scholarly journals Effect of nitrogen, phosphorus and potassium fertilizer on growth and yield of drought tolerant rice genotypes

2015 ◽  
Vol 10 (1) ◽  
pp. 73-79
Author(s):  
T. PATEL ◽  
V.N. MISHRA
2017 ◽  
Vol 12 (42) ◽  
pp. 3112-3119
Author(s):  
B. Cuvaca Ivan ◽  
S. Eash Neal ◽  
M. Lambert Dayton ◽  
R. Walker Forbes ◽  
Rustrick William

2019 ◽  
pp. 2-8
Author(s):  
L.V. Karpova ◽  
A.V. Strogonova

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.


2002 ◽  
Vol 1 (5) ◽  
pp. 548-549 ◽  
Author(s):  
Razaullah Khan ◽  
Sher Ahmed . ◽  
Salimullah Khan . ◽  
Fayaz Ahmed . ◽  
Meer Zaman . ◽  
...  

F1000Research ◽  
2017 ◽  
Vol 6 ◽  
pp. 399 ◽  
Author(s):  
Dèdéou Apocalypse Tchokponhoué ◽  
Sognigbé N'Danikou ◽  
Iago Hale ◽  
Allen Van Deynze ◽  
Enoch Gbènato Achigan-Dako

Background.The miracle plant,Synsepalum dulcificum(Schumach. & Thonn.) Daniell is a native African orphan crop species that has recently received increased attention due to its promise as a sweetener and source of antioxidants in both the food and pharmaceutical industries. However, a major obstacle to the species’ widespread utilization is its relatively slow growth rate and prolonged juvenile period.Method.In this study, we tested twelve treatments made up of various watering regimes and exogenous nutrient application (nitrogen, phosphorus and potassium, at varying dosages) on the relative survival, growth, and reproductive development of 15-months-oldS. dulcificumjuveniles.Results.While the plants survived under most tested growing conditions, nitrogen application at doses higher than 1.5 g [seedling]-1was found to be highly detrimental, reducing survival to 0%. The treatment was found to affect all growth traits, and juveniles that received a combination of nitrogen, phosphorus, and potassium (each at a rate of 1.5 g [seedling]-1), in addition to daily watering, exhibited the most vegetative growth. The simple daily provision of adequate water was found to greatly accelerate the transition to reproductive maturity in the species (from >36 months to an average of 23 months), whereas nutrient application affected the length of the reproductive phase within a season, as well as the fruiting intensity.Conclusions.This study highlights the beneficial effect of water supply and fertilization on both vegetative and reproductive growth inS. dulcificum. Water supply appeared to be the most important factor unlocking flowering in the species, while the combination of nitrogen, phosphorus and potassium at the dose of 1.5 g (for all) consistently exhibited the highest performance for all growth and yield traits. These findings will help intensifyS. dulcificum’s breeding and horticultural development.


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