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Rozprawy doktorskie na temat „Fertilizer requirement”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Christianson, Jessica Anne. "Screening Hard Red Spring Wheat Cultivars for Reduced Phosphorus Fertilizer Requirement." Thesis, North Dakota State University, 2017. https://hdl.handle.net/10365/28685.

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Phosphorus (P) is a common macronutrient required for hard red spring (HRS) wheat (Triticum aestivum L.) growth and yield expression, and is a significant expense for farmers. The objective of this study was to screen 89 cultivars of historical, current, and pending HRS wheat genotypes for relative P requirement. The cultivars were grown in a greenhouse over two years, using four rates of sodium phosphate for a rate response to the fertilizer. The genotypes were assessed using the Klepper-Haun technique for Haun stage and tiller initiation, and the plant material was analyzed for total P. It w

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Ottman, M. J. "Nitrogen Fertilizer Requirement of Feed and Malting Barley Compared to Wheat, 2011." College of Agriculture, University of Arizona (Tucson, AZ), 2012. http://hdl.handle.net/10150/211153.

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Barley is generally thought to require less nitrogen fertilizer than wheat, but how much less has not been clearly documented. The purpose of this study is to compare the nitrogen fertilizer requirements of barley and wheat. A study was conducted at the Maricopa Agricultural Center testing the response of 2 durum wheats (Kronos and Havasu), 2 bread wheats (Yecora Rojo and Joaquin), 2 feed barleys (Baretta and Nebula), and 2 malting barleys (Conrad and Moravian 69) to 7 rates of nitrogen fertilizer (0, 30, 60, 90, 120, 150, and 180 lbs N/acre). The surface soil was relatively high in nitrate at

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3

Shreckhise, Jacob Hamilton. "Phosphorus Requirement and Chemical Fate in Containerized Nursery Crop Production." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/83893.

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Environmental contamination issues related to phosphorus (P) in surface waters substantiates the need to identify minimally-sufficient P fertilization amounts for production of containerized nursery crops and better understand the effect of routine amendments (i.e., dolomite [DL] and micronutrient fertilizer [MF]) added to pine bark substrates on chemical fate of P fertilizer. Four studies were conducted to accomplish two overarching objectives: 1) determine the minimum P fertilization amount and corresponding pore-water P concentration needed to achieve maximal growth of common containerized

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4

Stroehlein, J. L., Cathy Creekmore, M. Janet, S. K. Ahmed, B. B. Taylor, and Sam Stedman. "Drip Irrigation Studies on Fertilizer Requirements for Cotton at Stanfield." College of Agriculture, University of Arizona (Tucson, AZ), 1985. http://hdl.handle.net/10150/204050.

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5

Norrish, Shane A., University of Western Sydney, of Science Technology and Environment College, and School of Environment and Agriculture. "Soil and water interactions controlling wheat crop response to phosphorus fertiliser in north-western New South Wales." THESIS_CSTE_EAG_Norrish_S.xml, 2003. http://handle.uws.edu.au:8081/1959.7/613.

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This thesis examines the response to P fertiliser by wheat crops growing in the vertosol soils of the low rainfall areas of the northern grain zone of eastern Australia. Farmers in this region depend on water accumulated from rainfall over a fallow period and stored in the subsoil to increase wheat grain yield beyond that normally achievable from in-crop rainfall and to decrease the production risks due to rainfall variability. The large variability in stored water, seasonal rainfall and subsoil properties result in extremely varied yield and yield responses to P fertiliser between seasons and

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6

Janat, Mohamad Mussaddak. "Phosphorus fractions, movement and fertilizer requirements of grapes grown on White House soil." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184754.

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A two-year fertilizer study on a mature vineyard of Vita vinifera, C. V. Cabernet Sauvignon and Sauvignon blanc, has been conducted on White House sandy loam (fine, mixed, thermic Ustollic Haplargid), at Page Ranch, International Agricultural Center. Furthermore, eleven different varieties grown at Page Ranch and treated with different levels of nitrogen fertilizer were tested for total P content in plant tissue and NO₃-N. Moreover, in another site with similar soil, a Cabernet Sauvignon grown at the Vina Sonoita Vineyard was treated with both soil and foliar applications of P fertilizer, and

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7

Thompson, Thomas L., Scott A. White, and Ayako Kusakabe. "Nitrogen and Phosphorus Fertilizer Requirements for Young, Bearing Microsprinkler-Irrigated Citrus, 2005 Report." College of Agriculture, University of Arizona (Tucson, AZ), 2004. http://hdl.handle.net/10150/223676.

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Higher nutrient and water use efficiency are possible with microsprinkler-irrigated citrus compared to flood-irrigated citrus. Therefore, new N and P fertilizer recommendations are needed for microsprinkler-irrigated citrus. The objectives of these experiments were to i) determine the effects of N applications on tree growth, fruit yield, fruit and juice quality, and N and P removal in fruit for microsprinkler-irrigated navel oranges; ii) determine the effects of P applications on tree growth, fruit yield, fruit and juice quality, and N and P removal in fruit, and iii) develop Best Management

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8

Yang, Dongsheng. "The response of two eucalypt subspecies to water stress and fertilizer at early seedling stage." Thesis, Canberra, ACT : The Australian National University, 1987. http://hdl.handle.net/1885/140223.

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9

Doerge, T. A., and M. J. Ottman. "Predicting Late Season Nitrogen Fertilizer Requirements of Irrigated Durum Wheat Using Stem Nitrate Analyses." College of Agriculture, University of Arizona (Tucson, AZ), 1990. http://hdl.handle.net/10150/201347.

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A field experiment was conducted on a Casa Grande sandy loam at the Maricopa Agricultural Center to 1) determine the optimum rates of late season N needed to achieve optimum yield and quality of irrigated dumm wheat in conjunction with varying rates of early season N, and 2) to evaluate the usefulness of stem NO₃⁻N analysis in predicting the late season N rates which optimize grain production but minimize the potential for nitrate pollution of groundwater. The application of 80, 195 and 350 lbs. N/a during vegetative growth resulted in wheat with deficient, sufficient and excessive N status at

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10

Trenholm, Leif. "Effects of water table depths and fertilizer treatments on yield and quality of tomatoes." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=22818.

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A field lysimeter experiment was conducted during 1993 and 1994 using 4 water table depths (WTD) (0.3, 0.6, 0.8, and 1.0 m), 13 treatment levels of calcium (0, 1500, and 2500 kg/ha) and potassium (0, 160, and 400 kg/ha), to determine their effects on tomato quality and yield. Plant parameters measured included: yield (fruit/plant), fruit height, maximum and minimum equatorial width, degree of catfacing (scale of 1 to 5), and sunscald (scale of 0 to 2).<br>Water table treatment was usually highly significant for the parameters measured at harvest. Largest height, equatorial width and yield of t

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11

Banks, Fiona Marjorie. "Genetic modification of photosynthesis to reduce plant requirements for nitrogen fertilisers." Thesis, Open University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301883.

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12

Miransari, Mahabadi Mohammad Reza. "Development of a nitrogen soil test for fertilizer requirements for corn and wheat production in Quebec." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23415.

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One must consider the effects of both soil N and fertilizer N, if rates of N-fertilizer application are to be optimized and NO$ sb3 sp-$ leaching into groundwater be controlled. Objectives were (1) to determine soil $ rm NO sb3 sp-$-N and NH$ sb4 sp+$-N, soil total N, and N fertilizer levels and corn and wheat yields; and, (2) to determine soil sampling times and depths for N analyses that correlated with yields and fertilizer N response. Soil samples taken at seeding and postseeding were analyzed for NH$ sb4 sp+$-N and NO$ sb3 sp-$-N, and for total N in 29 wheat sites and 44 corn sites fertil

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13

Refay, Yahya Ali. "The influence of variable amounts of irrigation water and nitrogen fertilizer and their interaction on the development, growth and nitrogen uptake of grain orghum." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184677.

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The influence of variable amounts of irrigation water and nitrogen fertilizer and their interaction on the development, growth, grain yield and nitrogen uptake of grain sorghum were studied under monocrop (May 21 planting) and simulated double crop (July 1 planting) in the 1985 growing season and under monocrop in the 1986 growing season. Six grain sorghum hybrids, three of which had a higher grain yielding ability and the other three with a lower grain in yielding ability, were used in this study conducted at the University of Arizona, Marana Agricultural Center. All six hybrids were grown un

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14

Sullivan, Preston. "Rye and vetch intercrops for reducing corn in fertilizer requirements and providing ground cover in the Mid-Atlantic region." Diss., Virginia Tech, 1990. http://hdl.handle.net/10919/39795.

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15

Doerge, T. A., T. C. Knowles, L. Clark, and E. Carpenter. "Effects of Early Season Nitrogen Rates on Stem Nitrate Levels and Nitrogen Fertilizer Requirements During Grain Filling for Irrigated Durum Wheat." College of Agriculture, University of Arizona (Tucson, AZ), 1989. http://hdl.handle.net/10150/201074.

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A field experiment was conducted on a Pima clay loam at the Safford Agricultural Center to: 1) determine the optimum rates of late season N needed to achieve optimum yield and quality of irrigated durum wheat in conjunction with varying rates of early season N; and 2) evaluate the usefulness of stern NO₃-N analysis in predicting the late season N rates which optimize grain production but minimize the potential for nitrate pollution of groundwater. The application of 75, 175 and 350 lbs. N/a during vegetative growth resulted in wheat with deficient, sufficient and excessive N status at the boot

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16

Joubert, Jorika. "The effect of different water and nutrient management strategies on the calcium content in apple fruit." Thesis, Link to the online version, 2007. http://hdl.handle.net/10019/395.

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17

Flores, Eduardo Fiorin. "Análise de máquinas agrícolas distribuidoras de fertilizantes segundo requisitos projetuais." Universidade Federal de Santa Maria, 2008. http://repositorio.ufsm.br/handle/1/7503.

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The Brazilian agriculture develops year by year. Nowadays, it is noticed that studies addressed for a constant increase for an implantations of technological systems in machineries and management of rural properties are accomplished, offering this way options in that the technology applied in a property can provide better results in production, in quantity, in quality, in cost for agricultures implantations, and in structuring of the soil focusing the environment. The applied technology can allow a variation of the dosage in elapsing of cultivation applying the dose already recommended for ea

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18

Vincendeau, Marie-Laure. "Etude experimentale de la fertilite des eaux des milieux conchylicoles : influence de l'excretion des huitres et des palourdes sur la production des diatomees dominantes." Paris 6, 1987. http://www.theses.fr/1987PA066661.

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L'impact de l'excretion de mollusques bivalves sur la croissance d'algues unicellulaires dans les zones conchylicoles est etudie experimentalement. L'huitre crassostrea gigas thunberg et la palourde ruditapes philippinarum (adams et reeve), mises en stabulation in vitro, enrichissent l'eau de mer en azote et en phosphore sous les formes minerales et organiques dissoutes dont les proportions relatives varient selon les saisons, en fonction de facteurs externes et internes propres aux mollusques, qui agissent simultanement. L'ammoniaque est abondamment excrete au printemps par les huitres et en

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19

Chakwizira, Emmanuel. "Growth and development of 'Pasja' and kale crops grown with two methods and four rates of phosphorus (P) application : a thesis submitted in partial fulfilment of the requirements for the degree of Masters [i.e. Master] of Agricultural Science at Lincoln University /." Diss., Lincoln University, 2008. http://hdl.handle.net/10182/929.

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*‘Pasja’ (Brassica campestris x napus) and kale (Brassica oleracea var. acephala L.) were grown at Lincoln, Canterbury, New Zealand in 2008 with different levels of phosphorus (P) fertiliser. Banded or broadcast P fertiliser was applied at 0, 20, 40 and 60 kg P/ha at establishment. Total dry matter (DM) production, the proportion of the leaf and stem and leaf area development were measured over time and related to the biophysical environment. For ‘Pasja’, final DM increased with P rate from 3730 kg DM/ha to ~4900 kg DM/ha at 60 kg P/ha. For kale the increase was from 8710 kg DM/ha for the cont

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20

Lei, Hsin-Yi, and 雷欣怡. "Changes of Mineral Composition and Fertilizer Requirement of Phalaenopsis during Reproductive Stages." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/78794192756877765177.

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碩士<br>國立臺灣大學<br>園藝學研究所<br>95<br>Summary To understand the changes of mineral composition in Phalaenopsis amabilis var formosa during reproductive stages. Forcing treatment of Phal. amabilis var formosa was conducted in a natural-light phytotron at day/night temperature of 25/20℃ at National Taiwan University (Taipei, Taiwan.) Through periodically sampling and mineral composition analysis. Fourteen days after forcing treatment, the concentration and content of nitrogen, phosphorus, potassium, magnesium, manganese, and zinc in upper leaves remained constant or in decrease, while increased in low

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21

Liu, Yi-Ling, and 劉怡伶. "Screening of fluazifop-tolerant and -susceptible rice mutants, and their agronomic traits and requirement for nitrogen fertilizer." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/77213433073982471143.

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碩士<br>國立中興大學<br>農藝學系所<br>101<br>In order to compare the sensitivities of Indica- and Japonica-type rice to fluazifop, dose-responses to fluazifop based on seed germination, radicle elongation and seedling growth were analyzed. Experimental results showed that both types of rice had similar sensitivity to this herbicide. In this study, tolerant (T) line 61, 467 and 736, as well as susceptible (S) line 174, 196 and 264 were selected from 654 rice mutants (M6 generation) pool, which were mutated from Indica-type cv. IR64 by NaN3. However, further comparison of fluazifop tolerance (based on chloro

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22

LIANG, GUAN-CHYUN, and 梁冠群. "Phosphorus release characteristics of some Taiwan agricultural soils and phosphorus fertilizer requirement recommendation by two-step adjusted method." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/56844958647733591909.

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23

Ali, Safdar. "Growth, yield and water use of rainfed wheat and maize influenced by tillage and fertilizer in Pothwar, Pakistan." Thesis, 1993. http://hdl.handle.net/1957/35387.

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24

Malone, Elizabeth Sue. "Effect of residual nitrate in soil profiles on the nitrogen fertilizer requirements of corn." 1986. http://catalog.hathitrust.org/api/volumes/oclc/14928592.html.

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25

Norrish, Shane A. "Soil and water interactions controlling wheat crop response to phosphorus fertiliser in north-western New South Wales." Thesis, 2003. http://handle.uws.edu.au:8081/1959.7/613.

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This thesis examines the response to P fertiliser by wheat crops growing in the vertosol soils of the low rainfall areas of the northern grain zone of eastern Australia. Farmers in this region depend on water accumulated from rainfall over a fallow period and stored in the subsoil to increase wheat grain yield beyond that normally achievable from in-crop rainfall and to decrease the production risks due to rainfall variability. The large variability in stored water, seasonal rainfall and subsoil properties result in extremely varied yield and yield responses to P fertiliser between seasons and

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26

Holzapfel, Christopher Brian. "Estimating nitrogen fertilizer requirements of canola (Brassica napus L.) using sensor-based estimates of yield potential and crop response to nitrogen." 2008. http://hdl.handle.net/1993/2996.

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The feasibility of using optical sensors and non-nitrogen limiting reference crops to determine post-emergent nitrogen fertilizer requirements of canola was evaluated. Normalized difference vegetation index was well suited for estimating yield potential and nitrogen status. Although sensor-based nitrogen management was generally agronomically feasible for canola, the economic benefits of doing so remain uncertain because of the added cost of applying post-emergent nitrogen.<br>February 2008

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27

Shaw, Scott Robert. "Phosphate rock fertilisers to enhance soil P status and P nutrition on organic cropping farms : a thesis presented in partial fulfilment of the requirements for the degree of Master of Plant Science at Massey University." 2009. http://hdl.handle.net/10179/1335.

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The soils used by the East Coast Organic Producers Trust (ECOPT; the grower group that this study is targeted towards) have exceptionally low soil Olsen P concentrations (ca. 6 mg/L). These and other limitations (e.g. poor weed and pest and disease control) result in many ECOPT growers being unable to produce economic yields on anything other than small scale gardens. Fertilisers and manures are seldom used by these growers, which exacerbates the problem. Thus, the object of this research was to provide information to ECOPT on which fertilisers and application strategies would provide the best

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28

Cichota, Rogerio. "Modelling sulphate dynamics in soils : the effect of ion-pair adsorption : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Soil Science at Massey University." 2007. http://hdl.handle.net/10179/1443.

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Sulphur is an important nutrient to plants, and reports of its deficiency have been increasing worldwide. Sulphur starvation causes losses in both yield and quality, and it reduces nitrogen use efficiency of plants. As the timing for fertilisation can be decisive for avoiding deleterious effects, improvements in the description of the sulphur balance in fields are a valuable contribution for assisting fertiliser management. Sulphate is the most important inorganic form of sulphur in soils. Being the mobile form, sulphate is readily available for plants, and also prone to be leached. Therefore

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29

Lawrence, Hayden George. "Adoption of precision agriculture technologies for fertiliser placement in New Zealand : a thesis presented in partial fulfilment of the requirements of the degree of Doctor of Philosophy in Agricultural Engineering at Massey University, Palmerston North, New Zealand." 2007. http://hdl.handle.net/10179/1429.

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Major agronomic and economic losses are caused by inaccurate application of nutrients from ground based spreading vehicles. These losses come from both over and under application of fertiliser resulting from such practices as driving at inappropriate bout widths. This work reviewed current spreader testing procedures; compared the performance of international test methodologies and evaluated the use of a digital image processing program to perform spreader testing. Methods to evaluate field performance were developed; this analysis of field application was used to calculate the economic effect

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30

Liu, Qianhe. "Rhizosphere processes influencing soil and fertilizer phosphorus availability to Pinus radiata : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Soil Science at Massey University, Palmerston North, New Zealand." 2005. http://hdl.handle.net/10179/1669.

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Production of Pinus radiata is a major contributor to New Zealand's economy and new plantings are a valuable carbon sink. Phosphorus (P) deficiency and high P fixing capacity of some volcanic ash soils (e.g. Allophanic Soil) may constrain radiata productivity. This thesis investigates the role of ectomycorrhizal (ECM) root processes in the acquisition of P by P. radiata fiom native soil and soil fertilised with two reactive phosphate rock (RPR) fertilisers. The application of finely-divided RPRs to a P deficient Allophanic Soil significantly increased P. radiata seedling growth and P uptake in

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31

Ravaie, A. Arivin. "Understorey effects on phosphorus fertiliser response of second-rotation Pinus radiata : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Soil Science at Massey University, Palmerston North, New Zealand." 2004. http://hdl.handle.net/10179/1748.

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The current silvicultural regimes of Pinus radiata plantations in New Zealand with wider initial tree spacings have created the potential for increased growth of understorey vegetation. A consequence of this is that the response of P. radiata to P fertiliser is expected to be more influenced by the interaction between the P fertiliser, the tree and the understorey vegetation than was the case in the past. The objectives of this study were to investigate the influence of different rates of a soluble and a sparingly-soluble P fertiliser (Triple superphosphate and Ben-Geurier phosphate rock) and

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32

Aslam, Tehseen. "Investigations on growth and P uptake characteristics of maize and sweet corn as influenced by soil P status : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy (Ph. D.) (Plant & soil science), Institute of Natural Resources, Massey University, Palmerston North, New Zealand." 2005. http://hdl.handle.net/10179/1587.

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Despite being different cultivars of the same plant species (Zea mays L.), maize and sweet corn have contrasting P fertiliser recommendations in New Zealand, that are reflected in different target Olsen P values of 10-15 mg P/kg soil for optimum maize growth and 26-35 mg P/kg soil for optimum sweet corn growth. Three key hypotheses were developed in this study to explain why these differences may exist: i) maize and sweet corn differ in their responsiveness to P fertiliser i.e. maize is more internally P efficient and requires less P than sweet corn to grow, ii) both cultivars differ in extern

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33

Singh, Jagrati. "The role of inhibitors in mitigating nitrogen losses from cattle urine and nitrogen fertiliser inputs in pastures : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy (Ph. D.) in Soil Science at Massey University, Palmerston North, New Zealand." 2006. http://hdl.handle.net/10179/1483.

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The major land use in New Zealand is pastoral farming of sheep and cattle. In intensively grazed dairy-pasture systems, animals graze on nitrogen (N)-rich legume-based pastures, but do not efficiently utilize the N they ingest. On average only 10.5% of the N in forage-based animal feed is converted into milk and the remainder is excreted in dung and urine. In the pastures, a cow urine patch can typically contain up to 1000 kg N ha-1. Nitrogen input, either in the form of cow urine or fertilizer, often exceeds immediate plant requirements and hence is susceptible to losses as ammonia (NH3) vola

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