Effects of hybrids, population densities, fertilization and irrigation on grain corn (Zea mays L.) in Quebec

1992 ◽  
Vol 72 (4) ◽  
pp. 1163-1170 ◽  
Author(s):  
B. C. Liang ◽  
A. F. MacKenzie ◽  
M. Remillard
Keyword(s):  
Zea Mays ◽  
Population Density ◽  
Management Practices ◽  
Zea Mays L ◽  
Plant Population ◽  
Population Densities ◽  
Clay Loam Soil ◽  
Eastern Canada ◽  
Corn Production ◽  
Loam Soil

The increase in area for corn production in eastern Canada has stimulated the search for improvements in corn management practices to obtain higher yields. The purpose of this study was to investigate the effects of maize (Zea mays L.) hybrids, plant population density, rates of fertilization and irrigation on grain yield. A field experiment was conducted on a Chicot sandy clay loam soil in Quebec from 1984 to 1986. Corn attained grain yields of 10.9–15.2 Mg ha−1. These yields were attained only when all management inputs were at optimum levels. No single hybrid was superior over the 3-yr-period. High plant population densities, if not accompanied by other inputs, decreased yields. In moist, cooler years, effects of management factors were reduced, and only high plant population densities seemed to increase production. High rates of fertilization increased yields only when other management levels were high.Key words: Population density, irrigation, fertilization, hybrid, Zea mays, grain

Effect The Treatments of Biofertilizer and Mineral Fertilizer on Content of N P K of Soil Cultivated With Crop Corn (Zea Mays L).

2019 ◽  
Vol 9 (2) ◽  
pp. 247-256
Author(s):  
Mohammed Aajmi Salman ◽  
Jawad A. Kamal Al-Shibani
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Mineral Fertilizer ◽  
Silty Clay ◽  
Clay Loam ◽  
Potassium Fertilizer ◽  
Clay Loam Soil ◽  
Silty Clay Loam ◽  
Fall Season ◽  
Loam Soil

Beneficial microorganisms play a key role in the availability of ions minerals in the soil and use Randomized Complete Block Desing ( R.C.B.D ). The objective of this paper to the study effect of the of biofertilizer and miniral treatments on availability of NPK for crop corn zea mays L.Two types of biofertilizer are Bacterial Bacillus subtilis and Fungal Trichoderma harianum. Three levels of potassium fertilizer are (2.9533, 0.4000 and 2.9533). A field experiment in fall season of 2018 Has been conducted in silty clay loam soil. The experimental Results indicated that Bacillus and Trichoderma inoculation separately or together Have made a significant effect to increase in the availability of N P K in the soil compare to other treatments. The grain yield is where (2.9533, 0.4000 and 2.9533) of bacterial and fungal bio-fertilizer and potassium fertilizers respectively as compared to the control.

SEASONAL DRY-WEIGHT DISTRIBUTION OF SINGLE-STALKED AND MULTI-TILLERED CORN HYBRIDS GROWN AT THREE POPULATION DENSITIES IN SOUTHERN ALBERTA

1977 ◽  
Vol 57 (4) ◽  
pp. 1041-1047 ◽  
Author(s):  
D. J. MAJOR
Keyword(s):  
Zea Mays ◽  
Population Density ◽  
Weight Distribution ◽  
Zea Mays L ◽  
Dry Weight ◽  
Population Densities ◽  
Corn Hybrids ◽  
Southern Alberta

Dry weights of component parts of the main stalk and tillers of corn (Zea mays L.) were determined for a multi-tillered hybrid, Stewart Multi G, and single-stalked hybrids, United UH 106 and Warwick SL 209, in 1974 and 1975. The hybrids were grown under irrigation at 35, 70, and 115 thousand plants/ha at Lethbridge, Alberta. Intrarow spacings equalled interrow spacings. At the end of the season, the multi-tillered hybrid had higher total yields at 35,000 plants/ha man single-stalked hybrids because of its large tillers but the single-stalked hybrids had a higher grain content than the multi-tillered hybrid. Tillers developed early in the season, but the number of tillers per plant decreased after reaching a maximum in late July, presumably due to population-density stresses. Decreases in tiller and stalk dry weight at the end of the season may have been due to translocation of carbohydrates to the main stalk and kernels.

CORN ROOT DISTRIBUTION IN RELATION TO LONG-TERM ROTATIONS ON A POORLY DRAINED CLAY LOAM SOIL

1987 ◽  
Vol 67 (1) ◽  
pp. 231-234 ◽  
Author(s):  
J. A. STONE ◽  
J. A. McKEAGUE ◽  
R. PROTZ
Keyword(s):  
Zea Mays ◽  
Root Distribution ◽  
Zea Mays L ◽  
Clay Loam ◽  
Clay Loam Soil ◽  
Corn Root ◽  
Loam Soil

Corn (Zea mays L.) root distribution was observed in monoculture and corn-legume rotation plots established in 1956 on Brookston clay loam soil. The results support the hypothesis that a more extensive corn root distribution is promoted by a corn-legume rotation. There was no indication of a root-restricting zone in either rotation.Key words: Monoculture corn, alfalfa rotation

Effect of water salinity and irrigation regime on maize (Zea mays L.) cultivated on clay loam soil and irrigated by furrow in Southern Italy

2019 ◽  
Vol 222 ◽  
pp. 118-124 ◽  
Author(s):  
Giovanna Cucci ◽  
Giovanni Lacolla ◽  
Francesca Boari ◽  
Mario Alberto Mastro ◽  
Vito Cantore
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Southern Italy ◽  
Water Salinity ◽  
Clay Loam ◽  
Irrigation Regime ◽  
Clay Loam Soil ◽  
Effect Of Water ◽  
Loam Soil

HERBICIDES FOR FORAGE CORN NO-TILL SEEDED INTO CEREAL STUBBLE

1983 ◽  
Vol 63 (1) ◽  
pp. 235-241 ◽  
Author(s):  
J. A. IVANY ◽  
J. R. ENMAN
Keyword(s):  
Zea Mays ◽  
Weed Control ◽  
Prince Edward Island ◽  
Zea Mays L ◽  
Crop Yields ◽  
Taraxacum Officinale ◽  
Plant Population ◽  
No Till ◽  
Herbicide Treatment ◽  
Forage Yields

Forage corn (Zea mays L.) was grown successfully in Prince Edward Island by no-till planting the corn into standing cereal stubble 15–20 cm tall using a Buffalo no-till seeder. Planting with the slot-type shoe in a preliminary experiment in 1978 gave better forage yields than planting with a slice-type shoe mainly because of better plant population achieved. Subsequent experiments in 1979–1981 using the slot-type shoe to no-till plant corn in cereal stubble gave good forage yields when adequate weed control was provided with herbicide treatment. Best control of quackgrass (Agropyron repens L. Beauv.) and dandelion (Taraxacum officinale Weber) and crop yields was achieved with glyphosate + atrazine (1.5 + 2.5 kg a.i./ha) or amitrole + atrazine (3.4 + 2.5 kg a.i./ha) applied preemergence after seeding corn and before corn emergence. Control of quack grass and dandelion with glyphosate or amitrole used alone ranged from 71–80%, but paraquat alone did not provide any weed control. Addition of atrazine to paraquat, glyphosate, or amitrole gave improved control of quackgrass and dandelion and higher forage corn yields. Addition of 2.5 kg a.i./ha atrazine gave better results than use of 1.0 kg a.i./ha of atrazine.Key words: Forage corn, no-till seeding, glyphosate, atrazine, aminotriazole, paraquat

scholarly journals Effects of population density on cauliflower crop (Brassica oleracea L. var. botrytis)

1981 ◽  
Vol 38 (1) ◽  
pp. 1-10
Author(s):  
Keigo Minami ◽  
Ricardo Victoria Fº
Keyword(s):  
Population Density ◽  
Brassica Oleracea ◽  
Plant Population ◽  
Population Densities ◽  
Plant Population Density ◽  
Brassica Oleracea L ◽  
Quality Weight

An experiment was carried out to study the effects of the following population densities cauliflowers (plants per ha): 20,833 (0.60 m x 0.80 m), 25,641 (0.60 m x 0.65 m), ....37.037 (0.60 m x 0.45 m) , 55.555 (.0.60 m x 0.30 m), and 111,111 (0,60 m x 0,15 m) ; variety Snow ball. It was concluded that the effects of plant population density are greater on curd quality (weight and size) than on production per ha. The best plant population density to produce cauliflowers curd for Brazil market is from 20,000 to 25,000 plants/ha while for mini-curd is above 55,000 plants/ha.

Plant population and hybrid considerations for dryland corn production on drought-susceptible soils

1995 ◽  
Vol 75 (1) ◽  
pp. 87-91 ◽  
Author(s):  
L. C. Miller ◽  
B. L. Vasilas ◽  
R. W. Taylor ◽  
T. A. Evans ◽  
C. M. Gempesaw
Keyword(s):  
Zea Mays ◽  
Target Population ◽  
Plant Population ◽  
Seasonal Precipitation ◽  
Seeding Rate ◽  
Corn Production ◽  
Difficult Decision ◽  
Growing Seasons ◽  
Key Words Maize ◽  
Short Season

Selection of a target population for dryland corn (Zea mays) production on drought-susceptible soils is a difficult decision, as a stand appropriate for drought conditions may not fully utilize the environment during a non-stress year. One possible management strategy is to use a low seeding rate and hybrids with ear characteristics that promote yield stability over a range of environments and plant populations. To evaluate this strategy, a 2-yr field study was conducted on a Rumford loamy sand. The performance of four hybrids — 1) full season, flexible ear; 2) short season, flexible ear; 3) full season, prolific; and 4) short season, prolific — was evaluated at four populations — 29 600, 39 500, 49 400, and 59 300 plants ha−1 — in two different growing seasons. Seasonal precipitation in 1988 was 14 cm below the average of 50 cm; 1989 seasonal precipitation was 37 cm above average. Average grain yields were 40% lower in 1988 than in 1989, and the yield loss was due primarily to a decrease in ear size. All hybrids demonstrated the ability to compensate for changes in population in 1988. Averaged across years, highest yields were produced with the two highest populations. The full-season, prolific hybrid was the most productive at every population. Key words: Maize, Zea mays, genotype × environment interactions, plant population, prolificacy, ear size

Production economics of rabi maize (Zea mays. L.) under different weed management practices and residual soil fertility conditions

2021 ◽  
Vol 16 (2) ◽  
pp. 215-218
Author(s):  
Banashri Lodh ◽  
S.N. Jena ◽  
R.K. Paikaray ◽  
Manoranjan Satapathy ◽  
Bishnupriya Patra ◽  
...  
Keyword(s):  
Zea Mays ◽  
Soil Fertility ◽  
Weed Management ◽  
Management Practices ◽  
Zea Mays L ◽  
Production Economics ◽  
Residual Soil
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