نتایج جستجو برای: controlled fertilizers

تعداد نتایج: 396287  

2015
P. Salaš

SALA�, P.: Slow-release fertilizers and possibilities of their utilizing in nursery. Acta univ. agric. et silvic. Mendel. Brun., 2004, LII, No. 2, pp. 155-164 Reserve, slow-release fertilizers (SRF) enable to simplify the whole system of plant nutrition and fertilisation. Tabletted fertilizers of the Silvamix series represent a prospective product of Czech provenience. At our university, these ...

2017
V. Mohan M. Achary Babu Ram Mrinalini Manna Dipanwita Datta Arun Bhatt Malireddy K. Reddy Pawan K. Agrawal

The availability of orthophosphate (Pi) is a key determinant of crop productivity because its accessibility to plants is poor due to its conversion to unavailable forms. Weed's competition for this essential macronutrient further reduces its bio-availability. To compensate for the low Pi use efficiency and address the weed hazard, excess Pi fertilizers and herbicides are routinely applied, resu...

Journal: :Agricultural history 2009
David Carey

Despite extensive literature both supporting and critiquing the Green Revolution, surprisingly little attention has been paid to synthetic fertilizers' health and environmental effects or indigenous farmers' perspectives. The introduction of agrochemicals in the mid-twentieth century was a watershed event for many Mayan farmers in Guatemala. While some Maya hailed synthetic fertilizers' immedia...

2013
Asad M F AlKhader Azmi M Abu Rayyan

A greenhouse pot experiment was conducted to evaluate the effect of phosphorous (P) fertilizers application to an alkaline calcareous soil on the water use efficiency (WUE) of lettuce cultivar "robinson" of iceberg type. Head fresh and dry weights, total water applied and WUE were affected significantly by the P fertilizer type and rate. P fertilizers addition induced a significant enhancement ...

Journal: :Plant and Soil 2022

Abstract Aims Most crops are supplemented with selenium (Se) through the exogenous addition of inorganic Se fertilizer. There is a lack in-depth research on organic fertilizers. Meanwhile, dosage range between human deficiency and toxicity narrow, so content agricultural products needs to be controlled within reasonable interval. Methods accumulation speciation in rice were analyzed compared du...

2009
Alison Cullen Cameron Clark Georgine Yorgey

The following literature review explores the links between the use of macroand micronutrient fertilizers and human nutrition. The review focuses on the academic literature covering the effects of fertilizers on plant and human nutrition in areas with nutrient deficient soils, with a particular emphasis on South Asia and Sub-Saharan Africa. Additionally, the review identifies a few of the primar...

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