scholarly journals STUDY OF THE EFFECT OF FUNGICIDES IN FIELD CONDITIONS FROM VEGETABLE CROPS AGAINST TOMATO DISEASE.

2021 ◽  
Vol 102 (10) ◽  
pp. 813-815
Author(s):  
Gulchehra Kulmuminovna Xalmuminova ◽  
◽  
Gulasal Nurilloevna Sulaymonova ◽  
Keyword(s):  
Field Conditions ◽  
Vegetable Crops ◽  
Tomato Disease

Evaluation of Imazethapyr for Weed Control in Leafy Vegetable Crops

1996 ◽  
Vol 10 (2) ◽  
pp. 253-257 ◽  
Author(s):  
Joan A. Dusky ◽  
William M. Stall
Keyword(s):  
Regression Analysis ◽  
Weed Control ◽  
Crop Yield ◽  
Relative Sensitivity ◽  
Leafy Vegetable ◽  
Field Conditions ◽  
Vegetable Crops ◽  
Weed Species ◽  
Common Lambsquarters ◽  
Common Purslane

Imazethapyr was evaluated PRE and POST in five lettuce types and chicory under Florida field conditions. The relative sensitivity of leafy crop vigor (most sensitive to most tolerant) to imazethapyr PRE, based on 20% inhibition determined using regression analysis, was as follows: Boston > bibb > crisphead > romaine > leaf > escarole > endive. Leafy crop injury increased as the rate of imazethapyr applied POST increased, with all leafy crops responding in a similar manner. Surfactant addition increased imazethapyr phytotoxicity. Imazethapyr PRE treatments at 0.067 kg ai/ha provided greater than 80% control of livid amaranth, common purslane, flatsedge, and common lambsquarters. Imazethapyr POST at 0.067 kg/ha, with surfactant provided control greater than 85% of all weed species. Greater than 85% spiny amaranth control was provided by imazethapyr POST at 0.017 kg/ha. Use of surfactant with imazethapyr did not improve spiny amaranth control over imazethapyr with no surfactant. POST treatments did not decrease leafy crop yield compared with the hand-weeded check. Imazethapyr applied PRE reduced crop yield compared to the POST treatments and the hand-weeded control.

Effect of Native Bioinoculants on Vegetable Crops Grown on Alkaline Soil Under Field Conditions

2005 ◽  
Vol 7 (3) ◽  
pp. 75-90 ◽  
Author(s):  
Suman Kashyap ◽  
Satyawati Sharma ◽  
Padma Vasudevan
Keyword(s):  
Field Conditions ◽  
Alkaline Soil ◽  
Vegetable Crops

scholarly journals Influence of tomato genotype to phenolic compounds content and antioxidant activity as reaction to early blight

Genetika ◽  
2015 ◽  
Vol 47 (3) ◽  
pp. 1099-1110 ◽  
Author(s):  
Sladjana Medic-Pap ◽  
Dejan Prvulovic ◽  
Ana Takac ◽  
Slobodan Vlajic ◽  
Dario Danojevic ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Early Blight ◽  
Natural Infection ◽  
Alternaria Solani ◽  
Vegetable Crops ◽  
Disease Occurrence ◽  
Two Factors ◽  
Biochemical Level ◽  
Tomato Genotype ◽  
Tomato Disease

Early blight is one of the most common and destructive tomato disease and it is caused by the fungus Alternaria solani. The aim of this paper was to screen the reaction of ten tomato genotypes (collection of the Institute of Field and Vegetable Crops) against natural infection of early blight. Tested genotypes showed significant differences in the disease occurrence on leaves but not on fruits. However, at the biochemical level, total phenolics (TP), tannins (TT), flavonoids (TF) and antioxidant activity in tomato fruits was significantly affected by genotype, disease occurrence and interaction of these two factors. According to obtained results, content of these secondary metabolites could be used as a one of the parameters in the evaluation of tomato resistance to EB.

scholarly journals Suitable Hosts of Root Knot Nematode Attack: An Assessment on the Basis of Morphological Size Variations and Population Density under Field Conditions

2015 ◽  
Vol 4 (2) ◽  
pp. 87-92 ◽  
Author(s):  
Gamini Sahu ◽  
Surendra K. Gautam ◽  
Aditi N. Poddar
Keyword(s):  
Population Density ◽  
Crop Plants ◽  
The Body ◽  
Field Conditions ◽  
Vegetable Crops ◽  
Vegetable Crop ◽  
Root Knot Nematode ◽  
Root Knot Nematodes ◽  
Body Sizes ◽  
Meloidogyne Species

Root knot nematodes (Meloidogyne species) are major pests of vegetable crops causing serious losses in quantity and quality of crop yield. This study involves an assessment of their suitable hosts on the basis of variations in their population densities and body sizes in different vegetable crop plants under field conditions. A random survey of root knot nematode infestation in vegetable crops was conducted in 9 villages of Abhanpur block, Chhattisgarh state, Central India, from January 2012 to March 2012.  Diseased plants were identified on the basis of above ground symptoms and soil and root samples collected by digging. Extraction of nematodes was done by Cobb’s sieving and decantation method and Baerman’s funnel technique. Identification was done microscopically by morphological examination of perineal patterns of female nematodes. Body sizes were measured by using an eyepiece/ocular micrometer. Twenty nine percent of the total farm area surveyed suffered from root knot nematode attack. Among the several genera of vegetable crop plants surveyed, Lycopersicon esculentum, Dolichos lablab, Solanum melongena, Momordica charantia, Daucus carota,Capsicum annum,Cucumis sativus had root galls. Three species of root knot nematodes Meloidogyne incognita, M. javanica, M. areneria were identified from the above hosts and a comparative morphometric analysis of the body, head and neck size ratios of females were done. Non-significant body and head size variations existing between the females from D. lablab, S. melongena, C. annum, D. carota, L. esculentum showed that all the crops are equally susceptible to root knot nematode attack.  However, on the basis of nematode population density, D. carrota appears to be the best suitable host of the Meloidogyne species other than L. esculentum and S. melongena.

scholarly journals Cucumber green mottle mosaic virus in agroecosystems of Ukraine

2018 ◽  
Vol 76 (2) ◽  
pp. 71-78
Author(s):  
T. Rudnieva ◽  
T. Shevchenko ◽  
A. Shevchenko ◽  
I. Budzanivska
Keyword(s):  
Mosaic Virus ◽  
Open Field ◽  
Zucchini Yellow Mosaic Virus ◽  
Field Conditions ◽  
Yellow Mosaic Virus ◽  
Enzyme Linked Immunosorbent Assay ◽  
Watermelon Mosaic Virus ◽  
Vegetable Crops ◽  
Seed Material ◽  
Planting Material

Cucumber green mottle mosaic virus (CGMMV) is a widespread pathogen capable of infecting plants cultivated in both greenhouse and openfield conditions with equal efficiency. The host range of CGMMV is restricted to cucurbit plants whereas induced crop losses may reach 25–50 %. Despite the wide array of available antiviral techniques, CGMMV could not be completely removed from the seed/planting material. In Ukraine, Cucumber green mottle mosaic virus occurs almost exclusively on greenhouse cucumbers. However, data from other countries suggest wide spread of CGMMV on watermelons, melons, cucumbers and squashes grown in both greenhouse and open-field conditions. In this view and taking into account high pathogenicity of CGMMV, we aimed at studying spread of Cucumber green mottle mosaic virus in Ukraine on cucurbit plants in the open-field conditions. Methods: enzyme-linked immunosorbent assay, electron microscopy, statistical methods. Results : Spread of Cucumber green mottle mosaic virus (CGMMV) on cucurbit vegetable crops grown in open-field conditions was analyzed in Ukraine. It was shown that CGMMV is an extremely rare pathogen in open-field conditions in our country. Duringthelast 8 years we have confirmed only several cases of CGMMV infection on cucumbers, squash, pumpkin and melon in Kyiv and Poltava regions. Additionally, half of these cases were mixed infection of 2–3 viruses. From 250 collected samples, CGMMV was detected in 5 plants totaling to only 2,4 %. Importantly, monoinfection of CGMMV was shown exclusively on cucumbers and watermelons, whereas melons and squashes were mixed infected. Melons were typically infected with CGMMV and Watermelon mosaic virus 2 (WMV 2) or with WMV 2 and Zucchini yellow mosaic virus (ZYMV). Squash plants were infected with CGMMV and Cucumber mosaic virus (CMV).Consequently, we have checked commercially available seeds of cucumber, squash, zucchini, melon and watermelon from different producers in Ukraine for virus contamination and have confirmed the occurrence of CGMMV in some seed batches. Conclusions: Long-term observations in Ukraine showed that Cucumber green mottle mosaic virus infected mostly cucumbers cultivated in greenhouses and was only rarely found in cucurbits grown in open-field conditions. Screening of commercially available seed material indicated that 16 % of it was contaminated with CGMMV. Basing on available data, it is presumed that virus-contaminated seed material may pose a major threat of CGMMV occurrence and spread on cucurbits cultivated in open-field conditions.

scholarly journals Assessment of Serbian pepper varieties grown in conditions of South Bulgaria

Genetika ◽  
2017 ◽  
Vol 49 (1) ◽  
pp. 161-172
Author(s):  
Velichka Todorova ◽  
Ivo Djinovic
Keyword(s):  
Capsicum Annuum ◽  
Morphological Traits ◽  
Total Yield ◽  
Field Conditions ◽  
Maturity Stage ◽  
Vegetable Crops ◽  
Stem Height ◽  
Marketable Yield ◽  
Capsicum Annuum L ◽  
Research Institute

The comparative estimation was carried out with eight Serbian pepper varieties (Capsicum annuum L.) during the period 2010-2011 in field conditions at Maritsa Vegetable Crops Research Institute, Plovdiv, Bulgaria. The varieties were evaluated by some important morphological traits of the plant and fruit, total and marketable yield. The assessment by plant and stem height showed proved differences between them. Romansa and Ekstaza formed significantly longer fruits than other varieties while Amanda was with the lowest values by this trait but with the highest ones by the diameter at the base and flesh thickness. Romansa, Ekstaza and Delfina were most productive before maturity stage with 46.04 t ha-1, 45.31 t ha-1 and 45.13 t ha-1, respectively. The varieties which were evaluated by yield of the fruit at maturity stage showed non proved differences by total yield and their values were from 21.34 t ha-1 for Delfina to 24.41 t ha-1 for Slonovo uvo.

scholarly journals Control of weeds by paper mulch in vegetables and trees

2004 ◽  
Vol 57 ◽  
pp. 37-40 ◽  
Author(s):  
K.C. Harrington ◽  
T.A. Bedford
Keyword(s):  
New Zealand ◽  
Weed Control ◽  
Soil Surface ◽  
Field Conditions ◽  
Vegetable Crops

A commercially available paper mulch (EcoCover) was assessed for its persistence under field conditions and its ability to control weeds in vegetable crops and establishing trees Weeds were controlled as effectively by EcoCover in autumnplanted cabbage and lettuce crops as by black polythene mulches The paper mulch was beginning to break down by the time the crop was harvested Paper mulch that was buried decayed much faster than when left on the soil surface EcoCover was compared with residual herbicides black weed mat and another paper mulch (Korromatt) for controlling weeds under trees planted in spring Both types of paper mulch were prone to being dislodged by wind at exposed sites but otherwise provided weed control for about 6 months after being laid The potential uses of paper mulches for weed control in New Zealand are discussed

Sign in / Sign up

Export Citation Format

Share Document