ARRANJO POPULACIONAL PARA A VARIEDADE UENF-14 DE MILHO PIPOCA

2017 ◽  
Vol 16 (3) ◽  
pp. 401
Author(s):  
CÁSSIO VITORAZZI ◽  
ANTONIO TEIXEIRA AMARAL JÚNIOR ◽  
LILIAM SILVIA CANDIDO ◽  
ISMAEL LOURENÇO DE JESUS FREITAS ◽  
THIAGO RODRIGUES DA CONCEIÇÃO SILVA
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Rio De Janeiro ◽  
Zea Mays L ◽  
Block Design ◽  
Grain Production ◽  
Maize Population ◽  
The North ◽  
Randomized Complete Block Design ◽  
Janeiro State

 RESUMO - A adequação do arranjo populacional está entre as técnicas que podem maximizar a produtividade da cultura do milho. Daí a importância das pesquisas que buscam estudar o desempenho de cultivares de milho e milhos especiais, a fim de determinar o arranjo de plantas ideal. O objetivo deste trabalho foi avaliar o desempenho da variedade UENF-14, de milho pipoca, cultivada em diferentes arranjos populacionais, na safra e safrinha, para otimizar a recomendação fitotécnica para os produtores rurais do Norte Fluminense. Foram instalados dois experimentos em Campos dos Goytacazes-RJ. Um na safrinha 2011 utilizando a variedade UENF-14 e o híbrido experimental P2 x P9, e o outro na safra 2011-2012, com a variedade UENF-14 e o híbrido comercial IAC-112. O delineamento experimental, nos dois experimentos, foi o de blocos casualizados arranjados em parcelas subsubdivididas, em que as parcelas foram compostas pelos genótipos, as subparcelas constituídas pelos espaçamentos entre linhas de semeadura (0,45, 0,60 e 0,90 m) e as subsubparcelas compostas pelas densidades de plantas (60.000, 75.000 e 90.000 plantas ha-1). A UENF-14 apresentou desempenho superior aos híbridos, demonstrando seu potencial para cultivo na região Norte Fluminense. Houve aumento do rendimento de grãos com a diminuição do espaçamento entre linhas de plantio. Para a variedade UENF-14, a redução do espaçamento entre linhas de plantio foi vantajosa para a produção de grãos, independentemente da época de semeadura.Palavras-chave: Zea mays L., densidade de semeadura, espaçamento entre linhas, épocas de semeadura.  POPULATION ARRANGEMENT FOR THE VARIETY OF POPCORN UENF-14 ABSTRACT - The adequacy of the maize population arrangement is among the most important techniques for obtaining higher yields. Therefore, many researchers have been conducting an attempt to study the performance of corn and specialty corn. The objective was to evaluate the performance of the popcorn variety UENF-14 in different population arrangements, in the harvest season and off-season. Two experiments were carried out in Campos dos Goytacazes, North of Rio de Janeiro State, Brazil, in the off-season 2011, using the UENF-14 variety and the experimental hybrid P2 x P9, and in the season 2011-2012 using UENF-14 and the commercial hybrid IAC-112. The treatments were arranged in randomized complete block design with split plots, in which plots were composed by popcorn genotypes, the subplots consisting of three spacings between sowing lines (0.45, 0.60 and 0.90 m) and the subsubplots composed of three plants per hectare densities (60,000, 75,000 and 90,000 plants.ha-1). The variety UENF-14 presented higher performance than the hybrids, demonstrating its potential for recommendation to the North of Rio de Janeiro State. There was an increase of grain yield by reducing the spacing between the plants rows. The cultivation of the variety UENF-14 reducing the spacing between rows was advantageous for grain production, regardless of planting date.Keywords: Zea mays L., densities of plants, spacing between rows, sowing times.

scholarly journals Yield Stability Analysis of Maize (Zea mays L.) Hybrids Using Parametric and AMMI Methods

Scientifica ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Seyed Habib Shojaei ◽  
Khodadad Mostafavi ◽  
Ali Omrani ◽  
Saeed Omrani ◽  
Seyed Mohammad Nasir Mousavi ◽  
...  
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Zea Mays L ◽  
Block Design ◽  
High Yield ◽  
Stability Parameters ◽  
Maize Hybrids ◽  
Randomized Complete Block Design ◽  
Ammi Analysis ◽  
The Stability

The present study investigated the stability and adaptability of maize (Zea mays L.) hybrids. In this study, 12 maize hybrids were planted and examined considering the grain yield. The experiment was arranged in a randomized complete block design (RCBD) with three replications in four research stations in Iran during two crop years. The combined analysis of variance showed that genotype-environment interactions were significant at one percent probability level. The grain yield can stabilize, and hybrids with specific adaptability are recommended to each environment. Hybrids with specific adaptability can be recommended to all types of the environment. Means comparison yield of the genotypes identified DC370 as a high-yield genotype. Regarding AMMI analysis, genotype × environment interactions (GEIs) and two first components were found significant. The SC647 genotype was identified as the most stable genotype. Regarding the stability parameters, SC647 and KSC705 genotypes were selected as the most stable genotypes. From AMMI1 and AMMI2 graphs, the SC647 genotype was identified as the most stable genotype compared with other hybrids.

scholarly journals DEMANDA DE NUTRIENTES PELO MILHO SAFRINHA EM FUNÇÃO DA ÉPOCA DE SEMEADURA E ADUBAÇÃO

2017 ◽  
Vol 16 (3) ◽  
pp. 481
Author(s):  
EDUARDO DE PAULA SIMAO ◽  
ÁLVARO VILELA RESENDE ◽  
MIGUEL MARQUES GONTIJO NETO ◽  
EMERSON BORGHI ◽  
DENIZE CARVALHO MARTINS ◽  
...  
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Zea Mays L ◽  
Block Design ◽  
Sowing Date ◽  
Climatic Conditions ◽  
Sowing Time ◽  
Central Brazil ◽  
Randomized Complete Block Design ◽  
Npk Fertilization

RESUMO - No Brasil Central, a produtividade e a demanda nutricional do milho em sucessão à soja cultivada no verão são dependentes das condições climáticas ao longo do ciclo. Sendo assim, objetivou-se com esse trabalho quantificar a extração e exportação de nutrientes pelo milho, em função da época de semeadura e da adubação fornecida na safrinha de 2014, em Rio Verde-GO. Em cada época de semeadura (29/01/2014 e 25/02/2014) foi conduzido um experimento em delineamento de blocos casualizados, com quatro repetições, num esquema fatorial 4x2, sendo quatro adubações de semeadura (00-00-00, 00-50-50, 25-50-50 e 50-50-50 kg ha-1 de N-P2O5-K2O), com ou sem adubação nitrogenada em cobertura (0 ou 50 kg ha-1 de N). Ao final do ciclo, foram avaliados o rendimento de grãos e o acúmulo de nutrientes nos componentes da parte aérea. Foram determinadas a extração e a exportação de nutrientes. O desenvolvimento e a extração de nutrientes pelo milho safrinha são influenciados pela época de cultivo, assim como pela adubação nitrogenada em cobertura, sem, contudo, ser afetados pela adubação NPK realizada na semeadura. Há maior produção de biomassa seca e produtividade de grãos com a semeadura em janeiro em comparação a fevereiro. O cultivo na primeira época e o nitrogênio em cobertura resultam em maior extração da maioria dos nutrientes, sem necessariamente implicar maiores taxas de exportação com a colheita dos grãos. Em média, a exportação por tonelada de grãos produzida foi de 14,2; 1,5; 2,8; 0,07; 0,7 e 1,0 kg de N, P, K, Ca, Mg e S; e de 2; 12; 4 e 16 g de Cu, Fe, Mn e Zn, respectivamente. Esses valores implicam doses relativamente baixas de fertilizantes na adubação de manutenção para repor a exportação na colheita do milho safrinha.Palavras-chave: sucessão de culturas, extração, exportação, requerimentos nutricionais, Zea mays L.  OFF-SEASON CORN NUTRIENT DEMAND ACCORDING TO THE SOWING DATE AND FERTILIZATION  ABSTRACT - In Central Brazil, productivity and nutritional demand of corn in succession to soybeans grown in summer are dependent on climatic conditions throughout the cycle. Therefore, the objective of this work was to quantify the extraction and exportation of nutrients by off-season corn, according to the sowing date and fertilization in Rio Verde, State of –Goiás, Brazil. In each sowing time (01/29/2014 and 02/25/2014), a randomized complete block design experiment was carried out, with four replications, in a 4x2 factorial scheme, with four sowing fertilizations (00- 00-00, 00 -50-50, 25-50-50 and 50-50-50 kg ha-1 of N-P2O5-K2O), with or without nitrogen fertilization (0 or 50 kg ha-1 N). At the end of the cycle, grain yield and nutrient accumulation in shoot components were evaluated. The extraction and export of nutrients were determined. The growing season and the sidedress nitrogen influence the development and extraction of nutrients by the off-season corn, without, however, being affected by the NPK fertilization at sowing. There is higher production of dry biomass and grain yield with sowing in January compared to February. First-season cultivation and sidedress nitrogen result in greater extraction of most nutrients, without necessarily implying higher export rates with grain harvest. On average, the export per ton of grain produced was 14.2, 1.5, 2.8, 0.07, 0.7, and 1.0 kg for N, P, K, Ca, Mg and S; and 2, 12, 4, and 16 g for Cu, Fe, Mn and Zn, respectively. These values result in relatively low amounts of fertilizers in the maintenance fertilization to replace the nutrients exported by the grain harvest.Keywords: succession crops, extraction, export, nutrient requirements, Zea mays L.

scholarly journals MODIFIED MASS SELECTION WITHIN CORN SYNTHETIC VARIETY

2016 ◽  
Vol 47 (1) ◽  
Author(s):  
F.Y. Baktash
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Yield Components ◽  
Zea Mays L ◽  
Block Design ◽  
Mass Selection ◽  
Selection Intensity ◽  
Original Population ◽  
Randomized Complete Block Design ◽  
Synthetic Varieties

This research  was undertaken to evaluate five cycles of modified mass selection to improve grain yield in synthetic corn (Zea mays L.) variety IPA-5018. The selection was carried out in spring and fall seasons, during, 2013-2015 using 10% selection intensity. The five  populations obtained after selection and the original population were evaluated. The experimental design was a randomized complete block design with five replications. The results were revealed a significant differences among selection cycles in grain yield and some yield components.  The cycle five produced highest grain yield (9699.30 kg.ha-1) and increased 34.88% to the original population. The regression of grain yield, number of grains.ear-1 and grain weight to selection cycles were significantly linear and R2 more than 80%. We  concluded that the  modified mass selection  could be used successfully in improving the grain yield and some yield components of  corn synthetic varieties.

scholarly journals Effect of weed control on weeds, grain yield and its components of maize (Zea mays L)

2020 ◽  
Vol 1 (1) ◽  
pp. 22-26
Author(s):  
Ola El-Badry ◽  
◽  
El-Sayed Gheith ◽  
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Weed Control ◽  
Dry Matter ◽  
Zea Mays L ◽  
Unit Area ◽  
Block Design ◽  
Research Station ◽  
Dry Matter Accumulation ◽  
Randomized Complete Block Design

The present study entitled “effect of weed control on weeds, grain yield and its components of maize (Zea mays L.) cv. Single cross-10 was carried out at the Agricultural and Experiments Research Station at Giza, Faculty of Agriculture, Cairo University, Egypt. The experiment was conducted in the summer 2017 and was repeated in 2018 on the same piece of land to conform previous findings. The experiment design was Randomized Complete Block design (RCBD) having three replications. Six treatments include atrazine (1.0 kg/ha), glyphosate (0.8 kg/ha). atrazine + glyphosate, one hand hoeing after three weeks, hand hoeing twice after three and five weeks from sowing and weedy chick as control were used. Results indicated that glyphosate was found superior to atrazine for all studied characters. Moreover, lower weed dry matter accumulation and higher weed control % as well as higher values of ear characters ( ear length, ear diameter, grain weight/ear and shilling %) and grain yield per unit area were recorded in tank mix application of atrazine + glyphosate followed by hand hoeing twice.

scholarly journals Nuevos híbridos de maíz (Zea mays L.) para el bajio y trópico seco mexicano: líneas recobradas por selección gamética.

2016 ◽  
Vol 7 (1) ◽  
pp. 53
Author(s):  
Cristina Vega ◽  
Gustavo Burciaga ◽  
Jesús Arreola ◽  
Enrique Navarro ◽  
José L. Gutiérrez
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Combining Ability ◽  
Zea Mays L ◽  
Agronomic Traits ◽  
Block Design ◽  
Randomized Complete Block Design ◽  
Agronomic Quality ◽  
Gamete Selection

The aim of this study was to improve the agronomic quality of the tropical lines AN1 and AN2 which have good combining ability; besides their germoplasm is part of a large number of commercial hybrids generated by the Instituto Mexicano del Maíz “Dr. Mario E. Castro Gil”. Eto Blancoand Blanco Dentado 2 were used as a source of gametes and crossed with AN1 and AN2, respectively. This study included recovered lines with different level of inbreeding, five dwarf single crosses and the original lines AN1 and AN2 which were used as testers. A randomized complete block design was used with two replications in each of the three locations during 1989-1990. The objectives were: 1. to select recovered lines on the bases of their combining ability and agronomic traits to generate new hybrids. 2. To determine the effectiveness of the diverse testers. The results showed that gamete selection was efficient in improving AN1 and AN2 lines for most of the traits evaluated such as grain yield, percent of fussarium on ears, except for percent of husk coverage. That recovered lines of AN1 were superior to those of AN2 lines for grain yield. A total of fifteen lines of AN1 and 7 lines of AN2 were identified using gamete selection.

scholarly journals Short communication: Heterosis and combining ability of Nepalese yellow maize (Zea mays L.)

2013 ◽  
Vol 3 ◽  
pp. 172-180 ◽  
Author(s):  
SR Gautam ◽  
BR Ojha ◽  
SK Ghimire ◽  
DB Gurung
Keyword(s):  
Grain Yield ◽  
Combining Ability ◽  
Quantitative Traits ◽  
Short Communication ◽  
Zea Mays L ◽  
Block Design ◽  
Winter Season ◽  
Inbred Lines ◽  
High Magnitude ◽  
Randomized Complete Block Design

Nepalese yellow maize inbred lines were characterized for general combining ability (GCA) and specific combining ability (SCA) of their crosses and parents were identified having high combining ability for determining the heterotic effects on yield and other quantitative traits of hybrids. A line x tester mating design was used for making the crosses in the winter season of 2008 and the hybrids along with their parents and four checks were evaluated in Randomized Complete Block Design (RCBD) with three replications in the spring season of 2009 at the experimental farm of the National Maize Research Program, Chitwan. Significant variations were found among the treatments for grain yield and other traits which indicated presence of high magnitude of genetic variations among tested inbred lines. The cross between RML-32 and RML-17 produced the highest grain yield (15870 kg/ha) among the crosses. Hybrids such as RL-194 x RL-84 (10770 kg/ha), RML-21 x RML-17 (9270 kg/ha), RL-180 x RML-17 (9270 kg/ha) and L-1 x RL-84 (8785 kg/ha) were found superior grain yielder. Thirty-nine hybrids showed positive mid-parent heterosis for grain yield among 40 crosses. The highest positive mid-parent heterosis for grain yield was found 880% in cross between RML-32 and RML-17, followed by RL-98X RML-17 (507%), RL-103 x RML-17 (403%), PUTU-18 x RML- 17 (351%) and RL-180 x RL 84 (316%). Agronomy Journal of Nepal (Agron JN) Vol. 3. 2013, Page 172-180 DOI: http://dx.doi.org/10.3126/ajn.v3i0.9020

scholarly journals Evaluation of nitrogen (Urea) on Zea mays L. under Balkh province climate

2020 ◽  
Vol 3 (1) ◽  
pp. 6-9
Author(s):  
Nasratullah Habibi ◽  
Friba Sikandari
Keyword(s):  
Zea Mays ◽  
Nitrogen Fertilizer ◽  
Yield Components ◽  
Zea Mays L ◽  
Agricultural Research ◽  
Block Design ◽  
High Yield ◽  
Randomized Complete Block Design ◽  
Yield And Yield Components ◽  
Effect On Yield

An experiment was conducted to evaluate effect of urea fertilizer on yield and yield components of Zea mays L. Using Randomized Complete Block Design (RCBD) split plots in three replications in agricultural research farm of Balkh University by 2019. Doses of urea used in this experiment were 0, 80, 160 and 240 kg ha-1 , respectively. It has been found that amount of nitrogen fertilizer (urea) had significant effect on yield of maize at p<0.05. The higher level of nitrogen caused the higher grain yield, number of kernels per ear, the number of grains per ear row, ear diameter, cob length, grain per plant and plant height. As a result 7.76 ton ha-1 was recorded as high yield while 240 kg ha-1 urea was used, and 5.12 ton ha-1 was recorded as low yield in treatment one with 0 kg ha-1 of nitrogen fertilizer. Finally, as a result using 240 kg ha-1 nitrogen fertilizer is recommended.

scholarly journals Study of Combining Ability and Nature of Gene Action for Yield and Yield Related Traits in Maize (Zea mays L.)

2019 ◽  
pp. 1-8
Author(s):  
Birender Singh ◽  
Abhinav Abhishek ◽  
R. B. P. Nirala ◽  
S. S. Mandal ◽  
Tushar Ranjan
Keyword(s):  
Grain Yield ◽  
Zea Mays L ◽  
Gene Action ◽  
Block Design ◽  
Diallel Mating Design ◽  
Randomized Complete Block Design ◽  
Additive Gene ◽  
Ear Height ◽  
The Mean ◽  
Half Diallel

The present investigation was carried out using thirty eight genotypes (eight parents, twenty eight F1's and two checks) using Griffing's half diallel mating design. The experiment was laid out in a randomized complete block design with three replications during kharif 2017 at the research farm of Bihar Agriculture College, Sabour. Observations were recorded for six pre-harvest characters viz days to 50% anthesis, days to 50% silking, anthesis silking interval, days to 75% brown husk, plant height, ear height and seven post-harvest characters viz cob length, cob diameter, number of kernel rows per cob, number of kernels per row, 1000 seed weight, shelling percentage and grain yield at 15% moisture. The mean sum of square of treatments was found to be significant for days to 75% brown husk and shelling per cent and highly significant for all other characters. The mean sum of square for GCA was found to be significant for cob length, no. of kernel row per cob, no. of kernels per row and highly significant for remaining all the characters except days to 75% brown husk and shelling%. The mean sum of square for SCA was significant for days to 75% brown husk and highly significant for all the remaining characters. On the basis of GCA effect for grain yield at 15% moisture, the parents BML-7, VQL-1 and SML-1 were found to be good general combiners. The ratio of GCA variance to SCA variance was found to be less than 1 for all the traits which indicated the preponderance of non-additive gene action. On the basis of SCA effects better performing crosses for grain yield at 15% moisture were DTPYC-9 × LM-13, CLQRCY-44 × VQL-1, CML-161 × SML-1 and CML-161× BML-7.

scholarly journals Comparative Effect of Or ganics and Biofertilizers on Growth and Yield of Maize (Zea mays. L)

2014 ◽  
Vol 2 (1) ◽  
pp. 55-62 ◽  
Author(s):  
S Umesha ◽  
M Divya ◽  
K Prasanna ◽  
R Lakshmipathi ◽  
K Sreeramulu
Keyword(s):  
Zea Mays ◽  
Field Experiment ◽  
Grain Yield ◽  
Zea Mays L ◽  
Block Design ◽  
Nutrient Content ◽  
Growth And Yield ◽  
Comparative Efficiency ◽  
Matter Production ◽  
Crop Harvest

A field experiment to study the “Comparative efficiency of organics and biofertilizers on growth and yield of maize (Zea mays L.)” was conducted during Kharif 2011 at farmer field in Beluguli village, Chikkanayakanahalli taluk (Tumkur district). The maize cultivar Nithyashree (NAH 2049) was used in the study. The field experiment was laid out in Randomized Complete Block Design with fourteen treatments and three replications. Results of the treatment (T13) having recommended dose of NPK + Azotobacter chroococcum + Bacillus megaterium + Pseudomonas fluorescence + enriched compost has showed highest plant height at 30, 60, 90 days after sowing and at harvest (120 days) (31.70, 180.93, 186.07 and 188.13 cm respectively). The highest total dry matter production at harvest (375.80 g) and yield parameters like Weight of cob (207.63 g), Grain yield per plant (158.93 g), Grain yield per ha (54.53 q) and Test weight of seeds (33.10 g) was also found highest in this treatment and available nutrient content in soil after crop harvest i.e., nitrogen (185.40 Kg ha-1), phosphorous (38.83 Kg ha-1) and potassium (181.47 Kg ha-1) was also found highest in the same treatment combination.

scholarly journals Potential of the ESA23B maize population for protein and oil content improvement

2003 ◽  
Vol 60 (2) ◽  
pp. 319-327 ◽  
Author(s):  
Andréa Mittelmann ◽  
José Branco de Miranda Filho ◽  
Gustavo Júlio Mello Monteiro de Lima ◽  
Claudete Hara-Klein ◽  
Ricardo Takao Tanaka
Keyword(s):  
Grain Yield ◽  
Protein Content ◽  
Oil Content ◽  
Zea Mays L ◽  
Block Design ◽  
Yield Data ◽  
Additive Variance ◽  
Maize Population ◽  
Randomized Block Design ◽  
Selection Of

Among the traits that may add commercial value to maize (Zea mays L.), those related to nutritional quality, specially protein and oil content, are of great interest to the feed industry. The objective of this work was studying the variability of protein and oil content, as well as yield, in a group of maize testcrosses. One hundred and twenty S1 families of the ESA23B maize population were crossed with two testers, an open-pollinated population (BR108) and an exotic line (CML269). Testcrosses were evaluated at two locations under a completely randomized block design with three replications. Ear and grain yield, protein and oil content were evaluated. The three-way interaction location x tester x progeny was significant for all traits, except for oil content. Differences among progenies were detected for all traits. Testcross means varied from 8.40% to 11.82% for protein content and from 3.77% to 5.10% for oil content. Hybrids with similar or superior means to the best check were identified for protein content, ear yield, and grain yield. Estimates of the interpopulation additive variance ranged from 0.553 to 1.124 for protein content; 0.034 to 0.057 for oil content (percent data); 132.13 to 521.74 for ear yield and 116.33 to 381.73 for grain yield (data in grams per plant). The population ESA23B can potentially be improved for all the traits studied. Associations among traits were weak, thus concomitant selection of quality and yield can be feasible.

Sign in / Sign up

Export Citation Format

Share Document