Download or read book Effects of Tillering on Yield and Yield Components of Grain Sorghum Sorghum Bicolor L Moench written by Herbert Arnold Bruns and published by . This book was released on 1975 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Seed Vigor Upon Field Performance and Yield of Grain Sorghum Sorghum Bicolor L Moench written by Cilas P. Camargo and published by . This book was released on 1971 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hybrid grain sorghum seeds were aged artifically for 0, 3, 5, 7, and 11 days at 42oC and 100% RH, wich produced high, medium, low and lowest vigor level. Among the various laboratory tests performed, standard germination and field mergence, were the least sensitive in discerning the physiological condition of the seed lots. The speed of germination more accurately differentiated the degree of deterioration of the seed lots and was closety correlated to yield. Adverse effect of planting low vigor seeds was found to be related to plant height, panicle exsertion, anthesis, tillering capacity, length of the panicle, and yield. Less vigours seeds produced plants which were not able to "catch up" to the vigorous ones. These slow growing plants were significantly inferior in panicle exsertion to those produced from more vigorous seeds. Seeds aged for 7 and 11 days had their process of exsertion delayed for about 2 and 3 days, respectively. Anthesis, conseguently, was also significantly retarded. Tillering capacity of plants produced from low vigor seeds was significantly reduced, as well as grain yield. Primary head yield was also significantly reduced about 14% for the more deteriorated seeds, and 12% for the mixed treatment, as compared to the control. Yield reductions of 9, 4, and 3% were also detected in seeds aged for 7, 5, and 3 days, respectively, as compared to the check. Seed moisture content generally increases as the vigor level decreased, indicating that the process of maturation was delayed as a (...).

Download or read book Yield and Tillering Response of Grain Sorghum Sorghum Bicolor L Moench Hybrids to Planting Date and Density written by Samuel Temitayo Jaiyesimi and published by . This book was released on 1979 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Field Environmental Conditions Related to Tillering and Its Contribution to Yield of Grain Sorghum Sorghum Bicolor L Moench written by Herman Albert Praeger and published by . This book was released on 1977 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physiological and Agronomic Responses of a Grain Sorghum Sorghum Bicolor L Moench Hybrid to Elevated Night Temperatures written by V. B. Ogunlela and published by . This book was released on 1979 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two greenhouse and three field experiment were conducted to study the effects of elevated night temperatures on the yield and growth of a grain sorghum (Sorghum bicolor (L.) Moench) hybrid. The genotype used in these investigations was the 'RS 671' (Redlan x Tx 415), an open-pedigree temperate-adapted grain sorghum. The phenological growth phase during which temperature treatments were imposed was the panicle development (GS-2) period. Experiment I, II (greenhouse) and III (field) were designed to determine the response of grain sorghum to two elevated night temperatures and the growth stage during GS-2 period when the plant is most sensitive to elevated temperatures. Experiment IV and V (field) were conducted with the same objectives as those for Experiment I, II and III and also to determine the effects of artificial preconditioning on the plant's response to elevated night temperatures. Experiments I - Plants were exposed to 26.5 and 32 C night temperatures at 4-day durations commencing from florest differentiation through bloom. The two elevated night temperatures caused significant reduction in grain yield and yield components except seed size that was enhanced (12%) by the 32 C treatment. Approximately 19%, 21%, 24% and 20% reductions in panicle dry weight, grain yield per plant, number of seeds per panicle and grams of grain/GS-3 day/plant, respectively, were caused by the 32 C treatment. The 26,5 C treatment also caused reduction in these variables but to much lesser degrees. Numbers of days to (...).

Download or read book The Interaction of Yield Components Towards the Expression of Yield in Grain Sorghum written by Bin H. Zakri and published by . This book was released on 1973 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comparative Performance of Three Grain Sorghum Sorghum Bicolor L Moench Cultivars Grown Under Rubber and in the Open Field as Affected by Nitrogen Level and Plant Density written by R.T. Gloria and published by . This book was released on 1975 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three grain sorghum cultivars were grown in the open field and under seven - and towo-year old rubber trees at there levels of nitrogen fertilizer and plant population density, to determine their performance in both seed and atoon crops in terms of grain yeild and other agronomic characters, quality perameters like protein and total starch content of grains and their effects on stem girth and latex yield of rubber. Comparing the six cultural environments with respect to the parameters evaluated, those grown in the open field and under two-year old rubber trees nanmely, MIT open field seed crop. MIT-open field ratoon crop, Kidapawan-under rubber seed crop and Kidapawan-under rubber ratton crop reduced the number of days to blooming, and gave higher grain and total dry matter yields, 100-grain weight and number of grains per panicle. The same treatments gave higher starch but lower protein content in the grains compared to those grown under seven-year old rubber trees namely. MIT-under rubber seed crop and MIT-under rubber ratoon crop. The u=yield component that was consistently associated with grain yield was number of grains per panicle. Nitrogen treatments increased grain yield, total dry matter yield, plant height, leaf area index and number of grains per panicle. Plant population density reduced leaf size and panicle length in both seed and ratoon crops in all environments. The cultivars showed a wide diversity of performance in different culturtal envivornments. There were as inverse relationships (...).

Download or read book Effect of Planting Geometry Hybrid Maturity and Population Density on Yield and Yield Components in Sorghum written by Kalaiyarasi Pidaran and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Prior studies indicate clumped planting can increase grain sorghum yield up to 45% under water deficit conditions by reducing tiller number, increasing radiation use efficiency, and preserving soil water for grain fill. The objective of this study was to evaluate effects of planting geometry on sorghum grain yield. The field study was conducted in seven environments with two sorghum hybrids, four populations, and two planting geometries. Crop responses included leaf area index, yield, and components of yield. Delayed planting decreased yield by 39%, and a later maturing hybrid increased yield, relative to an early hybrid, by 11% under water sufficiency. Clumped planting increased the fraction of fertile culms (culms which formed panicles) from 5-14%. It reduced the number of culms m−2 by 12% under water limiting conditions (at one of two locations) but increased culms m−2 16% under water sufficiency. Seeds per panicle and seed weight generally compensated for differences in panicles m−2, which were related to different planting population densities. Although agronomic characteristics of hybrids varying in maturity have been widely studied, little information exists concerning their physiological differences. Therefore, the objective of the greenhouse study was to determine if stomatal resistance, leaf temperature, and leaf chlorophyll content differed between two DeKalb grain sorghum [Sorghum bicolor (L.) Moench] hybrids. They were DKS 36-16 and DKS 44-20, of medium-early and medium maturity, respectively, when grown under field conditions in Kansas. Seeds were planted in a greenhouse. Stomatal resistance and leaf temperature were measured 55 days after planting with a Decagon Devices (Pullman, WA) diffusion porometer, and chlorophyll content was measured 119 days after planting with a Konica Minolta (Osaka, Japan) SPAD chlorophyll meter. The two hybrids did not differ in stomatal resistance, leaf temperature, chlorophyll content, height, and dry weight. Their difference in maturity was not evident under the greenhouse conditions. Future work needs to show if hybrids of different maturities vary in physiological characteristics.

Download or read book Effect of Nitrogen Phosphorus Potassium and Plant Population on the Yield of Grain Sorghum Sorghum Bicolor L Moench written by Oswaldo E. Andrade-Bracho and published by . This book was released on 1982 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Planting Practices and Nitrogen Management on Grain Sorghum Production written by Alassane Maiga and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Sorghum [Sorghum bicolor (L.) Moench] is a relatively drought- and heat-tolerant cereal crop. Global demand and consumption of agricultural crops for food, feed, and fuel is increasing at a rapid pace. To satisfy the growing worldwide demand for grain, production practices must be well optimized and managed. The objectives of the present study were: to optimize sorghum production by determining the best management practices (planting date, row spacing, seeding rate, hybrid maturity) for growth and yield, to evaluate the agronomic responsiveness of grain sorghum genotypes to nitrogen (N) fertilizer and to develop a partial financial budget to N fertilizer application based on best management practices. In order to meet these objectives, field experiments were conducted in 2009, 2010 and 2011 at Manhattan, Belleville, Ottawa, Hutchinson, Hays, at KSU Experiment Stations and Salina, and Randolph at Private Farms. Results indicated that early planting date (late May) and narrow row spacing (25 cm) providing the most equidistant spacing, produced better plant growth, light interception, yield components (number of grains per panicle, 300-grain weight), and biological yield. Results indicated that with increasing N rate, there was a proportional increase in chlorophyll SPAD meter reading, leaf color scores and number of green leaves. There was a significant difference among hybrids for N uptake, NUE and grain yield. However, there was no effect of N and no interaction between N and hybrid on grain yield. Over all, the genotypes with high NUE also had higher grain yield. Economic analysis using partial budget indicated that all N levels had positive gross benefit greater than control at all locations. However, the response varied across locations. Our research has shown that sorghum responds to changing management practices and opportunities exist to increase grain yield by optimizing planting date, seeding rate, row spacing, N application and selection of genotypes.

Download or read book Effect of Seed Vigor Levels on Field Performance and Yield of Grain Sorghum sorghum Bicolor L Moench written by Amos Olaitan Ogundipe and published by . This book was released on 1984 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Physiologic and Management Factors on Yield and Quality of Grain Sorghum Sorghum Bicolor L Moench Residues written by Danny Harold Smith and published by . This book was released on 1977 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Row Spacing and Nitrogen Fertilizer on Yield and Yield Components of Seven Sorghum Sorghum Bicolor L Moench Cultivars written by Farman Jodari-Karimi and published by . This book was released on 1979 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Population Nitrogen Application Rates and Their Interactions on Grain Yield Percent Grain Protein and Other Agronomic Characteristics of Three Sorghum Sorghum Bicolor L Moench Hybrids written by Damana Jamari Gaya and published by . This book was released on 1975 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Water Stress and Night Temperature on Grain Yield of Sorghum Bicolor L Moench Under Field Conditions written by Josè Francísco Gòmez B. and published by . This book was released on 1982 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Thinning at Different Growth Stages on Morphology and Yield of Grain Sorghum Sorghum Bicolor L Moench written by Ronnie Mack Castleberry and published by . This book was released on 1973 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Plant Spacing on Yield Components of Sorghum in the U S A and Soybean in India written by H. C. Minor and published by . This book was released on 1971 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: A. Grain sorghum - 1966 and 1967. The effects of plant spacing on yield and yield components of RS610 hybrid grain sorghum were studied in 1966 and 1967 at Urbana, Illinois. Grain yield/plant was, as expected, reduced in all experiment as plant population was increased. Plants at low populations were able to compensate somewhat for low stand densities through production of tillers. More tillers were produced in narrow than in wide rows in one of the two experiments conducted in 1966. A generally higher/seed at low than at high plant population increased yield/plant at low population. In spite of tillering which increased the number of seeds/plant and production of heavier seeds by plants at low stand densities, yield/m2 increased as plant population increased to between 25-48 plants/m2, depending on the experiment. While RS610 hybrid grain sorghum has been noted for its high capacity to tiller, the results of these experiement indicate that it lacks the potential to produce a sufficient number of tillers/plant and/or seeds/panicle to offset low planting rates at Urbana, Illinois. Per plant yield from a study utilizing a systematic planting design, in which observations were single systematically arranged plants, were similar to those obtained in a large plot experiment. Small per plant difference were magnified, however, when they were multiplied by the number of plants/m2 so that predicted yield/m2 from the systematic study did not correspond closely to those obtained in the large plot experiment. (...).