scholarly journals Pumpkin Yield Affected by Soil Nutrients and the Interactions of Nitrogen, Phosphorus, and Potassium Fertilizers

HortScience ◽  
2019 ◽  
Vol 54 (10) ◽  
pp. 1831-1835
Author(s):  
Yang Chen ◽  
Xianzhi Zhou ◽  
Yongsheng Lin ◽  
Lina Ma
Keyword(s):  
Fertilizer Application ◽  
Performance Model ◽  
Single Variable ◽  
Typical Application ◽  
K Fertilizer ◽  
Level 3 ◽  
Phosphorus And Potassium ◽  
Significant Regression ◽  
Level 2 ◽  
Nitrogen Phosphorus

To study the effects of nitrogen (N), phosphorus (P), and potassium (K) fertilizers on the yield of ‘Jianbao’ pumpkin (Cucurbita maxima Duch), we conducted experiments using the “3414” optimal design scheme in Dehua County, Quanzhou, Fujian, China. Overall, three fertilizer factors (N, P, K) were tested with four fertilization levels (level 0, no fertilizer; level 1, 0.5-times the typical fertilizing amount; level 2, typical fertilizer application; level 3, 1.5-times the typical application), with a total of 14 different fertilization treatments. Based on the results of this study, a corresponding fertilization performance model was established to provide a practical basis for ensuring highly efficient cultivation of pumpkin in the field. Our results showed that the experimental data could not be fitted with a ternary quadratic polynomial fertilizer model, but that it could be fitted with a single-variable quadratic fertilizer model. According to the fitted model, pumpkin yield first increased and then decreased with the increasing amount of N, P, and K used. We identified significant regression relationships between ‘Jianbao’ pumpkin yield and the amount of N, P, and K in the fertilizer. Finally, based on the single-variable quadratic fertilizer model, we suggest that the quantities of N, P, and K fertilizer used for growing 1 ha of ‘Jianbao’ pumpkin should be 390.5, 213.8, and 371.3 kg, respectively.

scholarly journals Agronomical Field Testing of New Kinds of Multicomponent Mineral Fertilizers

2014 ◽  
Vol 17 (1) ◽  
pp. 79
Author(s):  
K.T. Zhantasov ◽  
Z.U. Myrhalykov ◽  
S.M. Moldabekov ◽  
M.K. Zhantasov ◽  
B.T. Omarov ◽  
...  
Keyword(s):  
Sandy Loam ◽  
Mineral Fertilizer ◽  
Field Testing ◽  
Fertilizer Application ◽  
Sandy Loam Soil ◽  
Mineral Fertilizers ◽  
Essential Difference ◽  
Loam Soil ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

Analysis of modern scientific literature and patents has shown the absence of acid-free production technology of a mechanically activated multicomponent mineral fertilizer containing water-holding substances. Experimental researches connecting with mechanochemical activation and physicochemical properties of Karatau phosphorites prove a possibility of development of a new multicomponent mineral fertilizer. Application of inorganic and organic activators considerably improves qualities of fertilizers because the developed fertilizer mixtures contain nitrogen, phosphorus, potassium, humate and microelements. The suggested technology intends to use wastes of coal mining that leads to presence of humates and microelements in the end product. It was determined, that content of total nitrogen, phosphorus and potassium depends on a form of nitrogen-phosphorus-potassium-containing substances. The given article contains data of researches connecting with use of multicomponent mineral fertilizers in field conditions for cotton cultivation on irrigated light sierozems consisting of soil-forming rocks of loess and loess-type clay loams. The research results show the increase of soil’s fertility and cotton’s productivity. Studying of agronomic efficiency of the new kinds of mechanically activated multicomponent mineral fertilizers at the cultivation of a bean-cereal mixture has been carried out in the Negorelsk experimental nursery-garden of the Belarus State Technical University on a sod-podzol sandy-loam soil and has shown the essential influence on productivity and quality of the bean-cereal mixture. The researches fulfilled on a sod-podzol sandy-loam soil have revealed the essential increase of key indicators of feed productivity. Application of the mineral fertilizers has promoted increase of nitrogen, phosphorus and potassium content in green plants. In so doing content of calcium and magnesium in green mass depends from quantity of the fertilizer used to a smaller extent. An essential difference of crop capacity and feed productivity indicators depending on forms of the applied mineral fertilizers has not been found.

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.

The use of nutrient bioassays to assess the response of Eucalyptusgrandis to fertilizer application. 1. Interactions between nitrogen, phosphorus, and potassium in seedling nutrition

1993 ◽  
Vol 23 (1) ◽  
pp. 1-6 ◽  
Author(s):  
John Dighton ◽  
Helen E. Jones ◽  
Jan M. Poskitt
Keyword(s):  
Maximum Growth ◽  
Fertilizer Application ◽  
P Uptake ◽  
Nutrient Supply ◽  
Wood Production ◽  
Root Bioassay ◽  
Phosphorus And Potassium ◽  
K Concentration ◽  
Nitrogen Phosphorus ◽  
Different Levels

The nutritional requirements of Eucalyptusgrandis Hill ex Maiden seedlings were studied in glasshouse pot experiments. Nitrogen (N), phosphorus (P), and potassium (K) demand was assessed by bioassays, in which the uptake of tracers (15N, 32P, or 86Rb) by roots excised from the seedlings grown at different levels of nutrient supply was measured. A pilot study showed that there was an inverse relationship between nutrient supply and influx. The measured influx was affected by the length of time that the roots were stored before the bioassay was applied. In a 33 N, P, and K factorial nutrient experiment, growth was primarily influenced by N. Maximum growth occurred at the highest level of supply of each of the three nutrients. N and K influx in the root bioassay was inversely related to foliar N and K concentration, but P uptake was not related to foliar P concentration. These results indicate that the root bioassays are more sensitive determinants of nutrient limitation than. foliar analysis. Interactions between N and P and between N and K alter the stem:leaf ratio, which may be of importance in optimizing wood production.

Response of `Spineless Beauty' Zucchini (Cucurbita sp.) to Nitrogen, Phosphorus, and Potassium Fertilization

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 445d-445
Author(s):  
J. Pablo Morales-Payan
Keyword(s):  
Field Trials ◽  
Fruit Yield ◽  
Yield Response ◽  
K Fertilizer ◽  
Direct Seeded ◽  
Phosphorus And Potassium ◽  
Fruit Harvest ◽  
Fertilizer Rates ◽  
Nitrogen Phosphorus ◽  
K Fertilization

Field trials were conducted in Nigua, San Cristobal, Dominican Republic, to determine the yield response of `Spineless Beauty' zucchini (Cucurbita sp.) to nitrogen (N), phosphorus (P), and potassium (K) soil applications in a loamy clay soil containing 4.3% organic matter, 3 parts per million (ppm) of P, and 155 ppm of K. Zucchini was direct-seeded at a distance of 1 m between rows and 0.5 m within rows. Except for N, P, and K fertilization, the crop was grown according to recommended practices. A factorial design (4 × 4 × 4) with four replications was utilized. Rates of N, P, and K were 50, 100, 150, and 200 kg·ha–1, applied as a side dressing 7 days after zucchini emergence. Zucchini fruit harvest started 40 days after crop emergence and every other day thereafter during 20 days. Analysis of variance was performed on the resulting data. Results indicate that there were significant interactions of N, P, and K fertilizer rates on `Spineless Beauty' fruit yield; therefore, nutrient combinations were considered as individual treatments. Significantly superior (lsd 5%) fruit yield was obtained with 150, 150, and 50 kg·ha–1 N, P, and K, respectively.

scholarly journals FEATURES OF BASIC NUTRIENT CONSUMPTION BY LINSEED FLAXIN THE CONTEXT OF FERTILIZER APPLICATION

2021 ◽  
pp. 32-37
Author(s):  
P.Yu. Latartsev ◽  
◽  
O.I. Antonova ◽  
Keyword(s):  
Crop Yields ◽  
Fertilizer Application ◽  
Average Content ◽  
Nitrogen Application ◽  
Total Removal ◽  
Nitrogen And Phosphorus ◽  
Nutrient Consumption ◽  
Phosphorus Containing ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

The study of the content and removal of nitrogen, phosphorus and potassium by linseed flax plants of the oilseed variety Severniy showed that more nitrogen and phosphorus accumulated in seeds, and potassium -in straw. The average content levels in seeds were as follow-ing: N -4.79%, P2O5 -0.79%, K2O -1.05% as compared to respective levels in straw: 0.64%, 0.1% and 1.73%. When applying fertilizers, the content of all nutrients in the straw decreases, and in the seeds it mainly remains at the con-trol level. Due to the higher crop yields in all fertilized vari-ants, the removal of phosphorus and potassium exceeds the control; and nitrogen removal –in the variants with a higher rate of nitrogen application. With seeds, an average of 87-87.8% of nitrogen and phosphorus and 37.3% of potassium from the total removal is removed from the field. Increased rate of nitrogen application contributes to greater consumption of not only nitrogen but also phosphorus and potassium. The rates of nitrogen application in the experi-ments do not compensate for its yield removal with seeds; that requires increased nitrogen application against the background of phosphorus-containing fertilizers.

Effects of Age at Harvest and Fertilizer Application on the Yield, Available Carbohydrates and Hydrocyanic Acid Content of Cassava (Manihot palmata Pohl)

1977 ◽  
Vol 88 (3) ◽  
pp. 679-681
Author(s):  
G. O. Obigbesan ◽  
A. O. Ketiku ◽  
A. A. Fayemi
Keyword(s):  
Acid Content ◽  
Fertilizer Application ◽  
Hydrocyanic Acid ◽  
Nitrogen And Phosphorus ◽  
Growing Seasons ◽  
Significant Yield ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

SUMMARYExperiments were carried out over two growing seasons to find out the effects of fertilizer application and age at harvest on the yield, available carbohydrates and hydrocyanic acid content of Manihot palmata.Fertilizers were applied at the following rates: 0–0–0; 45–45–0; 45–45–45; 45–45–67, and 45–45–90 kg/ha of nitrogen, phosphorus and potassium respectively. Harvests were at 9 and 15 months after planting. Application of nitrogen and phosphorus resulted in significant yield increases. Fertilizer application had no significant effect on the hydrocyanic acid content of the tubers. Harvesting at 15 months gave more than double the tuber yields and a higher percentage of hydrocyanic acid than harvesting at 9 months. It is, therefore, desirable to use efficient methods of processing the tubers harvested at 15 months to obtain safe products for industrial and nutritional uses.

scholarly journals Performance of Cassava (Manihot esculenta Crantz) Varieties under Different Soil Amendments

2019 ◽  
pp. 1-7
Author(s):  
Kwadwo Gyasi Santo ◽  
Joseph Sarkodie-Addo
Keyword(s):  
Starch Content ◽  
Block Design ◽  
Organic Fertilizer ◽  
Poultry Manure ◽  
Fertilizer Application ◽  
Nitrogen And Phosphorus ◽  
Manihot Esculenta Crantz ◽  
Combined Application ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

Studies were carried out at Offinso in the Ashanti Region of Ghana to assess root quality of cassava grown with application of poultry manure and NPK 15-15-15 and NPK 23-10-10 fertilizers. The experimental design was a 2 x 6 factorial, arranged in a Randomized Complete Block Design (RCBD) with three replications. The treatments consisted of two cassava varieties in combination with five inorganic and/or organic fertilizer formulations and a control with no fertilizer. The parameters measured were starch content, poundability, nitrogen, phosphorus and potassium contents of cassava roots. The data collected were subjected to analysis of variance using the Genstat Statistical package. The results of the study indicated that Bankyehemaa produced higher starch content (29.86%) than the Nkabom variety. Fertilizer application increased starch content with the combined application of poultry manure and NPK 23-10-10 treatment recording the highest treatment effect (30.40%). Both the organic and inorganic fertilizers applied increased starch content of cassava roots. Poundability was not also affected by both variety and fertilizer application. However, roots treated with NPK 15-15-15 only and poultry manure alone were very poundable (3.0). Variety significantly affected only nitrogen and phosphorus contents of cassava roots. Bankyehemaa had higher content (0.72%) of nitrogen than Nkabom, while Nkabom recorded higher content (1.05%) of phosphorus than Bankyehemaa. Generally, application of fertilizer significantly affected root contents of nitrogen, phosphorus and potassium. However, potassium and phosphorus contents were reduced by the organic fertilizer (poultry manure). The NPK 15-15-15 treatment produced higher potassium (9.37%) and phosphorus (1.36%) contents of roots than the other treatments. The highest nitrogen content of roots (0.78%) was observed in the combined application of poultry manure and NPK 23-10-10 treatment.

scholarly journals The system of mineral nutrition of tomatoes in the Astrakhan region

2021 ◽  
Vol 843 (1) ◽  
pp. 012017
Author(s):  
M Yu Anishko ◽  
A S Ovchinnikov ◽  
Zh A Vilkova
Keyword(s):  
Mineral Nutrition ◽  
Drip Irrigation ◽  
Fertilizer Application ◽  
Climatic Conditions ◽  
Nitrogen Fertilizers ◽  
Mobile Forms ◽  
Open Ground ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

Abstract The article considers the characteristics of tomato vegetable culture when growing it in the open ground in the soil and climatic conditions of the Astrakhan region. The total demand of tomatoes for macronutrients – nitrogen, phosphorus and potassium in the context of the planned yield from 40 to 100 tons per hectare, taking into account the availability of mobile forms of nutrients in the soil, is shown. The average doses of the main fertilizer application during the preparation of the soil for tomatoes, the timing and doses of fertilizing tomatoes with nitrogen fertilizers when they are applied with fertigation during sprinkling and the fertigation program for drip irrigation of tomatoes for processing are presented.

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