Product Description
This digital document is a journal article from Agriculture, Ecosystems and Environment, published by Elsevier in 2005. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
Paddy fields are major sources of the global methane (CH"4) emission. Water management of paddy fields affects rice yield and CH"4 emission. There is need for improvement in the management to achieve a balance between them. We suggest the water management based on soil redox potential (Eh), which was named Eh control. The effects of Eh control on rice yield and CH"4 emission, and applicability to field conditions were considered by pot experiments. This study was carried out at a plastic film house in the Agricultural and Forestry Research Center, University of Tsukuba, Japan, in 2002. The effects of Eh control (EH) were compared with conventional management methods (continuous flooding [CF], midseason drainage [MD], and MD plus intermittent irrigation [IM]) for two kinds of soils. The drainage for Eh control, aim of which was not to reach -200mV, was carried out when the soil Eh decreased to -150mV. Then one or two days later, the soil was reflooded. The CH"4 emissions of MD, IM, and EH were 64, 26, and 17% of CF, respectively. However, the order of brown rice yield was as follows: IM > MD > CF > EH. With the drainage for Eh control, soil Eh increased to higher than 400mV several times, and this condition was maintained for up to one day. This excessive drying of the soil affected rice growth and yield of EH. To apply Eh control to field conditions, the upper limit of soil Eh must be controlled to avoid the excessive drying. Moreover, water demand of rice plants is necessary to be considered. ... Read more

Product Description
Irrigation development is an important means forachieving food self sufficiency by many arid andsemi-arid countries, in order to address the mainchallenge caused by food insecurity and waterscarcity. This will likely be difficult, becauseextensive area of irrigated lands have beenand are increasingly becoming degraded bysalinization and waterlogging resulting from overirrigation and other forms of poor agriculturalmanagement. This study attempted to evaluateirrigation water quality and its management in thecontext of soil salinization in Gumsellasairrigation scheme. The scheme got operational in1996, but farms have been facing danger of soilsalinization with in such short period. In order toidentify the cause and prognosis of this salinityproblem water and soil samples were analyzed in alaboratory for both dry and wet seasons. Salinitycontour maps of the scheme were also prepared forboth seasons. Currently practiced irrigationschedule for onion and maize were compared withCropWat simulated optimum irrigation scheduling.Researchers, students and farmers could potentialbenefit from this study. ... Read more

Product Description
This digital document is an article from Journal of Soil and Water Conservation, published by Soil & Water Conservation Society on March 1, 1994. The length of the article is 5140 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the supplier: The nitrogen requirement of farms is difficult to assess due to the different factors affecting availability of nitrogen in the soil and nitrogen added as fertilizer. Soil nitrate tests of the root zone up to 0.6 meter in depth prior to planting or in early June to a depth of 0.3 meter may be done. Although these methods have their limitations, the estimate of nitrogen in the soil will prevent overfertilization of the field. New plant sensing technologies coupled are being developed that may enhance fertilizer use efficiency.

Citation Details
Title: Nitrogen testing for optimum management. (Nutrient Management)
Author: D.H. Sander
Publication: Journal of Soil and Water Conservation (Refereed)
Date: March 1, 1994
Publisher: Soil & Water Conservation Society
Volume: v49Issue: n2Page: pS46(7)

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This digital document is an article from Journal of Soil and Water Conservation, published by Soil & Water Conservation Society on July 1, 2002. The length of the article is 6096 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

Citation Details
Title: How good is good enough.(water quality management)
Author: P. Heilman
Publication: Journal of Soil and Water Conservation (Refereed)
Date: July 1, 2002
Publisher: Soil & Water Conservation Society
Volume: 57Issue: 4Page: 92A(10)

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This digital document is an article from Journal of Soil and Water Conservation, published by Soil & Water Conservation Society on March 1, 1994. The length of the article is 4054 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the supplier: The state of Arizona has adopted the concept of best management practices that would effectively manage nitrogen application and enhance water quality near agricultural areas. Nitrogen fertilizer application was limited in amounts, timing and methods that would produce projected plant needs with maximum crop plant uptake. Water irrigation was also limited to minimize nitrogen loss. These regulations became effective in Arizona due to the support of environmental groups, regulatory agencies and the education of the regulated community.

Citation Details
Title: Best management practices meeting water quality goals. (Nutrient Management)
Author: J. Watson
Publication: Journal of Soil and Water Conservation (Refereed)
Date: March 1, 1994
Publisher: Soil & Water Conservation Society
Volume: v49Issue: n2Page: pS39(5)

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This digital document is an article from Journal of Soil and Water Conservation, published by Soil & Water Conservation Society on June 22, 1999. The length of the article is 1526 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

Citation Details
Title: Soil and Water Conservation is Essential for Ecosystem Management.
Author: Tony Prato
Publication: Journal of Soil and Water Conservation (Refereed)
Date: June 22, 1999
Publisher: Soil & Water Conservation Society
Volume: 54Issue: 3Page: 522

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This digital document is an article from Journal of Soil and Water Conservation, published by Soil & Water Conservation Society on March 1, 1994. The length of the article is 7080 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the supplier: Beef cattle feedlot manure can be used for land fertilization, aquaculture, reclamation of sandy and mined soils, methane gas production and refeeding, among others. Cattle feedlot owners should know the proper disposal and recycling of manure because it provides economic and environmental benefits. Land application of manure improves the physical properties of soil which eventually reduces erosion. Manure recycling, on the other hand, can provide feedlot owners an additional source of income and reduces water and land pollution as a result of cattle feedlot manure runoff.

Citation Details
Title: Beef cattle feedlot manure management.
Author: Bahman Eghball
Publication: Journal of Soil and Water Conservation (Refereed)
Date: March 1, 1994
Publisher: Soil & Water Conservation Society
Volume: v49Issue: n2Page: p113(10)

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Product Description
This digital document is an article from Journal of Soil and Water Conservation, published by Soil & Water Conservation Society on March 1, 1994. The length of the article is 901 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the supplier: Excessive nutrient deposition into estuaries, coastal waters, lakes and rivers has polluted these natural resources. Nutrients such as nitrogen and phosphorus come from farm runoffs, treatment plant sludge, municipal and industrial effluent, legumes and crop residues, irrigation water and atmospheric decomposition. These excess nutrients should be managed in a manner that would not adversely affect the environment while sustaining economic viability.

Citation Details
Title: EPA's perspective - you need to protect water quality. (Nutrient Management)
Author: Thomas E. Davenport
Publication: Journal of Soil and Water Conservation (Refereed)
Date: March 1, 1994
Publisher: Soil & Water Conservation Society
Volume: v49Issue: n2Page: pS14(2)

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This digital document is an article from Journal of Soil and Water Conservation, published by Soil & Water Conservation Society on March 1, 2003. The length of the article is 2564 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the author: The space age has now reached conservation. Within the next 10 years there could be more than 40 new land viewing satellites. And major changes are occurring in remote sensing technology, impacting conservation in several significant ways--more data and variety of data available; more timely information; and more cost efficient access to data. For conservation decision-makers, this means that remote sensing can provide much greater detail of the land surface, repeat data, and the ability to merge data sets.

Citation Details
Title: Remote sensing changing natural resource management.
Author: Chris J. Johannsen
Publication: Journal of Soil and Water Conservation (Refereed)
Date: March 1, 2003
Publisher: Soil & Water Conservation Society
Volume: 58Issue: 2Page: 42A(4)

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This digital document is an article from Journal of Soil and Water Conservation, published by Soil & Water Conservation Society on July 1, 1997. The length of the article is 848 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the supplier: The Bureau of Land Management (BLM) is conducting over 1,200 projects in 1997 to rejuvenate such public land domains as stream channels, riparian areas and wetlands. Its ecological restoration projects are classified into five categories: riparian and stream channel rehabilitation, native plant restoration, wildlife habitat restoration, forest restoration, and disturbed land reclamation. BLM partners with several federal and state agencies as well as private landowners in these projects.

Citation Details
Title: Restoration examples. (ecological restoration projects of Bureau of Land Management)
Publication: Journal of Soil and Water Conservation (Refereed)
Date: July 1, 1997
Publisher: Soil & Water Conservation Society
Volume: v52Issue: n4Page: p228(1)

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Product Description
This digital document is an article from Journal of Soil and Water Conservation, published by Soil & Water Conservation Society on March 1, 1994. The length of the article is 1710 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the author: > 26 21

From the supplier: US Soil Conservation Service, University of Idaho, Agricultural Research Service, Idaho Soil Improvement Committee, private consultants, industry agronomists, fertilizer dealers and producers have coordinated to develop the Idaho's nutrient management specifications aimed at controlling nutrient contamination of groundwater by fertilizers. The specifications are voluntary and based on research done by the University of Idaho regarding fertilizer use.

Citation Details
Title: Nutrient management in Idaho. (Nutrient Management)
Author: R.L. Mahler
Publication: Journal of Soil and Water Conservation (Refereed)
Date: March 1, 1994
Publisher: Soil & Water Conservation Society
Volume: v49Issue: n2Page: pS89(4)

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Product Description
This digital document is an article from Journal of Soil and Water Conservation, published by Soil & Water Conservation Society on March 1, 1994. The length of the article is 1785 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the supplier: Nutrient management plans should be integrated into agricultural management systems to maintain productivity, improve environmental conditions and allow judicious use of available sources of nutrients. The management plans are important for farmers since these will help balance the nutrient needs of crops, protect groundwater resources and limit nitrogen loadings into streams and estuaries.

Citation Details
Title: Why nutrient management? (agricultural nutrient management) (Nutrient Management)
Author: Lynn R. Shuyler
Publication: Journal of Soil and Water Conservation (Refereed)
Date: March 1, 1994
Publisher: Soil & Water Conservation Society
Volume: v49Issue: n2Page: pS3(3)

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This digital document is an article from Journal of Soil and Water Conservation, published by Soil & Water Conservation Society on May 1, 1995. The length of the article is 7240 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the author: We analyzed 22 physical, /oiological, and chemical soil properties using adjacent fields from commercialfarms in New Zealand. Our objective was to measure the effects of hiodynamic, conventional, and continuous grass systems on soil quality. One set of three adjacent farm fields included a biodynamic vegetable field, a conventional vegetable field, and a 6iodynamic pasture field. A second set of three adjacent fatm f elds included a hiodynamic mixed (grain/sheep/heef)field, a conventional mixedfieil, and a hiodynamic pasturefield. The pasture fields had soils of higher hiological quaky fiQQ more organic matter, microhial activiy, and earthworms) than the soils of the lQQiodynamically or conventionally cropped fields. The 6iodynamic vegetahlefield had soil of higher physical, biological, and chemical qually than its conventional neighloor. When converting the chemical and hiological data from a mass to a volume 6asis, most statistically significant differences remained in the vegetable/pasture data set, whereas many 6ecarne nonsignificant in the mixed/pasture data set. Presenting data on a volume basis per unit given surface depth (like 0 to 10 cm in this study) may penalize a farm with lower lQQulk densities and thicker topsoils in comparison to an adjacent farm with higher 6ulk densities and thinner topsoils. We recommend calculating soil measurements on a volume basis per unit of topsoil depth (complete A horizon) or per unit of solum depth (A and B horizons). Whether data are presented on a mass or volume hasis, biological or ecological significance should he emphasized rather than statistical significance.

From the supplier: The influence of conventional, biodynamic and continuous grass systems on soil quality was studied by means of volumetric and gravimetric measurements. Experiments were carried out wherein 22 physical, biological and chemical soil properties were analyzed using samples from commercial farms in New Zealand. Results indicate that biological or ecological significance rather than statistical significance should be given emphasis in such experiments to obtain reliable results.

Citation Details
Title: Significance of gravimetric versus volumetric measurements of soil quality under biodynamic, conventional, and continuous grass management.
Author: John P. Reganold
Publication: Journal of Soil and Water Conservation (Refereed)
Date: May 1, 1995
Publisher: Soil & Water Conservation Society
Volume: v50Issue: n3Page: p298(8)

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This digital document is an article from Journal of Soil and Water Conservation, published by Soil & Water Conservation Society on September 1, 1995. The length of the article is 3231 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the supplier: The Dept. of Agriculture's Agricultural Research Service has made its Revised Universal Soil Loss Equation (RUSLE) technology available for implementation since 1992. Since that time, a number of unexpected problems have surfaced in the full-scale implementation of RUSLE. For example, there is a lack of consistent and reliable databases for RUSLE and other models. Many entities are also reluctant to pay for technology developed by the federal government at taxpayer's expense.

Citation Details
Title: Lessons learned in RUSLE technology transfer and implementation. (Revised Universal Soil Loss Equation)(Special Issue: Water Research and Management in Semiarid Environments)
Author: T.J. Kautza
Publication: Journal of Soil and Water Conservation (Refereed)
Date: September 1, 1995
Publisher: Soil & Water Conservation Society
Volume: v50Issue: n5Page: p490(4)

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Product Description
This digital document is an article from Journal of Soil and Water Conservation, published by Soil & Water Conservation Society on March 1, 1994. The length of the article is 7663 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the supplier: Agricultural nonpoint sources of phosphorus have become major pollution causes in estuaries, lakes and reservoirs. Phosphorus is derived from commercial fertilizer and animal manure application. Water quality can be restored and protected by nutrient management. The soil should be tested for phosphorus levels and addition of the nutrient should only be added to areas deficient with phosphorus. Other management options are no-till farming, vegetative filter strips, terracing and other methods that would prevent phosphorus runoffs.

Citation Details
Title: Minimizing surface water eutrophication from agriculture by phosphorus management. (Nutrient Management)
Author: T.C. Daniel
Publication: Journal of Soil and Water Conservation (Refereed)
Date: March 1, 1994
Publisher: Soil & Water Conservation Society
Volume: v49Issue: n2Page: pS30(9)

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Product Description
This digital document is an article from Journal of Soil and Water Conservation, published by Soil & Water Conservation Society on March 1, 1994. The length of the article is 716 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the supplier: The Coastal Zone Act Reauthorization Amendments of 1990 contains a section which would require states and territories to follow nutrient management measures to address water quality problems. The states are required to submit 'Coastal Nonpoint Pollution Control Programs' to the EPA and the National Oceanic Atmospheric Administration for approval. The nutrient management measure of the EPA to stem nonpoint pollution of coastal waters is presented.

Citation Details
Title: Nutrient management measure to be implemented in the coastal zone. (Nutrient Management)
Author: Anne C. Weinberg
Publication: Journal of Soil and Water Conservation (Refereed)
Date: March 1, 1994
Publisher: Soil & Water Conservation Society
Volume: v49Issue: n2Page: pS71(2)

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Product Description
This digital document is an article from Journal of Soil and Water Conservation, published by Soil & Water Conservation Society on March 1, 1994. The length of the article is 1841 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the supplier: Nutrient management consists of balancing nutrient needs of a crop system with the nutrient resources available. The management plan is effective in restoring and protecting the quality of water. Farmers and land users should learn more about nutrient management or seek the opinion of nutrient management experts. Federal, state and local governments may also issue policies that would enforce nutrient management to ensure water quality protection.

Citation Details
Title: Nutrient management, an integrated component for water quality protection. (Nutrient Management)
Author: Lynn R. Shuyler
Publication: Journal of Soil and Water Conservation (Refereed)
Date: March 1, 1994
Publisher: Soil & Water Conservation Society
Volume: v49Issue: n2Page: pS5(2)

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Product Description
This digital document is an article from Journal of Soil and Water Conservation, published by Soil & Water Conservation Society on March 1, 1994. The length of the article is 1642 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the supplier: The second Chesapeake Bay Agreement was signed by the governors of Maryland, Pennsylvania and Virginia and the mayor of Washington, DC, to reduce nutrient loading of the Chesapeake Bay by 40%. Each state developed its own nutrient management program to reduce nitrogen and phosphorus loadings in the bay. However, these programs adhere to uniform criteria and standards. Continuous cooperation among the states in developing research and program strategies would result in the environmental protection of Chesapeake Bay.

Citation Details
Title: Evolution of nutrient management in the Chesapeake Bay region. (Nutrient Management)
Author: Russ Perkinson
Publication: Journal of Soil and Water Conservation (Refereed)
Date: March 1, 1994
Publisher: Soil & Water Conservation Society
Volume: v49Issue: n2Page: pS87(2)

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