scholarly journals Phosphorus and Potassium Fertilizer Effects on Alfalfa and Soil in a Non‐Limited Soil

2013 ◽  
Vol 105 (6) ◽  
pp. 1613-1618 ◽  
Author(s):  
Stefano Macolino ◽  
Leonard M. Lauriault ◽  
Filippo Rimi ◽  
Umberto Ziliotto
Keyword(s):  
Potassium Fertilizer ◽  
Phosphorus And Potassium

scholarly journals Nitrogen, phosphorus, and potassium fertilizer effects on cassava tuber yield in the coastal district of Dondo, Mozambique

2017 ◽  
Vol 12 (42) ◽  
pp. 3112-3119
Author(s):  
B. Cuvaca Ivan ◽  
S. Eash Neal ◽  
M. Lambert Dayton ◽  
R. Walker Forbes ◽  
Rustrick William
Keyword(s):  
Tuber Yield ◽  
Potassium Fertilizer ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus ◽  
Coastal District

Validation of Soil‐Test‐Based Phosphorus and Potassium Fertilizer Recommendations for Flood‐Irrigated Rice

2019 ◽  
Vol 111 (5) ◽  
pp. 2523-2535 ◽  
Author(s):  
Matthew S. Fryer ◽  
Nathan A. Slaton ◽  
Trenton L. Roberts ◽  
Jarrod T. Hardke ◽  
Richard J. Norman
Keyword(s):  
Soil Test ◽  
Potassium Fertilizer ◽  
Irrigated Rice ◽  
Fertilizer Recommendations ◽  
Phosphorus And Potassium

Validation of Soil-Test-Based Phosphorus and Potassium Fertilizer Recommendations for Irrigated Soybean

2019 ◽  
Vol 83 (3) ◽  
pp. 825-837 ◽  
Author(s):  
Matthew S. Fryer ◽  
Nathan A. Slaton ◽  
Trenton L. Roberts ◽  
W. Jeremy Ross
Keyword(s):  
Soil Test ◽  
Potassium Fertilizer ◽  
Fertilizer Recommendations ◽  
Phosphorus And Potassium

scholarly journals ВЛИЯНИЕ УДОБРЕНИЙ НА ФОРМИРОВАНИЕ ПЛОТНОСТИ АГРОЦЕНОЗА, ПОСЕВНЫЕ КАЧЕСТВА И БИОХИМИЧЕСКИЙ СОСТАВ СЕМЯН ЯРОВОЙ ПШЕНИЦЫ

2019 ◽  
pp. 2-8
Author(s):  
L.V. Karpova ◽  
A.V. Strogonova
Keyword(s):  
Spring Wheat ◽  
Biochemical Composition ◽  
Fertilizer Application ◽  
Natural Fertility ◽  
Potassium Fertilizer ◽  
Protein Nitrogen ◽  
Germination Energy ◽  
Biological Potential ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

Наличие микроэлементов в почвах нашей страны находится в большом дефиците, что не позволяет оправдать биологический потенциал продуктивных показателей основных сельскохозяйственных культур. Цель исследований научное обоснование выбора наиболее эффективного способа применения комплексных жидких удобрений с микроэлементами в хелатной форме для формирования плотности агроценоза, посевных качеств и биохимического состава семян яровой пшеницы. Установлено, что в среднем за два года исследований полевая всхожесть яровой пшеницы на фоне естественного плодородия находилась в пределах 73,8-78,4, а на фоне внесения азофоски она составила 73,6-79,3. Наибольшее количество сохранившихся растений к уборке отмечено как на фоне без внесения удобрений, так и на фоне минерального питания в вариантах с обработкой семян Мегамикс-семена и Мегамикс-Профи в фазы кущения и колошения 386 и 388 растений на 1 м2. Микроэлементные удобрения оказали влияние на массу 1000 семян, энергию прорастания, лабораторную всхожесть и силу роста. При выращивании данной культуры на фоне внесения N16P16K16 масса 1000 семян увеличилась на 10,1 по вариантам опыта, энергия прорастания 9,4, лабораторная всхожесть на 6,9, масса 100 ростков на 17, а длина ростка 18,9. Биохимический состав зерна показывает запас питательных элементов: белка, азота, фосфора и калия, наибольшее количество которых накопилось в зерне яровой пшеницы, выращенной при обработке семян и посевов удобрениями Мегамикс-семена и Мегамикс-Профи .There is a great shortage of trace elements in the soils of our country, which does not justify the biological potential of the productive indicators of the main crops. The research objective is the scientific substantiation of the choice of the most effective way of applying complex liquid fertilizers with microelements in chelated form to form the density of agrocenosis, seedlings qualities and biochemical composition of spring wheat seeds. It was established that, on average, over two years of research, the field germination of spring wheat against the background of natural fertility was in the range of 73.8-78.4, and against the background of the application of nitrogen-phosphorus-potassium fertilizer it amounted to 73.6-79.3. The largest number of plants remained for harvesting was noted both against the background without fertilizer application and against the background of mineral nutrition in the variants with seed treatment with Megamix-seeds and Megamix-Profi in the tillering and heading stages - 386 and 388 plants per 1 m2. Micronutrient fertilizers influenced the weight of 1000 seeds, germination energy, laboratory germination and growth power. When growing this crop against the background of N16P16K16 application, the weight of 1000 seeds increased by 10.1 according to the experimental variants, germination energy - 9.4, laboratory germination by 6.9, weight of 100 sprouts - by 17, and sprout length - 18.9. The biochemical composition of the grain shows a supply of the following nutrients: protein, nitrogen, phosphorus and potassium, the largest amount of which was accumulated in spring wheat grain grown during the treatment of seeds and crops with fertilizers Megamix-seeds and Megamix-Profi.

scholarly journals Pertumbuhan dan Keragaan Tanaman Jeruk Keprok Borneo Prima pada Dosis Pupuk dan Bentuk Pangkas Berbeda

2017 ◽  
Vol 7 (2) ◽  
pp. 1
Author(s):  
Tiara Septirosya ◽  
Roedhy Poerwanto ◽  
Abdul Qadir
Keyword(s):  
Plant Architecture ◽  
Block Design ◽  
Research Station ◽  
Potassium Fertilizer ◽  
Land Occupation ◽  
Two Factors ◽  
Lowland Area ◽  
Rate Of Photosynthesis ◽  
Phosphorus And Potassium ◽  
And Performance

Borneo Prima Mandarin (Citrus reticulata cv Borneo Prima) is a new local commodity that grown in lowland but has an interesting orange skin. As a new commodity, Borneo Prima Mandarin has to be developed in order to reduce citrus import. The research was conducted in lowland area (250 m above sea level) IPB research station, Sindang Barang, Bogor from February 2014 to February 2015. The aim of this research was to observe the effect of phosphorus and potassium (PK) fertilizer and pruning on the growth and performance of the plants. This research used Randomize Complete Block Design (RCBD) with two factors. The first factor was aplication of PK fertilizer (15 g P+ 10 g K, 15 g P+ 15 g K, 20 g P+10 g K, 20 g P+15 g K per plant) and the second factor was pruning form (without pruning, open center pruning and hedge pruning). The result showed that the combination of phosporus and potassium fertilizer just gave a significant effect to number of shoot. The highest number of new shoots formed by fertilizing 15 g P+10 g K per tree per application. Pruning treatments had significant effect to plant architecture (i.e reduce plant height, land occupation). Open center pruning and hedge pruning made the crown more open that can increase the light interception so that increase the rate of photosynthesis.

scholarly journals Canada: Playing catch-up on phosphorus policy

FACETS ◽  
2018 ◽  
Vol 3 (1) ◽  
pp. 642-664 ◽  
Author(s):  
Jessica Zane Ross ◽  
Sidney Omelon
Keyword(s):  
Nutrient Management ◽  
Developed Countries ◽  
Management Plan ◽  
Leadership Role ◽  
Potassium Fertilizer ◽  
Success Stories ◽  
Global Power ◽  
Phosphorus And Potassium ◽  
Phosphorus Recycling ◽  
The Eu

The concept of sustainable phosphorus is studied in depth around the world, as the scientific community largely agrees that the non-renewable phosphorus reserves in the form of phosphorite ore must be used judiciously. Unfortunately, many developed countries, including Canada, have yet to implement a phosphorus management plan. The Netherlands, Germany, and Switzerland can be heralded as success stories of effective, committed, cross-sector phosphorus management. We examine factors that contributed to their success and consider how these may be transferred to Canada. We also consider Canadian geographic and research factors and contrast the Canadian policy environment and phosphorus recycling efforts with those in the EU. Finally, we analyze active Canadian and North American phosphorus interest groups and seek to determine why their collective efforts have yet to coalesce around tangible action. Canada produces phosphorus fertilizer from imported deposits of phosphate rock. Canada produces potassium fertilizer from its rich potash mines, making it a global power in nutrient production. It is imperative that Canada earns a respected leadership role in efficient global phosphorus and potassium nutrient management and recycling.

scholarly journals Impact of Nitrogen and Phosphorus on Grain Yield in Winter Triticale Grown on Degraded Vertisol

Agronomy ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 757
Author(s):  
Vera Rajičić ◽  
Vera Popović ◽  
Vesna Perišić ◽  
Milan Biberdžić ◽  
Zoran Jovović ◽  
...  
Keyword(s):  
Grain Yield ◽  
Ph Value ◽  
Available Phosphorus ◽  
Potassium Fertilizer ◽  
Nitrogen And Phosphorus ◽  
Winter Triticale ◽  
Growing Seasons ◽  
Yield And Quality ◽  
Phosphorus And Potassium ◽  
Major Nutrients

The objectives of this study were to investigate: (1) the effects of fertilization, environment, and their interactions on the thousand grain weight (TGW), hectolitre weight (HW) and grain yield (GY) of winter triticale, and (2) the correlations between these traits in different environments. The invariable nitrogen (80 kg N ha−1), potassium (60 kg K2O ha−1) and two phosphorus (60 and 100 kg P2O5 ha−1) doses were used in Kragujevac location in central Serbia. Nitrogen was applied individually and in combination with two phosphorus rates and one rate of potassium fertilizer. Eight fertilization treatment controls and N80, P60, P100, N80P60K60, N80P100K60, N80P60 and N80P100 were examined during three growing seasons. The yield and quality of triticale significantly varied across years and treatments. The average yield of all treatments in the 2015 growing season was significantly greater than in the previous years (3.597 t ha−1). Combined usage of NPK fertilizer (80 kg N ha−1, 100 kg P2O5 ha−1 and 60 kg K2O ha−1) represented the excellent base for optimum supply of major nutrients, resulting in maximum GY (4.0 t ha−1). Negative and significant correlation was found between grain GY and TGW (−0.392*) in 2015, and positive highly significant correlation were in 2013 (0.648**) and 2014 (0.493**). The positive effect over complete application of fertilizer is the result of a lower pH value of the soil, as well as the low content of available phosphorus and potassium in Vertisol soil type. Optimizing fertilization for maximum profitability is of great importance in the future triticale production in Pannonian Environments.

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