scholarly journals Endemic and invasive Coccinellidae associated with maize (Zea mays L.) fields, in Manabi province, Ecuador

2021 ◽  
Vol 49 (1) ◽  
pp. 35-41
Author(s):  
Alvaro Gregorio Bailon ◽  
Fernando Leonel Mendoza ◽  
Leonardo Solis ◽  
José Velasquez ◽  
Karime Montes ◽  
...  
Keyword(s):  
Zea Mays ◽  
Pest Management ◽  
Zea Mays L ◽  
Hippodamia Convergens ◽  
Phenological Stages ◽  
Santa Ana ◽  
Pests And Diseases ◽  
Maize Plants ◽  
First Time

Abstract Maize (Zea mays L.), which is considered an important cereal everywhere, is widely cultivated in different agroecological conditions. Throughout their phenological stages, maize crops are attacked by pests and diseases, and in Ecuador these phytosanitary problems are usually counteracted with applications of pesticides. However, knowledge of beneficial entomofauna is fundamental to guide pest management programs. As part of this objective, the Coccinellidae species present in maize fields in localities (Santa Ana, Colon, and Danzarin) in Manabí province were identified. In each zone, maize plants were sampled from 2018–2019. A total of 2,654 specimens belonging to 14 taxa were collected in this study, of which Cheilomenes sexmaculata, Cycloneda sanguinea, Hippodamia convergens, Hyperaspis arida, and Psyllobora confluens were found in all the studied areas. Hyperaspis arida and Diomus apollonia are reported for the first time in Ecuador.

scholarly journals Gluconacetobacter diazotrophicus Pal5 Enhances Plant Robustness Status under the Combination of Moderate Drought and Low Nitrogen Stress in Zea mays L.

2021 ◽  
Vol 9 (4) ◽  
pp. 870
Author(s):  
Muhammad Aammar Tufail ◽  
María Touceda-González ◽  
Ilaria Pertot ◽  
Ralf-Udo Ehlers
Keyword(s):  
Zea Mays ◽  
Plant Growth ◽  
Zea Mays L ◽  
Growth Promotion ◽  
Nitrogen Stress ◽  
Rrna Gene ◽  
N Fixation ◽  
Gluconacetobacter Diazotrophicus ◽  
Maize Plants ◽  
Low Nitrogen

Plant growth promoting endophytic bacteria, which can fix nitrogen, plays a vital role in plant growth promotion. Previous authors have evaluated the effect of Gluconacetobacter diazotrophicus Pal5 inoculation on plants subjected to different sources of abiotic stress on an individual basis. The present study aimed to appraise the effect of G. diazotrophicus inoculation on the amelioration of the individual and combined effects of drought and nitrogen stress in maize plants (Zea mays L.). A pot experiment was conducted whereby treatments consisted of maize plants cultivated under drought stress, in soil with a low nitrogen concentration and these two stress sources combined, with and without G. diazotrophicus seed inoculation. The inoculated plants showed increased plant biomass, chlorophyll content, plant nitrogen uptake, and water use efficiency. A general increase in copy numbers of G. diazotrophicus, based on 16S rRNA gene quantification, was detected under combined moderate stress, in addition to an increase in the abundance of genes involved in N fixation (nifH). Endophytic colonization of bacteria was negatively affected by severe stress treatments. Overall, G. diazotrophicus Pal5 can be considered as an effective tool to increase maize crop production under drought conditions with low application of nitrogen fertilizer.

scholarly journals Identification of DNA of pathogens from Fusarium genus in maize plants (Zea mays L.)

2020 ◽  
Author(s):  
Lidia Tumanova ◽  
◽  
Cristina Grajdieru ◽  
Valentin Mitin ◽  
◽  
...  
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Maize Plants

scholarly journals Occurrence of the parasitoid Anastatus sp. in eggs of Leptoglossus zonatus under the maize in Brazil

2003 ◽  
Vol 33 (4) ◽  
pp. 767-768 ◽  
Author(s):  
Carlos Henrique Marchiori
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Percent Parasitism ◽  
First Time

The objective of this study was to report, for the first time in Brazil, the occurrence of the parasitoid Anastatus sp. (Hymenoptera: Eupelmidae) in eggs of Leptoglossus zonatus (Hemiptera: Coreidae) on maize (Zea mays L.) in Itumbiara County, State of Goias, Brazil (18°25'S; 49°13'W). Percent parasitism was 6.9%.

Effects of municipal solid waste compost and mineral fertilizer amendments on soil properties and heavy metals distribution in maize plants (Zea mays L.)

Chemosphere ◽  
2011 ◽  
Vol 85 (10) ◽  
pp. 1614-1623 ◽  
Author(s):  
Gregoria Carbonell ◽  
Rosario Miralles de Imperial ◽  
Manuel Torrijos ◽  
Mar Delgado ◽  
José Antonio Rodriguez
Keyword(s):  
Heavy Metals ◽  
Zea Mays ◽  
Municipal Solid Waste ◽  
Soil Properties ◽  
Solid Waste ◽  
Zea Mays L ◽  
Mineral Fertilizer ◽  
Municipal Solid Waste Compost ◽  
Maize Plants

Morphological Observations on Recently Recovered Early Agricultural Period Maize Cob Fragments from Southern Arizona

2005 ◽  
Vol 70 (2) ◽  
pp. 361-375 ◽  
Author(s):  
Michael W. Diehl
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Yield Potential ◽  
Maize Cultivars ◽  
Maize Plants ◽  
Tucson Basin ◽  
Maize Cob ◽  
Early Agricultural Period

Metric analyses of recently excavated maize (Zea mays, L.) cupules and cob fragments from Early Agricultural period (2000 B. C.-A.D. 50) sites in southern Arizona indicate that early maize cultivars produced small cobs with small cupules. Although it is risky to generalize about the yield potential of a plant that may have no compelling modern analogues, this work provides further support for the claim that ancient Tucson Basin maize plants provided relatively low yields as compared with more recent varieties.

scholarly journals INVENTARISASI DAN IDENTIFIKASI HAMA DAN PENYAKIT UTAMA TANAMAN JAGUNG (Zea mays L.)

AGRICA ◽  
2020 ◽  
Vol 4 (2) ◽  
pp. 155-165
Author(s):  
Emanuel Randy Dhena ◽  
Yustina Maria Silvia Wonga Puu
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Main Type ◽  
Corn Stalk ◽  
Plant Leaves ◽  
Dominant Type ◽  
Pests And Diseases ◽  
Corn Plants ◽  
Disease Attack ◽  
Insect Attack

This research was carried out in order to understand the main types of pests and diseases that affect corn, which types are most dominant and to understand the severity of these main diseases in corn. Observation of variables involved the identification of pests and diseases that attacked corn plants, the diversity of these pests and diseases as well as the intensity of the damage caused by these pests and diseases. The results of this research showed that the main type of pest and disease that attacks corn are, among others: seedling flies (Atherigonasp), grasshoppers (Oxyasp), corn stalk drillers (Ostrineafurnacalis) and leaf rust.  The most dominant type of pest or disease were grasshoppers (Oxyasp) which attacked plant leaves.  The seriousness of an attack by a pest or disease was found to be important in the seedling phase, there are many variations in between species of corn and also developed with the age of the corn.  At 12 days after planting, the incidence of insect attack was0.2% and at 33 days and 54 days after planting it was 0.32-0.47%. Whereas for disease, when observed at 33 and 54 days after planting, the average incidence of disease attack was 0.05-0.23%.  Also, when observed at 61 days and 75 days, the incidence of attack rose to 0.32-40%.

scholarly journals The Effect of Mineral, Organic and Biofertilizeres on the Growth of Zea mays L.

2018 ◽  
Vol 7 (2) ◽  
pp. 66-77
Author(s):  
Bushra Mahmoud Alwan ◽  
Ahmed Majid Kareem
Keyword(s):  
Zea Mays ◽  
Dry Matter ◽  
Zea Mays L ◽  
Organic Fertilizer ◽  
Organic Fertilizers ◽  
Control Treatment ◽  
Mineral Fertilizers ◽  
Maize Crop ◽  
Maize Plants ◽  
Planting Season

An Implemented pot experiment  has been conducted in Al-Qadisiyah city - sadder AL- Yusufiya - District 9 in Spring planting season 2016 to study the effect of the overlap between the mineral , organic and bio fertilization in some  growth indicators to maize crop (Zea mays) in Silt Loam texture soils with factorial experiement according to completely randomize  design (Complete random design) and with  three replicates. The expenneit has been done by adding  mineral fertilizers (240 kg N. ha-1 and 80 kg P. ha-1 and 120 kg K. ha-1) three levels (0, 50% and 100%) respectively; and two levels of organic fertilizer (0 and 10 Mg. ha-1) respectively; and two levels of bio-fertilizer (0 and 2 ml. L-1) respectively to the irrigation water. The addition of mineral , organic and bio fertilizers has a significant effecct on the dry matter amount  and the treatment (M2O1B1) is given the highest average of  the dry matter,which reaches to 57.27 g.pot-1 as compared with the control treatment (M0O0B0), reacches to 20.46 g.pot-1 and the increasing percentage reach to 179.91%. There are no significant differences between (M1O1B1) and (M2O1B1). The triple overlap among the metal and organic fertilizers and bio has a significant effect on increasing the percentages of N, P and K in maize plants%, the treatment (M2O1B1) has achieved the highest average of 3.67% N and 0.49% P and 2.19% K respectively, compared with the treatment control (M0O0B0) 2.21% N and 0.23% P and 1.33% K sequentially with  increasing which presentage reached  to  66.06 N% and 113.04 P% and 64.66 K%. There are no significant differences between the treatments (M1O1B1) and (M2O1B1).

scholarly journals PENGARUH DOSIS PUPUK UREA DAN PUPUK HAYATI MIKORIZA TERHADAP PERTUMBUHAN TANAMAN JAGUNG (Zea Mays. L)

2021 ◽  
Vol 21 (1) ◽  
pp. 62-68
Author(s):  
Wiyono ◽  
Setya Fikrie Afifuddin ◽  
Setie Harieni ◽  
Daryanti
Keyword(s):  
Zea Mays ◽  
Sea Level ◽  
Soil Type ◽  
Zea Mays L ◽  
Block Design ◽  
Plant Roots ◽  
Inorganic Fertilizers ◽  
Urea Fertilizer ◽  
Randomized Block Design ◽  
Maize Plants

The efficiency of inorganic fertilizers can also be done by using mycorrhizal biofertilizers. Efforts to increase corn growth need to be done by using inorganic fertilizers and biological fertilizers. This study aims to determine the effect of urea and mycorrhizae doses on the growth of maize (Zea mays. L). The research was conducted in Gejugan Village, Andong District, Boyolali Regency, an altitude of 154 m above sea level with grumusol soil type. This study used a completely randomized block design (RAKL) with two treatment factors, namely the first factor urea fertilizer dosage consisting of 4 levels, namely N0 = 0 kg / ha, N1 = 100 kg / ha, N2 = 200 kg / ha, N3 = 300 kg. / ha, and mycorrhizae consists of 3 levels, namely M0 = 0 g / plant, M1 = 5 g / plant, M2 = 10 g / plant. with 3 repetitions. The results of this study indicated that the dose of urea fertilizer affected the growth of maize, while the mycorrhizal dose did not affect the growth of maize except for the length of the plant roots. The effect of urea dose interaction with mycorrhizae only affected the root length growth of maize. The best growth of maize plants after being given a dose of urea as much as 100 kg/da and mycorrhizal biofertilizer 10 g / plant with the longest roots (40.44 cm)

scholarly journals Kajian Macam Bokashi dan Varietas Terhadap Pertumbuhan dan Produksi Tanaman Jagung (Zea mays L.)

2019 ◽  
Vol 2 (2) ◽  
pp. 32-43
Author(s):  
Muhammad Syifa’ ◽  
Ana Amiroh ◽  
Suharso Suharso
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Block Design ◽  
Food Plants ◽  
Good Effect ◽  
Staple Food ◽  
Randomized Block Design ◽  
Maize Plants ◽  
Generative Phase ◽  
Corn Plants

Corn plants (Zea mays L.) are one of the second staple food plants after rice plants in Indonesia. Some people in Indonesia consume corn as a staple food. Given the importance of corn crop commodities, as one of the staple foods. So there needs to be an effort to increase the growth and production of corn plants. One such effort is the application of bokashi and varieties. This research was conducted in Kranji Village, Paciran District, Lamongan Regency. With the altitude of ± 5 meters above sea level. The time of the study was conducted from March to June 2019. This study uses Factorial Randomized Block Design (RBD), which consists of two factors, namely: bokashi and varieties. Each factor consists of 3 levels that are repeated 3 times, namely: the first factor, bokashi consists of 3 levels, namely without bokashi, bokashi cow cage, bokashi chicken coop. The second factor, the variety consisted of 3 levels namely BISI 18, NK7328 SUMO, and BISI 2. Observation of growth and production of maize plants includes vegetative phase (plant height and number of leaves) and generative phase (ear length, ear diameter, weight of peel cob ear off harvest, weight of peel cob off harvest per hectare and weight of 1000 seeds). The results showed the interaction between the treatment of bokashi and varieties on the height of maize plants and the treatment of NK7328 SUMO varieties had a good effect on all parameters of observation.

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