Nitrogen Fertilization and Population Density on Yield and Quality of Sweet Corn (Zea Mays L.). PDF Download
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Author: A.A. Ducanes
Publisher:
ISBN:
Category :
Languages : en
Pages : 95
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Book Description
The experiments was conducted at the Central Experiment Sation at UPLB from November 1983 to Febrary 1984 to evaluate the yield, quality and other agronomic characteristics of Thai DMR Super Sweet corn when grown at different levels and plant density, and harvested at various stages of maturity. A split-plot design was used with two nitrogen levels as main plots, two planting densities as subplots and four harvest dates as sub-sub plots. Each treatment was replicated three times. The results showed that increasing the nitrogen rate from 100 to 200 kg N/ha significantly increase yield of marketable e green corn. Mowever, days to silking, barreness, percentage lodged plants, plant height, ear length and diameter, weight of individual ears, number of marketable ears and total yield were not affected. Increasing the plant population from 53,333 to 88,932 plants/ha increased barreness, lodged plants, desirable green ears and total yield. However, stalk diameter, ear length and weight of marketable ears were decreased. Quality of sweet corn as scored was not significantly affected by rate of nitrogen applied and plant population density. These quality parameters appeared to be more dependent on stage of maturity when the corn ear is harvested for market. Though, ear diameter, weight of individual ear, yeild of marketable green ear and total green ear yield increased as maturity advances, tenderness ans sweerness declined markedly. Higher yield and better quality of procedure can be obtained from Thai DMR Super (...).
Author: A.A. Ducanes
Publisher:
ISBN:
Category :
Languages : en
Pages : 95
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Book Description
The experiments was conducted at the Central Experiment Sation at UPLB from November 1983 to Febrary 1984 to evaluate the yield, quality and other agronomic characteristics of Thai DMR Super Sweet corn when grown at different levels and plant density, and harvested at various stages of maturity. A split-plot design was used with two nitrogen levels as main plots, two planting densities as subplots and four harvest dates as sub-sub plots. Each treatment was replicated three times. The results showed that increasing the nitrogen rate from 100 to 200 kg N/ha significantly increase yield of marketable e green corn. Mowever, days to silking, barreness, percentage lodged plants, plant height, ear length and diameter, weight of individual ears, number of marketable ears and total yield were not affected. Increasing the plant population from 53,333 to 88,932 plants/ha increased barreness, lodged plants, desirable green ears and total yield. However, stalk diameter, ear length and weight of marketable ears were decreased. Quality of sweet corn as scored was not significantly affected by rate of nitrogen applied and plant population density. These quality parameters appeared to be more dependent on stage of maturity when the corn ear is harvested for market. Though, ear diameter, weight of individual ear, yeild of marketable green ear and total green ear yield increased as maturity advances, tenderness ans sweerness declined markedly. Higher yield and better quality of procedure can be obtained from Thai DMR Super (...).
Author: Abdulameir Ali Yassen
Publisher:
ISBN:
Category : Sweet corn
Languages : en
Pages : 152
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Book Description
The response of sweet corn Zea mays L. var. rugosa (cultivar 'Jubilee') to row spacing, nitrogen and population density at two planting dates was studied in a field experiment at the OSU Vegetable Research Farm in 1984. Variables included two row spacings, 75 cm and 90 cm, three nitrogen rates, 150, 200, 250 kg/ha, and seven plant population densities, 49,400; 55,575; 61,750; 67,925; 74,100; 80,275 and 86,450 plants/ha. Population density showed a greater effect on yield (unhusked total and husked good), number of ears/plant, stalk diameter, ear weight, ear length, usable ear length, ear diameter and tipfilling of ears than did nitrogen rates and row spacing. Effects of row spacings and nitrogen rates were generally not significant. Total unhusked yield and yield of husked good ears increased 16 to 20% for the early planting and 22 to 24% for the late planting as plant density increased from 49,400 to 86,450 plants/ha. Ear weight of the first ear decreased 10% in the early planting and about 15% in the late planting as plant density increased from the lowest to the highest. Although characteristics of second ears were affected by plant population density, their contribution was only 3-16% of the total yield. Longer ears and higher ear weights were associated with the lower plant densities. Stalk diameter was reduced, plants were taller, and average number of ears per plant was reduced at higher densities. No significant interactions between the variables studied in the experiment were observed on any of yield or plant and ear characteristics measured.
Author: Henry Edward DeVries
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 242
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Author: Bakelana Ba Kufimfutu
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 126
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Author: Patrick Bioma Kiadii
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 144
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Author: Nathália Nogues Mourad Moretti
Publisher:
ISBN:
Category : Nitrogen fertilizers
Languages : en
Pages : 90
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Author: Ruben Charles Keesee
Publisher:
ISBN:
Category : Nitrogen fertilizers
Languages : en
Pages : 74
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Author: Mohammad Athar
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 114
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Author: Donald William Kemper
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 224
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Field experiments were conducted in 1969 and 1970 to determine the effects of corn hybrid, rate of applied nitrogen and plant population on nutrient uptake, yield, several yield components and several agronomic characteristics of corn (Zea mays L.). The corn was planted at equidistant intervals with plant spacings ranging from 25,4 to 50.8 on, the range of plant populations was 39,520 to 158,080 plants/ha. Nitrogen was broadcast in 67 kg increments (0 to 538 kg of nitrogen/ha) at planting as ammonium nitrate. The corn hybrids used wereN6 x B14, N31 x N28, N28 x C103, Nebr. 808 and Ner. 501D. Irrigation water was supplied as necessary. Ramrod and atrazine were applied for weed control at the rate of 3.36 and 1.12 kh/ha respectively. The parameters measured include the following: uptake of nitrogen, phosphorus, potassium and sulfur (percentage uptake, uptake/plant and uptake/unit area) and dry matter accumulation at the 6-, 11-leaf and at the silking stage were measured. Crain yield, the number of cars and plants per plot and the number of ears per 100 plants, shelling percentage, dry matter of the graing, car lenght, ear width, 100 kernel weight, grain protein, dates of 50% tassel and 50% silked, and dates of the first and last pollen shed were the measured parameters. Plant height, stalk diameter, leaf area and LAI were measured only in 1969. Lodging, breakage and stripping damage were measured only in 1970 becuase of severe wind damage to the crop. As a result of decreased plant size, the uptake of nutrition...
Author: Brenda Ntombenhle Dlamini
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 76
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