losses worldwide. Natural product furfural acetone (FAc) is a promising nematicide with strong attractant and nematicidal activities, but baseline information about the impact of FAc on the reproduction, egg hatching, feeding, and growth of nematodes and its pest control efficiency in field are lacking. Here, the inhibition effects of FAc on nematodes in vitro and its RKN control efficiency in pot and field were investigated. FAc inhibited the egg hatching of Meloidogyne incognita by 91.7% at 200 mg/L after 2 days and suppressed the reproduction, feeding, and growth of Caenorhabditis elegans in vitro. In pot experiments, FAc in various dosages reduced the disease index of plant root significantly. In field experiments, FAc exhibited control effect on RKNs equivalent to commercial nematicides avermectin and metam sodium, with a reduction in disease index by 36.9% at a dose of 50 mg/plant. FAc also reduced the population density of RKNs in soil, with a reduction rate of 75.3% at the dose of 750 mg/m2. No adverse effect was detected on plant growth after FAc application. These results provide compelling evidence for development of FAc as an appropriate alternative for current nematicides.

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Frost heaving in a boreal soil in relation to soil scarification and snow cover

Canadian Journal of Forest Research ◽

10.1139/x01-042 ◽

2001 ◽

Vol 31 (6) ◽

pp. 1084-1092 ◽

Cited By ~ 18

Author(s):

Urban Bergsten ◽

France Goulet ◽

Tomas Lundmark ◽

Mikaell Ottosson Löfvenius

Keyword(s):

Snow Cover ◽

Field Experiments ◽

Soil Surface ◽

Control Treatment ◽

Tree Seedlings ◽

Frost Heaving ◽

Humus Layer ◽

Soil Scarification ◽

Natural Snow ◽

Surface Ice

Vertical uplift of seedlings and rods on the soil surface and at a depth of 5 cm, and of reference trees, was monitored using a theodolite from autumn to spring in two adjacent field experiments on a silt soil in northern Sweden. Treatments involving scarification (control and square patches of 0.1, 0.2, 0.4, and 0.8 m at natural snow cover) and snow cover (simulated maximum cover, snow free, and natural cover for control and 0.4-m patches) were compared. For snow free and natural snow cover, diurnal variation of soil surface temperature, duration and magnitude of freezing temperatures, and uplift increased with patch size. At the end of the winter under natural snow cover, uplift of the soil surface and shallow soil was between 4.4 and 5.3 cm for the control treatment without scarification and the 0.1-m patch while the uplift for the 0.4- and 0.8-m patches reached 7.611.5 cm. The highest uplift value, 14.6 cm, was observed for the snow-free treatment with 0.4-m patches. Maximum uplift of trees averaged 4.4 cm, which was similar to values observed for seedlings and rods with an intact humus layer and a natural snow cover, indicating that the highest observed uplift was mainly due to needle and soil surface ice. In conclusion, size of the scarified area and duration and thickness of snow cover largely influence frost heaving of tree seedlings in a susceptible soil.

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Silage maize (Zea mays L.) seedlings emergence as influenced by soil compaction treatments and contact pressures

Plant Soil and Environment ◽

10.17221/3588-pse ◽

2011 ◽

Vol 51 (No, 7) ◽

pp. 289-295 ◽

Cited By ~ 3

Author(s):

O.F. Taser ◽

O. Kara

Keyword(s):

Bulk Density ◽

Contact Pressure ◽

Soil Compaction ◽

Field Experiments ◽

Penetration Resistance ◽

Mean Value ◽

Control Treatment ◽

Silage Maize ◽

Loam Soil ◽

Contact Pressures

Soil compaction caused by mechanical force affects the vegetative and generative plant growth. Field experiments were conducted to study the effects of soil compaction treatments and soil contact pressures on bulk density, penetration resistance and silage maize emergence in a clay-loam soil. Soil compaction treatments were applied while planting as follows: Compaction on furrow surface (F-surface), compaction on furrow bottom (F-bottom), compaction on inter row (I-row), and non-extra compaction as a control (C). The soil contact pressures of 0.025, 0.051 and 0.076 MPa were applied while the control was 0.0085 MPa. Significant differences between soil compaction treatments and contact pressures were recorded in bulk density, penetration resistance and silage maize emergence. Percentage of emerged seedlings increased as the soil contact pressure was increased slightly. The lowest mean percentage of emerged seedlings (52.63%) was obtained with 0.076 MPa contact pressure in F-surface treatment and the highest mean value (81.58%) was obtained with 0.025 MPa contact pressure in F-bottom compaction treatment. The control treatment gave the 69% mean value under the non-irrigated condition.

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Influence of organic sources of nutrients on vanilla (Vanilla planifolia) as an intercrop in coconut garden

Journal of Plantation Crops ◽

10.19071/jpc.2016.v44.i2.3102 ◽

2016 ◽

Vol 44 (2) ◽

Author(s):

H. P. Maheswarappa, V. Krishnakumar, ◽

Alka Gupta, A. Geetha Kumari

Keyword(s):

Field Experiments ◽

Sandy Loam ◽

Population Level ◽

Experimental Period ◽

Fertilizer Application ◽

Control Treatment ◽

Cow Dung ◽

Biogas Slurry ◽

Significant Difference ◽

Vigorous Growth

Performance of vanilla, as influenced by organic source of nutrition when grown as intercrop in coconut garden, was studied in sandy loam soil at ICAR-CPCRI, Kasaragod, Kerala for seven years. Field experiments were carried out with different sources of organic manures, recommended NPK fertilizer and no fertilizer treatments. Application of cow dung slurry (6 tonnes ha-1) resulted in vigorous growth of vine (vine length of 5.5 m) and higher number of beans per vine (208) and a significantly higher mean fresh yield of bean (1.87 kg vine-1). Application of vermicompost (5 kg plant-1) + biofertilizers (Bacillus and Azospirillum) and vermiwash were on par and recorded mean fresh yield of 1.47 kg vine-1 and 1.30 kg vine-1, respectively. Control treatment without fertilizer application recorded significantly lower fresh bean yield (0.55 kg vine-1) due to lower number of beans per vine (72 nos.). In the rhizosphere of vanilla, no significant difference for either bacterial or actinomycetes population was noticed among the treatments. The fungal population differed significantly among the treatments and the highest population level was found with application of biogas slurry (62.1x103cfu g-1 soil), which was on par with application of cow dung slurry (59x103 cfu g-1 soil). Among the function specific microbial communities, the highest population of P-solubilisers (98x103 cfu g-1 soil) was recorded in the biogas slurry treatment, and it was the lowest in control and vermiwash application treatments. The average coconut yield realized during experimental period(2004-05 to 2009-10) was 136 nuts per palm, recording 53 per cent increase in yield compared to pre-experimental yield (89 nuts per palm).

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Induced Resistance to Blackleg (Leptosphaeria maculans) Disease of Canola (Brassica napus) Caused by a Weakly Virulent Isolate of Leptosphaeria biglobosa

Plant Disease ◽

10.1094/pd-90-1059 ◽

2006 ◽

Vol 90 (8) ◽

pp. 1059-1064 ◽

Cited By ~ 12

Author(s):

Y. Chen ◽

W. G. D. Fernando

Keyword(s):

Brassica Napus ◽

Field Experiments ◽

Leptosphaeria Maculans ◽

Fungal Species ◽

Control Treatment ◽

Water Control ◽

Pathogenicity Group ◽

Weakly Virulent ◽

Leptosphaeria Biglobosa ◽

Highly Virulent

Blackleg of canola is a disease complex of at least two fungal species: Leptosphaeria maculans and L. biglobosa. Isolates of L. biglobosa typically are weakly virulent or avirulent and are assigned to pathogenicity group 1 (PG-1). Isolates of L. maculans are highly virulent and encompass pathogenicity groups PG-2, PG-3, and PG-4. In greenhouse tests, percent lesion/leaf area (PLLA) on cotyledons of two Brassica napus cultivars, Westar and Invigor 2153, was smaller when L. biglobosa (PG-1) was either pre- or co-inoculated at 0, 12, 24, and 48 h with virulent isolates of L. maculans in PG-2, PG-3, and PG-4. On six-leaf-stage plants of Westar, the PLLA declined significantly compared with the control when the lower leaves were treated with either PG-1 or salicylic acid, then challenged with a PG-2 isolate 24 h later. In addition, the activity of four enzymes (chitinase, β-1,3-glucanase, peroxidase, and phenylalanine ammonia lyase) was greatly enhanced at 48 and 72 h when cotyledons of Westar were inoculated first with PG-1 followed by PG-2 24 h later, compared with a water control treatment. Field experiments conducted in 2003 and 2004 showed decreased blackleg severity in plants inoculated with PG-1 alone or prior to PG-2 compared with plants inoculated with PG-2 alone or prior to PG-1.

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GROWTH AND YIELD OF OKRA AS INFLUENCED BY LIVE MULCH IN SAMARU, ZARIA

European Journal of Sustainable Development ◽

10.14207/ejsd.2012.v1n2p229 ◽

2012 ◽

Vol 1 (2) ◽

pp. 229 ◽

Cited By ~ 1

Author(s):

I. L HAMMA ◽

U. IBRAHIM ◽

S. M. YUSUF

Keyword(s):

Sea Level ◽

Field Experiments ◽

Agricultural Research ◽

Growth And Yield ◽

Control Treatment ◽

Teaching And Research ◽

Mean Values ◽

Cropping Seasons

Two field experiments were conducted at the Teaching and Research Farm of theInstitute for Agricultural Research; Ahmadu Bello University Zaria located on latitude11011’N, longitude 7038’E and 686m above sea level in the Northern Guinea SavannahEcological Zone of Nigeria in 2010 and 2011 cropping seasons. The objective of thestudy was to compare the yield of okra grown under different weed managementstrategies. The experiment consisted of four treatments namely: control, cucumber,watermelon and pumpkin. The experiment was laid out in a completely randomised blockdesign (RCBD) with three replications. From the results so far obtained, pumpkinsignificantly gave higher mean values in both growth and yield characters measured,whereas the control treatment, significantly gave lower mean values of both growth andyield parameters throughout the period of assessment.

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OF SOME FIELD TRAITS OF WHEAT TO ABA UNDER EFFECT OF WATER STRESS RESPONSE

IRAQI JOURNAL OF AGRICULTURAL SCIENCES ◽

10.36103/ijas.v48i4.353 ◽

2017 ◽

Vol 48 (4) ◽

Author(s):

Hashim & Ahmed

Keyword(s):

Growth Rate ◽

Water Stress ◽

Plant Height ◽

Field Experiments ◽

Crop Growth ◽

Control Treatment ◽

Research Station ◽

Crop Growth Rate ◽

Effect Of Water ◽

Significant Difference

Two field experiments were carried out at the field crop research station- Abu-Ghraib of agricultural researches office during 2014-2015 and 2015-2016 to investigate effect of water irrigation quantities and ABA concentrations soaking and spraying on some morphological traits of wheat cultivar bahooth 10. Split plot arrangement by RCBD with three replicates for each experiment. First trial included for water irrigation volumes which control treatment (irrigation 50% of the water available), 70% and 40% from control treatment as well as rainy treatment (germination irrigation + rainfed) which occupied main plots while ABA soaking concentration (0, 1, 2, and 3) micromoles which occupied sub plots. Second experiment included same irrigation treatments which occupied main plots while ABA spraying concentration (0, 30, 60 and 90) micromoles occupied sub plots. Irrigation treatment 70% of first experiment produced plant height was 97.08 cm and flag leaf area 46.35 cm-2 and dry weight at 100% anthesis 1144.57 gm m-2. For second experiment control treatment gave highest values for duration from planting to 100% anthesis 113.41 and 111.50 day, number of tillers 388.95 and 403.18 tiller m-2 , the crop growth rate 10.61 and 11.31 g m-2 day for both season respectively with no significant difference with 70% of control treatment for both seasons. Soaking concentration 3 micromoles attained the highest value of number of tillers 338.58 and 354.20 tiller m-2, dry matter at 100% anthesis 970.10 and 1102.43 gm m-2, day the crop growth rate 8.85 and 10.16 gm-2 . day for both seasons respectively .While spraying 90 micromoles concentration gave the lowest values for plant height 82.63 and 88.22 cm, but the highest value for number of tillers 336.67 and 384.92 tiller m-2 , for both season , day the crop growth rate 9.13 and 9.05 g m-2 day for first season with did not differ significantly from 60 micromoles . Therefore could be conclude to capability of irrigation with 70% from full irrigation without signification effect in growth traits, as well as can be treat plant wheat with ABA concentration 3 and 60 micromoles soaking and spraying respectively to improve their ability to tolerance water stress .

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Characterization of Fusarium Spp. Inciting Vascular Wilt of Tomato and Its Management by a Chaetomium-Based Biocontrol Consortium

Frontiers in Plant Science ◽

10.3389/fpls.2021.748013 ◽

2021 ◽

Vol 12 ◽

Author(s):

Govindan Pothiraj ◽

Zakir Hussain ◽

Awani Kumar Singh ◽

Amolkumar U. Solanke ◽

Rashmi Aggarwal ◽

...

Keyword(s):

Complex Disease ◽

Field Experiments ◽

Geographic Origin ◽

Inter Simple Sequence Repeat ◽

Control Treatment ◽

Group Method ◽

Vascular Wilt ◽

Indian States ◽

Pair Group ◽

Wilt Incidence

Though the vascular wilt of tomato caused by the species of Fusarium is globally reported to be a complex disease in certain countries, for example, India, our studies indicated that the disease is caused by either Fusarium oxysporum f. spp. lycopersici (Fol) or Fusarium solani (FS) with the Fol being widely prevalent. In assessing the genetic diversity of 14 Fol strains representing the four Indian states by the unweighted pair group method with arithmetic averaging using Inter Simple Sequence Repeat (ISSR) amplicons, the strains distinguished themselves into two major clusters showing no correlation with their geographic origin. In pot experiments under polyhouse conditions, the seed dressing and soil application of a talc-based formulation of a biocontrol treatment, TEPF-Sungal-1 (Pseudomonas putida) + S17TH (Trichoderma harzianum) + CG-A (Chaetomium globosum), which inhibited Fol, was equally effective like the cell suspensions and was even better than the fungicidal mixture (copper oxychloride-0.25% + carbendazim-0.1%) in promoting the crop growth (52.3%) and reducing vascular wilt incidence (75%) over the control treatment, despite the challenge of inoculation with a highly pathogenic TOFU-IHBT strain. This was associated with significant expressions of the defense genes, indicating the induction of host resistance by a biocontrol consortium. In field experiments on two locations, the bioconsortium was highly effective in recording maximum mean fruit yields (54.5 and 60%) and a minimum mean vascular wilt incidence (37.5%) in comparison to the untreated control. Thus, Chaetomium-based bioconsortium demonstrated consistency in its performance across the two experiments in 2 years under the two field conditions.

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