scholarly journals Effect of Herbicides on Yield and Yield Components of Hybrid Maize (Zea mays)

2016 ◽  
Vol 34 (4) ◽  
pp. 729-736 ◽  
Author(s):  
I.A. KHAN ◽  
G. HASSAN ◽  
N. MALIK ◽  
R. KHAN ◽  
H. KHAN ◽  
...  
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Plant Height ◽  
Maximum Yield ◽  
Weed Suppression ◽  
Maize Crop ◽  
Maize Hybrid ◽  
Maize Hybrids ◽  
Biological Yield ◽  
Hybrid Maize

ABSTRACT Maize crop (Zea mays) is facing lots of problems from different pests throughout Asia, including Pakistan. Weed infestation is one of the serious pests that remarkably decrease the grain yield in maize. In Khyber Pakhtunkhwa province of Pakistan, the trend of maize hybrid cultivation is gaining the attention of the farmers due to its higher production. Therefore, in this research we tested herbicides (Stomp 330 E, Dual gold 960 EC, 2,4-D, ester) in maize hybrids (P-3025, P-32T78, P-3203). The experiment was done in RCB design with split plots arrangement, where maize hybrids were kept in main plots, while herbicides were assigned to the subplots. Each treatment was repeated three times at the New Developmental Farm (NDF), at the Peshawar University of Agriculture, Pakistan. Results revealed that both hybrids and herbicides significantly increased plant height, biological yield and grain yield. However, the lowest weed density (142.50 m-2) was observed in Dual Gold 960 EC treated plots. Similarly, plant height (247.188 cm) and grain yield (2.253 ton ha-1) was maximum in maize hybrid P-3025 and Dual gold treated plots. From the instant experiment, it is concluded that the Dual gold 960 EC herbicide is declared as the best herbicide for weed suppression in maize, while maize hybrid P-3025 was the best hybrid giving maximum yield in the study.

scholarly journals Testing of the ultra-early maturing maize hybrids of French breeding for grain production in the Tomsk region

2021 ◽  
Vol 1 (2) ◽  
pp. 27-33
Author(s):  
N. A. Perchenko ◽  
O. N. Sergeeva
Keyword(s):  
Grain Yield ◽  
Vegetation Period ◽  
Maize Hybrid ◽  
Maize Hybrids ◽  
Leaf Formation ◽  
Early Maturing ◽  
Tomsk Region ◽  
Yield Structure ◽  
Biological Yield ◽  
Average Plant

The current paper has presented the testing results of such ultra-early maturing maize hybrids of French breeding with different FAOs, as ‘Zeta 102’ (FAO – 115), ‘Zeta 140 S’ (FAO – 140), ‘Lazuliya’ (FAO – 170) in 2019 and 2020. The phenological study has shown that at the beginning of the vegetation period the maize leaf area of the hybrid ‘Zeta 102’ increased more intensively and reached its maximum value at the heading stage. At the same time, at the period of the 6th leaf formation, the leaf surface of the later maturing hybrid ‘Lazuliya’ (FAO – 170) formed more intensively. In addition, the maize hybrids with a more elongated FAO formed taller plants, the average plant height of the hybrid ‘Lasuliya’ was significantly higher than that of the two hybrids ‘Zeta’. The hybrid ‘Lasuliya’ also showed higher yield structure and grain yield. The hybrid ‘Lasuliya’ was characterized with not only a larger cob weight compared to other hybrids, but also with a significantly larger number of grains per cob, and, accordingly, a higher grain yield. At the same time, the biological yield of the maize hybrid ‘Zeta 102’ (FAO – 115) turned out to be higher, which may indicate a higher foliage of this hybrid, this is also confirmed by the lowest coefficient of economic efficiency. The results of the tests showed that in the Tomsk region it is preferable to grow the maize hybrid ‘Lasuliya’ for grain, and ‘Zeta 102’ for silage. The tests are going to be continued in other districts of the Tomsk region.

scholarly journals Nitrogen Management Studies in Maize (Zea Mays L.) Hybrids

2013 ◽  
Vol 46 (3) ◽  
pp. 39-48 ◽  
Author(s):  
S. Iqbal ◽  
H.Z. Khan ◽  
N. Akbar ◽  
M.S.I. Zamir ◽  
H.M.R. Javeed ◽  
...  
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Seed Oil ◽  
Seed Protein ◽  
Foliar Application ◽  
Nitrogen Management ◽  
Maize Hybrids ◽  
Knee Height ◽  
Single Cross ◽  
Biological Yield

Abstract A field experiment was conducted to study the effect of different nitrogen management methods on yield, yield components and quality attributes of maize hybrids (single cross-6142 and double cross-4444) under irrigated conditions. Nitrogen dose is met either by PM (poultry manure) or urea according to each treatment. PM was incorporated at the time of presowing irrigation whereas fertigation method at knee height stage and foliar spray at flowering were use for the application of urea. Results showed that plant height, cob diameter, number of grains per cob, grain yield and biological yield were significantly affected by the hybrids. Significantly, higher plant height, cob diameter, number of grains per cob, grain yield and biological yield were produced by single cross-6142. There was no significant difference occur between both hybrids on seed oil and protein contents. N management by the application of T3 (60% N from PM + 38.5% N from urea through fertigation + 1.5% N from urea through foliar application) produced significantly more plant height, cob diameter, number of grains per cob, grain yield, biological yield, seed protein and seed oil contents. The interaction of single cross-6142 and T3 (60% N from PM + 38.5% N from urea through fertigation + 1.5% N from urea through foliar application) was found superior in production of more plant height, cob diameter and number of grains per cob. However, interaction between maize hybrids and N application methods for grain yield, biological yield, seed protein and oil contents was reported nonsignificant. It can be concluded that single cross hybrid-6142) and T3 (60% N from PM, 38.5% N from urea through fertigation and 1.5% N from urea through foliar application) could be used successfully for improving maize yield under the irrigated conditions.

Growth patterns and yield of maize (Zea mays) hybrids as affected by nitrogen rate and sowing date in southern Brazil

2020 ◽  
Vol 71 (12) ◽  
pp. 976
Author(s):  
Antonio Eduardo Coelho ◽  
Luis Sangoi ◽  
Alvadi Antonio Balbinot Junior ◽  
Samuel Luiz Fioreze ◽  
Juliano Berghetti ◽  
...  
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Plant Height ◽  
Grain Filling ◽  
Sowing Date ◽  
Early Spring ◽  
Southern Brazil ◽  
Maize Hybrids ◽  
N Rates ◽  
Spring Sowing

Sowing date and nitrogen (N) fertilisation modify the morpho-physiological characteristics of maize (Zea mays L.) plants, which can alter the yield. The aim of this study was to analyse the effects of sowing date and N rate on the growth-pattern characteristics of maize hybrids with contrasting cycles, and the subsequent relationship with grain yield. Two experiments were set up in Santa Catarina State, southern Brazil. Two maize hybrids (AG9025, super-early cycle; P30F53, early cycle), two sowing periods (early spring and late spring), and four rates of topdressed N (0, 150, 300 and 450 kg N ha−1) were tested. Plant height, leaf area index (LAI), and relative chlorophyll content (RCC) were evaluated. The increment in N rate increased plant height at the silking stage for early spring sowing, and had no effect for late spring sowing. Higher N rates increased plant height of P30F53 and did not affect plant height of AG9025. Increasing the N rate enhanced LAI and RCC at silking more sharply when maize was sown in early spring. Higher N rates resulted in increased RCC during grain-filling, as well as maintenance of LAI, factors that were strongly associated with grain yield, especially for early spring sowing with hybrid P30F53. This research shows that the use of increasing N rates is an adequate management strategy to increase maize grain yield when the crop is sown in early spring. When applied at this sowing time, N has greater effect on the elevation of LAI and RCC and their maintenance during grain filling.

DESEMPENHO AGRONÔMICO DE GENÓTIPOS DE MILHO SUBMETIDOS AO ESTRESSE HÍDRICO NO SUL DO ESTADO DO TOCANTINS

2018 ◽  
Vol 17 (2) ◽  
pp. 177
Author(s):  
AURÉLIO VAZ DE MELO ◽  
VALDERE MARTINS DE SANTOS ◽  
MARCO ANTONIO FERREIRA VARANDA ◽  
DIONE PEREIRA CARDOSO ◽  
MARILENE ALVES RAMOS DIAS
Keyword(s):  
Zea Mays ◽  
Water Stress ◽  
Grain Yield ◽  
Plant Height ◽  
Climatic Variability ◽  
Maize Crop ◽  
Lattice Design ◽  
Maize Genotypes ◽  
Stress Environment ◽  
Free Environment

 RESUMO - A cultura do milho apresenta sensibilidade à variação climática, sendo o déficit hídrico uma das causas frequentes de redução de produção na cultura. O presente trabalho teve como objetivo avaliar a performance de genótipos de milho sob estresse hídrico, no sul do Estado do Tocantins. O experimento foi implantado no município de Gurupi - TO, utilizando 64 híbridos de milho. O delineamento experimental utilizado foi Látice 6x6, com três repetições. As características avaliadas foram altura da planta, floração masculina, floração feminina, altura de inserção da espiga e produtividade de grãos. Em ambiente sem estresse foram observadas maiores médias de altura da planta em comparação ao ambiente com estresse. No ambiente com estresse o genótipo 8 apresentou a maior média de altura de plantas (129 cm). Não houve diferença estatística entre os ambientes quanto ao número de dias para o florescimento masculino. A produtividade de grãos foi significativamente maior em ambiente sem estresse. O genótipo 59 apresentou a maior média de produtividade de grãos sob estresse (7.317,6 kg ha-1) e o genótipo 9 apresentou a maior média de produtividade de grãos em ambiente sem estresse (11.551,3 kg ha-1). Os resultados demonstraram que os cultivares de milho apresentam comportamento distinto quanto à tolerância ao estresse hídrico. Os genótipos que apresentaram as menores médias de produtividade no ambiente sem estresse foram 35 e 40. Os genótipos com maiores médias de produtividade no ambiente sem estresse foram 57, 7, 15 e 61.Palavras-chave: Zea mays, condições adversas, estiagem.AGRONOMIC PERFORMANCE OF MAIZE GENOTYPES SUBJECTED TO WATER STRESS IN THE SOUTH OF TOCANTINS STATE ABSTRACT - The maize crop is sensitive to climatic variability and water deficit is one of the frequent causes of yield decrease. The objective of this work was to evaluate the performance of maize genotypes under water stress in the southern Tocantins State. The experiment was carried out in the municipality of Gurupi - TO, using 64 maize hybrids. A 6x6 lattice design was used, with three replications. The evaluated characteristics were plant height, male flowering, female flowering, height of insertion of the ear and grain yield. For plant height it was observed that the stress-free environment provided higher PA means compared to the stress environment. In the environment with stress, the cultivar 8 presented the highest average plant height (129, cm). No statistical difference between environments was observed in the number of days for male flowering. Regarding grain yield, the stress-free environment provided significantly higher values of grain yield compared to the stress environment. The cultivar 59 presented the highest grain yield (7317.6 kg ha-1) under stress and cultivar 9 had the highest grain yield (11551.3 kg ha-1) in the environment without stress. The results showed that maize cultivars presented different behavior regarding tolerance to the water stress. The cultivars with the lowest productivities in the environment without stress were 35 and 40. The cultivars with the highest productivities in the environment without stress were 57, 7, 15 and 61.Keywords: Zea mays, adverse conditions, drought.

Study onGenetic Variability, Heritability and Genetic Advance for Seed Yield and Component Traits in Rice

2017 ◽  
Vol 4 (03) ◽  
Author(s):  
PUNIT KUMAR ◽  
VICHITRA KUMAR ARYA ◽  
PRADEEP KUMAR ◽  
LOKENDRA KUMAR ◽  
JOGENDRA SINGH
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Seed Yield ◽  
Flag Leaf ◽  
Grain Weight ◽  
Major Influence ◽  
Genetic Advance ◽  
Component Traits ◽  
Biological Yield ◽  
1000 Grain Weight

A study on genetic variability, heritability and genetic advance for seed yield and component traits was made in 40 genotypes of riceduring kharif 2011-2012 at SHIATS, Allahabad. The analysis of variance showed highly significant differences among the treatments for all the 13 traits under study.The genotypes namely CN 1446-5-8-17-1-MLD4 and CR 2706 recorded highest mean performance for panicles per hill and grain yield. The highest genotypic and phenotypic variances (VG and VP) were recorded for spikelets per panicle (3595.78 and 3642.41) followed by biological yield (355.72 and 360.62) and plant height (231.48 and 234.35).High heritability (broad sense) coupled with high genetic advance was observed for plant height, flag leaf length, panicles per hill, tillers per hill, days to maturity, spikelet’s per panicle, biological yield, harvest index, 1000 grain weight and grain yield, indicating that selection will be effective based on these traits because they were under the influence of additive and additive x additive type of gene action. Highest coefficient of variation (PCV and GCV) was recorded for tillers per hill (18.42% and 17.23%), panicle per hill (19.76 % and 18.68%), spikelet’s per panicle (34.30 and34.07 %), biological yield (28.31 % and 28.12 %), 1000 grain weight (15.57 % and 15 31 %) and grain yield (46.66% and 23.54 %), indicating that these traits are under the major influence of genetic control, therefore the above mentioned traits contributed maximum to higher grain yield compared to other traits, indicating grain yield improvement through the associated traits.

scholarly journals AGRONOMIC CHARACTERISTICS AND GRAIN YIELD OF SORGHUM AND MAIZE HYBRIDS GROWN WITH DIFFERENT SOWING TIMES1

2021 ◽  
Vol 34 (4) ◽  
pp. 780-790
Author(s):  
PAULO VINICIUS DEMENECK VIEIRA ◽  
PAULO SÉRGIO LOURENÇO DE FREITAS ◽  
ANDRÉ LUIZ BISCAIA RIBEIRO DA SILVA ◽  
ANA CLAUDIA SOSSAI SOUZA ◽  
JULIANA MARQUES VORONIAK
Keyword(s):  
Experimental Design ◽  
Grain Yield ◽  
Leaf Area Index ◽  
Maize Crop ◽  
Area Index ◽  
Maize Hybrids ◽  
Agronomic Characteristics ◽  
West Region ◽  
Spikelets Per Panicle ◽  
Grown Plant

ABSTRACT Sorghum is a commonly grown plant in the Central-West region of Brazil as a second crop; however, it is grown almost exclusively as a second crop after maize in the state of Paraná (South region). The growth of sorghum crops is an option for areas or times in which the growth of maize crops can be risky. Thus, the objective of this work was to evaluate the agronomic characteristics of eight sorghum hybrids (ADV-123, ADV-114, 1G100, 50A10, 1G244, 50A40, 50A50, and 1G282) grown in three sowing times in two agricultural years: 2014 (February 20, March 02, and March 03) and 2015 (February 09, February 19, and March 01), and four maize hybrids in 2014 (DKB-330-Pro, P-3431-HX, Formula-TL, and AG-9010-Pro) and five maize hybrids in 2015 (DKB-330-Pro, P-3431-HX, Formula-TL, DKB-275-Pro, and DKB-290-Pro), in the same sowing times used for sorghum. A randomized complete block experimental design with a split-plot factorial arrangement was used, with the sowing times in the plots and the hybrids in the sub-plots. The variables evaluated were: number of days from sowing to flowering, leaf area index, 1,000-grain weight, grain yield, number of spikelets per panicle, for the sorghum crop; and number of rows per ear and number of grains per row, for the maize crop. The comparison between the two crops showed that the sorghum maintained higher production stability in the different sowing times.

scholarly journals Selection of best lines and hybrids on the basis of genetic variability analysis in Maize (Zea mays L.)

2020 ◽  
Vol 5 (01) ◽  
pp. 45-49
Author(s):  
Ankit Kumar ◽  
Amit Tomar
Keyword(s):  
Zea Mays ◽  
Genetic Variability ◽  
Grain Yield ◽  
Plant Height ◽  
Zea Mays L ◽  
Grain Weight ◽  
Variability Analysis ◽  
Selection Of

The results revealed that parents namely, TSK-10, TSK-27, New Blue-II, Kurara and TSK-109 were found highly genetic diverse for days to 50% tasseling, days to 50% silking, days to 755 dry husk. The parents namely, TSK-109, Kurara, New Blue-II and TSK-10 were found highly genetic diverse for plant height (cm), cob height, number of cobs per plant and number of grains per cob. The parents namely, Kurara, TSK-109, TSK-10, New Blue-II and TSK-27 were found highly genetic diverse for shelling percentage, grain yield per plant, grain yield per cob and 100-grain weight.

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.

scholarly journals Effect of different tillage practices and nitrogen level on wheat production under inner terai of Nepal

2020 ◽  
Vol 3 (1) ◽  
pp. 233-239 ◽  
Author(s):  
Sampurna Bartaula ◽  
Urbasi Panthi ◽  
Anil Adhikari ◽  
Mohan Mahato ◽  
Darbin Joshi ◽  
...  
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Harvest Index ◽  
Nitrogen Level ◽  
Zero Tillage ◽  
Significant Relation ◽  
Tillage Practice ◽  
Tillage Practices ◽  
N Level ◽  
Biological Yield

A field experiment was conducted to evaluate the plant height, yield and yield attributes of wheat under different tillage practices and nitrogen level at Dang, Nepal during winter season 2018-19. The experiment was laid out in split plot design with two tillage practices viz. zero tillage and conventional tillage as main plot factor and four level of N viz. 50 kg ha-1, 75 kg ha-1, 100 kg ha-1and 125 kg ha-1 as sub plot factor and each replicated thrice.  The result revealed that there is no significant relation between tillage practice and plant height of wheat while N level significantly affect the plant height. 125 kg N ha-1 recorded the highest plant height (110.7 cm). Zero tillage recorded the highest effective tiller m-2 (254) and grain yield (3.3 t ha-1) whereas spike length, grain spike-1, biological yield and harvest index were not significant with tillage practices. Regarding the N level, 125 kg N ha-1 recorded the highest effective spike m-2 (279), spike length (10.6 cm), grain spike-1 (48), thousand grain weight (46.3 g), grain yield (3.6 t ha-1) and biological yield (9.4 t ha-1). 50 kg N ha-1 recorded the highest harvest index (42.9%). The interaction between the tillage practice and nitrogen level showed the significant effect on grain yield and harvest index where as other parameters showed non-significant relation. The zero tillage with 125 kg N ha-1 recorded the highest grain yield (3.9 t ha-1).

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