Nutrient Effects on Tomatoes, Effect of Nitrogen, Phosphorus, and Potassium Fertilizer on Fruit Yield and Composition of Tomato Leaves

1959 ◽  
Vol 7 (6) ◽  
pp. 415-418 ◽  
Author(s):  
J. L. Malcolm
Keyword(s):  
Fruit Yield ◽  
Potassium Fertilizer ◽  
Nutrient Effects ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

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

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 THE PEAR TREE RESPONSE TO PHOSPHORUS AND POTASSIUM FERTILIZATION

2015 ◽  
Vol 37 (2) ◽  
pp. 507-516 ◽  
Author(s):  
GUSTAVO BRUNETTO ◽  
GILBERTO NAVA ◽  
VÍTOR GABRIEL AMBROSINI ◽  
JUCINEI JOSÉ COMIN ◽  
JOÃO KAMINSKI
Keyword(s):  
Yield Components ◽  
Nutrient Content ◽  
Phosphate Fertilizer ◽  
Fruit Yield ◽  
Potassium Fertilizer ◽  
Crop Season ◽  
Pear Trees ◽  
Phosphorus And Potassium ◽  
Total P ◽  
K Fertilization

The aim of this study was to evaluate the response to phosphorus (P) and potassium (K) fertilization and to establish the critical levels of P and K in the soil and in the plant tissue in pear trees. Two experiments were conducted in São Joaquim (SC), Brazil. In experiment 1, the plants received annually the application of increasing rates of phosphate fertilizer (0, 40, 80, 120 and 160 kg P2O5 ha-1), while in experiment 2, increasing rates of potassium fertilizer (0, 40, 80, 120 and 160 kg K2O ha-1) were applied annually. In the two experiments, soil was collected annually from the 0-10, 10-20 and 0-20 cm layers, and the available P (experiment 1) and exchangeable K (experiment 2) content was analyzed. Whole leaves were collected annually, which were subjected to analysis of total P (experiment 1) and total K (experiment 2) content. The number and weight of the fruits per plant and fruit yield were evaluated. Application of P on the soil planted with pear trees increased the nutrient content in the soil and, in most crop seasons, in the whole leaf, but it did not affect the yield components and fruit yield. The application of K on the soil with pear trees increased the nutrient content in the soil and, in most of the crop seasons, in the whole leaf, but the potassium content in the whole leaf decreased in the crop season with greater fruit yield. The yield components and fruit yield were not affected by K fertilization.

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.

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