Download or read book Spacing and Rates of Nitrogen For Corn written by C. E. Scarsbrook and published by . This book was released on 1966 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Close spacing and high rates of nitrogen are management practices that are essential for production of high yields of corn in Alabama. Since each of these practices affects value of the other, both must be followed for highest possible returns, as shown by results of experiments at several locations of Auburn University Agricultural Experiment Station System. Averages of data from 18 experiments show that 9-inch spacing in 42-inch rows (16,600 plants per acre) produced more corn than wider spacings tested. Since there is usually about 15 per cent loss of stand between planting and maturity, getting the correct population requires planting at 8 inches in 42-inch rows and at 9 inches in 36-inch rows. For most locations in Alabama, 90 to 120 pounds of nitrogen per acre in the recommemded rate, based on the experiments reported. In the Sand Mountain area, rates of 120 to 150 pounds are recommended. Choices of actual rate within the ranges suggested should be made on the basis of anticipated yield. When conditions are favorable for production to surpass 75 bushels per acre, the higher rates will usually be profitable.
Download or read book Spacing and Rate of Nitrogen for Corn written by Clarence Edwin Scarsbrook and published by . This book was released on 1966 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study of the Growth and Grain Yield of Corn as Affected by Nitrogen Rates and Row Width Spacing written by Sampe Tonapa and published by . This book was released on 1971 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Response of Dixie 18 and Whatley Prolific Corn to Varying Nitrogen Levels and Plant Spacings written by John Bartow Preston and published by . This book was released on 1951 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Row Spacing Plant Population and Nitrogen Level on Yield and Water Use of Corn written by Jeffrey Lee Vest and published by . This book was released on 1985 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Nitrogen Rates Row Spacings and Population Densities on Yield and Ear Characteristics of Sweet Corn written by Abdulameir Ali Yassen and published by . This book was released on 1985 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Corn Zea Mays L Yields as Influenced by Nitrogen Row Spacing and Intercropped Ryegrass Lolium Multiflorum written by Paibool Wivutvongvana and published by . This book was released on 1974 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two field corn experiments were conducted on a Woodburn silt loam soil near Corvallis, Oregon, in 1972-1973 to investigate the effects of certain soil management practices on the yield and performance of corn (Zea mays L.). Experiment I involved variables that included three corn row spacings (76, 114, and 152 cm) with annual ryegrass (Lolium multiflorum) interplanted at three different dates between the corn rows. Average dry matter corn yield of 17.6 m ton/ha obtained in the 76 cm spaced rows decreased by 16% as the row spacing increased to 114 cm. Increasing the row spacing from 114 to 152 cm did not affect corn yield. Corn yield was reduced when grass was interplanted in the widely spaced corn rows. A 35% corn plant yield decrease resulted when grass was planted on May 25 in the 152 cm wide corn rows as compared with the 76 cm row spacing. A further 15% reduction in corn yields occurred when ryegrass intercropped in the 152 cm rows was compared with yield from 76 cm rows which had no grass intercrop. Intercropping with ryegrass had no adverse effect on corn yield provided that such grasses were planted on July 24 or October 7 in the 76 cm spaced corn rows. Previous field history and the relatively high nitrogen taken up by the combined corn and grass crops suggested that the experimental area contained considerable residual soil nitrogen. Experiment II aimed at elucidating the effects of rate and method of applied nitrogen have on the yields from differently spaced corn. A 14% increase in dry matter yield of corn was obtained when row spacing was reduced from 91 to 61 cm. Moisture loss due to evaporation from the soil surface in the wide corn rows was higher than in the narrow spaced corn, Small dry matter corn yield increases were observed as nitrogen fertilizer rates increased from 140 to 196 Kg N/ha or from 196 to 252 Kg N/ha, respectively. The significant corn yield increase resulting from 252 Kg N/ha over the 140 Kg N/ha rates represented an 8% increase. No differences in corn yield were noted due to methods of nitrogen application.
Download or read book Plant Spacing of Sweet Corn written by Desmond Daniel Dolan and published by . This book was released on 1952 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Systems approaches for agricultural development written by F.W.T Penning de Vries and published by Springer Science & Business Media. This book was released on 1993 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the International Symposium on Systems Approaches for Agricultural Development, 2-6 December 1991, Bangkok, Thailand
Download or read book A Method of Economic Analysis Applied to Nitrogen Fertilizer Rate Experiments on Irrigated Corn written by James Leo Paschal and published by . This book was released on 1956 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen and Spacing Experiments with Corn written by O. H. Long and published by . This book was released on 1953 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Corn Fertilizer and Spacing Experiments written by D. A. Hinkle and published by . This book was released on 1961 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experiments involving varying plant populations and nitrogen levels were conducted at the Main Experiment Station during the years 1949 to 1957. From 1957 through 1959 fertilizer experiments using N, P, and K were conducted at various locations at the Main and Branch Experiment Stations. Conclusions drawn from these experiments are: 1. The optimum number of corn plants, when plant food is adequate, appears to lie between 12,000 and 16,000 plants per acre. 2. The optimum amount of nitrogen (with all other needed elements supplied in ample amounts) will depend upon the amount and rate of mineralization of soil organic matter. In these experiments 150 to 180 pounds gave the highest yields, but something less than this would probably give more return per dollar spent for nitrogen. 3. Good response to nitrogen was generally obtained on the bottomland and terrace soils of the state. When substantial response was obtained, the efficiency was near on bushel increase for each two pounds of nitrogen. 4. Limited, but statistically significant, response to phosphorus was obtained on Loring silt loam, a typical terrace soil. No response was obtained on Dundee, Tunica, or Portland, typical bottomland soils. 5. No significant yield response was obtained from potassium in any of the tests, although there was a slight tendency toward such a response in a few cases. 6. A combination of nitrogen, phosphorus, and potassium did not increase yields over nitrogen alone on the bottomland soils nor did it increase yields over the combination of nitrogen and phosphorus on the terrace soils. 7. Ear weight and number of ears per stalk decreased with increasing plant population. However, at a constant population ear weight and number of ears per stalk increased with increasing nitrogen application. Ear number was affected to a greater extent than ear weight. 8. Nitrogen was the only plant food elements that significantly affected ear weight and number of ears per stalk. 9. Nitrogen increased lodging while phosphorus and potassium had little or no effect on lodging.
Download or read book Fertilizer Suggestions written by E. R. Flint and published by . This book was released on 1905 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen Fertilizers for Corn written by Lloyd Dumenil and published by . This book was released on 1952 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Lack of nitrogen limits corn production on most Iowa soils. Many Iowa farmers can use nitrogen fertilizer profitably, our experiments show. As the supply increases, much more nitrogen fertilizer will be used -- on a larger number of acres and at higher rates per acre. Many of you have used nitrogen fertilizer on corn. But many more of you will be using nitrogen in the future. The Iowa Agricultural Experiment Station has conducted over 200 experiments with nitrogen fertilizer on cornfields over the state since 1943. It is the purpose of this bulletin to give you the information gathered from these experiments along with pointers to help you use nitrogen profitably on your cornfields." p. [837]
Download or read book Augmenting a Low Rate of Nitrogen Fertilizer for Sweet Corn Production with Strip rototilled White Clover Living Mulch written by Vernon Phillip Grubinger and published by . This book was released on 1989 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Corn for Grain written by L. I. Painter and published by . This book was released on 1968 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Bulletin written by and published by . This book was released on 1955 with total page 1020 pages. Available in PDF, EPUB and Kindle. Book excerpt:
