Author: Joao Bosco PitombeiraPublisher:
ISBN:
Category : Cotton
Languages : en
Pages : 106
Book Description
Effect of Plant Population on Agronomic Characteristics and Yield of Cotton and Grain Sorghum
Author: Joao Bosco PitombeiraPublisher:
ISBN:
Category : Cotton
Languages : en
Pages : 106
Book Description
Effect of Plant Population on Agronomic Characterisitcs and Yield of Cotton and Grain Sorghum
Author: J.B. PitombeiraPublisher:
ISBN:
Category :
Languages : en
Pages : 52
Book Description
Field experiments were conducted at the University of Arizona Experiment Farm at Marana, Arizona, in 1970, to determine the effects of four plant populations on yield and agronomic characteristics of the cotton (Gossypium hirsutum L.) cultivar "Deltapine 16" and the grain sorghum[Sorghum bicolor (Linn.) Moench] hybrid "DeKalb A25". Significant differences in seed cotton yield due to plant populations were found. Boll size, lint percent, lint index, seed index, seed per boll, fiber length (upper half mean), fiber strength, fiber fineness, and plant height were not significantly affected by plant population. The efficiency of mechanical harvesting increased with plant population. No significant differences were found in grain sorghum yield due to the plant populations used in this test. Plant height, heads per plot, and seed index increased with plant populations, but head weight, yield per plants, heads per plant, and seed moisture content decreased. Plant population did not affect trash percentage with the combine used in this experiment.
Effect of Row Width and Plant Population on Agronomic Characteristics, Grain Yield, and Yield Components of Grain Sorghum
Author: Yahya Bin AwangEffect of Irrigation Schedule and Plant Population on Grain Yield and Other Characteristics of Grain Sorghum
Author: Nazir Ahmad SidhuPublisher:
ISBN:
Category : Sorghum
Languages : en
Pages : 116
Book Description
Genetically Engineered Crops
Author: National Academies of Sciences, Engineering, and MedicinePublisher: National Academies Press
ISBN: 0309437385
Category : Science
Languages : en
Pages : 607
Book Description
Genetically engineered (GE) crops were first introduced commercially in the 1990s. After two decades of production, some groups and individuals remain critical of the technology based on their concerns about possible adverse effects on human health, the environment, and ethical considerations. At the same time, others are concerned that the technology is not reaching its potential to improve human health and the environment because of stringent regulations and reduced public funding to develop products offering more benefits to society. While the debate about these and other questions related to the genetic engineering techniques of the first 20 years goes on, emerging genetic-engineering technologies are adding new complexities to the conversation. Genetically Engineered Crops builds on previous related Academies reports published between 1987 and 2010 by undertaking a retrospective examination of the purported positive and adverse effects of GE crops and to anticipate what emerging genetic-engineering technologies hold for the future. This report indicates where there are uncertainties about the economic, agronomic, health, safety, or other impacts of GE crops and food, and makes recommendations to fill gaps in safety assessments, increase regulatory clarity, and improve innovations in and access to GE technology.
Effect of Planting Geometry, Hybrid Maturity, and Population Density on Yield and Yield Components in Sorghum
Author: Kalaiyarasi PidaranPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
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.
Advances in Sorghum Science
Author: Ratikanta MaitiPublisher: CRC Press
ISBN: 1000286886
Category : Science
Languages : en
Pages : 290
Book Description
This new volume, Advances in Sorghum Science: Botany, Production, and Crop Improvement, provides an easy-to-read and comprehensive treatment of the sorghum crop. With the world’s production of sorghum topping over 55 million tons annually, sorghum is very important for as a staple dietary food for much of the world as a rich source of micronutrients and macronutrients, as an ingredient in the processing of many foods, and as a source of fodder. The authors of the volume provide detailed information on sorghum from several disciplines and bring together recent literature under one umbrella. The book covers the various aspects of the sorghum crop, starting from its origin, to its domestication, and going on to biotechnology of the crop. It describes sorghum production, ideotypes, botany, physiology, abiotic and biotic factors affecting crop productivity, methods of cultivation, postharvest management, grain quality analysis for food processing, improvement of sorghum crop, and research advancements in breeding and biotechnology. This valuable resource will be helpful to researchers and scientists working to understand the relation between various disciplines and the implementation of new methods and technology for crop improvement and higher productivity. The multi-pronged approach will help to enable the increase sorghum productivity to meet the world’s growing demands.
Grain Sorghum Row Spacing, Plant Population and Irrigation Studies on the High Plains of Eastern New Mexico
Author: Ralph E. FinknerPublisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 28
Book Description
Plant Population Effects on Water Extraction Pattern, Growth and Yield of Non-irrigated Grain Sorghum
Author: Fernando AjmadEffects of Irrigation, Plant Population and Phosphorus on the Yield of Grain Sorghum
Author: Shamsi Abiodun DabiriPublisher:
ISBN:
Category : Sorghum
Languages : en
Pages : 86
Book Description