scholarly journals Field evaluation of insecticides for control of turfgrass insect pests in West Virginia, 1969-1976

1977 ◽  
Author(s):  
Joseph E. Weaver
Keyword(s):  
West Virginia ◽  
Insect Pests ◽  
Field Evaluation

scholarly journals Field evaluation of extracts of five Nigerian spices for control of post-flowering insect pests of cowpea, Vigna unguiculata (L.) Walp.

2010 ◽  
Vol 41 (No. 1) ◽  
pp. 14-20 ◽  
Author(s):  
M. Oparaeke A ◽  
C. Dike M ◽  
I. Amatobi C
Keyword(s):  
Third World ◽  
Insect Pests ◽  
Limited Resource ◽  
Field Evaluation ◽  
Zingiber Officinale ◽  
Piper Guineense ◽  
Clavigralla Tomentosicollis ◽  
Insecticidal Efficacy ◽  
Lepidoptera Pyralidae ◽  
Xylopia Aethiopica

The insecticidal efficacy of aqueous extracts of five Nigerian spices (Piper guineense Schum and Thonn., Aframomum melegueta (Roscoe), Xylopia aethiopica (Dunal) A. Rich., Zingiber officinale L. and Capsicum annuum L.) was tested in a field study for the control of two important post-flowering insect pests, Maruca vitrata Fab. (Lepidoptera: Pyralidae) and Clavigralla tomentosicollis Stal. (Hemiptera: Coreidae) of cowpea. The extracts were applied at 10% (w/v) and sprayed every week for 4 weeks. P. guineense, followed by A. melegueta, significantly reduced (P < 0.01) abundance of the pests and decreased the damage to cowpea pods. Grain yields were significantly higher in plots treated with P. guineense and A. melegueta extracts compared to plots treated with other extracts. This technology is cheap, safe, environmentally friendly and easy to adopt by limited resource farmers in third world countries.

scholarly journals Field evaluation of water plant extracts on sucking insect pests and their associated predators in transgenic Bt cotton

2019 ◽  
Vol 29 (1) ◽  
Author(s):  
Muhammad Arshad ◽  
Muhammad Irfan Ullah ◽  
Naciye Sena Çağatay ◽  
Asad Abdullah ◽  
Fatma Dikmen ◽  
...  
Keyword(s):  
Plant Extracts ◽  
Insect Pests ◽  
Field Evaluation ◽  
Bt Cotton ◽  
Transgenic Bt Cotton ◽  
Water Plant

scholarly journals Genetic engineering: An additional tool for plant improvement

1992 ◽  
Vol 1 (3) ◽  
pp. 323-338 ◽  
Author(s):  
S. Mohan Jain ◽  
Christian Oker-Blom ◽  
Eija Pehu ◽  
R. J. Newton
Keyword(s):  
Transgenic Plants ◽  
Genetic Engineering ◽  
Patent Protection ◽  
Insect Pests ◽  
Plant Genetic Resources ◽  
Field Evaluation ◽  
Marker Genes ◽  
Specific Gene ◽  
Additional Tool ◽  
New Genes

Advances in gene transfer technologies have enabled the production of both monocot and dicot transgenic plants. With the biolistic method, genes can be transferred in recalcitrant crop plants and forest trees, independent of their genotype. Inexpensive methods for both stable and transient gene transfers - ultrasonication, direct DNA insertion during imbibition using somatic embryos, and silicon carbide fibres - have been developed. The frequency of Agrobacterium-mediated transformation rates of cloned genes can be enhanced in plant cells. The analysis of molecular markers (RFLPs, RAPDs, DNA fingerprints) can accomplish the characterization, gene mapping and identification and certification and patent protection of cultivars. With PCR, selective amplification of a specific DNA segment from a small amount of an organism’s total DNA can be used toidentify transgenic cultivars. The expression of a target gene can be inhibited with antisense RNA. So far, a limited number of genes have been identified and cloned with genetic engineering. With specific gene transfers, many goals such as biological control of insect pests and fungi, male sterility, virus resistance, improving seed protein, and production of transgenic plants as “bioreactors” can be accomplished. T-DNA mutagenesis may lead to learning more about the genetic control of plant development and morphogenesis, and isolation of useful mutants. Before genetic engineering becomes a reliable tool of plant breeding, more attention is needed to explore: (a) new plant genetic resources in order toidentify and clone new genes, (b) fate of selective and scorable marker genes, and (c) field evaluation of transgenes in transgenic plants.

Field evaluation of Carifend® net for the protection of stored tobacco from storage insect pests

2019 ◽  
Vol 81 ◽  
pp. 46-52 ◽  
Author(s):  
C.G. Athanassiou ◽  
C.I. Rumbos ◽  
V.K. Stephou ◽  
M. Sakka ◽  
S. Schaffert ◽  
...  
Keyword(s):  
Insect Pests ◽  
Field Evaluation

scholarly journals FIELD EVALUATION OF FIVE WHEAT VARIETES AGAINST INSECT PEST INFESTATION

2021 ◽  
Vol 5 (9) ◽  
Author(s):  
Dhananjoy Kumar Mahato ◽  
Md. Mizanur Rahman ◽  
Sadhan Kumer Guha Magumder ◽  
Kazi Md. Abu Sayeed ◽  
Md. Abu Zafur Al Munsur
Keyword(s):  
Insect Pests ◽  
Block Design ◽  
Insect Pest ◽  
Wheat Variety ◽  
Field Evaluation ◽  
Grain Filling ◽  
Leaf Beetle ◽  
Filling Stage ◽  
Physical Resistance ◽  
Grain Filling Stage

The experiment was conducted to evaluate the infestation status of insect pest on different wheat variety. Five wheat variety (BARI GOM -24, BARI GOM-25, BARI GOM-27, BARI GOM-28and BARI GOM-29) were used as a test crop to conduct the study. The experiment was laid out in Randomized Complete Block Design with three replications. Total 5 insect pests were found from this experiment among wheat aphid and wireworm as major and leaf hopper, grass hopper and cereal leaf beetle as minor insect of wheat. The highest insect pest was found in grain filling stage and lowest was found in panicle initiation stage. In grain filling stage, the lowest number of aphid (6.26) was recorded from BARI GOM-29 and the highest number of wheat aphid (9.11) was found in BARI GOM-24. Effect of different varieties of plant height, filled grain, unfilled grain, weight of 1000 grain and yield showed significant. The highest yield (3.56 tha-1 ) was recorded in BARI GOM-29 and the lowest yield 2.29 tha-1 was recorded in BARI GOM-25. The highest percentage of infested spike hill-1 was recorded in BARI GOM-27 and lowest was found in BARI GOM-29. The lowest yield loss (31.53%) was recorded in BARI GOM-29. This is might be due to physical resistance of the varieties. BARI GOM-29 recommended to wheat growers as it is found the most resistant/tolerant wheat cultivar against wheat insect pest with maximum grain yield as compared to other cultivars.

scholarly journals Field Evaluation of Plant Extracts for the Control of Diamond Moth (Plutella xylostella Linnaeus) Infesting Cabbage (Brassica oleracea Linn)

2014 ◽  
Vol 16 ◽  
pp. 164-178
Author(s):  
Adeola Foluke Odewole ◽  
Timothy Abiodun Adebayo
Keyword(s):  
Brassica Oleracea ◽  
Plant Extracts ◽  
Field Experiments ◽  
Insect Pests ◽  
Block Design ◽  
Diamondback Moth ◽  
Field Evaluation ◽  
Significant Difference ◽  
Unsprayed Plot ◽  
Negative Controls

Cabbage (Brassica oleracea Linn.) is one of the important vegetables grown worldwide. Insect pests have been a major constraint to its production with some reported to have developed resistance to commonly available synthetic insecticides. In order to find alternative control for these pests, field experiments were conducted in the early seasons of 2011 and 2012, to evaluate the efficacy of three plant extracts, Tephrosia vogelli Hooks, Zingiber officinales Rosh and Lantana camara Spanish flag, applied at 5, 10 and 25 % w/v concentrations Delthamethrin (a synthethic insecticide) and an unsprayed plot were included as positive and negative controls respectively. Plots were arranged in a Randomized Complete Block Design (RCBD), with three replications. Mean Data over the two planting seasons were subjected to the analysis of variance and significant means were compared using the least significant difference (L.S.D) at P < 0.05. Z. officinales extract effectively control P. xylostella larvae at all concentrations with 25 % w/v gave the best yield of 0.50 kg/ha while T. vogelii and L. camara extracts were as effective as Deltamethrin at different concentrations and hours on diamondback-moth (P. xylostella) adult The present findings indicated that effective botanicals against Diamondback moth adult and larvae of cabbage can be formulated from extract of T. vogelii, L. camara and Z. officinales at 25 % concentration respectively.

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