Results 211 to 220 of about 44,236 (259)

Organic amendments boost maize yield (<i>Zea mays</i> L.) in karst soils via a hierarchical process driven by soil phosphorus enhancement and microbial-mediated nutrient cycling. [PDF]

Front Plant Sci
Yang R, Zhu J, Zhang Y, Liu Y, Li Z, Zhang H, Li Q, Wang X, Chen X, Chen D, Liu Q.   +10 more
europepmc   +1 more source

Synergistic effects of nitrogen, sewage sludge, and poultry manure on integrative fertilization for wheat and sugar beet in marginally saline soil. [PDF]

Front Plant Sci
Veres S, Alshaal T, Elhawat N.
europepmc   +1 more source

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The NPK method

Thermochimica Acta, 2002
Julia Sempere
exaly   +2 more sources

Nutrient Sensing and Signaling: NPKS

Annual Review of Plant Biology, 2007
Plants often grow in soils that contain very low concentrations of the macronutrients nitrogen, phosphorus, potassium, and sulfur. To adapt and grow in nutrient-deprived environments plants must sense changes in external and internal mineral nutrient concentrations and adjust growth to match resource availability.
Daniel P, Schachtman, Ryoung, Shin
openaire   +2 more sources

A theoretical study of the npk configurations

Journal of Quantitative Spectroscopy and Radiative Transfer, 1976
Abstract An up-to-date picture of the known np2 and np3 configurations is presented by plotting the reduced energy ϵ against ψ = ξp/(5F2 + ξp) according to Edlen. It is concluded that the p2 level values of S XI, Sc XVI, Ti XVII, V XVIII, Ni XV and Te III, and the p3 level values of Al VII, Si VIII, P IX, Cl X, Se II and Xe IV need to be improved ...
K. Rahimullah, M.S.Z. Chaghtai
openaire   +1 more source

Drum granulation of NPK fertilizers

Powder Technology, 2000
Nitrate-based NPK fertilizer was granulated in a bench scale drum granulation unit. The initial fertilizer possessed a particle size distribution similar to those in industrial granulation units. In this work, three factors are identified affecting the degree of fertilizer granulation, these are solution to solid phase ratio, the binder viscosity and ...
Walker, Gavin, Holland, C.R., Ahmad, M.N., Fox, J.N., Kells, A.G.   +4 more
openaire   +1 more source

Реологические свойства карбамидсодержащих суспензий при получении комплексных NPK и NPKS удобрений

2016
Работа посвящена исследованию реологических свойства суспензий, образующихся при получении NPS и NPKS удобрений на основе карбамидсодержащих сис­тем, влияния условий введения азот- и калийсодержащих компонентов на реологические свойства в температурном интервале 20...70 °С. Полученные результаты позволили обосновать оптимальные условия и режим введения
openaire   +2 more sources

EFFECT OF NPK FERTILIZATION ON COCONUT HYBRID

Madras Agricultural Journal, 1997
A field experiment was conducted at the Agricultural Research Station, Aliyamnagar from 1988 to 1996 to study the effect of NPK fertilization on coconut hybrid Chandra Sankhara. The results revealed that application of NPK @ 500:250:1000 g/palm/year recorded more nut yield and growth and yield ...
VENKITASWAMY R, CHRISTOPHER LOURDURA A, DEVASENAPATHY P, SRIDHARAN C.S, MADHIYAZHAGAN R, PRABAKARAN N.K   +5 more
openaire   +1 more source