Corn yield (Zea mays L.) improves with the use of eucalyptus biochar

A study was conducted over a 3-yr period (2003, 2004, and 2005) to evaluate the effect of reduced herbicide rates - 20, 40, 60, 80, and 100% of the manufacturer’s recommended rate (MRR) - on weed biomass reduction, environmental impact (EI), yield, and profitability of corn (Zea mays L.) in Ontario. The herbicide rate required to provide 95% biomass reduction of velvetleaf (Abutilon theophrasti Medic.), redroot pigweed (Amaranthus retroflexus L.), common ragweed (Ambrosia artemisiifolia L.), common lambsquarters (Chenopodium album L.), and annual grasses was 92, 30, 41, 28, and 83% of the MRR for isoxaflutole plus atrazine, >200, 119, 23, 23, and 117% of the MRR for dimethenamid plus dicamba/atrazine, 141, 72, 46, 45, and >200% of the MRR for glufosinate plus atrazine, and 81, 29, 18, 24, and 88% of the MRR for nicosulfuron/rimsulfuron plus dicamba/diflufenzopyr, respectively. The herbicide rate required to provide 95% of weed-free corn yield was 61, 22, 130, and 11% of the MRR for isoxaflutole plus atrazine, dimethenamid plus dicamba/atrazine, glufosinate plus atrazine, and nicosulfuron/rimsulfuron plus dicamba/diflufenzopyr, respectively. Nicosulfuron/rimsulfuron plus dicamba/diflufenzopyr had the lowest EI. The results of profitability analysis suggested that the MRR rates do not tend to maximize profit margins. In most cases, there were no significant differences in profit margins for treatments with 40, 60, 80, and 100% of the MRR. Key words: Atrazine, dicamba, diflufenzopyr, dimethenamid, glufosinate, nicosulfuron, rimsulfuron, Zea mays L.

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Postemergence control of quackgrass [Elytrigia repens (L) Nevski] with DPX-79406 in corn (Zea mays L)

Canadian Journal of Plant Science ◽

10.4141/cjps94-072 ◽

1994 ◽

Vol 74 (2) ◽

pp. 375-381 ◽

Cited By ~ 3

Author(s):

M. E. Reidy ◽

C. J. Swanton

Keyword(s):

Zea Mays ◽

Key Words ◽

Significant Interaction ◽

Growth Stage ◽

Field Experiments ◽

Zea Mays L ◽

Optimum Dose ◽

Corn Yield ◽

Leaf Stage ◽

Elytrigia Repens

Laboratory and field experiments were established to determine the optimum dose and timing of postemergence applications of DPX-79406 for quackgrass control. Four node quackgrass rhizome fragments from each biotype were grown under controlled conditions. At the three-to-four-leaf stage, quackgrass plants were sprayed with DPX-79406 and evaluated for control. A significant response of quackgrass biotypes to DPX-79406 was evident only at lower doses. In the field, quackgrass was effectively controlled by all doses of DPX-79406. Significant growth-stage effects were observed for quackgrass shoot and rhizome dry weights in the year of application and in the year following application. There was a significant interaction between year and growth stage. In 1990, quackgrass biomass was greater when DPX-79406 was applied at the two-to-three-leaf stage of quackgrass than at the four-to-five-leaf stage. In 1991, however, the opposite occurred. Within a growth stage, the 6.25 g ha−1 dose was as effective for controlling quackgrass as 18.5 g ha−1, in both years of the study. In 1991, significant decreases in corn yield were observed for DPX-79406 doses of > 12.5 g ha−1 applied at the four-to-five-leaf stage of quackgrass. For all the variables studied, DPX-79406 doses of 6.25–12.5 g ha−1 resulted in consistent control of quackgrass. Key words: DPX-79406, nicosulfuron, rimsulfuron, quackgrass, Elytrigia repens, corn, Zea mays

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Effect of Different Schedules of Baby Corn (Zea mays L.) Harvests on Baby Corn Yield, Grain Yield, and Economic Return

Journal of the Kentucky Academy of Science ◽

10.3101/1098-7096-71.1.59 ◽

2010 ◽

Vol 71 (1 and 2) ◽

pp. 59-66 ◽

Cited By ~ 2

Author(s):

Zheng Wang ◽

Martin Stone ◽

Elmer Gray

Keyword(s):

Zea Mays ◽

Grain Yield ◽

Zea Mays L ◽

Corn Yield ◽

Economic Return

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A FIELD COMPARISON STUDY OF AMMONIUM PHOSPHATES AND SUPERPHOSPHATE–UREA OR AMMONIUM NITRATE ON CORN (ZEA MAYS L.) GROWTH IN FIVE QUEBEC SOILS

Canadian Journal of Soil Science ◽

10.4141/cjss78-026 ◽

1978 ◽

Vol 58 (2) ◽

pp. 221-228 ◽

Cited By ~ 4

Author(s):

J. R. OKALEBO ◽

A. F. MacKENZIE

Keyword(s):

Zea Mays ◽

Ammonium Nitrate ◽

Zea Mays L ◽

Leaf Tissue ◽

Soil Types ◽

Corn Yield ◽

Comparison Study ◽

P Content ◽

Leaf P

Effects of mono-, diammonium, and superphosphate with added urea or ammonium nitrate on corn (Zea mays L.) growth were studied in the field in 1971 and 1972. At the rate of 100 kg P2O5/ha, none of the carriers affected emergence of seedlings in five Quebec soils. Leaf P content at silking time was of little benefit in predicting P status of the plants, or in differentiating among the carriers. Phosphorous applications gave significant corn yield increases, with carriers performing alike when averaged over all sites. However, some yield differences among carriers occurred on some soil types and seasons. These carrier differences were not consistent and remain to be clarified. The ammonium phosphates compared with the check generally hastened maturity but reduced potassium levels in leaf tissue of corn.

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INEXPENSIVE NO-TILL ATTACHMENT FOR A TWO-ROW CORN PLANTER

Canadian Journal of Plant Science ◽

10.4141/cjps86-096 ◽

1986 ◽

Vol 66 (3) ◽

pp. 785-788 ◽

Cited By ~ 2

Author(s):

R. P. WHITE ◽

J. A. IVANY ◽

J. R. ENMAN

Keyword(s):

Zea Mays ◽

Zea Mays L ◽

Steel Frame ◽

Corn Yield ◽

No Till

A steel frame supporting two fluted coulters, and mounted between a tractor and a two-row corn planter, successfully planted no-till corn (Zea mays L.) in cereal and corn stubble. No significant differences occurred in corn yield or maturity between the no-till and regularly tilled corn in three years. Construction details are presented.Key words: No-till corn, corn planter modifications, stubble planting

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Studies on combining ability and gene action for yield and quality traits in Baby corn (Zea mays L.)

Journal of Applied and Natural Science ◽

10.31018/jans.v8i3.965 ◽

2016 ◽

Vol 8 (3) ◽

pp. 1349-1355

Author(s):

Hemlata Kumari ◽

Nikhil Kumar ◽

Mukesh Kumar ◽

Rashmi Kumari

Keyword(s):

Zea Mays ◽

Combining Ability ◽

Zea Mays L ◽

Gene Action ◽

Block Design ◽

Corn Yield ◽

Quality Traits ◽

Yield And Quality ◽

Diallel Mating Design ◽

Fodder Yield

An investigation was carried out to assess the combining ability and nature of gene action in baby corn (Zea mays L.) genotypes, by making crosses of eight inbred lines namely, HKI 3209, SML 1, EC 595979, CM 128, VQL 1, G 18 seq C5 F 76-2-2-1-1-2-BBB, HKI 209, in diallel mating design (without reciprocal crosses) by following Griffing Modelâ€“I and Methodâ€“II during rabi season 2013-14 at the experimental farm of BAC, Sabour, Bhagalpur (Bihar). The crosses were evaluated in a randomized complete block design (RCBD) to assess the combining ability and nature of gene action. Based on general combining ability, parents CM 128 and VQL 1 were best parent forbreeding programme for yield and quality improvement. The specific combining ability also indicates that hybrid CM128 x VQL1 was best specific combiner for baby corn yield (4.11q/ha), fodder yield (50.91q/ha) as well as for better quality. The crosses CM 128 x HKI 209 recorded the high mean (7.35%) and SCA effects (2.57 ÂºBrix) for quality traits. The gene action analysis also revealed preponderance of non-additive gene action for yield and its contributing characters.

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Serapan Hara dan Hasil Jagung (Zea mays L.) Akibat Pemberian Berbagai Jenis dan Metode Perhitungan Kebutuhan Kapur pada Ultisol

Jurnal Ilmiah Mahasiswa Pertanian ◽

10.17969/jimfp.v3i3.8284 ◽

2018 ◽

Vol 3 (3) ◽

pp. 249-259

Author(s):

Arief Maulana ◽

Zuraida Zuraida ◽

Muyassir Muyassir

Keyword(s):

Zea Mays ◽

Nutrient Uptake ◽

Calculation Method ◽

Zea Mays L ◽

Block Design ◽

Treatment Result ◽

Corn Yield ◽

Calculation Methods ◽

Method Factor ◽

Randomized Block Design

Abstrak. Penelitian ini bertujuan untuk melihat metode kebutuhan kapur dan jenis kapur yang efektif terhadap serapan hara dan hasil jagung (Zea mays L.) pada Ultisol dengan menggunakan Rancangan Acak Kelompok (RAK) Faktorial dengan 9 perlakuan dan ulangan sebanyak 3 kali sehingga didapatkan 27 satuan unit percobaan. Faktor yang diteliti adalah metode perhitungan kebutuhan kapur sebagai faktor 1 dan jenis kapur sebagai faktor 2. Faktor 1 metode perhitungan kebutuhan kapur terdiri dari 3 taraf yaitu : metode Corey (M1), metode berdasarkan Aldd (M2), dan metode Knooti (M3). Faktor 2 adalah jenis kapur yang terdiri dari 3 taraf yaitu : dolomit (K1), kalsit (K2), dan gypsum (K3). Untuk melihat perbedaan hasil perlakuan digunakan uji F dan dilanjutkan dengan uji (BNT0,05). Hasil penelitian didapatkan serapan hara dan komponen hasil jagung yang bervariasi secara nyata akibat interaksi metode perhitungan kebutuhan kapur. Gypsum yang dihitung dengan metode Corey menghasilkan kadar dan serapan tanaman jagung yang lebih baik dari jenis kapur yang dihitung dengan metode perhitungan lainnya, demikian juga halnya dengan komponen hasil jagung yang ditanam pada Ultisol.Nutrient Absorption and Corn Result (Zea Mays L.) Due To The Growth of Types And Calculation Methods on UltisolAbstract. The study aims to see the lime and lime lime requirement method that was effective against nutrient uptake and corn yield (Zea mays L.) on Ultisol using Factorial Randomized Block Design (RAK) with 9 treatments and replicates 3 times so that 27 units of experiments. Factor of research is calculation method of lime requirement as factor 1 and lime type as factor 2. Factor 1 calculation method of lime requirement consists of 3 levels that is: Corey method (M1), method based on Aldd (M2), and Knooti (M3) method. Factor 2 is a type of lime which consists of 3 levels, namely: dolomite (K1), calcite (K2), and gypsum (K3). To see difference between treatment result used F tests and continued with test (BNT0,05). The results showed nutrient uptake and corn yield components that varied significantly due to the interaction of calculation method of lime requirement. Gypsum calculated by Corey method yields better corn absorption rate and absorption of lime species calculated by other calculation methods, as well as corn components grown on Ultisol.

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EFFECTS OF QUACK GRASS COMPETITION ON SILAGE CORN YIELD

Canadian Journal of Plant Science ◽

10.4141/cjps78-079 ◽

1978 ◽

Vol 58 (2) ◽

pp. 539-542 ◽

Cited By ~ 6

Author(s):

J. A. IVANY

Keyword(s):

Zea Mays ◽

Zea Mays L ◽

Corn Yield ◽

Infestation Level ◽

Late Season ◽

Significant Yield ◽

Effect On Yield ◽

Heavy Infestation ◽

Agropyron Repens

Studies were conducted at Charlottetown, P.E.I., over 3 years to examine the effect of quack grass (Agropyron repens L. Beauv.) competition on silage corn (Zea mays L.) yield using the cultivar Pride R-102. Maintaining corn plots free from quack grass for 3 or 6 wk after emergence gave silage yields equal to plots kept weed-free all season at both light and heavy quack grass infestation levels. Quack grass competition from time of emergence of the crop resulted in significant yield reductions from 6 wk of competition at a light infestation level and from 3 wk of competition at a heavy infestation level. Weekly removal of quack grass all season or for 3 or 6 wk resulted in significant reduction in rhizome production at both levels of infestation. Delaying quack grass removal for 3, 6, and 10 wk after corn emergence resulted in more rhizome production except where control was delayed 3 wk. However, the late season control kept rhizome production below that of the no-control all-season treatment. Early control of quack grass was necessary for maximum silage yields. Quack grass which emerged later in the season had little effect on yield.

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USO DE CAMA AVIÁRIA NA PRODUÇÃO DE MILHO E QUALIDADE DA SILAGEM

Revista Brasileira de Milho e Sorgo ◽

10.18512/1980-6477/rbms.v16n3p373-387 ◽

2017 ◽

Vol 16 (3) ◽

pp. 373

Author(s):

SILVANE DE ALMEIDA CAMPOS ◽

ROGÉRIO DE PAULA LANA ◽

JOÃO CARLOS CARDOSO GALVÃO ◽

STELIANE PEREIRA COELHO ◽

EMERSON TROGELLO ◽

...

Keyword(s):

Zea Mays ◽

Dry Matter ◽

Zea Mays L ◽

Poultry Litter ◽

Poultry Manure ◽

Organic Fertilizers ◽

Corn Yield ◽

Dry Biomass ◽

Silage Quality

RESUMO - A cama aviária é rica em nutrientes, sobretudo em N, comparativamente a fertilizantes de origem orgânica comumente utilizados na agricultura. Além disso, os baixos custos e a alta oferta de cama aviária em várias regiões têm levado ao desenvolvimento de estudos para o seu aproveitamento como fertilizante. Objetivou-se avaliar o efeito da aplicação de doses de cama aviária, em cobertura, na produção de milho e na qualidade da silagem. O delineamento experimental foi de blocos casualizados, com seis tratamentos (0,0, 1,5; 3,0; 4,5; 6,0 e 7,5 t ha-1 de cama aviária curtida) e quatro repetições. Determinaram-se altura de planta e de espiga, diâmetro do colmo, prolificidade, peso de espiga, proporção de espigas na matéria verde, produtividade de matéria verde e seca de plantas. Após 65 dias de armazenamento, os silos foram abertos para determinação dos teores de matéria seca e de proteína bruta, perdas por gases e efluente, e perda total de matéria seca das silagens. As doses de cama aviária não afetaram as características agronômicas e avaliativas da silagem, exceto a produtividade de matéria verde e seca de plantas que responderam linearmente ao aumento das doses aplicadas. O maior incremento na produtividade de matéria verde e seca de plantas de milho ocorreu com a dose 7,5 t ha-1 de cama aviária, superando em 39,49% e 27,62%, respectivamente, o tratamento controle. A adubação orgânica com cama aviária não afetou a qualidade das silagens produzidas.Palavras-chave: adubação, resíduo orgânico, produtividade, parâmetros qualitativos, Zea mays L. USE OF POULTRY MANURE IN CORN YIELD AND SILAGE QUALITY ABSTRACT - Poultry manure is rich in nutrients, especially N, as compared with manure commonly used in agriculture. Moreover, the low costs of organic fertilizers compared with chemical fertilizers, the high offer of poultry manure in various regions has led to the development of studies for its use as fertilizer. The objective of this study was to evaluate the effect of doses of poultry litter, in coverage, in corn silage yield and silage quality. The experiment consisted of a randomized block design with six treatments (0.0, 1.5, 3.0, 4.5, 6.0 and 7.5 t ha-1 of tanned poultry litter) and four replications. The height of plant and ear, stem diameter, prolificacy, the ear weight, the proportion of ears in green matter, the productivity of green and dry matter of plants were determined. After 65 days of storage, the silos were opened to determine the dry biomass, crude protein, losses by gases and by effluent and loss total of dry biomass of silages. The poultry litter did not affect the agronomic characteristics and quality of silage, except the productivity of green and dry matter of plants that responded linearly to the increase of the doses applied. The highest increase in the productivity of green and dry matter of corn plants occurred with the 7.5 t ha-1 of poultry litter exceeding by 39.49% and 27.62%, respectively, the control treatment. The organic fertilization with poultry manure does not affect quality of the produced silage.Keywords: fertilization, organic waste, productivity, qualitative parameters, Zea mays L.

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