Download or read book Phosphorus and Potassium Placement for Corn and Soybean Managed with Two Conservation Tillage Systems written by Daniel Wayne Barker and published by . This book was released on 1998 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deep-band K produced higher corn yields than other placements, even in high testing soils where no response was expected. There was no significant relationship between increases in early growth and greater grain yield for both crops. Stratification was largely reduced when deep-band P was applied but placement of K fertilizer did not reduce levels of stratification. In conclusion, early growth of both crops were greater in chisel till then for no-till. Chisel till usually produced greater corn grain yield than no-till while tillage seldom affected soybean yield. Grain yield of both crops benefited from P or K fertilizer applications. Planter-band P was effective for increasing early growth of corn and soybean. Deep-banded K increased corn grain yield when compared to other placements even in some high testing soils.

Download or read book Phosphorus and Potassium Management for Corn and Soybeans in Conservation Tillage written by Rogério Borges and published by . This book was released on 1998 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study evaluated the grain yield, P or K uptake, and early dry weight responses of no-tilled and ridge tilled soybeans [Glicine max (L.) Merr.] and ridge tilled corn (Zea mays L.) to broadcast, deep-band, and planter-band P and K fertilizer placements under Iowa soil and weather conditions. Long-term P and K trials were established in 1994 at five research centers and were evaluated for four years. Forty short-term P-K trials were established in farmers' fields from 1995 to 1997. Treatments were various P (O to 56 kg P ha−1) and K (O to 132 kg K ha−1) rates broadcast, banded with the planter 5 cm beside and below the seeds, and deep-banded at a 15-20 cm depth before planting. Plant samples were taken at V5 to V6 growth stages, dried, weighed, ground, and analyzed for total P and K content. Soil samples were taken from different depth and position relative to crop rows or fertilizer bands.

Download or read book The Effect of Tillage Method and Fertilization on the Yield and Elemental Composition of Corn and Soybeans written by William H. Darlington and published by . This book was released on 1983 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Corn and Soybean Response to Phosphorus and Potassium Fertilization written by Ingrid Arns and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Corn (Zea mays) response to fertilization and placement methods has been studied extensively; however studies on soybean [Glycine max (L.) Merr.] response to placement have been limited. Three studies were completed to evaluate different aspects of crop response. The objective of the first study was to evaluate the effect of starter and broadcast fertilizer application on corn and soybean, in a typical corn-soybean rotation in Kansas. Treatments were unfertilized control, starter (N, P and K), broadcast P and K using mono ammonium phosphate (MAP) and potassium chloride (KCl) and the combination of starter and broadcast. Corn and soybean yield generally was not affected by starter and broadcast treatments. Thus fertilization may be recommended only under specific conditions. The objectives of the second study were (i) to evaluate the effect of residual and direct fertilization on soybeans after corn under a corn-soybean rotation system, and (ii) study the effect of fertilizer P and K application on soil test P (STP) and soil test K (STK) changes over time. Direct fertilization increased soybean yield while residual fertilizer did not. Therefore maintenance rates may be effective to improve soybean yield and likely maintain STP and STK levels. Application of P and K fertilizer generated significant increases in STP and STK after one year of application. The rate of P and K fertilizer required to increase 1 mg kg−1 yr−1 was between 2.8 - 5.1 kg ha−1 for P and between 1.0- 2.5 kg ha−1 for K, respectively. The objective of the third study evaluate both corn and soybean response to direct P fertilization including starter and broadcast. The treatments were a control, two starter fertilizers (with N-P and N only), five P rates (9.8, 19.6, 29.3, 39.1, 48.9 kg P ha−1) and one treatment with starter fertilizer in addition to the broadcast fertilizer application. Corn grain yield was not significantly affected by any broadcast or starter treatments. Broadcast application rates significantly increased soybean yield on low STP levels. Results of this study show that large corn or soybean yield response to starter and broadcast P application are likely with low STP levels.

Download or read book Improving Potassium Recommendations for Agricultural Crops written by T. Scott Murrell and published by Springer. This book was released on 2022 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book highlights concepts discussed at two international conferences that brought together world-renowned scientists to advance the science of potassium (K) recommendations for crops. There was general agreement that the potassium recommendations currently in general use are oversimplified, outdated, and jeopardize soil, plant, and human health. Accordingly, this book puts forward a significantly expanded K cycle that more accurately depicts K inputs, losses and transformations in soils. This new cycle serves as both the conceptual basis for the scientific discussions in this book and a framework upon which to build future improvements. Previously used approaches are critically reviewed and assessed, not only for their relevance to future enhancements, but also for their use as metrics of sustainability. An initial effort is made to link K nutrition in crops and K nutrition in humans. The book offers an invaluable asset for graduate students, educators, industry scientists, data scientists, and advanced agronomists.

Download or read book Evaluation of Long term Phosphorus Fertilizer Placement Rate and Source and Research in the U S Midwest written by Cristie LeAnne Edwards and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The appropriate management for phosphorus (P) fertilizer can have significant agronomic, economic, as well as environmental impact. Studies in Kansas have evaluated different management systems to determine best management practices (BMP). The first component of this dissertation is a comprehensive review of tillage system and P fertilizer placement interaction. This review included studies completed in the U.S. Midwest. Results of this review showed greater corn yields with conventional tillage and broadcast applications when soil test P levels (STP) were below 20 mg P kg−1. However, soybean yield was highest in no-till systems with broadcast P fertilizer applications. The second component if this dissertation was a long-term study conducted in Kansas to evaluate the effect of P fertilizer placement on corn and soybean production. Results showed that under strip-tillage, P fertilizer placement significantly affected corn growth, but, seldom resulted in yield response difference among placement methods. Phosphorus application as starter fertilizer at planting showed the most consistent yield response. In addition to the agronomic aspect of this study, the third component of this dissertation consisted of an economic analysis using partial budgets calculated using both fixed and varying prices and costs to compare management practices. With decreased application costs associated with deep banding in strip-tillage system, net returns are greater than broadcast applications. The highest net responses were observed with starter P fertilizer applications. The fourth component of this dissertation included a study evaluating the effects of chelated fertilizer on nutrients, such as P, Fe, Mn, and Zn in soybean. Results from our study showed that both ethylenediamine tetraacetic acid (EDTA)+P and hydroxyethyl ethylenediamine tetraacetic acid (HEDTA)+P resulted in greater concentrations and uptake of Fe and lower Mn uptake in soybean. However, the application of glucoheptonate (GCH)+P had no negative effect on Mn uptake compared to EDTA+P and HEDTA+P. Across locations, EDTA+P and HEDTA+P showed higher yield than GCH+P. The use of long-term studies and comprehensive reviews can provide a unique perspective and better understanding of the most appropriate BMPs for P fertilizer management. Many agronomic and environmental implications of P fertilizer management and the interactions with tillage systems and soils may only become noticeable after multiple years or in a variety of conditions.

Download or read book Long Term Effects of Phosphorus and Conservation Tillage Management on Crop Yield and Soil Phosphorus in Corn soybean Rotations written by Jacob Prater and published by . This book was released on 2007 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract not available.

Download or read book Dissertation Abstracts International written by and published by . This book was released on 1999 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Response of Corn Zea Mays L to Phosphorus Placement Methods Under No tillage and Conventional Tillage Systems written by D. Abugarshall Kai and published by . This book was released on 1990 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Conservation Tillage Systems and Management written by and published by Midwest Plan Service. This book was released on 1992 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fate of Fertilizer N in Conservation Tillage Systems of Corn and Corn soybean Rotations written by Mark A. Fairchild and published by . This book was released on 1993 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Fertilizer Placement on Corn and Soybean Growth and Yield Under No tillage and Conventional Tillage Systems written by Saloum S. Sacko and published by . This book was released on 1983 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Meetings Abstracts written by American Society of Agronomy and published by . This book was released on 1999 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quick Bibliography Series written by National Agricultural Library (U.S.). Reference Division and published by . This book was released on 1992 with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Station Bulletin written by and published by . This book was released on 1973 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quick Bibliography Series written by and published by . This book was released on 1976 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Managing Cover Crops Profitably 3rd Ed written by Andy Clark and published by DIANE Publishing. This book was released on 2008-07 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cover crops slow erosion, improve soil, smother weeds, enhance nutrient and moisture availability, help control many pests and bring a host of other benefits to your farm. At the same time, they can reduce costs, increase profits and even create new sources of income. You¿ll reap dividends on your cover crop investments for years, since their benefits accumulate over the long term. This book will help you find which ones are right for you. Captures farmer and other research results from the past ten years. The authors verified the info. from the 2nd ed., added new results and updated farmer profiles and research data, and added 2 chap. Includes maps and charts, detailed narratives about individual cover crop species, and chap. about aspects of cover cropping.