Yield losses due to
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This study has built calculations using data sources at the provincial and local administrative levels of Tay Ninh province to better reflect spatial differences in the effects of ground-level O3 over the entire province.
16p viironman 02-06-2023 8 3 Download
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Citrus production is declining worldwide due to several biotic and abiotic factors. The diseases caused by Phytophthora spp. present major economic risks since they are soil-borne and spread quickly if environmental conditions are favorable, or irrigation is poorly managed. Phytophthora species are present in all citrus-producing areas around the world causing significant losses in crop yield and affecting tree health.
13p lyhuyenthu 31-01-2023 7 2 Download
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This work was carried out at Sers El-Lyain Agriculture Research Station Farm, El-Minufiya Governorate during 2007/08 and 2008/09 growing seasons to evaluate the amount of losses in the seed yield of the five faba bean cultivars Giza 3 Mohassen.
9p schindler 30-12-2021 15 0 Download
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Tomato leaf miner is an aggressive and invasive pest that causes serious damage in tomato production, resulting in up to 100% yield losses during serious outbreaks. The management of tomato leaf miner with synthetic pesticides is difficult due to its leaf mining habit, short life span, high reproductive rates, and insecticide resistance problem. In this study, sequences of the mitochondrial cytochrome oxidase I (mtCOI) gene of Tuta absoluta specimens were analyzed and compared with the available COI sequence data members from GenBank.
13p hanthienngao 30-11-2021 9 1 Download
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Orobanche cumana is a parasitic plant that can lead to advanced losses in yield of agricultural lands cultivating sunflower, depending on the sunflower varieties and the level of contamination. In our study, genetic diversity of six O. cumana populations from the Thrace region of Turkey was determined with the help of eight SSR (microsatellite) loci. All SSR loci were polymorphic. A total of 23 alleles were determined for the analyzed 120 samples. Allele number of each SSR locus ranged from two to six. Mean number of alleles (Na = 2.271), effective allele number (Ne = 1.
10p tudichquannguyet 29-11-2021 9 1 Download
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Understanding the genetic basis of frost tolerance (FT) in wheat (Triticum aestivum L.) is essential for preventing yield losses caused by frost due to cellular damage, dehydration and reduced metabolism. FT is a complex trait regulated by a number of genes and several gene families. Availability of the wheat genomic sequence opens new opportunities for exploring candidate genes diversity for FT.
24p vibeauty 23-10-2021 13 1 Download
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The fungus Aspergillus flavus (A. flavus) is a serious threat to maize (Zea mays) production worldwide. It causes considerable yield and economic losses, and poses a health risk to humans and livestock due to the high toxicity of aflatoxin.
18p vijichea2711 28-05-2021 4 1 Download
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Chickpea (Cicer arietinum L.) is the third most important pulse crop of the world grown in semi- arid and tropical climate. It belongs to family Fabaceae. The major losses in chickpea yield are attributed mainly due to soil borne pathogens. Among them the dry root rot (DRR) caused by Rhizoctonia bataticola has become a major threat to chickpea production in recent years.
8p trinhthamhodang11 27-04-2021 14 2 Download
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The yield losses in the range of 48-80 per cent due to early blight (Alternaria solani) damage in tomato were reported from India, Canada, USA and Nigeria (Basu, 1974; Datar and Mayee, 1984; Mathur and Shekhawat, 1986; Sherf and MacNab, 1986; Gwary and Nahunnarao, 1998 and Pandey and Pandey, 2002). The annual economic yield losses due to early blight have been estimated at 79% (Adhikari and Panthee, 2017).
8p chauchaungayxua11 23-03-2021 14 2 Download
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Cowpea [Vigna unguiculata (L.) Walp.] is a legume whose immature pods are consumed and marketed. However, it suffers yield losses due to attacks of aphid-transmitted mosaic disease. The present work is a study of the genetic resistance of twelve (12) varieties of vegetable cowpea to Cowpea Aphid-Borne Mosaic Virus (CABMV) at Kamboinsé. The objective of the study was to contribute to the enhancement and improvement of yields through the development of vegetable cowpea varieties resistant to CABMV.
12p chauchaungayxua11 23-03-2021 13 2 Download
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The maximum yield potential of Bt cotton is yet to be trapped under irrigated conditions which is low for various reasons. Among the different constraints in cotton major reduction in yield is due to leaf reddening which results in 30-60% of yield loss. Leaf reddening in cotton is also known as red leaf disease (lal patti). This disorder is an outcome of interaction of location, variety, environmental condition and nitrogen, potassium, magnesium etc. supply.
9p trinhthamhodang1218 26-02-2021 9 2 Download
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This study was aimed at quantifying yield loss due to high temperature induced damages on head rice recovery in rice. Fifteen rice varieties were evaluated over 3 seasons and their head rice recovery was estimated. Results of this study revealed that day temperature had no influence on the head rice recovery whereas night temperature had negative impact on head rice recovery at p < 0.05.
6p trinhthamhodang1218 26-02-2021 9 1 Download
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The yield losses in maize due to turcicum leaf blight were determined by using two susceptible maize cultivars viz., CM-202 and CM-219 J under artificial epiphytotic condition. The experimented was conducted with two treatments i.e., inoculated with Exserohilum turcicum pathogen culture (conidiospores) through leaf whorl inoculation starting from 25 days after sowing and protected with spray of Hexaconazole @0.2 per cent. The maximum grain yield loss recorded in CM-219 J (37.64 %) followed by CM-202 (30.94 %).
4p gaocaolon9 22-12-2020 11 2 Download
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A survey was conducted on Swarna cultivar (MTU 7029) of rice during Kharif 2013, 2014, 2015 and 2016 at Nadia district of West Bengal to record the fungal disease and their respective yield loss. Ten diseases (Leaf blast, Sheath blight, Sheath rot, Brown spot, Brown Leaf Spots caused by Curvularia lunata, Stackburn disease, Leaf spot caused by Nigrospora oryzae, Stem rot, Rotting by Choanephora cucurbitarum and False smut) were based on visual observation on Swarna rice cultivar and yield loss due to respective disease was calculated by measuring test weight (gm) of rice grains.
12p caygaocaolon8 07-11-2020 11 2 Download
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Of late, rice root-knot nematode, Meloidogyne graminicola has emerged as a major threat throughout the world due to its adoptable nature, broad host range and ability of causing potential yield loss. The losses caused by M. graminicola may vary from 16-80 %. The daignostic symptoms of root knot disease of rice are, stunted growth, yellowing, and gall formation on the roots of rice plants. The degree of symptom manifestation depends on several factors, viz., time of infection, age of the plants and load of inoculums.
29p angicungduoc8 07-11-2020 5 1 Download
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Wilt caused by Fusarium oxysporium f. spciceris is a devastating disease of chickpea. It occurs in 2 stages; seedling stage (0-30%) and reproductive stage (0-57%). Annual chickpea yield loss due to Fusarium wilt was estimated to be 10% in India. So, our objective is to control chickpea wilt disease by using Trichoderma based biofilms as an alternative to chemical fungicides. Trichoderma viride is a potential antagonistic fungi which prevents diseases like wilt, brown rot, damping off, charcoal rot etc.
7p trinhthamhodang1215 23-09-2020 18 2 Download
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The present study was undertaken with the main objective of generating data on the yield losses caused by lepidopteran pests in castor...
5p nguaconbaynhay7 15-08-2020 18 1 Download
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Collar rot (Sclerotium rolfsii Sacc.) of chilli (Capsicum annuum L.) is one of the devastating soil-borne diseases of fungal origin, due to which 16–80% yield loss is recorded annually according to the severity of the disease. An integrated disease management approach was developed for the management of collar rot of chilli using fungicide, biocontrol agents and an organic amendment.
8p nguaconbaynhay7 15-08-2020 21 1 Download
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Basal rot is a major fungal disease that occurs in onion crop caused by Fusarium oxysporum f. sp. cepae (Hanazawa) Snyder &Hansen. Severe yield losses occur in the onion crop due to the rotting of bulbs. Survey was conducted in onion growing areas of Tirunelveli, Thoothukudi and Tenkasi districts and five isolates of Fusarium were isolated under in vitro. The isolates were confirmed by both morphological and cultural characters.
8p nguaconbaynhay7 15-08-2020 11 2 Download
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Lakhimpur is a district of Assam which is most frequently affected by flood due to its topography. During periods of heavy rainfall in this region, sali (winter) rice is mostly affected and farmers suffer a great loss in income. Thus, considering the loss of the farmers, Krishi Vigyan Kendra Lakhimpur has introduced stress tolerant rice variety “Ranjit sub-1” developed by Assam Agricultural University in few pockets of the district. The variety was demonstrated during 2018-19 and 2019-20 using improved cultivation practices.
7p caygaocaolon6 30-07-2020 14 1 Download