Download or read book The Effects of Planting Date Nitrogen and Boron Application on Mineral Element Concentration Yield Dry Weight and Fresh Weight of Sweet Corn written by Jonathan Anthony Sisson and published by . This book was released on 1981 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of planting date on mineral element concentration in sweet corn (Zea mays L. cv. Jubilee) at six developmental stages and on yield were investigated. Planting dates were chosen to correspond to early, mid-season, and late commercial plantings. Two nitrogen rates were applied since nitrogen is more often limiting than any other nutrient for sweet corn grown in Western Oregon. Boron was also applied since it has been shown to be limiting in many other crops grown in the Willamette Valley. Planting date significantly affected N, P, K, Ca, Mg, Mn, Fe, Cu, B, and Zn concentration in the whole plants during the vegetative growth stages and in the ear leaves during the stages between tasseling and harvest. During the early stage of growth, N, P, K, Ca, Mg, B, and Zn tended to be higher in the early planted corn plants, while later in the development of corn the effects of planting date were more variable. Planting date also affected the fresh and dry weight of whole plants; the later planting produced more dry weight than the earlier two plantings, while the early planted corn produced more fresh weight at harvest than the later two plantings. Consequently, when analyzing sweet corn for nutritional status, date of planting should be considered when interpreting the plant analysis data. The application of B had no effect on yield, fresh weight or dry weight and only increased B concentration at the first developmental stage. The additional application of N, did not significantly increase yield for the late planted corn, but did for early planted corn. N concentration, as well as Mg, Mn, Cu, and Zn concentrations increased with the higher rate of N fertilizer applied (125 kg/ha). Fresh weight and dry weight were both higher in the plants receiving the higher rate of N, with the difference becoming greater as the plants matured.
Download or read book The Effect of Time of Nitrogen Application on the Yield written by Patrick Bioma Kiadii and published by . This book was released on 1967 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Planting Date on Dry Matter Yield and Nitrogen Accumulation of Annual Medic Species Either Clear seeded Or Intercropped with Corn written by Peter Jeranyama and published by . This book was released on 1995 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book O S U Theses and Dissertations 1978 1982 written by Oregon State University and published by . This book was released on 1983 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pests and Yield of Sweet Corn written by Rola Michel Atiyeh and published by . This book was released on 1993 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experiment was conducted in 1992 at the Agricultural Research and Education Center {AREC) of the American University of Beirut, Lebanon, to determine the effect of three planting dates (May 7, 21, and June 4) and three nitrogen levels (0, 100, and 200 Kg/ha) on population growth of corn leaf aphid, Rhopalosiphum maidis (Fitch), percent corn borer, Sesamia cretica Led., and corn earworm, Heiicoverpa armigera (Hubn.t, infestation, and yield components of sweet corn.Aphid populations were recorded at 12-leaf, tassel, silk, blister, and milk stage. Aphids were counted on one leaf chosen from lower, middle and upper 1/3 of the plant. Results revealed that the aphid population was not affected by planting date, but was significantly higher at silk stage, when nitrogen was not applied (8.18 aphid/leaf), with higher number of aphids (8.29/leaf) occupying the upper leaves (upper 1/3) of the plant. Stalk infestation by corn borer was very low (0.96%). Early planting of sweet corn resulted in higher percent (8.87) of ear infestation (by corn borer and corn earworm) which decreased with each delay in planting from May 7 to June 4. Emergence, plant height, total number of tillers, number of fertile tillers, number of ears per tiller, percent seed moisture, total ear weight, and biological yield of sweet corn were not significantly affected by the treatments. Early planting of sweet corn resulted in the highest, averaged over nitrogen levels, total ear weight (12940.3 Kg/ha), number (23500/ha) and weight (6634.3 Kg/ha) of marketable ears , percent marketable ears (32%), and harvest index (0.19), but decreased as planting was delayed. Increase in nitrogen level f rom 0 to 100 Kg/ha resulted in significant increase in number and weight of marketable ears. As nitrogen level was increased from 100 to 200 Kg/ha, number and weight of marketable ears decreased. Total number and weight of non-marketable ears ( diseased, immature, infested, or not fitting the standards of marketability) were not significantly affected by the treatments. However, number of diseased ears increased while number and weight of infested ears decreased as planting was delayed.
Download or read book Effect of Fertilizer and Moisture on the Growth and Yield of Sweet Corn written by Howard Boyd Peterson and published by . This book was released on 1953 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Plant Population and Advancing Maturity on Corn Silage Quality as Measured by Acid Detergent Fiber Acid Detergent Lignin Total Nitrogen Cell Wall Constituents Nitrate Nitrogen and Dry Matter Yields written by Alexander L. Henderson and published by . This book was released on 1974 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Early Planting on the Composition and Yield of Corn written by Benjamin A. Brown and published by . This book was released on 1928 with total page 24 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 Agrindex written by and published by . This book was released on 1995 with total page 1094 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Divergent Selection of Sweet Corn Zea Mays L Var Saccharata Under Low and Conventional Nitrogen Environments written by Carol A. Miles and published by . This book was released on 1993 with total page 332 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 The Effects of Plant Population and Nitrogen on Sweet Corn Yields written by Joe Dick Moss and published by . This book was released on 1974 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The response of sweet corn (Zea mays L. var. rugosa cultivar Jubilee) to 12 populations and four nitrogen rates was studied in a field experiment. Populations ranged from 43, 904 to 329,800 plants/ha with nitrogen levels ranging from 0 to 224 Kg/ha. A systematic spacing design was used. Plant height, weight of leaves, stalk diameter, and total plant weight were shown to be significantly affected by plant populations and nitrogen treatments. Total yields were increased 3.8% as plant population increased from 43,904 to 158,481 plants/ha. Populations above 109,762, reduced marketable yields. The weight of the first and second ears were significantly reduced as populations increased from 43,904 to 329,800 plants/ha. The nitrogen rates of 56,112, and 224 Kg/ha significantly increased the ear weight over the 0 Kg/ha rate. (There were no significant population-nitrogen interactions on any of the plant and ear characteristics measured.).
Download or read book A Study of Winter Grown Cover Crops Their Place in Soil Management and Their Effects on Sweet Corn Yields written by William Arthur Dickinson and published by . This book was released on 1956 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen Use Efficiency and Yield of Corn Zea Mays L as Affected by Weed Management and Time of Nitrogen Fertilizer Apllication written by Vivas Caraniwan, I and published by . This book was released on 1990 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was conducted to determine the effect of weed control methods and time of nitrogen fertilizer application on yield and nitrogen fertilizer use efficiency of corn and to identify weed control practice(s) and time(s) of nitrogen fertilizer application that promote nitrogen use efficiency and high yield of corn at minimum cost. Weed control methods had no significant effects on all parameters studied except for leaf area index (LAI) and weed fresh weight at 50 DAP. Leaf area indices from W6 (handweeding four times) and W5 (preemergence application of atrazine + pendimethalin + hilling-up) were significantly higher than W1 (off-barring + hilling-up) and W2 (hoeing + hilling-up). W6 gave the mst effective control of weeds based on fresh weed weight at 50 DAP. W2 and W5 provided poor control of weeds. W1 and W4 (preemergence application of pendimethalin + spot hoeing + hilling-up) provided less satisfactory control of weeds than W6 but better control than W3 (preemergence application of atrazine + spot hoeing + hilling-up). The differences in crop LAI and weed control efficacies were not reflected in grain yield and nitrogen use efficiency of the crop indicating that all the six weed control methods provided adequate control of weeds in the trial site. The time of N fertilizer application signifantly affected early crop growth and vigor, days to tasseling and silking, plant and ear height, leaf area index, total dry matter yied, ear kernel filling length, number of kernel rows per ear, number of kernels (...).
Download or read book Nitrogen Nutrition and Susceptibility of Sweet Corn Zea Mays L Var Rugosa to Drought written by Jean Pierre Mvondo Awono and published by . This book was released on 1988 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen and Phosphorus Requirements for Sweet Corn in Western Washington written by Shiou Kuo and published by . This book was released on 1985 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
