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Artículos de revistas sobre el tema "Crops and nitrogen"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 1 de agosto de 2024

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1

KUMAR, YOGENDRA. "Nanofertilizers for enhancing nutrient use efficiency, crop productivity and economic returns in winter season crops of Rajasthan." Annals of Plant and Soil Research 22, no. 4 (November 4, 2020): 324–35. http://dx.doi.org/10.47815/apsr.2020.10001.

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The results of 600 on-farm trials with 8 crops conducted during winter season in different districts of Rajasthan have proved that the quantity of urea being applied by the farmers to supply nitrogen to the crops can be successfully reduced to half. The yields obtained with 50% less nitrogen plus 2 sprays of nano-nitrogen in standing crops gave yields higher than that applied in most of the 8 crops tested in these trials. Apart from this, effect of the Nano-Zn and Nano-Cu was also evaluated. As the deficiencies of these micronutrients were not universal like nitrogen, the significant responses

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2

Kubát, J., J. Klír, and D. Pova. "The dry nitrogen yields nitrogen uptake, and the efficacy on nitrogen fertilisation in long-term experiment in Prague." Plant, Soil and Environment 49, No. 8 (December 10, 2011): 337–45. http://dx.doi.org/10.17221/4134-pse.

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Long-term field experiments conducted under different soil and climate conditions and their databases provide invaluable information and are indispensable means in the study of the productivity and sustainability of the soil management systems. We evaluated the results of the dry matter yields of the main products obtained with four variants of organic and mineral fertilisation in three long-term field experiments established in 1955. The experiments differed in the cultivated crops. The period of evaluation was 12 and 16 years (1985&ndash;2000), respectively. The productivity of nine-year

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3

Yamagata, Makoto, and Noriharu Ae. "Nitrogen uptake response of crops to organic nitrogen." Soil Science and Plant Nutrition 42, no. 2 (June 1, 1996): 389–94. http://dx.doi.org/10.1080/00380768.1996.10415110.

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4

Tei, Francesco, Stefaan De Neve, Janjo de Haan, and Hanne Lakkenborg Kristensen. "Nitrogen management of vegetable crops." Agricultural Water Management 240 (October 2020): 106316. http://dx.doi.org/10.1016/j.agwat.2020.106316.

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5

Jensen, Erik Steen. "Nitrogen Accumulation and Residual Effects of Nitrogen Catch Crops." Acta Agriculturae Scandinavica 41, no. 4 (January 1991): 333–44. http://dx.doi.org/10.1080/00015129109439917.

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6

Gaskell, Mark, and Richard Smith. "Nitrogen Sources for Organic Vegetable Crops." HortTechnology 17, no. 4 (January 2007): 431–41. http://dx.doi.org/10.21273/horttech.17.4.431.

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Fertilization is the most expensive cultural practice for the increasing numbers of organic vegetable growers in the United States. Nitrogen (N) is the most important and costly nutrient to manage, and cost-effective N management practices are needed for efficient organic vegetable production. There is a wide array of organic N sources available, but they vary in cost, N content, and N availability. Compost and cover crops are commonly used sources of N for vegetables because they are relatively inexpensive and offer additional nutrients or soil improvement qualities in addition to N. Studies

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7

Barnett, Bobby D. "Nitrogen-Fixing Trees Benefit Rotation Crops." Journal of Forestry 84, no. 11 (November 1, 1986): 48–49. http://dx.doi.org/10.1093/jof/84.11.48.

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8

Balbinot Junior, Alvadi Antonio, Milton da Veiga, Anibal de Moraes, Adelino Pelissari, Álvaro Luiz Mafra, and Cristiano Dela Piccolla. "Winter pasture and cover crops and their effects on soil and summer grain crops." Pesquisa Agropecuária Brasileira 46, no. 10 (October 2011): 1357–63. http://dx.doi.org/10.1590/s0100-204x2011001000032.

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The objective of this work was to evaluate the effect of winter land use on the amount of residual straw, the physical soil properties and grain yields of maize, common bean and soybean summer crops cultivated in succession. The experiment was carried out in the North Plateau of Santa Catarina state, Brazil, from May 2006 to April 2010. Five strategies of land use in winter were evaluated: intercropping with black oat + ryegrass + vetch, without grazing and nitrogen (N) fertilization (intercropping cover); the same intercropping, with grazing and 100 kg ha-1 of N per year topdressing (pasture

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9

Ahmadi, Ahmad Yar. "Relations of Legumes with Soil Health and Succeeding Crops." Open Access Journal of Agricultural Research 8, no. 4 (2023): 1–9. http://dx.doi.org/10.23880/oajar-16000333.

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In recent decades, soil degradation has increased dramatically on a global scale. It is urgently necessary to promote food security and lessen the effects of climate change by restoring and maintaining the health of our soils. Improvements in soil structure have been demonstrated to help mitigate the effects of soil degradation, which is a crucial feature that influences soil health that is becoming more widely acknowledged. So the use of technologies and methods are important in this context. Growing of legume crops in cropping system is an option. Legumes possess a unique attribute known as

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10

ȘIMON, Alina, Adrian CECLAN, Florin RUSSU, Marius BĂRDAȘ, Felicia CHEȚAN, and Alin POPA. "INFLUENCE OF NP MINERAL FERTILIZATION ON SOYBEAN CROPS." LIFE SCIENCE AND SUSTAINABLE DEVELOPMENT 3, no. 1 (July 29, 2022): 84–90. http://dx.doi.org/10.58509/lssd.v3i1.171.

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Soybean is one of the most important sources of vegetable protein, having a great agronomic importance by fixing atmospheric nitrogen following symbiosis with bacteria of the genus Rhizobium. Bifactorial experience, of the AxB model A - phosphorus doses: P0; P40; P80; P120; P16 and B - nitrogen doses:N0; N25; N50; N75; N100, aims to identify the influence of these doses on the development of soybean cultivation. Although soybeans are a heavy consumer of nitrogen and phosphorus in the early stages of development, however, they do not react well to large amounts of nitrogen as they prevent the d

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11

Mangan, Francis X., and Stephen J. Herbert. "WINTER-KILLED LEGUMINOUS COVER CROPS FOR SWEET CORN." HortScience 27, no. 11 (November 1992): 1161f—1161. http://dx.doi.org/10.21273/hortsci.27.11.1161f.

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Field research was conducted in Deerfield, Mass. to study the effects of leguminous cover crops on sweet corn yield. Oat was planted alone and in combination with four leguminous cover crops August 8, 1990. Cover crop residue was disked once and sweet corn seeded April 23, 1991. Each cover crop combination had three rates of nitrogen added in two applications. Sweet corn seeded into stands of hairy vetch (Vicia villosa) yielded the highest of the cover crop combinations. All leguminous cover crop treatments yielded higher than oat alone or no cover crop when no synthetic nitrogen was added. Co

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12

Volynkina, O. V. "Duration of the Aftereffect of Mineral Fertilizers in the Experience of the Kurgan Research Institute." Агрохимия, no. 4 (April 1, 2023): 44–50. http://dx.doi.org/10.31857/s0002188123040154.

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The effect of nitrogen-phosphorus fertilizer for 5 rotations of a 4-field grain crop rotation in the stationary experiment of the Kurgan Research Institute was studied. Different nitrogen distribution between crop rotation crops was tested. When the entire crop rotation dose of nitrogen was applied to the first field, the fertilizer had an aftereffect on the yield of the next 3 crops. Similarly, when dividing the nitrogen dose into the 1st and 3rd fields, an increase in crop yields was noted in the 2nd and 4th crops. The different distribution of nitrogen between crop rotation crops gave simil

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13

Thilakarathna, Malinda S., Stephanie Serran, John Lauzon, Ken Janovicek, and Bill Deen. "Management of Manure Nitrogen Using Cover Crops." Agronomy Journal 107, no. 4 (July 2015): 1595–607. http://dx.doi.org/10.2134/agronj14.0634.

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14

Paparozzi, Ellen T. "NITROGEN AND SULFUR INTERACTION IN FLORICULTURAL CROPS." Acta Horticulturae, no. 481 (January 1999): 379–84. http://dx.doi.org/10.17660/actahortic.1999.481.44.

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15

Yan, Ming, Genxing Pan, Jocelyn M. Lavallee, and Richard T. Conant. "Rethinking sources of nitrogen to cereal crops." Global Change Biology 26, no. 1 (December 2, 2019): 191–99. http://dx.doi.org/10.1111/gcb.14908.

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16

Bot, Jacques Le, and Stéphane Adamowicz. "Nitrogen Nutrition and Use in Horticultural Crops." Journal of Crop Improvement 15, no. 2 (June 16, 2006): 323–67. http://dx.doi.org/10.1300/j411v15n02_10.

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17

Echeverría, H. E., C. A. Navarro, and F. H. Andrade. "Nitrogen nutrition of wheat following different crops." Journal of Agricultural Science 118, no. 2 (April 1992): 157–63. http://dx.doi.org/10.1017/s0021859600068738.

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SUMMARYA trial using a split-plot with blocks design was carried out at the INTA Balcarce Experimental Station, Argentina on a typic argiudol soil to evaluate N nutrition in wheat after different preceding crops and using two rates of N fertilization (0 and 90 kg N/ha).Wheat (Triticum aestivum), soyabean (Glycine max), sunflower (Helianthus annuus) and maize (Zea mays) were grown in different combinations for two successive years (1984/85 and 1985/86).No water stress was detected during either growing season. Nitrogen availability was altered by the previous crops grown, but the effect lasted

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18

Keulen, H., and W. Stol. "Quantitative aspects of nitrogen nutrition in crops." Fertilizer Research 27, no. 2-3 (March 1991): 151–60. http://dx.doi.org/10.1007/bf01051123.

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19

Rahn, C. R. "NITROGEN AND FIELD PRODUCTION OF VEGETABLE CROPS." Acta Horticulturae, no. 533 (June 2000): 361–70. http://dx.doi.org/10.17660/actahortic.2000.533.44.

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20

Sørensen, Jørn Nygaard, and Kristian Thorup-Kristensen. "Nitrogen effects of non-legume catch crops." Zeitschrift für Pflanzenernährung und Bodenkunde 156, no. 1 (1993): 55–59. http://dx.doi.org/10.1002/jpln.19931560109.

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21

Nakhone, Lenah N., and M. Ali Tabatabai. "Nitrogen mineralization of leguminous crops in soils." Journal of Plant Nutrition and Soil Science 171, no. 2 (April 2008): 231–41. http://dx.doi.org/10.1002/jpln.200625162.

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22

Heege, Hermann J., and Stefan Reusch. "Nitrogen and the Colour of the Crops." German Research 24, no. 2-3 (December 2002): 8–10. http://dx.doi.org/10.1002/germ.200290015.

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23

Iduna, Arduini, Cardelli Roberto, and Pana Silvia. "Biosolids affect the growth, nitrogen accumulation and nitrogen leaching of barley." Plant, Soil and Environment 64, No. 3 (March 21, 2018): 95–101. http://dx.doi.org/10.17221/745/2017-pse.

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Biosolids are organic fertilisers derived from treated and stabilised sewage sludge that increase soil fertility and supply nitrogen to crops over a long period, but can also increase the risk of nitrogen (N) leaching. In this work, spring barley was grown in lysimeters filled with soil amended with biosolids, and with and without mineral N fertilisation. Biomass and the N concentration and content of shoots and roots were determined at flowering and maturity, and the N remobilization was calculated during grain filling. Drainage water was collected and analysed for N leaching. Biosolids incre

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24

Haynes, R. J., R. J. Martin, and K. M. Goh. "Nitrogen fixation, accumulation of soil nitrogen and nitrogen balance for some field-grown legume crops." Field Crops Research 35, no. 2 (November 1993): 85–92. http://dx.doi.org/10.1016/0378-4290(93)90141-9.

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25

Papendick, Robert I., Lloyd F. Elliott, and James F. Power. "Alternative production systems to reduce nitrates in ground water." American Journal of Alternative Agriculture 2, no. 1 (1987): 19–24. http://dx.doi.org/10.1017/s0889189300001442.

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AbstractEvidence indicates a strong positive relationship between increases in nitrogen fertilizer use on cropland and nitrate concentrations in shallow ground water. This raises concern about the fate and efficiency of nitrogen fertilizer with current farming practices. Approximately 50 percent of the nitrogen fertilizer applied may be recovered by agronomic crops and 35 percent or less removed in the harvested grain of a crop such as corn. The residual nitrogen is subject to loss by several processes, one being leaching from the crop root zone. Alternative production systems that provide gro

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26

Volkohon, V. V., S. B. Dimova, K. I. Volkohon, L. M. Tokmakova, M. A. Zhurba, Y. M. Halep, N. P. Shtanko, and N. V. Lutsenko. "BIOLOGICAL ASPECTS OF CROPS FERTILIZING SYSTEMS." Agriciltural microbiology 22 (December 29, 2015): 13–29. http://dx.doi.org/10.35868/1997-3004.22.13-29.

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The process of nitrogen fixation and N2O emission in the system “soil – plant” was studied in the conditions of field stationary experiment on leached black soil when growing crops in short rotation crop succession (potato – barley – peas – winter wheat) in case of different fertilization systems and application of microbial agents. Using directivity indexes of processes of nitrogen biological transformation in agrocoenosis and economic calculations an environmental and economic rationale for fertilization was composed.

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27

Liu, Xiaoli, Qiuwen Chen, and Zhaoxia Zeng. "Study on nitrogen load reduction efficiency of agricultural conservation management in a small agricultural watershed." Water Science and Technology 69, no. 8 (February 11, 2014): 1689–96. http://dx.doi.org/10.2166/wst.2014.076.

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Different crops can generate different non-point source (NPS) loads because of their spatial topography heterogeneity and variable fertilization application rates. The objective of this study was to assess nitrogen NPS load reduction efficiency by spatially adjusting crop plantings as an agricultural conservation management (ACM) measure in a typical small agricultural watershed in the black soil region in northeast China. The assessment was undertaken using the Soil and Water Assessment Tool (SWAT). Results showed that lowland crops produce higher nitrogen NPS loads than those in highlands. I

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28

Ramazanova, R. Kh, S. I. Tanirbergenov, M. N. Poshanov, A. I. Suleimenova, A. K. Abay, and S. N. Duisekov. "Mineral nitrogen content in light serozem soils and the size of nitrogen emission under fertilizer appliciation." Pochvovedenie i agrokhimiya, no. 3 (October 15, 2023): 84–98. http://dx.doi.org/10.51886/1999-740x_2023_3_84.

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The article presents the results of studies on the impact of bioorganic fertilizers on the cultivation of winter wheat, sugar beet, and soybeans in irrigated light sierozems of southeastern Kazakhstan. The study focuses on the effects of these fertilizers on the mineral forms of nitrogen content and the size of N2O emissions from the soil. When applying leaf treatments of mineral and bioorganic fertilizers to cultivated crops, the nitrogen content in light sierozems is enhanced. The main sources of nutrition are easily hydrolyzable and nitrate nitrogen, which accounts for more than 80 %. The c

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29

Hellmuth, Rebecca, and George Hochmuth. "Managing Nitrogen Inputs and Outputs on a Dairy Farm." EDIS 2015, no. 3 (May 6, 2015): 5. http://dx.doi.org/10.32473/edis-ss640-2015.

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In dairy production systems, nitrogen flows through both the forage crops and the dairy cows. Forage crops use nitrogen mineralized from manure for plant growth. Harvested crops are then fed to dairy cows that, in turn, use the nitrogen for their growth and milk production. When the cows excrete a portion of the consumed nitrogen as manure the cycle is renewed. This 5-page fact sheet focuses on the forage production aspect of the nitrogen cycle at a dairy farm. Written by Rebecca Hellmuth and George Hochmuth, and published by the UF Department of Soil and Water Science, March 2015. (Image cred

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30

Hellebrand, H. J., V. Scholz, and J. Kern. "Nitrogen conversion and nitrous oxide hot spots in energy crop cultivation." Research in Agricultural Engineering 54, No. 2 (June 24, 2008): 58–67. http://dx.doi.org/10.17221/1001-rae.

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Since 1999, nitrous oxide (N<sub>2</sub>O) soil emissions from sites cultivated with energy plants have been measured by gas chromatography and gas flux chambers in experimental fields. The main aim of this study was the nitrogen conversion factor and its variability for sandy soils under climatic conditions of Central Europe. Annual plants (hemp, rape, rye, sorghum, triticale) and perennial plants (grass, perennial rye, poplar, willow) were fertilised with three different levels of nitrogen (150 kg N/ha/year, 75 kg N/ha/year, and none). The annual nitrogen conversion factors were

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31

Lupwayi, Newton Z., and Yoong K. Soon. "Nitrogen-Related Rotational Effects of Legume Crops on Three Consecutive Subsequent Crops." Soil Science Society of America Journal 80, no. 2 (March 2016): 306–16. http://dx.doi.org/10.2136/sssaj2015.08.0299.

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32

Cocking, Edward, and David Dent. "The prospect of N2-fixing crops galore!" Biochemist 41, no. 4 (August 1, 2019): 14–17. http://dx.doi.org/10.1042/bio04104014.

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The impact of carbon on our climate has been of major concern for a number of years. However, we are now learning to be equally concerned about the next element in the periodic table, nitrogen, and the consequences of using synthetic nitrogen fertilizers in agriculture that pollute our planet and its atmosphere.

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33

Colangelo, David J., and Mark H. Brand. "Water and Nitrogen Management to Reduce Nitrate-Nitrogen Leaching from Container Crops." HortScience 32, no. 3 (June 1997): 455E—455. http://dx.doi.org/10.21273/hortsci.32.3.455e.

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Plastic 208-L industrial barrels (14 total) were modified for use as soil-filled lysimeters to study the nitrogen dynamics of a typical container crop production system. The top of each barrel was removed and the bottom was fitted with a drain hole and filter fabric. The drain was then connected via tubing to a 2-L leachate collection vessel made from a length of 15.24-cm-diameter PVC pipe that had been capped on one end. All barrels and connected collection vessels were recessed into a grassed slope. Barrels were filled with homogeneous B and C horizon soil to simulate soil conditions of a ty

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34

Stevenson, F. C., and C. van Kessel. "The nitrogen and non-nitrogen rotation benefits of pea to succeeding crops." Canadian Journal of Plant Science 76, no. 4 (October 1, 1996): 735–45. http://dx.doi.org/10.4141/cjps96-126.

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The inclusion of a pulse crop in a rotation often leads to greater seed yields in the succeeding cereal crop. Two rotations were established at three sites in 1993 to examine the N and non-N rotation benefits of pea (Pisum sativum L.) to the subsequent wheat (Triticum aestivum L.) then oilseed crops. Wheat seed yield was 43% greater (rotation benefit) when preceded by pea rather than wheat, a consistent response among sites. Six to fourteen kg ha−1 of the extra 27 kg ha−1 of N accumulated by wheat in the pea–wheat rotation was derived from the additional N derived from pea residue. The additio

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35

PADHAN, BIRENDRA KUMAR, LEKSHMY SATHEE, and VANITA JAIN. "Nitrogen remobilization and its importance in nitrogen use efficiency (NUE) of crops." Indian Journal of Agricultural Sciences 90, no. 12 (February 10, 2021): 2251–61. http://dx.doi.org/10.56093/ijas.v90i12.110299.

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Nitrogen (N) remobilization during grain filling from pre-anthesis N uptake and stored in different tissues of crop N use efficiency (NUE). N is remobilized from to sink (young leaves or grains) with the help of nitrate/amino acid transporters. Nearly 80% of grain N in cereals is derived from N remobilized from vegetative tissues. Remobilization of N within the plant takes place from older leaves to young leaves, leaves to grains, senescing organs to grains, from storage parts to grains. Enzymes involved in N remobilization include glutamine synthetase (GS), glutamate dehydrogenase (GDH), aspa

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36

Козырева, М. Ю., and Л. Ж. Басиева. "THE NITROGEN CONSUMPTION BY ALFALFA CROPS DEPENDING ON THE NITROGEN NUTRITION PATTERN." Niva Povolzh`ia, no. 3(56) (December 17, 2020): 50–56. http://dx.doi.org/10.36461/np.2020.56.3.015.

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Приведены результаты полевых исследований потребления азота посевами люцерны в зависимости от режима азотного питания и симбиотической активности посевов за 2017…2019 годы. Опыты с люцерной синегибридной проведены в экологических условиях предгорной зоны РСО-Алания на черноземе выщелоченном с близким залеганием галечника. Сравнивались минеральный и симбиотрофный режимы азотного питания растений люцерны. Установлено, что в год посева потребление азота посевами люцерны составило от 105,0 до 135,4 кг/га, при этом к первому укосу потребление было в 1,1…1,2 раза больше, чем ко второму укосу. На вто

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Padilla, Francisco M., Michela Farneselli, Giorgio Gianquinto, Francesco Tei, and Rodney B. Thompson. "Monitoring nitrogen status of vegetable crops and soils for optimal nitrogen management." Agricultural Water Management 241 (November 2020): 106356. http://dx.doi.org/10.1016/j.agwat.2020.106356.

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38

Tkachuk, Oleksander, and Vitalii Ovcharuk. "ECOLOGICAL POTENTIAL OF GRAIN PEGULUM CROPS IN MODERN INTENSIVE CROP ROTATIONS." Agriculture and Forestry, no. 3 (October 30, 2020): 161–71. http://dx.doi.org/10.37128/2707-5826-2020-3-14.

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The article discusses the ecological significance of leguminous crops grown in modern intensive crop rotation. In particular, the area under crops of common leguminous crops in Ukraine and the level of their productivity have been analyzed. A comparison is made with the acreage of the most widespread grain crops. The emphasis of the article is aimed at establishing the level of nitrogen fixation of leguminous crops, which have the largest sown areas in Ukraine. The volume of accumulation by these leguminous crops of by-products in the form of their straw and stubble is also calculated. A compa

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39

Haider, Tazeem, Muhammad Shahid Farid, Rashid Mahmood, Areeba Ilyas, Muhammad Hassan Khan, Sakeena Tul-Ain Haider, Muhammad Hamid Chaudhry, and Mehreen Gul. "A Computer-Vision-Based Approach for Nitrogen Content Estimation in Plant Leaves." Agriculture 11, no. 8 (August 11, 2021): 766. http://dx.doi.org/10.3390/agriculture11080766.

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Nitrogen is an essential nutrient element required for optimum crop growth and yield. If a specific amount of nitrogen is not applied to crops, their yield is affected. Estimation of nitrogen level in crops is momentous to decide the nitrogen fertilization in crops. The amount of nitrogen in crops is measured through different techniques, including visual inspection of leaf color and texture and by laboratory analysis of plant leaves. Laboratory analysis-based techniques are more accurate than visual inspection, but they are costly, time-consuming, and require skilled laboratorian and precise

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40

Zhuang, Hua, and Ying Wang. "Effects of Nitrogen Reduction Combined with Organic Fertilizer on Crops." Frontiers in Science and Engineering 4, no. 5 (May 22, 2024): 112–17. http://dx.doi.org/10.54691/27py1d57.

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By summarizing the methods of nitrogen fertilizer reduction combined with organic fertilizer, this paper discussed and analyzed the effects of nitrogen fertilizer reduction combined with organic fertilizer on soil carbon and nitrogen content and biological activity of crops, mastered the soil carbon and nitrogen retention capacity of orchards, clarified the relationship between fruit trees and soil environment, and established the optimal effect equation between fertilizer application and yield. It is of great scientific significance to provide theoretical basis and technical support for optim

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41

Oda, Masato, and Uchada Sukchan. "Crop production under nitrogen starvation conditions: relationships with applied organic matter and soil microbial biomass." F1000Research 9 (February 7, 2020): 90. http://dx.doi.org/10.12688/f1000research.21814.1.

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Background: The application of organic matter with a high C/N ratio is effective for the prevention of soil degradation, although this can cause nitrogen starvation. However, some fields are highly productive under nitrogen-starvation conditions. The underlying mechanisms for this are unclear but the correlation between soil microbial biomass (SMB) and crop yield suggests that nitrogen flows from SMB to crops. We aimed to clarify this flow and the source of nitrogen. Methods: We achieved nitrogen starvation conditions by applying waste mushroom bed and repeated lettuce cropping with different

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42

PAMPANA, SILVIA, ALESSANDRO MASONI, MARCO MARIOTTI, LAURA ERCOLI, and IDUNA ARDUINI. "NITROGEN FIXATION OF GRAIN LEGUMES DIFFERS IN RESPONSE TO NITROGEN FERTILISATION." Experimental Agriculture 54, no. 1 (October 11, 2016): 66–82. http://dx.doi.org/10.1017/s0014479716000685.

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SUMMARYLegume crops are not usually fertilised with mineral N. However, there are at least two agronomic cases when it would be advantageous to distribute N fertiliser to legume crops: at sowing, before the onset of nodule functioning, and when a legume is intercropped with a cereal. We highlight the impact of various levels of fertiliser nitrogen on grain yield, nodulation capacity and biological nitrogen fixation in the four most common grain legume crops grown in central Italy. Chickpea (Cicer arietinum L.), field bean (Vicia faba L. var. minor), pea (Pisum sativum L.) and white lupin (Lupi

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Sainju, U. M., B. P. Singh, and W. F. Whitehead. "Cover crops and nitrogen fertilization effects on soil carbon and nitrogen and tomato yield." Canadian Journal of Soil Science 80, no. 3 (August 1, 2000): 523–32. http://dx.doi.org/10.4141/s99-107.

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Cover crops can influence soil properties and crop yield. We examined the influence of legume [hairy vetch (Vicia villosa Roth) and crimson clover (Trifolium incarnatum L.)] and nonlegume [rye (Secale cereale L.)] cover crops and N fertilization (0, 90, and 180 kg N ha−1) on the short- and long-term effects on soil C and N and tomato yield and N uptake. We measured organic C and N (long-term effects), potential C and N mineralization (PCM and PNM) and inorganic N (short-term effects) periodically on a Greenville fine sandy loam (fine-loamy, kaolinitic, thermic, Rhodic Kandiudults) planted with

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RAMAZANOVA, SB, SB KENENBAYEV, VN GUSEV, and GSH BAYMAKANOVA. "NITROGEN FERTILIZERS ROLE IN GRAIN CROPS PRODUCTIVITY IN SOUTH-EAST KAZAKHSTAN." SABRAO Journal of Breeding and Genetics 55, no. 5 (October 31, 2023): 1812–20. http://dx.doi.org/10.54910/sabrao2023.55.5.32.

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Seeking to improve the efficiency of nitrogen fertilizers for grain crops led to conducting this study on developing methods using 15N in 2015–2017 at the Kazakh Research Institute of Agriculture, Almalybak Village, Almaty Region, Southeastern Kazakhstan. Nitrogen use efficiency using the stable isotope 15N in microfield experiments revealed that the assimilation of nitrogen fertilizers by grain crops largely depends on the norms, timing, fertilization method, and varietal parameters of the concerned crop. Based on morphophysiological methods of monitoring plant development conditions, the nit

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Braos, Lucas Boscov, Roberta Souto Carlos, Aline Carla Trombeta Bettiol, Marina Ali Mere Bergamasco, Maira Caroline Terçariol, Manoel Evaristo Ferreira, and Mara Cristina Pessôa da Cruz. "Soil Carbon and Nitrogen Forms and Their Relationship with Nitrogen Availability Affected by Cover Crop Species and Nitrogen Fertilizer Doses." Nitrogen 4, no. 1 (February 13, 2023): 85–101. http://dx.doi.org/10.3390/nitrogen4010007.

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Cover crops and N fertilization strongly impact the forms of soil organic C and N and their availability, which change the responses of plants to N fertilization and soil organic C accumulation. Our study objectives were to evaluate the effects of cover crops and N doses on soil total and soluble C and N contents, N fractions, and potentially available N in a long-term no-till experiment. The experiment was conducted in a randomized block design with split plots and four replicates. The main treatments were cover crops species, jack bean, lablab bean, millet, velvet bean, and fallow cultivated

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Crews, T. E. "Perennial crops and endogenous nutrient supplies." Renewable Agriculture and Food Systems 20, no. 1 (March 2005): 25–37. http://dx.doi.org/10.1079/raf200497.

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AbstractPerennial cropping systems may achieve significant improvement over annual systems in the synchrony between crop nutrient demands and nutrient supplies. Improvements in nutrient synchrony would result in the reduction of nutrient losses and their associated environmental impacts. A perennial system with high levels of synchrony would also require fewer nutrient inputs, such that it may be possible to develop an agriculture that functions mostly, if not entirely, on nutrient inputs from endogenous sources (i.e., weathering of primary and secondary minerals and biological nitrogen fixati

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Pszczółkowska, Agnieszka, Adam Okorski, Jacek Olszewski, Gabriel Fordoński, Sławomir Krzebietke, and Alina Chareńska. "Effects of pre-preceding leguminous crops on yield and chemical composition of winter wheat grain." Plant, Soil and Environment 64, No. 12 (November 30, 2018): 592–96. http://dx.doi.org/10.17221/340/2018-pse.

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The after-effects of pre-preceding crops (second year), i.e. legumes and spring wheat, and nitrogen fertilization rate (0, 60, 120 and 180 kg N/ha) on the yield and chemical composition of winter wheat grain were analysed in a field experiment conducted in 2013–2015. Winter wheat was characterized by higher yield when sown after blue lupine (increase of 0.23 t/ha) and faba beans with a determinate growth habit (increase of 0.37 t/ha) than after spring wheat. Grain yield increased significantly with a rise in nitrogen fertilization rate (by 2.03, 3.47 and 4.02 t/ha, respectively). The species o

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Vlasenko, O. A. "DYNAMICS OF NUTRITION ELEMENTS IN FODDER CROPS AGROCENOUSES." Mongolian Journal of Agricultural Sciences 21, no. 02 (February 6, 2018): 75–77. http://dx.doi.org/10.5564/mjas.v21i02.910.

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Rapeseed and rapeseed and millet mixtures are cultivated, the supply of chernozem with nitrate nitrogen is low and medium, the supply of ammonium nitrogen is high. The availability of mobile phosphorus is reduced by the end of the growing season. The availability of exchange potassium for these crops is very high.

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Angus, J. F., and P. R. Grace. "Nitrogen balance in Australia and nitrogen use efficiency on Australian farms." Soil Research 55, no. 6 (2017): 435. http://dx.doi.org/10.1071/sr16325.

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The amount of reactive N in soils on the Australian continent appears to be increasing, mainly because of biological N-fixation by permanent pastures in the dryland farming zone. This gain is partly offset by N-mining by crops, which we estimate have removed between one-fifth and one-quarter of the original soil N. The vast areas of non-agricultural land and arid rangelands appear to be in neutral N balance and the relatively small area of intensive agriculture is in negative balance. There are regional N losses from the sugar and dairy industries to groundwater, estuaries and lagoons, includi

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Branco, Roberto BF, Sally F. Blat, Tais GS Gimenes, Rodrigo HD Nowaki, Humberto S. Araújo, and Fernando A. Salles. "Nitrogen fertilization of vegetables cultivated under no-tillage after cover crops." Horticultura Brasileira 35, no. 1 (March 2017): 103–10. http://dx.doi.org/10.1590/s0102-053620170116.

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ABSTRACT The production of horticultural crops in no-tillage and in rotation with cover crops reduces the dependency in nitrogen fertilizer, due to increased soil organic matter and by biological fixation performed by legumes. Thus, the aim of this work was to study rates of nitrogen fertilization and cover crops in the agronomic performance of tomato and broccoli grown under no-tillage. The experiment was conducted in a split plot design with four replications. Treatments consisted of cover crops, sunn hemp and millet, and four rates of nitrogen fertilization (0, 50, 100 and 200 kg/ha of nitr

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