Corn Hybrids Research Articles

Proizvodnja i stanje tržišta kukuruza po principima održivog razvoja

The constant pretension of people for food indicates the importance of agriculture and technology, and places them among the most important economic branches. Agriculture in the modern world ensures the general progress of society in the economic and cultural aspects and represents an economic branch that ensures the material survival of mankind. Given the fact that the world's population is growing faster and that the need for daily food is constantly increasing, it is neces sary to start as soon as possible with the implementation of sustainable methods in agricultural production at all levels. Corn, as an agricultural product, is of great importance for the sustainable development of agriculture and belongs to field wide-row crops, which belongs to the group of cereals. Cultivation of this culture is best achieved in climatic conditions, from moderate to tropical, where in the periods of the year when daily average temperatures do not fall below 15 °C, they belong to C-4 plants, which do not tolerate low temperatures. New varieties and hybrids of corn enable higher and more stable yields in different climates, which implies that the correct selection of hybrids is sustainable development, not only for the corn crop and its price as a product on the cereal market. The subject of the paper is to point out the importance of sustainable development for the corn market as an agricultural product. The aim of the work is to assess the possibility of sustainable corn production in order to create a competitive product for the foreign market, as well as the potential and advantages of Serbia for the implementation of new or corrected production technologies that are characterized by respect for the principles of sustainable development.

Corn rootworm larvae management using traited corn hybrids near Cavour, SD, 2023

Corn rootworm larvae management using traited corn hybrids near Cavour, SD, 2023

Yield indexes and effective productivity in corn hybrids of different fao groups for different sowing periods in the Northern Steppe of Ukraine

Yield indexes and effective productivity in corn hybrids of different fao groups for different sowing periods in the Northern Steppe of Ukraine

Current range of corn hybrids in Ukraine: analysis and prospects

Current range of corn hybrids in Ukraine: analysis and prospects

Corn genotypes with resistance to fungal plant pathogens and Ostrinia furnacalis Guenee

The paper presents the data of a study on different corn genotypes (zea mays) from a control nursery. Corn is one of the staple crops grown in the south of the Russian Far East. The intensive use of zea mays has been creating outbreaks of fungal diseases and phytophagous pests. For this reason, breeding corn hybrids (varieties) with resistance to plant pathogens and pests is necessary. Our research identified hybrids with high resistance to Ostrinia furnacalis G., Helminthosporium turcicum Р. Bipolaris spp., and Fusarium moniliforme S. The following hybrids had the highest resistance to Helminthosporium turcicum Р.: Primorskii 502, Primorskii 546, Primorskii 547, Primorskii 567, Primorskii 587, Primorskii 588, and Primorskii 597. Hybrids Primorskii 561 and Primorskii 794 were the most resistant to Bipolaris spp. Hybrids Primorskii 563, Primorskii 576, Primorskii 621, Primorskii 730, and Primorskii 697 were characterized by the highest resistance to Fusarium moniliforme S.

Rootworm larval management using traited corn hybrids near Colman, SD, 2023

Rootworm larval management using traited corn hybrids near Colman, SD, 2023

Innovative aspects of increasing the yield and quality of corn grain in Western Siberia

The results of three years of research (2021-2023) to study the effectiveness of using growth stimulants on corn when grown for grain are presented. It has been shown that on leached chernozem in two ecological points of the Novosibirsk Ob region TPP “Praktik” of the Novosibirsk region, CJSC breeding plant “Irmen” of the Ordynsky district of the Novosibirsk region, growth stimulants increased the growth rate and development of corn when grown for grain. In experiments, the effect of growth stimulants on the yield and quality of grain of three F1 corn hybrids of early ripening was studied: Kubansky 101, Kubansky 102 and Katerina. Growth stimulants were used by pre-planting seed treatment, spraying in the fourth leaf phase and at the beginning of flowering of corn plants. Growth stimulants increased the yield of corn grain by 33% relative to the control (water) in the hybrid Katerina F1. A significant improvement in the biochemical composition of corn grain was noted with the use of growth stimulants: an increase in protein content by 0.4-0.8%, BEV and fat.

Stability yield indices on different sweet corn hybrids based on AMMI analysis.

Currently, sweet corn is considered an important crop due to its high sugar content and low starch content. Important sugars in sweet corn include sucrose, fructose, glucose, and maltose. The purpose of the present study was to use the yield indices of the eight examined sweet corn hybrids and the correlation of the yield indices together. Concentration is important for consumers in terms of yield indices. The research site was located at the Látókép Experimental Station of the University of Debrecen. The small plot experiment had a strip plot design with four replications. The previous crop was sweet corn; the plant density was 64 thousand/ha. The obtained result indicates that Biplot AMMI based on IPCA1 showed that the DB, NO, GS, and GB hybrids had stability and high performance in terms of yield indices. At the same time, fructose and glucose had stable parameters for the hybrids involved in the study. IPCA1 AMMI biplot showed that the ME hybrid had stability and high performance in terms of iron and zinc as well. IPCA2 AMMI biplot showed that DE, GB, and GS hybrids had stability and the highest performance on yield parameters in the scope of the research. Fructose, glucose, and sucrose had stable parameters on hybrids based on IPCA2. The DB and SE hybrids had desirable performance in Lutein and Zeaxanthin based on the biplot. The DE hybrid had a maximum performance on iron and zinc parameters.

Dual Purpose Corn Hybrids (Grain-Silage) Performance Assessment in Northeastern Kansas. I. Grain Yield

Dual Purpose Corn Hybrids (Grain-Silage) Performance Assessment in Northeastern Kansas. I. Grain Yield

The influence of the plant protection system on the productivity of corn hybrids when grown under irrigation conditions in the south of Ukraine

The influence of the plant protection system on the productivity of corn hybrids when grown under irrigation conditions in the south of Ukraine

Viability of simultaneously selecting for grain yield and seed physiological quality in maize

ABSTRACT: Currently, the demand is not only for more productive corn hybrids, but also for those with high physiological seed quality. Seed quality is considered the sum of genetic, physical, physiological and sanitary attributes that directly interfere in plant vigor. The objective of this study was to evaluate the physiological parameters of the seeds of parents and maize inter varietal hybrids obtained in a reciprocal recurrent selection program through physiological and image analysis techniques and either to study the feasibility of simultaneously selecting for seed physiological quality and grain yield. Two experiments were performed, one in the field and the other in the laboratory. The evaluated traits in the field were days of female flowering, days of male flowering, insertion of the 1st ear, plant height and grain yield. For the physiological quality, the attributes of germination at four days, germination at seven days, vigor by the cold test, emergence speed index, and the ratio of the root length to shoot length were obtained using GroundEye®. Heterosis was measured for the agronomic and physiological traits. Through the contrast between the inter varietal crosse hybrids and reciprocals we measured the maternal effect. The magnitudes of heterosis allowed us to infer that as greater as the number of selection and recombination cycles, on average, greater heterosis for the traits grain yield and seed germination. The correlated response indicated that, high yield intervarietal hybrids have better seed physiological quality.

Desempenho agronômico associado a utilização de fungicida na cultura do milho em ambiente subtropical

ABSTRACT: Fungal diseases in Brazilian regions with tropical and subtropical climates reduce the production potential of corn crops. The use of fungicides is one of the strategies to maintain productivity. This study evaluated the agronomic performance and grain quality of corn hybrids associated with the preventive use of fungicides in subtropical environments. Six experiments were conducted in Santa Maria-RS, São Vicente do Sul-RS, and FredericoWestphalen-RS during two sowing seasons. The experiment was conducted in a randomized complete block design with a split-plot arrangement, in which the main plot consisted of two levels of the fungicide factor (with and without) and the sub-plot consisted of six levels of corn hybrids (AG9025, AS1730, P3016, MG300, DKB230, and FEROZ). A total of 216 experimental plots were evaluated for grain productivity, and eight plants per plot were evaluated for other traits, totaling 1,728 evaluated plants. Therefore, environmental conditions influence the interaction between the factors of fungicide use and hybrid cultivar positioning, with no significant interaction in years with a water deficit. Early sowings in subtropical environments indicate better agronomic performance and a lower percentage of moldy grains regardless of the cultivation location, contributing to grain quality.

Enhancing non-Bt corn refuge based on corn grower and seed dealer surveys

Abstract To delay Bacillus thuringiensis (Bt) resistance, southern US corn growers are required to plant 20% of their total corn acres to non-Bt hybrids. However, most do not, possibly due to negative perceptions or the lack of availability of non-Bt hybrids. We surveyed 174 corn growers and 32 corn seed dealers in eastern North Carolina, an area that historically has planted little non-Bt corn. Our questions focused on planting behavior and hybrid choice, barriers to planting non-Bt corn, and preferences and challenges for non-Bt corn sales. Only 32% of growers surveyed planted the mandated non-Bt refuge acres. Growers from counties with smaller crop operations and in counties where growers had less graduate education planted less non-Bt seed. Grower perceptions of yield differences between Bt and non-Bt hybrids were ambiguous, but only a few had limited availability or knowledge of non-Bt seed options. Seed dealers were familiar with non-Bt corn hybrids in their portfolio, but not as familiar with non-Bt refuge requirements. Furthermore, dealers indicated obstacles in providing diverse herbicide packages and seed treatments for non-Bt hybrids. We highlight the need for enhanced communication and education initiatives. Strengthening educational outreach to clarify refuge requirements and addressing perceived yield disparities between Bt and non-Bt hybrids could also increase planting of non-Bt refuge. Finally, incentivizing seed dealers to offer and promote non-Bt seed options, coupled with diverse herbicide packages, might increase refuge planting. Our surveys underscore the complexity surrounding grower behaviors, seed dealer dynamics, and the importance of educational efforts and incentives to non-Bt refuge.

Risk Management on Sustainable Corn Supply Chains: Evidence from Central Java, Indonesia

This study aims to assess the risks involved in sustainable corn supply chains in Central Java, Indonesia, and minimize them. To identify risk events and agents in the sustainability aspect, the House of Risk (HOR) approach was used, starting with mapping the activities of hybrid corn supply chain actors. Possible risks in the mixed corn supply chain were identified from related studies and validated by industry and academic experts. Twenty-two risk events and fifteen risk agents were identified from the findings. In the social dimension, there were five risk events and three risk agents; in the economic dimension, there were seven risk agents and fourteen risk events; and in the environmental dimension, there were three risk events and five risk agents. In HOR phase I, labor negligence (A5) has the lowest Aggregate Risk Priority (ARP) value, while high production cost (A14) is the risk agent with the highest ARP value. Fifteen mitigation solutions were also proposed in HOR phase II. Nine mitigation technique steps were selected from the recommended solutions based on effectiveness to difficulty (ETD) scores to prevent risks. The highest priority risk mitigation technique is to find another raw material supplier (PA6).

The Corn Chronicles: Knowing Corn’s Past Helps Next Season’s Hybrid Selection

AbstractToday, 90 million acres are planted in corn in the U.S., producing an average of roughly 15 billion bushels per year (https://bit.ly/3SE9T8F). Corn yields have increased tremendously since the 30 bu/ac days of the 1930s when Reid’s Yellow Dent was just facing competition from the first batches of hybrid corn. This article looks at the development and improvement of hybrid corn over the years and provides tips for selecting next season’s hybrids. Earn 1 CEU in Crop Management by reading this article and taking the quiz at https://web.sciencesocieties.org/Learning‐Center/Courses.

Estimating Combining Ability among Inbred Lines for Hybrid corn Breeding in Corn

Estimating Combining Ability among Inbred Lines for Hybrid corn Breeding in Corn

Development of heterotic hybrids of sweet corn for green ear yield and other component traits

Forty two experimental hybrids generated through full diallel mating were evaluated in Randomized Block Design during kharif 2019 to study the magnitude of heterosis in sweet corn. Mid-parent heterosis ranged from -21 to 258 for DEW; -25 to 2 for GFW; 3 to 229 for GEY and standard heterosis ranged from 2.13 to 134.95 for DEW; 82.93 to 317.07 for GFW; -15.70 to 68.40 for GEY. Green ear yield exhibited positive significant correlation of mid-parent and commercial heterosis with NKPR, DEW and GFW in common, while no significant association between GEY and TSS was observed. The crosses KH1831 × SC Syn, SC Syn × SC Sel 2 and SC Sel 2 × SC Syn manifested highest mid-parent heterosis for de-husked ear weight, green ear yield and green fodder weight thus utilizing these hybrids in breeding programmes will serve for dual purpose of yield with fodder. Bangladesh J. Bot. 52(4): 999-1005, 2023 (December)

استجابة الذرة الحلوة للأسمدة الحيوية البكتيرية والرش بالمغذيات المعدنية

This study was aimed to investigate response of two sweet corn hybrids to bacterial biofertilizers and spraying with Mg+2 and Ca+2 and their impact on the Yield during Spring season 2022, CASH seeds (H1) and ROI SOLEIL seeds (H2) were planted in pots, when they reached 2-3 leaves treated with four treatments which included without biofertilizer (B0), with Azospirillum brasilense (B1) with Pseudomonas fluorescens (B2) and the interaction with Azospirillum brasilense and Pseudomonas fluorescens (B3) then transferrd to the field, and sprayed the seedling after 20 and 30 days of seedling with three concentrations which included control, without spraying (N0), spraying with Mg++ and Ca++ with concentration of 25 mg L-1 (N1) and 50 mg L-1 each elements (N2), The experiment was carried out according to RCBD with in split plot arrangement. The results showed that hybrid H2, the treatment of bacterial biofertilizers B3 and the foliar spraying of Magnesium and Calcium N2 had significant effect in all studied traits. H2B3N1 had significant effect in plant height and the number of leaves, H2B3N2 had significant effect in leaf area and leaf area index and plant dry weight, H2B1N2 had significant effect in total chlorophyll concentration in leaves, It was found that the study factors and their interactions had a role in increasing the vegetative growth indicators of the sweet corn hybrids.

Эффективность биопрепаратов при выращивании сахарной кукурузы

In our country, vegetable sweet corn is grown mainly in the Krasnodar and Stavropol territories and the Rostov region; it is also cultivated in the Black Earth Region and in more northern regions, but in smaller volumes. Sweet corn is a relatively young subspecies that arose as a mutant between dentifrice and flint corn. Due to its biochemical characteristics, it is a very susceptible crop and is more damaged by pests and diseases compared to the usual one. A further increase in corn grain production is unthinkable without the widespread and comprehensive use of the latest scientific achievements, where the leading role undoubtedly belongs to new varieties and cultivation technologies. In the climatic conditions of the Rostov region, the biological characteristics of 4 hybrids of vegetable corn were studied: Early Golden F1, Sweet Nugget F1, Caramello F1 and Noa F1 and resource-saving technologies with the basics of biologization and greening of agriculture. Research has established that, on average, over the years of research, a high yield of cobs was obtained by the hybrids Caramello F1 - 14.42 t/ha and Noa F1 - 15.53 t/ha. Treatment of vegetative vegetable corn plants with biological preparations Albit and Rauactiv provided a significant increase in the yield of all studied hybrids. Keywords: HYBRID, ADAPTATION, YIELD, LEAF AREA, SEED GERMINATION, COB KERNEL CONTENT

Light partitioning strategies impact relative fitness of weeds and cover crops when drill-interseeding in corn

AbstractDrill-interseeding cover crops into corn (Zea mays L.) is an emerging establishment method in northern U.S. production regions. However, cover crop performance in interseeded systems remains variable, and creating environments that are conducive to cover crop but not weed growth is challenging. Cultural practices that partition resources between corn and interseeded cover crops have potential to improve performance if weeds are adequately managed. This study evaluated interactions among corn hybrids differing in leaf architecture (upright, pendulum), corn row spacing (76 cm, 152 cm), and interseeding timing (V3, V6) on light transmittance, relative fitness of cover crop species (cereal rye [Secale cereale L.], annual ryegrass (Lolium multiflorum Lam), red clover [Trifolium pratense L.]) and weeds, and corn grain yield at three U.S. Northeast locations. Results showed that light transmittance through the corn canopy was greater in 152-cm row spacing compared with 76-cm row spacing at the V6 growth stage, with the magnitude of difference increasing at the V10 corn growth stage. Corn hybrids had a marginal effect on light transmittance. The effect of row spacing and interseeding timing on fall cover crop biomass varied across cover crop species and locations. In 76-cm rows, interseeding earlier (V3) increased cover crop biomass production. The relative fitness of cover crops was greater than that of weeds in each combination of cultural practices that included narrow spacing (76 cm), whereas the relative fitness of weeds was greater than that of cover crops when interseeding in wide rows (152 cm). The effect of row spacing on corn yield varied among locations, with higher yields observed in 76-cm row spacing compared with 152-cm at two of three locations. Our results show that interseeding early (V3) on 76-cm row spacing can balance cover crop and corn production management goals, while placing cover crops at a relative fitness advantage over weeds.