Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 146 for “"No Till"”.
-
No-Till Tomato Production
Tillage increases erosion rates and diminishes the quality of soils but has traditionally been a way to manage weeds and prepare a seedbed. No-till vegetable production can ameliorate the ill-effects of tillage in an economically effective way but has not been studied much in California. The …
-
No-till establishment of switchgrass and Caucasian bluestem
… the influence of atrazine [2-chloro·4(ethylarnino)-s-triazine] and carbofuran on establishment of switchgrass (Panicum virgatum L.) and Caucasian bluestem [Boyhtiochloa caucasica (Trin.) C. E. Hubbard]. Treatments of carbofuran at 0 and 1.1 atrazine/ha placed in the row with the seed and of …
-
Evaluation of herbicides for no-till corn establishment
… evaluate HOE-O661 (glufosinate) [ammonium-(3-amino-3-carboxypropyl )-methyl phosphinate], cyanazine (2-[[4-chloro-6-(ethylamino )-s-triazin-2-yl]amino]-2-methyl propionitrile)), glyphosate [N-(phosphonomethyl)glycine] and paraquat (1,1'-dimethyl 4,4'-bipyridinium ion) for the control of …
-
Starter Fertilizers for No-Till and Minimum-Till Corn
In a greenhouse study, the risk of injury from seed-placed fertilizers increased when soil temperatures increased from 61 to 67$\sp\circ$F. Wetting the root zone to field capacity within 48 hours after planting enhanced the effectiveness of seed-placed fertilizers by increasing early plant growth …
-
Nitrogen Management in No-till Winter Wheat Production Systems
… and timing is critical to improve yields and economic sustainability for no-till winter wheat (Triticum aestivum L.) in the Virginia Coastal Plain. Little data are available evaluating N management strategies, optimum N rate prediction methods, or potential NO3 leaching under no-till wheat in …
-
No-Till Vegetable Production at the Cal Poly Organic Farm
Tillage and subsequent bare soil have been linked to erosion, nutrient leaching, reduced biological diversity, loss of organic matter, and release of CO2 into the atmosphere (Brady and Weil, 2004). The usefulness of an organic no-till system for transplanted vegetables was explored over two growing …
-
Surface application vs. incorporation of limestone for no-till alfalfa production
No-till alfalfa (Medicago sativa L.) establishment is the only environmentally sound procedure for alfalfa production on erodable land. Surface limestone application is the only reasonable method of placement in no-til1 systems with pH below 6.5. The purpose of this research was to evaluate surface …
-
Avian breeding ecology in soybean fields: does no-till provide any benefits?
… communities. Previous research has shown that tillage regimes can affect the suitability of row crop fields as wildlife habitat. Originally created as a soil conservation measure, use of no-till agriculture is increasing in areas of intensive row crop production. Nonetheless, it is not yet …
-
Between-row mower design for weed control in organically grown no-till soybeans
Weeds are a major challenge in organic no-till soybean production. They impair crop growth and result in yield loss. Innovative weed control methods need to be developed and experimented with in organic no-till agriculture to reduce weed density and improve organic yield. In 2017, mowing between …
-
Evaluation of Nitrogen Sources, Starter Fertilizers, and Amendments for No-Till Corn Production
No-till agricultural production creates a decidedly different soil environment than a conventional system that receives annual tillage, which presents challenges to the management of nitrogen (N) fertility. Two on-farm studies were conducted to evaluate N fertilizer sources, starter fertilizers, …
-
Using Winter Annual Cover Crops in a Virginia No-till Cotton Production System
… hirsutum</i> L.) is a low residue crop, that may not provide sufficient surface residue to reduce erosion and protect the soil. A winter annual cover crop could alleviate erosion between cotton crops. Field experiments were conducted to evaluate selected winter annual cover crops for biomass …
-
Development of Nitrogen rate Recommendations for No-till Dryland Grain Sorghum in Virginia
… N fertilizer recommendations for dryland no-tillage grain sorghum (Sorghum bicolor L. Moench) production. The objectives of this study were: (i) to determine the optimum rate of band-placed starter N fertilizer needed in combination with side-dress N applications to achieve economic grain …
-
Continuous No-till Management: Implications for Soil Quality, Carbon Sequestration, and Nitrogen Conservation
No-till management for agronomic crop production is recognized as an effective practice to regain a portion of soil organic matter lost following decades of cultivation. Increasing soil organic matter sequesters C, conserves organic N and concomitantly improves soil quality. Objectives of this …
-
The diffusion of no-till corn information and adoption in selected counties in Virginia
… sources used prior to the adoption of no-till corn production, the time pattern of the adoption, and the changes caused by the adoption of the no-till corn method were investigated. A mail questionnaire was utilized for data collection. Farm journals were found to be the major source of …
-
Integration of High Residue/No-till and Farmscaping Systems in Organic Production of Broccoli
… cover-cropping production, especially with no-till systems, reduction of nitrogen availability to the main crop and increase in weed and pest pressure may occur. In 2004-2005, summer and fall broccoli (Brassica oleraceae L. Botrytis Group) crops were grown in twin rows on permanent …
-
Influence of Transplanter Modification and Previous Crop on the Production of No-Till Dark Tobacco
… been produced using<br />conventional tillage practices. Soil is cultivated multiple times throughout a growing season leading to an increased incidence of soil erosion. No-till systems have been growing in popularity with the advent of new technology that has enabled the practice to be …
-
Weed management in conventional, no-till, and transgenic corn with mesotrione combinations and other herbicides
… dioxygenase. Mesotrione applied PRE did not adequately control common lambsquarters (Chenopodium album L.), smooth pigweed (Amaranthus hybridus L.), common ragweed (Ambrosia artemisiifolia L.), or morningglory species (Ipomoea spp.) in conventional tillage corn, but control of these weeds …
-
Impacts and correction of potassium deficiency in no-till and strip-till soybean and corn production
… seen in soybeans (Glycine max (L.) Merr.) under no-till and strip-till production systems are impacting soybean yields, and if so, what fertilizer application practices including: rate of K application; broadcast or deep band methods of application; and the use of starter fertilizer at planting; …
-
Is Everything Connected? Following the Predators, Pests, and Plants Within a No-Till, Western Montana Agroecosystem
… with hedgerows, living mulches, or minimum tillage activities in hopes of retaining populations of beneficial, predatory insects that may decrease the need for pesticide use. The purpose of this research was twofold. First, this on-farm research assessed the population and activity of six …
-
Is Everything Connected? Following the Predators, Pests, and Plants Within a No-Till, Western Montana Agroecosystem
… with hedgerows, living mulches, or minimum tillage activities in hopes of retaining populations of beneficial, predatory insects that may decrease the need for pesticide use. The purpose of this research was twofold. First, this on-farm research assessed the population and activity of six …
Page 1 of 8