Biochemical response of inbred and hybrid corn (Zea mays L.) to R-25788 and its distribution with EPTC in corn seedlings

1985 ◽  
Vol 23 (1) ◽  
pp. 131-140 ◽  
Author(s):  
Ming-muh Lay ◽  
Ann M. Niland
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Biochemical Response ◽  
Hybrid Corn

scholarly journals Fertilización Con Potasio Y Fosfitos, Sobre El Rendimiento De Maíz Duro (Zea Mays) En La Zona Subcentral Litoral

2018 ◽  
Vol 14 (15) ◽  
pp. 46
Author(s):  
Álvaro Lamilla Arana ◽  
Eduardo Colina Navarrete ◽  
Carlos Castro Arteaga ◽  
Danilo Santana Aragone ◽  
Guillermo García Vásquez ◽  
...  
Keyword(s):  
Zea Mays ◽  
Experimental Design ◽  
Grain Yield ◽  
Plant Height ◽  
Zea Mays L ◽  
Potassium Sulfate ◽  
Hybrid Corn ◽  
Calcium Magnesium ◽  
San Juan County ◽  
Muriate Of Potash

The investigation evaluated the effect of fertilizers potásicos with fosfitos on the yield of grain of hard corn (Zea mays L.), in the Property "Santiago", located in the Km 26 way Babahoyo-San Juan, county of Los Ríos. A rehearsal settled down in the hybrid corn DK-7088, measuring the answer from the corn to the application of fertilizers potasic and fhosphite, to determine the dose with more effect on the production. 19 treatments were proven with Chloride of potassium, Sulfate of potassium and Nitrate of potassium, with fhosphite of Calcium, Magnesium and Potassium, more a witness without applications. The used experimental design was complete Blocks at random in three repetitions, the evaluated variables were subjected to the variancia analysis, and the test was applied from Tukey to 95% of probability. The evaluated parameters were: plant height, days to flowering, longitude and ear diameter and yield for hectare. Found increases in grain yield with three treatments, highlighting the treatment with the application of muriate of potash in conjunction with Calcium phosphide (9451,65 kg ha1 ). The results indicate the possibility of increases of more than 49% in relation to the witness (6339 kg ha1 ) where there was applied the treatments.

Morpho-physiological and biochemical response of maize (Zea mays L.) plants fertilized with nano-iron (Fe3O4) micronutrient

2017 ◽  
Vol 40 (14) ◽  
pp. 1969-1977 ◽  
Author(s):  
Rajamanickam Elanchezhian ◽  
Dameshwar Kumar ◽  
Kulasekaran Ramesh ◽  
Ashish Kumar Biswas ◽  
Arti Guhey ◽  
...  
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Biochemical Response ◽  
Physiological And Biochemical

RECENT ADVANCES IN MATURITY AND YIELD OF GRAIN CORN HYBRIDS TESTED IN THE MARITIMES

1989 ◽  
Vol 69 (4) ◽  
pp. 1259-1263
Author(s):  
R. P. WHITE ◽  
K. B. McRAE
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Considerable Improvement ◽  
Yield Potential ◽  
Average Yield ◽  
Maritime Provinces ◽  
Corn Hybrids ◽  
Yield Improvement ◽  
Hybrid Corn ◽  
Harvest Maturity

Hybrids evaluated in six regional grain corn (Zea mays L.) trials in the Maritime Provinces of Canada showed considerable improvement in at-harvest grain maturity and some yield improvement between 1981 and 1987. After adjusting for changes in at-harvest maturity between 1981 and 1987, the average yield potential had increased by 4.4% (SE = 1.96). The improvement in at-harvest maturity was on average 3.7% (SE = 0.82), after adjusting for changes in yield, but was greater for hybrids with less than average yield.Key words: Zea mays L., hybrid corn, maturity, yield, hybrid evaluation

scholarly journals Yield of hybrid corn (Zea mays L.) AG 1051 under different plant populations under drip irrigation in Agreste Alagoano

2020 ◽  
Vol 12 (1) ◽  
pp. 1-9
Author(s):  
Rafael Lima Vieira dos SANTOS ◽  
João Pedro Ferreira BARBOSA ◽  
Willian Cleisson Lopes de SOUZA ◽  
Luiz Eduardo Bezerra SILVA ◽  
Dacio Rocha BRITO ◽  
...  
Keyword(s):  
Zea Mays ◽  
Drip Irrigation ◽  
Zea Mays L ◽  
Plant Populations ◽  
Hybrid Corn

- O milho é um dos principais cereais atualmente cultivados em todo o mundo, servindo para a alimentação humana, alimentação animal e matérias-primas para a indústria, destacando-se por suas qualidades nutricionais. Convém ressaltar que a água interfere basicamente em todas as fases do desenvolvimento dessa planta, e por isso, é crescente o investimento dos produtores rurais em sistemas de irrigação, sobretudo em regiões áridas e semiáridas. Assim, objetivou-se com esta pesquisa, avaliar o rendimento do milho (híbrido AG 1051) em função de diferentes espaçamentos a fim de maximizar sua produtividade no período de estiagem sob condições de plantio em irrigação deficitária. A pesquisa foi realizada no Polo Tecnológico Agroalimentar – Arapiraca e os testes foram em uma área experimental, tendo cada parcela 4 linhas, espaçadas entre si por 80cm e cada linha com 5m de comprimento. Foram utilizados três diferentes espaçamentos entre plantas: 10cm, 20cm e 30cm. A irrigação foi deficitária, cuja lâmina diária de água foi 2,5 mm/dia. As variáveis avaliadas foram: peso da biomassa total, das folhas, dos caules, das espigas e das inflorescências masculinas. O delineamento experimental foi em blocos ao acaso com quatro repetições e os dados submetidos à análise estatística pelo software SISVAR e os resultados plotados em gráficos através do software Origin. Por fim, obteve-se rendimento satisfatório e considerável para uma região onde comumente ocorre perda de safra devido à estiagem, pois mesmo a cultura requisitando uma certa quantidade de água na irrigação, foi possível obter resultados eficientes utilizando um sistema de irrigação deficitário.

scholarly journals Moments and number of defoliated leaves and hybrid corn productivity

2019 ◽  
Vol 1 (1) ◽  
Author(s):  
J. Ramirez ◽  
A. Soto ◽  
C. E. Durán ◽  
D. B. Luis
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Zea Mays L ◽  
Statistical Test ◽  
Grain Weight ◽  
Hybrid Corn ◽  
Split Plot ◽  
Corn Productivity ◽  
Hybrid Cultivar

AbstractObjectives: To determine the effect of the time and the number of lower leaves defoliated, on the productivity of hybrid corn (Zea mays L.). Methodology: Randomized complete blocks design was used, with arrangement of split plot and four replications, using the hybrid cultivar DK 7088. The plots corresponded to the defoliation times: 0, 14 and 28 days after pollination (DAP) and the subplots, number of defoliated leaves (DL): zero, two,four and six. The leaves were defoliated just below the ear, from top to the bottom. The total number of treatments was 12. Scott-Knott statistical test with a level of 5 % was used for the comparison of means. The traits studied were grain weight per ear, ear weight and grain yield per hectare. Results: The interaction between defoliation time and number of lower defoliated leaves was significant (P < 0.05) for grain weight per ear, ear weight andgrain yield. The defoliation of two, four and six leaves during pollination reduced the grain weight per ear, weight per cob and grain yield, being significantly lower than the no defoliated plants. At 14 and 28 days after pollination, defoliation did not affect significantly (P > 0.05) grain yield, but grain weight per ear and ear weight decreased (P< 0.05). Conclusions: The defoliation of lower leaves made during the pollination, reduces the grain weight per ear, ear weight and grain yield, while defoliation 14 days after pollination did not affect significantly the grain yield per hectare.Keywords: Zea mays, defoliation, leaves, grain yield

scholarly journals Effect of Artificial Detasseling and Defoliation on Maize Seed Production

2019 ◽  
pp. 1-9 ◽  
Author(s):  
Marcio Paulo Czepak ◽  
Marcio Kliemann ◽  
Omar Schmildt ◽  
Rubens Neres Araujo ◽  
Vinicius de Souza Oliveira ◽  
...  
Keyword(s):  
Zea Mays ◽  
Seed Production ◽  
Zea Mays L ◽  
Block Design ◽  
Maize Seed ◽  
Hybrid Corn ◽  
Central Lines ◽  
Randomized Complete Block Design ◽  
Set Up

The objective of this work was to evaluate the effect of artificial detasseling and defoliation on the production of Pioneer 30F90 simple hybrid corn (Zea mays L.) seeds. The experiment was set up in a randomized complete block design, consisting of seven treatments (Control; detasseling; detasseling + defoliation of the top leaf; detasseling + defoliation of the two upper leaves; detasseling + defoliation of the three upper leaves; detasseling + defoliation of the upper four leaves; detasseling + defoliation of the upper five leaves), with 4 replicates. The plots were composed of 6 spaced rows of 0.90 cm by 6.00 m in length. At the time of the issue of 50% of the tassel were carried out the treatments. For the evaluations the two central lines of each plot were collected, eliminating 1.00 m from each end, totaling a useful area of 7.2 m². At harvest, the crop presented a final stand of 5 plants m² (50000 ha-1). According to the results obtained, it was concluded that the detasseling positively influenced the production components, due to the decrease of the auto-shading. The higher the level of defoliation, the lower the active photosynthetic area of the plant, and consequently the lower the productivity. The most affected production components in defoliation are grain numbers in the row, grain numbers in the ear and weight of 1000 grains. detasseling and defoliation do not interfere with the germination of corn seeds.

RESPONSE OF CORN TO NITROGEN, PHOSPHORUS, AND POTASSIUM

1972 ◽  
Vol 52 (1) ◽  
pp. 27-42 ◽  
Author(s):  
R. F. BISHOP ◽  
G. G. SMELTZER ◽  
C. R. MACEACHERN
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Nutrient Supply ◽  
Soil Series ◽  
Hybrid Corn ◽  
Phosphorus And Potassium ◽  
Leaf Composition ◽  
Leaf P ◽  
Nitrogen Phosphorus ◽  
Leaf N

Fertilizer trials with hybrid corn (Zea mays L.) were conducted on six soil series at a total of 14 locations during a 6-year period. Treatments consisted of various rates of N, P, and K applied in all possible combinations. The effect of N on both leaf composition and yield was predominately linear and was much greater than the effect of either P or K. Applied N had an effect on leaf N at 10 locations, applied P on leaf P at five, and applied K on leaf K at six. In the case of yield, there was an effect from N at 10 locations, P at four, and K at one. The results indicate that factors other than nutrient supply also affected yield and that N, P, and K at 100–150, 30–45, and 30–40 kg/ha, respectively, were generally adequate.

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