Download or read book Studies on the Response of Sorghum C S H I Ratoon Crop to Different Levels of Nitrogen at Varying Tiller Number Per Hill written by Mohd Burhanuddin and published by . This book was released on 1971 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies on the Response of Sorghum CSH 5 to Micro Nutrient Application Under Varying Levels of Nitrogen written by V. Raja and published by . This book was released on 1977 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies on the Effect of Varying Levels of Nitrogen Times of Its Split Application on the Yield Yield Components of Ratoon Jowar Sorghum Vulgare Pers Hybrid written by B. Chenchuramaiah and published by . This book was released on 1970 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Influence of Maturity on Sorghum Grain Yields when Ratoon Cropping written by Ronny R. Duncan and published by . This book was released on 1986 with total page 24 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 Phenotypic Plasticity of Diverse Sorghum Varieties in Response to Nitrogen Deficit Stress written by Mackenzie Zwiener and published by . This book was released on 2021 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen is a key component in the growth of crops and can strongly influence phenotypic variation. The movement of nutrients from old vegetative tissue to young leaves and reproductive organs is known as senescence. Senescence can be influenced by the environment of a plant, such as, drought, heat, and nutrient stress. These environmental stressors can also influence canopy architecture. Crop canopy consists of several traits including: leaf number, angle, length and width. Past research in crops like maize and rice have shown significant influences of more erect leaves, including, the ability for increased planting density, which optimizes light interception and increases yield. In a field trial of a sorghum association panel including 345 different sorghum varieties grown in a replicated design under nitrogen sufficient and nitrogen deficit conditions, we have found that sorghum leaf angle is plastic in response to nitrogen deficit stress. While the response of individual varieties varied, an overall statistically significant trend was observed towards smaller leaf angles (e.g. more erect leaves) under deficient nitrogen conditions. In parallel with field experiments, greenhouse experiments utilizing sorghum plants grown under different levels of nitrogen availability were also conducted. These confirmed the increased erectness of sorghum leaves under nitrogen deficient conditions. In addition, RGB and hyperspectral images collected from this experiment were used to train machine learning models to classify individual pixels into six classes: nonplant pixels, panicles, stems, green leaves, senescing leaves, and dead leaves. With this new method, we were able to track the progression of senescence through the life cycle of individual sorghum plants grown under different nitrogen treatments.

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 Studies on the Response of Sorghum Under Different Levels of Nitrogen and Moisture Regimes written by B. Balaiah and published by . This book was released on 1975 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Response of Sorghum Hybrid CSH 6 to Varying Levels of Plant Population Under Two Levels of Row Spacing and Nitrogen written by Shubh Narayan Pandey and published by . This book was released on 1978 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Response of Sorghum Hybrid and Variety M 35 1 to Different Levels of Nitrogen phosphate and Potash in Under Irrtgation written by Ambike K N. and published by . This book was released on 1970 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies on Cultural Pratices for Sorghum Grown After Rice written by P.P. Pascual and published by . This book was released on 1977 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sorghum experiments were conducted at the Central Experimental Station, University of the Philippines at Los Banos, College, Laguna after the lowland rice was harvested during dry season 1977 with the following objectives: (1) to determine the grain yield of the selected grain sorghum cultivars grown after rice; (2) to evaluate the main and combined effects of tillage and populations densities on yield amd other agronomic characters of grain sorghum; (3) to study the response of selected grain sorghum cultivars to nitrogen levels with and without phosphorus; and (4) to correlate the leaf area index and grain yield. Regardless of the 3 rates of planting used, tillage practices did not have any significant effect on grain yield and other agronomic charactersfor both varieties tested. However, population densities significantly affected the leaf area index, plant height and grain yield. Population density of 300,000 plants/ha was better than 200,000 and 250,000 plants/ha. Application of nitrogen fertilizer increased plant height, leaf area index, number of grain per panicle and grain yield, but reduced the growth duration and 1000 grain weight. Phosphorus application together with nitrogen further improved the grain yield and other agronomic characters o fsorghum. Application of 150 kg N/ha together with 50 kg P2O5/ha was found the best among the different fertilizer treatments used. Leaf area index had significant positive correlation to grain yield. The bigger the leaf area index at blooming stage, the more(...).

Download or read book Rice Ratooning written by International Rice Research Institute and published by Int. Rice Res. Inst.. This book was released on 1988 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: Overview; Morphology and physiology of rice ratoons; Rice ratooning in practice; Evaluation and potential of rice ratooning; Cultural practices; Genetics and varietal improvement.

Download or read book Variation Among Grain Sorghum Genotypes in Response to Nitrogen Fertilizer written by George Yakubu Mahama and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Grain sorghum [Sorghum bicolor (L.) Moench] is an important crop in the semi-arid regions of Africa, Asia and United States. Productivity of grain sorghum is limited by soil fertility, especially nitrogen (N). Sorghum genotypes are known to vary in their response to nitrogen, however, the information on nitrogen use efficiency (NUE) is limited. The objectives of this research were to (a) determine the response of sorghum genotypes (hybrids and inbred lines) to nitrogen fertilizer (b) quantify genotypic differences in NUE; and (c) determine physiological and morphological basis of NUE. Field experiments were conducted at three locations in Kansas (Hays, Ottawa and Manhattan) during 2010 and 2011. Six hybrids and six inbred lines of grain sorghum were grown with 0, 45 and 90 kg N ha−1. The experimental design was a split-plot design with N regimes as main plots and genotypes as sub-plot, with four replications. Planting was done in May and June across all the locations, and nitrogen fertilizer (Urea, 46% N) was applied at emergence. Data on N concentration in the leaves, stems and grain were determined. NUE and components of N use were computed for Ottawa and Manhattan as follows: Nitrogen use efficiency (NUE): Grain weight / N supplied; Nitrogen utilization efficiency: Grain weight / N total in plant; Nitrogen uptake efficiency: N total in plant / N supplied; Percent fertilizer recovery = [uptake (fertilized plot) N uptake (un- fertilized plot)] / [N applied] x 100; and Nitrogen harvest index (NHI) = Grain N / N total in plant. Where N supplied = Rate of N fertilizer applied + soil N supplied. Growth and yield data were collected at all locations. There were significant effects of genotypes (P

Download or read book Studies on the Response of Sorghum Hybrid OSH 5 Under Eight Levels of Nitrogen and Four Moisture Regimes During Rabi Season written by G. Girish Chandra and published by . This book was released on 1976 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Planting Geometries and Fertilizer Placement on Nutrient Uptake by Grain Sorghum written by Pramod Pokhrel and published by . This book was released on 2016 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grain sorghum [Sorghum bicolor (L.) Moench] is an important dryland crop in the Texas Panhandle. Productivity of grain sorghum depends on climatic conditions, plant available soil water, and soil fertility. Previous research has shown growing grain sorghum in clumps instead of Equal Spaced Planting (ESP) reduced plant stress, reduced production of tillers, and increased harvest index and grain yield under dryland conditions. The current study was conducted in the greenhouse and field to investigate the effect of fertilizer application on sorghum plants grown in clump and ESP geometries. The objectives of the research were to (a) compare fertilizer (nitrogen and phosphorus) uptake in grain sorghum plants in clumps and ESP geometries (b) observe root growth patterns in clump and ESP plants (c) and determine the fertilizer effect on tiller formation and harvest index. The greenhouse experiment was conducted at West Texas A&M University during 2014 and 2015. Grain sorghum was grown in clump and ESP geometries with two and three fertilizer levels in 2014 and 2015, respectively. Plants were grown in wooden boxes, with a transparent side, covered by a removable wooden board, so that root growth could be observed. All experiments were conducted in a Randomized complete block design (RCBD) and fertilizer was applied in a band beneath clump and ESP plants. The field experiment was conducted at the USDA Conservation and Production Research Laboratory at Bushland, Texas, during 2014 and 2015. Grain sorghum was grown in clump and ESP planting geometries in unfertilized and fertilized (68 kg N ha-1 and 10 kg P ha-1) plots. Planting density in both geometries was 62,000 plants ha-1. In 2015 corn was grown in clump and ESP planting geometries without using fertilizer. N and P concentrations in grain and stover were obtained from laboratory analysis and data are reported as N uptake in aboveground biomass and P uptake in aboveground biomass In the 2014 greenhouse study, ESP plants had significantly higher N uptake in aboveground biomass, stover yield, and tillers per plant. However, harvest index was higher in clumps. The interaction between planting geometry and fertilizer showed a significantly higher N uptake in ESP with high fertilizer level. In 2015, clump plants had significantly higher grain yield, aboveground N uptake, nitrogen use efficiency (NUE) and phosphorus use efficiency (PUE). Increasing fertilizer level increased P uptake in aboveground biomass. Plants in ESP produced deeper and well developed root systems while clump plants produced roots that developed angularly and then downward. In the 2014 field study, clump plants had lower N and P uptake in aboveground biomass than ESP, but had higher NUE and PUE. Though clump plants had significantly fewer tillers per plant than ESPs, harvest index was not different. In the 2015 field study, planting geometry did not have a significant effect on N and P uptake in aboveground biomass, NUE or PUE. However, the interaction between planting geometry and fertilizer level showed higher N uptake in clump fertilized plants. Clump plants produced fewer tillers per plant. Harvest index was significantly higher in clumps. Fertilized plots had significantly higher N uptake in aboveground biomass but fertilizer had no effect on P uptake. Overall, data suggest N and P uptake in aboveground biomass varies by soil nutrient condition, and level of fertilizer. Increasing fertilizer level increases tiller production in the plants. Application of fertilizer has shown mixed results on N uptake and grain yield in clump and ESP plants. Further investigation is necessary to draw a conclusion on aboveground N and P uptake in plants grown in clump and ESP planting geometries at different fertilizer rates and placement methods.

Download or read book The Response of Sorghum to Variable Rates of Nitrogen written by Claude Franklin Cassady and published by . This book was released on 1957 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Differences in Dry Matter Yield and the Uptake Distribution and Use of Nitrogen by Sorghum Genotypes written by Goncalo Evangelista de Franca and published by . This book was released on 1981 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fifty-four sorghum (Sorghum bicolor (L.) Moench) genotypes were screened for differential response to N by growing plants with 10 mg N/ plant in nutrient solution. The genotypes TX 3934 X GH-8-17, and SC 423 X SC 239 produced the highest amount of dry matter per unit N (H), and SC 110 X SC 120, and SC 150-6 X SC 150-9 (L) produced the low-est amount of dry matter per unit N. Because of this, these genotypes were selected for further study to identify physiological properties that may be associated with differential N nutrition. The physiological properties evaluated in these genotypes were: (1) NO3 uptake rates as affected by time (hours after being put in a new N03 solution), N03 concentration, and plant age; (2) dry matter and N accumulation with plant age;(3) N distribution among plant parts at various plant ages; (4) dry matter produced per unit N; (5) genotype responses to different N levels and N compounds. Differential responses to N were moted among the genotypes screened with low N. The ranges were 131% for dry matter yields, 75% for N contents, 59% for top N/root N ratios, and 34% for dry matter produced per unit N. After an initial slow rate of N03 uptake, N03 absorption was relatively rapid during the next four hours before leveling off or decreasing after six hours in plants 34 days of age or younger; plants older than this showed no differences in N03 uptake. Patterns of N03 uptake with time suggested that uptake was induced by N03 at low concentrations. Differences in N03 uptake rates among (...).