Nitrogen levels and age at harvest and their effects on the nutritive value and fermentative characteristics of corn (Zea mays L.)

2021 ◽  
Vol 101 (1) ◽  
pp. 79-90
Author(s):  
Ricardo Prieto-Prieto ◽  
Elide Valencia ◽  
Rebecca Tirado-Corbalá
Keyword(s):  
Zea Mays ◽  
Nutritive Value ◽  
Zea Mays L ◽  
Application Rate ◽  
N Fertilization ◽  
Neutral Detergent Fiber ◽  
N Application ◽  
Nitrogen Levels ◽  
Application Rates ◽  
Entire Plant

The experiment consisted of two dates of planting [in September (D1) and February (D2)] of maize (Zea mays L.) DKC 67-60, to evaluate the effect of four N fertilization levels (0, 56, 112 and 185 kg/ha) and three ages at harvest [70, 77 and 84 days after planting (DAP)] on dry matter yield (DMY) of the leaves, stem, ear and of the entire plant; and as indicators of nutritive value [crude protein (CP) and neutral detergent fiber (NDF)] of harvested material prior to ensiling. In both plantings, the levels of N affected (P<0.05) DMY of leaves, stems, ears and entire plant, exhibiting both a linear and a quadratic response, and suggesting that the optimum N application rate is between 112 and 185 kg/ha. Age at harvest date affected (P<0.05) DMY of stems, ears and entire plant, but not that of the leaves. Greater DMY was observed at 84 DAP for all components. The CP concentration was greater in the forage of the first planting (D1). Increasing N application rates increased CP, but had no effect on NDF concentration. Age at harvest had no effect on CP, but progressively increased NDF. Both pH and organic acid concentrations in the silages were similar with the four N levels; all of the silages showed good fermentation characteristics.

NITROGEN FERTILIZATION OF LAND CONTINUOUSLY CROPPED TO CORN (Zea mays L.)

1983 ◽  
Vol 63 (3) ◽  
pp. 547-556 ◽  
Author(s):  
JOHN E. RICHARDS ◽  
S. C. SHEPPARD ◽  
T. E. BATES
Keyword(s):  
Zea Mays ◽  
Regression Analysis ◽  
Nitrogen Fertilization ◽  
Zea Mays L ◽  
Continuous Production ◽  
Field Trials ◽  
N Fertilization ◽  
Grain Production ◽  
N Application ◽  
Rate Interaction

Three field trials were conducted to determine if and how response of corn (Zea mays L.) to applied N changes during continuous production. Nitrogen was broadcast at rates of 0, 56, 112, 168, 224 and 336 kg/ha each year for 10 yr. Rates of N in excess of 168 kg/ha significantly reduced emergence at the Fox site; no effect occurred elsewhere. Applied N had no effect upon seedling weight, decreased the interval from seeding to silking, and increased grain and stover yields at all sites. The most profitable rates of N for grain production throughout the study were 85 and 110 kg/ha at the Conestogo and Fox sites, respectively. At the Chinguacousy site, there was a significant year by N rate interaction with grain yield declining by 5600 kg/ha over 10 yr in the 0-kg-N/ha treatment. A model developed by multiple regression analysis (R2 = 0.71) for this site predicted that the most profitable rates of N application were 38, 178, and 213 kg/ha in years 1, 5, and 10, respectively. Applied N decreased ear moisture content at harvest and increased lodging at all sites. Key words: Zea mays L., N fertilization, year by N interaction

Influences of irrigation and N fertilization on maize (Zea mays L.) properties

2007 ◽  
Vol 35 (2) ◽  
pp. 933-936 ◽  
Author(s):  
Hrvoje Plavsic ◽  
Marko Josipovic ◽  
Luka Andric ◽  
Antun Jambrovic ◽  
Jasna Sostaric
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
N Fertilization

scholarly journals Combining Ability and Heterosis of Algerian Saharan Maize Populations (Zea mays L.) for Tolerance to No-Nitrogen Fertilization and Drought

Agronomy ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 492
Author(s):  
Meriem Riache ◽  
Pedro Revilla ◽  
Oula Maafi ◽  
Rosa Ana Malvar ◽  
Abderahmane Djemel
Keyword(s):  
Zea Mays ◽  
Stress Tolerance ◽  
Nitrogen Fertilization ◽  
Recurrent Selection ◽  
Zea Mays L ◽  
Base Material ◽  
N Fertilization ◽  
Nitrogen Stress ◽  
Reciprocal Recurrent Selection ◽  
Maize Populations

Drought and low nitrogen are major stresses for maize (Zea mays L.), and maize populations from the Sahara Desert are potential sources of stress tolerance. The objectives were to assess the tolerance and varietal and heterosis effects of Algerian populations under no-nitrogen fertilization and water stress. A diallel among six Algerian maize population was evaluated under drought (300 mm irrigation) vs. control (600 mm) and no-nitrogen fertilization vs. 120 kh ha−1 N fertilization. Genotypes showed significant differences and genetic effects for water- and nitrogen-stress tolerance. We propose a reciprocal recurrent selection to take advantage of additive and non-additive effects, using AOR and IGS, since they showed good performance in optimum and stress conditions, for improving yield heterosis for AOR × IGS. Negative effects are not expected on plant height, anthesis–silking interval or early vigor. These populations and BAH could be sources of inbred lines tolerant to drought and no-nitrogen fertilization. There was no relationship between origin and genetic group and stress tolerance per se or as parents of tolerant crosses. These populations and crosses could be used as base material among Algerian populations, for breeding programs focusing on tolerance to water or nitrogen stress.

scholarly journals Foliar Zn Spraying Simultaneously Improved Concentrations and Bioavailability of Zn and Fe in Maize Grains Irrespective of Foliar Sucrose Supply

Agronomy ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 386 ◽  
Author(s):  
Haiyong Xia ◽  
Weilin Kong ◽  
Lan Wang ◽  
Yanhui Xue ◽  
Wenlong Liu ◽  
...  
Keyword(s):  
Agronomic Traits ◽  
Application Rate ◽  
Deionized Water ◽  
Control Treatment ◽  
Agricultural Practice ◽  
N Application ◽  
Application Rates ◽  
N Application Rate ◽  
Maize Grain ◽  
Sucrose Supply

Zinc (Zn) deficiency is a global nutritional problem that is reduced through agronomic biofortification. In the current study, the effects of foliar spraying of exogenous ZnSO4·7H2O (0.2% in Quzhou and 0.3% in Licheng, w/v) and/or sucrose (10.0%, w/v) on maize (Zea mays L.) agronomic traits; concentrations of Zn, iron (Fe), calcium (Ca), total phosphorus (P), phytic acid (PA) P, carbon (C), and nitrogen (N); C/N ratios; and Zn and Fe bioavailability (as evaluated by molar ratios of PA/Zn, PA × Ca/Zn, PA/Fe and PA × Ca/Fe) in maize grains were studied under field conditions for two years at two experimental locations. The results confirmed that there were no significant differences in maize agronomic traits following the various foliar treatments. Compared with the control treatment of foliar spraying with deionized water, foliar applications of Zn alone or combined with sucrose significantly increased maize grain Zn concentrations by 29.2–58.3% in Quzhou (from 18.4–19.9 to 25.2–29.6 mg/kg) and by 39.8–47.8% in Licheng (from 24.9 to 34.8–36.8 mg/kg), as well as its bioavailability. No significant differences were found between the foliar spraying of deionized water and sucrose, and between Zn-only and “sucrose + Zn” at each N application rate and across different N application rates and experimental sites. Similar results were observed for maize grain Fe concentrations and bioavailability, but the Fe concentration increased to a smaller extent than Zn. Foliar Zn spraying alone or with sucrose increased maize grain Fe concentrations by 4.7–28.4% in Quzhou (from 13.4–17.1 to 15.2–18.5 mg/kg) and by 15.4–25.0% in Licheng (from 24.0 to 27.7–30.0 mg/kg). Iron concentrations were significantly and positively correlated with Zn at each N application rate and across different N application rates and experimental locations, indicating that foliar Zn spraying facilitated the transport of endogenous Fe to maize grains. Therefore, foliar Zn spraying increased the Zn concentration and bioavailability in maize grains irrespective of foliar sucrose supply while also improving Fe concentrations and bioavailability to some extent. This is a promising agricultural practice for simultaneous Zn and Fe biofortification in maize grains, i.e., “killing two birds with one stone”.

scholarly journals Monoculture Maize (Zea mays L.) Cropped Under Conventional Tillage, No-tillage and N Fertilization: (II) Fumonisin Incidence on Kernels

2009 ◽  
Vol 4 (3) ◽  
pp. 69 ◽  
Author(s):  
Adriano Marocco ◽  
Vincenzo Tabaglio ◽  
Amedeo Pietri ◽  
Carolina Gavazzi
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Conventional Tillage ◽  
N Fertilization ◽  
No Tillage

Response of fodder maize to different levels of nitrogen undervarious planting methods

2016 ◽  
Author(s):  
Rupinder Kaur Jassal ◽  
Avtar Singh ◽  
J. S. Kang ◽  
Thakar Singh
Keyword(s):  
Zea Mays ◽  
Seed Yield ◽  
Zea Mays L ◽  
Conventional Tillage ◽  
Zero Tillage ◽  
Nitrogen Levels ◽  
Planting Methods ◽  
Stover Yield ◽  
Planting Method ◽  
Different Levels

The experiment was conducted to find out the planting method and nitrogen level for enhancing the seed yield of fodder maize (Zea mays L.). The treatment comprised of three planting methods as zero tillage (ZT), conventional tillage (CT) and bed planting (BP) and four nitrogen levels (0, 100, 125 and 150 kg N/ha). Successive increase of 25kg N/ ha has significantly increased the seed and stover yield of maize with which significantly higher values of plant height, stover yield and shelling percentage was obtained.

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