Download or read book Studies on Seed Rate Irrigation Weed Control and Their Interactive Effects in Bed Planted Soybean Glycine Max L Merrill written by Mandeep Kaur and published by . This book was released on 2003 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Row Spacing Plant Population and Varieties on Both Irrigated and Non Irrigated Soybean Glycine Max L Merrill Production written by Frank William Pearsall and published by . This book was released on 1982 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Interactive Effect of Herbicides and Fertilizers on Soybean Glycine Max L merrill and Their Residual Effect on the Succeeding Crop of Wheat Triticum Aestivum L written by D. V. Chin and published by . This book was released on 1991 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Soybean Glycine Max L Merr Row Width and Plant Population of Weed Competition and Soybean Yield and Influence of Stem boring Insects on Common Lambsquarters Chenopodium Album L Control with Glyphosate written by Dana Brian Harder and published by . This book was released on 2006 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation and Performance of Permanent Raised Bed Cropping Systems in Asia Australia and Mexico written by and published by . This book was released on 2005 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Permanent raised bed cropping systems are being adopted under a wide range of irrigated and dryland farming conditions. ACIAR has supported research into permanent raised bed systems in Asia and Australia. Results from these projects and other research were presented at a workshop in 2005. The papers in this proceedings bring together the work that was presented at the workshop and provide a valuable resource for researchers and practitioners of permanent raised bed cropping systems"--Summary Web page.

Download or read book Evaluation of Cultural Weed Control Methods in Soybean Glycine Max to Improve Crop Competitiveness written by Tasha Valente and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Effects of cultural weed control methods in soybean were examined under moderate and high weed populations for their effect on crop canopy closure and canopy closure. The reference treatment was a slender soybean cultivar planted at a standard seeding rate (400,000 seeds/ha) with no pre-plant nitrogen added. Field studies were conducted in Elora, Ontario and Woodstock, Ontario in 2014 and 2015. Treatments included two levels of each: pre-plant nitrogen, seeding rate, competitive cultivar selection, and weed pressure. Weed emergence, above ground weed biomass, canopy light transmittance, and soybean yield were measured. Weeds continued to emerge until canopy closure regardless of treatment; there was also little difference in canopy closure between treatments. Nitrogen treatment alone (P=0.0214) and in combination with the bushy soybean cultivar (P=

Download or read book Effect of Environment and Planting Date on Soybean Glycine Max L Merrill Seed Composition written by Christopher L. Ray and published by . This book was released on 2005 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies on Weed Control in Soybean Glycine Max L Merrill written by K. A. S. S. Srinivasa Rao and published by . This book was released on 1993 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Various Planting Practices on Yields and Growth and Development of Soybeans Glycine Max L Merrill in Michigan written by David Warren Merck and published by . This book was released on 1980 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Soil Water Availability and Planting Density on the Grain Yield of Soya Beans Glycine Max L Merrill written by Eric Nemakhavhani Ndou and published by . This book was released on 2006 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study investigates interaction effects between water availability and planting density on the grain yield of soya beans (soy beans) for the purpose of refining the existing planting density recommendations for local use. The experiments show that the increase in grain yield obtained by raising planting density was due to an increase in the number of pods per unit area and the number of seeds per unit area. The interaction effect between soil water availability and planting density is also highly significant.

Download or read book Integrated Weed Control in Soybean Glycine Max L Merrill written by KAMALA BAI S and published by . This book was released on 1993 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Influence of Soil applied Herbicide and Pathogen Interaction on Upregulation of Systemic Acquired Resistance in Soybean written by Rhett Stolte and published by . This book was released on 2019 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exposure of crop plants to stress or injury, such as soybean injury by PPO-inhibitor herbicide, may stimulate the upregulation of Systemic Acquired Resistance (SAR) and reduce plant susceptibility to other stressors, such as disease-causing pathogens. Field and laboratory studies were initiated to evaluate the upregulation of SAR, examining the effects of PPO-inhibiting herbicide treatment on Sudden Death Syndrome incidence and severity in soybean and the relationship of disease incidence and severity related to stand count and yield with various population densities. A two-year field study was established in Shawneetown, IL to evaluate grain yield and disease potential of soybean cultivars which are either sensitive or tolerant to protoporphyrinogen oxidase (PPO)-inhibitor herbicides, with seed either treated with insecticide, thiamethoxam and fungicides, fludioxonil and mefanoxam (Upshot) and biological fungicide Bacillus amyloliquefaciens strain D747 (Avonni) (biological fungicide) or non-treated. The seeds were planted at six different seeding rates: 197,684; 247,105; 296,526; 345,947; 395,368; 444,789; with the controls planted at a density of 345,947 seeds ha−1 in a 2 × 2 × 7 factorial study design. Field experiments were planted on April 25, 2016 and May 6, 2017 in 76 cm, 4-row plots measuring 3m by 7m, and herbicide was applied to treated plots over the center 2 rows. Data collection included crop injury at 14, 28 and 56 days after treatment (DAT), stand count at 14 and 28 (DAT), plant height and node count at end-of-season (EOS), and disease incidence and severity ratings beginning at the onset of symptomology. Yield data was collected from the center two treated rows. All plots, except the non-treated controls, received an application of sulfentrazone + cloransulam-methyl (316 g ai ha−1). In 2016 the greatest crop injury, categorized by stunting, at 14 DAT occurred in the PPO-tolerant seed variety without a fungicide and insecticide seed treatment at 4.2% planted at 444,789 seeds/ha. At 28 DAT with means pooled over seed treatment and seed variety, we observed the 197,684 seeds/ha plots having greatest crop injury at 5.25%, and lastly at 56 DAT, the 197,684 and 247,105 seeds/ha plots containing untreated, PPO-sensitive seed were the most injured at 12% crop injury. In 2017, 14 DAT was excluded from the analysis, as there was no injury at the time of rating. At 28 DAT, the PPO-sensitive seed variety, pooled over seed treatment, at 197,684 seeds/ha resulted in greater crop injury at 8.6%, similar to 2016. At 56 DAT, similar results were observed as in 2016, at 12% crop injury in the PPO-sensitive seed variety without a seed treatment planted at 197,684 seeds/ha. There were differences in stand count by seeding rate at 14 and 28 DAT, but no interactive effects between the factors in 2016; seed treatment and seed variety were not significant. However, in 2017, there were differences in stand count by seed variety and seed treatment at 14 and 28 DAT, but again, no interactive effects between factors. Relationships between stand count and seeding rate indicated a threshold at which the environment cannot sustain higher planting densities. Environmental conditions were more favorable for crop growth in 2016 than 2017. Rainfall 10 days following planting was recorded at 67 mm and 290 mm in 2016 and 2017, respectively. Soybean node counts in 2016 were greater in the PPO-tolerant variety were seed was treated with a fungicide and insecticide seed treatment. In 2017, node counts were not influenced by seed treatment or seed variety; however, the greatest number of nodes were in the 444,789 seeds/ha planting population. Disease was more prominent in the high-density plots than in the low-density plots, as would be expected because of the effects of competitive stress on plant susceptibility to pathogens as well as more plants to be infected by the pathogen. Sudden Death Syndrome disease incidence (scale of 0 to 100%) in 2016 ranged from 1.2 to 25.5 across rating dates, while severity (scale of 0 to 9 based on leaf symptomology) ranged from 0.3 to 2.2 across rating dates. In 2017 disease incidence ranged from 0 to 25.0 across all rating dates, and disease severity ranged from 0 to 1.6 across all rating dates. Yield in 2016 ranged from 3,449.8 kg/ha to 4,060.3 kg/ha with the highest yield in the PPO-tolerant variety and the lowest in the -sensitive variety. However, in 2017, yield was lowest in the 197,684 plants/ha treatments at 1,509.1 kg/ha and highest in the 444,789 plants/ha treatments at 4,053.9 kg/ha. Significant varietal and seed treatment differences were also noted in 2017. A growth chamber study consisting of 18 treatments to evaluate an induction of SAR in soybean following exposure to sulfentrazone in PPO-sensitive and -tolerant cultivars. Each treatment was analyzed to quantify pathogen infection. Treatments were also analyzed for the upregulation of SAR genes to evaluate the potential induction of systemic acquired resistance in treated and untreated seed accessions of PPO-sensitive and -tolerant cultivars in response to infections by Fusarium virguliforme, Pythium irregulare, and Rhizoctonia solani following exposure to sulfentrazone. Soil was inoculated with F. virguliforme, P. irregulare and R. solani and planting was done one day after inoculation using AG 4034 and AG 4135, PPO- (sulfentrazone) sensitive and tolerant cultivars, respectively. F. virguliforme DNA levels (351.98 picograms of fungal DNA/200 mg of root tissue) were highest in the PPO-sensitive variety with a seed treatment and an herbicide application. P. irregulare levels were sproradic; regardless of seed treatment, fungal DNA levels were only different in the PPO-sensitive variety with seed treatment and herbicide application at 95.92 picograms of fungal DNA/200 mg of root tissue. All non-inoculated samples produced minute levels of Pythium DNA. R. solani levels were only statistically different in the treatment containing: untreated, PPO-sensitive seed that was non-inoculated. Gene expression levels were greatest in the PPO-tolerant variety. NPR1 expression was greatest in the PPO-tolerant variety with an application of sulfentrazone at 27.26-fold-change over ubiquitin, statistically different from the PPO-tolerant variety without an application of sulfentrazone and the PPO-sensitive variety with an application of sulfentrazone. The expression of the NIMIN1 gene showed no difference between treatments for either PPO-tolerant or -sensitive variety. The PPO-tolerant seed, inoculated with P. irregularrre and treated with sulfentrazone resulted in 0.02-fold change, statistically different from all other treatments except, PPO-sensitive seed without sulfetrazone at 0.33-fold change when EREBP was the gene of interest. The PPO-tolerant variety with an application of sulfentrazone was significantly different from the PPO-sensitive variety with an application of sulfentrazone at 13.8 and 0.69- fold change, respectively in regard to EDS1 being the gene of interest. Looking at PAD4 expression, being the greatest in the treated seed with a herbicide (pooled over variety and inoculum) at 1.66-fold difference from ubiquitin, and statistically different from the remaining treatments. There was no difference between treatments for the gene of interest, SAM22, in either variety. Overall, the field experiment indicated that a seeding rate of 345,947 seeds/ha was optimum with no penalty to yield. By planting a higher population than that yield was not significantly increased. Planting a PPO-tolerant seed variety resulted in the greatest yield overall, but on a disease resistance perspective, it was advantageous to plant a PPO-sensitive variety if SDS is an issue. Lastly, an application of sulfentrazone preemergence to soybeans does result in the upregulation of SAR in soybean, which was confirmed by RT-PCR following the expression level of six SAR genes.

Download or read book Interference Between Velvetleaf Abutilon Theophrasti Medic and Soybeans Glycine Max L Merrill written by John Dekker and published by . This book was released on 1980 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Integrated Weed Management in Soybean Glycine Max L Merrill written by Rupa Ram Jakhar and published by LAP Lambert Academic Publishing. This book was released on 2015-07-02 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soybean (Glycine max L.Merril) is a major component of the diet of millions of people throughout the world. It is one of the nature's most efficient protein producers. It yields more usable protein per unit area than any other commonly cultivated crop, at least three times more than rice, wheat or maize. While most plant sources of protein are seriously deficient in one or more of nine essential amino acids, soybean is an exception. It has diversified food options in the preparation of full fat soy-flour, milk, paneer, curd, ice-cream, sprouted and roasted snacks, soy-fortified bakery, soy-protein concentrate, and dietary-fiber, citric acid, margarine etc. It plays an important role in solving problem of malnutrition as it contains about 20% oil and 40% high quality protein. Its protein is rich in valuable amino acid lycine (5%), in which, most of the cereals are deficient. Amongst the major constraints in its cultivation, weed infestation is the most important one. It is very sensitive to early weed competition. Weed infestation in soybean field may reduce yield by 19-33% depending upon the intensity, nature and duration of weed competition.

Download or read book Some Effects of Seed Size on Performance of Soybeans Glycine Max L Merrill written by Clovis Terra Wetzel and published by . This book was released on 1975 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Yield and Development of Soybeans Glycine Max L as Affected by Irrigation with Municipal Wastewater and Well Water written by Michael J. Cordonnier and published by . This book was released on 1981 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Mechanical Sizing on Soybean Glycine Max L Merrill Seed Plantability and Quality written by John E. Armstrong and published by . This book was released on 1978 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: