scholarly journals Use of Fertilizers and Lime for Enhancing Productivity of Maize Genotypes in Western Hill of Nepal

2014 ◽  
Vol 8 ◽  
pp. 42-49
Author(s):  
Bishnu H. Adhikary ◽  
Krishna B. Karki
Keyword(s):  
Experimental Study ◽  
Plant Growth ◽  
Grain Yield ◽  
Summer Season ◽  
Grain Production ◽  
Maize Productivity ◽  
Maize Genotypes ◽  
Maize Varieties ◽  
Maize Variety ◽  
Yield Result

Farmers' field experiment was conducted at Outreach sites in Tanahun and Palpa districts of Western Nepal with the objectives of evaluating the effects of fertilizers and agricultural lime on grain production of the local and improved (Manakamana-1) maize varieties during summer season of year 2003 and 2004. Farmer's practice (without fertilizers) and with   fertilizer 60: 30: 30 kg (N: P2O5: K2O) per hectare with or without agricultural lime (4 t ha-1), were the treatments in experimental study that was conducted in factorial RCB design with four farmers as replications. The results revealed that response of fertilizers and agricultural lime was observed significant plant growth and kernels production including varieties in both sites of Palpa and Tanahun districts. The highest grain yield of 5.1 t ha-1 was produced by the local variety when the crop was supplied with 60:30:30 kg N, P2O5 and K2O ha-1 along with 4 t ha-1 of agricultural lime in Tanahun. Manakamana-1 variety produced the maximum grain yield (4.45 t ha-1) with the same level of fertilization. The two district mean grain yield result indicated that the highest grain yield of 3.9 t ha-1 was produced when the crop was supplied with 60: 30: 30 kg N, P2O5 and K2O ha-1 with agri-lime. Hence it is suggested that to increase maize productivity in the hills irrespective of the maize variety application of fertilizers (60: 30: 30) with agricultural lime (4 t ha-1) is needed.Nepal Agric. Res. J. Vol. 8, 2007, pp. 42-49DOI: http://dx.doi.org/10.3126/narj.v8i0.11578

HYBRID MATURITY AND THE RELATIVE IMPORTANCE OF GRAIN AND STOVER FOR THE ASSESSMENT OF THE FORAGE POTENTIAL OF MAIZE GENOTYPES GROWN IN MARGINAL AND NON-MARGINAL ENVIRONMENTS

1980 ◽  
Vol 60 (2) ◽  
pp. 539-545 ◽  
Author(s):  
N. A. FAIREY
Keyword(s):  
Grain Yield ◽  
Forage Yield ◽  
Grain Production ◽  
Forage Production ◽  
Forage Maize ◽  
Maize Hybrids ◽  
Maize Genotypes ◽  
Maize Varieties ◽  
The Relationship

Ninety-seven maize hybrids of differing maturities and genetic constitutions were grown at three somewhat dissimilar environments (Agassiz, Sumas and Surrey) in British Columbia. The study attempted to elucidate the nature of relationships existing between important performance characteristics of maize for both forage (whole crop) and grain production. Forage yield was linearly related to grain yield at each location and the relationship was distinct for each location. However, grain yield was not a good indicator of forage productivity, with coefficients of determination of 51.0, 33.1 and 13.5% for Agassiz, Sumas and Surrey, respectively. Maize hybrids best adapted for forage production were somewhat later in corn heat unit (CHU) maturity ratings than those adapted for grain production. However, the CHU rating system appears to be less useful for making practical management decisions on the most suitable hybrid maturity for the production of forage than it is for the production of grain. At each location, forage DM content was dependent on the DM content of the stover and the proportion of total DM as grain or in the ear. In future, greater emphasis should be given to evaluating maize varieties independently for forage and grain production, and to the quality and yield of the stover component of forage maize.

scholarly journals Evaluation of Quality Protein Maize Genotypes for Grain Yield in Mid Hill Districts of Nepal

2016 ◽  
Vol 10 (1) ◽  
pp. 7-9
Author(s):  
Jiban Shrestha
Keyword(s):  
Grain Yield ◽  
Life Sciences ◽  
Field Trials ◽  
Summer Season ◽  
Quality Protein Maize ◽  
Maize Genotypes ◽  
Superior Genotypes

The present study pertaining to the identification of high yielding quality protein maize genotypes was conducted under coordinated varietal trials (CVT) at Khumaltar (Lalitpur) and Kabre (Dolakha) from 2011 to 2012 summer season and under coordinated farmers' field trials (CFFT) at Lumle (Kaski), Kimugaun (Dailekh) and Kabre (Dolakha) in 2011 summer season and at Dailekh and Kabre in 2012 summer season. The results of these trials showed that the genotypes namely Obatanpa followed by S99TLWQ-B and S01SIYQ produced the highest grain yield under coordinated varietal trials and genotypes namely S99TLYQ-B followed by S01SIWQ-3 and Poshilo Makai-1 produced the highest grain yield under coordinated farmers' field trials across testing sites and years. It is suggested that the superior genotypes derived from CFFT could be released and then recommended to farmers of mid hills of Nepal.International Journal of Life Sciences 10 (1) : 2016; 7-9

scholarly journals Impact of Different Nitrogen Levels to the Grain Yield and Yield Components of Some Corn (Zea mays L.) Hybrids

2021 ◽  
pp. 48-60
Author(s):  
Wisam Khald Sabri ◽  
Abdullah Oktem
Keyword(s):  
Grain Yield ◽  
Leaf Area Index ◽  
Nitrogen Fertilizer ◽  
Kernel Weight ◽  
Total Chlorophyll ◽  
Area Index ◽  
Nitrogen Levels ◽  
Maize Genotypes ◽  
Maize Varieties ◽  
Single Cross

Aims: The study was designed to elucidate the effect of different nitrogen (N) fertilizer levels on five different maize cultivars. Study Design:  A split plot experimental design in randomized complete blocks (RCBD) with three replicates. Arrangement of seven nitrogen levels and five single cross hybrids were compared. Main plots were nitrogen levels and subplots were varieties. Place and Duration of Study: College of Agricultural Engineering Sciences at the University of Duhok, Iraq. The study was undertaken fromMarch– August 2021. Methodology: At the present research, five single cross-hybrid corn varieties were used, which were: CADZ, DKC6050, DRACHMA, MYIMY and ZP6468D. Arrangement of seven nitrogen fertilizer levels were 0, 50, 100, 150, 200, 250 and 300 kg N ha−1. The following features were studied: plant height, leaf area index, thousand kernel weight, total grain yield, total chlorophyll, protein% and oil %.The collected data were projected to SAS software program for analysis. The significant differences between treatment means were calculated using Duncan’s multiple ranges. Results: It was reveal that there were significant effect of different nitrogen fertilizer levels, maize genotypes as well as the interaction of nitrogen and genotype of maize (P<.01) for plant height, leaf area index, 1000 kernel weight, total grain yield, total chlorophyll and protein %. However, There were no significant differences between different maize genotypes as well as different nitrogen fertilizer levels (P>.05) with oil %, but the interaction of nitrogen and genotype of maize was significant (P<.01). Conclusion: Increasing the amount of nitrogen had better effect on studied characteristics of different maize varieties, in which adding 300 kg nitrogen had optimum results. In considering the response of maize varieties to nitrogen, the best variety was DRACHMA genotype while the worst variety was CADZ genotype, however this hybrids was superior in some traits.

scholarly journals Impact of mulch tillage and fertilization on growth and development of winter wheat plants in clean fallow in Northern Steppe of Ukraine

2017 ◽  
Vol 7 (4) ◽  
pp. 511-516
Author(s):  
A. I. Tsyliuryk ◽  
Yu. I. Tkalich ◽  
S. V. Masliiov ◽  
V. I. Kozechko
Keyword(s):  
Plant Growth ◽  
Winter Wheat ◽  
Grain Yield ◽  
Fuel Economy ◽  
Growth And Development ◽  
Grain Production ◽  
Plant Growth And Development ◽  
High Quality ◽  
Soil Cultivation ◽  
Fallow Field

In conditions of the northern steppe of Ukraine, while cultivating winter wheat after corn in clean fallow the expediency of shallow mulch tillage (disk, flat-cut (early fallow)) has been justified, which provides obtaining equivalent biometric indicators of plant growth and development, grain yield compared to the fall-plowing (the yield of grains for plowing is 5,24-5,50 t/ha, the disking is 5,17-5,60 t/ha, flat-topping loosening (early fallow) – 5,04-5,52 t/ha) on the organic and mineral background (stubble residues + N30-60P30K30). The autumn disk and spring flat-cut cultivation of the fallow field on the background of applying N30-60P30K30 ensure the annual yield of high quality grain of the 3d class (protein – 11,6-12,3%, gluten – 22,6-24,6%), and also contribute to fuel economy during soil cultivation – 22-29 l/ha and guarantee high profitability of grain production at the level of 110-123%).

scholarly journals Evaluation on reprogramed biological processes in transgenic maize varieties using transcriptomics and metabolomics

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Wei Fu ◽  
Pengyu Zhu ◽  
Mingnan Qu ◽  
Wang Zhi ◽  
Yongjiang Zhang ◽  
...  
Keyword(s):  
Genetic Background ◽  
Genetically Modified Organisms ◽  
Gene Cassette ◽  
Molecular Profiling ◽  
Unintended Effects ◽  
Gene Effects ◽  
Maize Productivity ◽  
Targeted Analysis ◽  
Maize Varieties ◽  
Maize Variety

AbstractGenetic engineering (GM) has great potential to improve maize productivity, but rises some concerns on unintended effects, and equivalent as their comparators. There are some limitations through targeted analysis to detect the UE in genetically modified organisms in many previous studies. We here reported a case-study on the effects of introducing herbicides and insect resistance (HIR) gene cassette on molecular profiling (transcripts and metabolites) in a popular maize variety Zhengdan958 (ZD958) in China. We found that introducing HIR gene cassette bring a limited numbers of differential abundant genes (DAGs) or differential abundant metabolites (DAMs) between transgenic events and non-transgenic control. In contrast, averaged 10 times more DAGs and DAMs were observed when performed comparison under different growing environments in three different ecological regions of China than the numbers induced by gene effects. Major biological pathways relating to stress response or signaling transduction could explain somehow the effects of growing environments. We further compared two transgenic events mediated ZD958 (GM-ZD958) with either transgenic parent GM-Z58, and other genetic background nonGM-Z58, nonGM-ZD958, and Chang7-2. We found that the numbers of DAGs and DAMs between GM-ZD958 and its one parent maize variety, Z58 or GM-Z58 is equivalent, but not Chang7-2. These findings suggest that greater effects due to different genetic background on altered molecular profiling than gene modification itself. This study provides a case evidence indicating marginal effects of gene pleiotropic effects, and environmental effects should be emphasized.

scholarly journals Productivity of winter maize as affected by varieties and fertilizer levels

2020 ◽  
Vol 4 (1) ◽  
pp. 85-93
Author(s):  
Bishnu Hari Adhikary ◽  
Bandhu Raj Baral ◽  
Jiban Shrestha
Keyword(s):  
Grain Yield ◽  
Research Program ◽  
Block Design ◽  
Yield Production ◽  
Maize Genotypes ◽  
Maize Varieties ◽  
Randomized Complete Block Design ◽  
Nitrogen Phosphorus

Grain yield production of maize is greatly affected by varieties and fertilizer levels. This study was conducted to determine the effects of different rates of fertilizers (nitrogen, phosphorus, potassium fertilizers and farmyard manures) on grain yield and yield attributing traits of different maize varieties during winter seasons of 2009/10 and 2010/011 at the research farm of National Maize Research Program, Rampur, Chitwan, Nepal. Six levels of fertilizers [Control (Zero fertilizer), FYM @ 10 t/ha, FYM@ 10 t/ha plus 60:30 20 kg NPK/ha, FYM@ 10 t/ha plus 120: 60: 40 kg NPK/ha, FYM@ 10 t/ha plus 180: 90: 60 kg NPK/ha, and 120: 60: 40 kg NPK/ha] and four maize varieties (Rampur Composite, Manakamana-4, Across9942 × Across 9944 and S99TLYQ-B) were evaluated in randomized complete block design with three replications. The results showed that grain yield was non-significant for maize genotypes but the fertilizers levels were highly significant for grain yield. Rampur Composite produced the highest grain yield (5195 kg/ha), followed by Manakamana-4 (5074 kg/ha), Across9942 × Across9944 (5052 kg/ha) and S99TLYQ-B (4789 kg/ha) with the application of NPK 180: 90: 60 kg/ha plus FYM 10 t/ha. This information is useful in generating suitable fertilization packages for obtaining higher grain yield of maize varieties.

scholarly journals Evaluating Adaptability and Genetic Variability of Improved Maize Varieties

2021 ◽  
Vol 8 (5) ◽  
Author(s):  
Abenezer Abebe ◽  
Zelalem Tafa ◽  
Worknesh Terefe
Keyword(s):  
Grain Yield ◽  
Gene Action ◽  
Female Flower ◽  
Genetic Advance ◽  
Additive Gene Action ◽  
Maize Varieties ◽  
Significant Difference ◽  
Maize Variety ◽  
Additive Gene ◽  
High Heritability

Maize is one of the most important cereals broadly adapted worldwide. Though, a number of improved maize varieties have been released, each micro-environment has not been touched that is why the study carried out. The experiment was conducted using seven maize varieties in RCB design with three replications. The analysis of variance signifies the presence of significant difference (p<0.05) among the seven maize varieties evaluated. High value of genetic (GCV) and phenotypic coefficient of variation (PCV) for grain yield (25.1 and 37.8%) were estimated and this infers less influence of environment. Additionally, moderately high heritability (44.2%) and high genetic advance in percent mean (34.4%) were estimated for grain yield which indicate the trait governed by additive gene action and could be improved via selection based on phenotypic performance. However, traits (male and female flower) with high heritability and moderate genetic advance in percent mean inherited mostly by non-additive gene action and heterosis breeding could be useful. Regarding agronomic performance, Hora maize variety provided highest grain yield (5.0 t/ha) followed by Kuleni (4.1 t/ha), Melkasa 2 (4.0 t/ha) and check (4.0 t/ha). Hora, Melkasa 2, Melkasa 4 and check flowered earlier as compared to the other and could be used as parent for generating early flowering varieties. In summary, Hora maize variety was better performing both statistically and in eyes of farmers and need seed multiplication and distribution to farming community. Moreover, the variability observed among the maize varieties could be utilizing in future breeding activities.

scholarly journals Effect of different levels of nitrogen on growth and yield of hybrid maize (Zea mays L.) varieties

2021 ◽  
Vol 4 (2) ◽  
pp. 48-62
Author(s):  
Kripa Adhikari ◽  
Sudip Bhandari ◽  
Krishna Aryal ◽  
Mohan Mahato ◽  
Jiban Shrestha
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Growth And Yield ◽  
Maize Production ◽  
Factors Affecting ◽  
Net Returns ◽  
Maize Varieties ◽  
Maize Variety ◽  
Four Levels ◽  
Hybrid Maize

Nitrogen (N) fertilizer is considered as one of the most important factors affecting growth and grain yield of hybrid maize. This study was conducted to determine the effects of different rates of nitrogen and varieties on growth and yield of hybrid maize in Lamahi Municipality, Dang, Nepal from June to October, 2019. Three levels of hybrid maize varieties (10V10, Rajkumar F1 and NMH-731) and four levels of nitrogen (160, 180, 200 and 220 kg N ha-1) were evaluated using two factorial randomized complete block design with three replications. The results showed that grain yield and yield attributing traits of hybrid maize varieties increased with the increasing level of nitrogen from 160 to 220 kg ha-1. The application of nitrogen @ 220 kg N ha-1 produced the highest grain yield (10.07 t ha-1), cob length (16.33 cm), no of rows per cob (14.97), no of grains per row (33.37), cob diameter (4.54), thousand grain weight (276.77 g), stover yield (12.91 t ha-1), biological yield (23.00 t ha-1), harvest index (43.80), gross return (NRs. 208940 ha-1), net return (NRs.104488 ha-1) and B:C ratio (2.001). The hybrid maize variety 10V10 produced the highest grain yield (9.35 t ha-1), net returns (NRs. 91740.66 ha-1) and B:C ratio (1.91) accompanied by the highest cob length (16.25 cm), and as number of grains per row (32.35) as compared to other varieties. This study suggested that maize production can be maximized by cultivating hybrid maize variety 10V10 with the use of 220 kg N ha-1 in inner Terai region of Nepal.

scholarly journals Productivity of maize (Zea mays L.) as affected by varieties and sowing dates

2018 ◽  
Vol 2 (2) ◽  
Author(s):  
Dil Bahadur Gurung ◽  
Balram Bhandari ◽  
Jiban Shrestha ◽  
Mahendra Prasad Tripathi
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Research Program ◽  
Zea Mays L ◽  
Sowing Date ◽  
Research Field ◽  
Yield Potential ◽  
Grain Production ◽  
Sowing Dates ◽  
Maize Varieties

Genotypic yield potential of maize varieties is greatly affected by sowing dates. In order to investigate the effects of sowing dates and varieties on the grain yield of maize, the field experiment was carried out at research field of National Maize Research Program (NMRP), Rampur, Chitwan, Nepal from April 2009 to March 2010.  Three varieties namely Rampur Composite, Arun-2 and Gaurav were sown at every week. The results of experiment showed that interaction effect of variety and sowing date on grain yield of maize was significant. Rampur Composite produced highest grain yield (6.1 t/ha) in August and lowest yield (2.6 t/ha) in May. Similarly Arun-2 produced highest yield (4.6 t/ha) in August and lowest yield (2.1 t/ha) in May. Gaurav produced highest grain yield (5.1 t/ha) in September followed by 4.9, 4.8 and 4.6 t/ha in February, July and August respectively and lowest yield (1.5 t/ha) in November. The sowing date was highly significant on grain production. The highest grain production was 5.1 t/ha in August followed by in February (4.9 t/ha), September (4.6 t/ha) and March (4.4 t/ha) respectively. The lowest grain yield was produced in May (2.4 t/ha). Therefore it was concluded that August planting was best for higher grain production of maize varieties (Rampur Composite, Arun-2 and Gaurav) in terai region of Nepal.

Genetic analysis of low-n traits in maize (Zea mays L) using triple test cross

2021 ◽  
Vol 20 (1) ◽  
pp. 17-28
Author(s):  
M.S. Afolabi ◽  
G.O. Agbowuro ◽  
A.E Salami ◽  
M.O. Akoroda
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Inbred Lines ◽  
Triple Test Cross ◽  
Test Cross ◽  
Triple Test ◽  
Maize Varieties ◽  
Maize Variety ◽  
Ear Height ◽  
Low Nitrogen

Low-N maize variety is developed for its ability to tolerate low nitrogen soil environment. This experiment was conducted to study the genetic implication of Low-N maize variety for grain yield and related traits under low nitrogen soil conditions triple test cross analysis. Inbred lines used for the study were generated from twelve low nitrogen tolerance open pollinated maize varieties after six generations of selfing. Two inbred lines along with their F1 were used as testers for ten inbred lines in a triple test cross pattern to generate 30 crosses. The 30 crosses, their parents and the testers to State University, Ado-Ekiti during 2017 planting season. The experimental design was a Randomized Complete Block Design (RCBD). Data were collected on plant height, ear height, days to 50% anthesis, days to 50% silking, incidence of curvularia leaf spot, blight, plant aspect, ear aspect, ear rot, stay green, cob per plant, ear weight, grain moisture content and grain yield. All data were subjected to analysis of variance and complete genetic estimates. Additive and dominants were significant (P < 0.05) for all traits; however, epitasis estimates were not significant for all the traits tested. The degree of dominance component indicated partial dominance for all the traits. Correlation coefficients for days to 50% anthesis and 50% silking, plant height, ear height, number of cobs per plant and grain yield were positive and significant (P < 0.05). Since both additive and dominance gene actions were important for low-N traits, the use of reciprocal recurrent selection procedure can be adopted in incorporating the trait into elite maize varieties.

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