Resultados de búsqueda - "potassium"

Nutrición mineral y actividad de nitrato reductasa en cafetos afectados por deficiencias minerales por Cavallini, J.A, Carvajal, J.F

“…Nitrate reduction potential was investigated in the coffee tree in relation to mineral deficiency Nitrogen, phosphorus, potassium, calcium, magnesium and sulphur deficiencies were studied on the grounds of their individual effect on the nitrate reductase activity (NRa) and chemical composition of leaves. …”
Enlace del recurso

Post-Fire Changes in Soil Chemistry of the Savannas of the Paraguayan Humid Chaco por Candia-Díaz, Ana Beatriz, Watler Reyes, William J, Rasche-Álvarez, Jimmy Walter, Laino-Guanes, Rafaela, Rejalaga-Noguera, Larissa Karina

“…This study evaluated the ef fects of burning on the pH, organic matter (OM), phosphorous (P), calcium (Ca), magnesium (Mg) and potassium (K) in the soil of savannas in the Benjamín Aceval district of the Paraguayan Humic Chaco, over the medium term (two years af ter the wildfire event). …”
Enlace del recurso

Why coconut water is both a biostimulant and an anti-cancer agent por Reyes Estevez, Estefany

“…Being rich in minerals (mainly potassium but also magnesium, calcium, and sodium), makes CW good for replenishing dehydration as well. …”

Suitable management options to improve the productivity of rice cultivars under salinity stress por Mel, V.C., Bado, V.B., Ndiaye, S., Djaman, K., Nati, D.A.B., Manneh, B., Futakuchi, K.

“…(i) nitrogen, phosphorus, and potassium fertilization: NPK; (ii) NPK combined with zinc: NPK-Zn, and (iii) NPK combined with gypsum: NPK-gypsum on the soil salinity level, the nutrient uptake and the productivity of different rice cultivars. …”
Enlace del recurso

Crops and farmers’ response to application of fecal sludge derived - Fortifer™ in different agro-ecological zones in Ghana por Nartey, Eric Gbenatey, Cofie, Olufunke O., Gebrezgabher, Solomie A., Nikiema, Josiane

“…Fortifer™ containing up to 3.0% nitrogen, 3.6% phosphorus, 1.3% potassium and 44.3% organic matter was applied to tomato, rice, maize and pepper in comparison to inorganic fertilizers at recommended rates. …”
Enlace del recurso

Elemental composition of the rice plant as affected by iron toxicity under field conditions por Sahrawat, K.L.

“…A field experiment was conducted in the 1997 dry season (January‐May) at an Fe toxic site in Korhogo, Ivory Coast, to determine the elemental composition of Fe tolerant (CK 4) and susceptible (Bouake 189) lowland rice varieties without and with application of nitrogen (N), phosphorus (P), potassium (K), and zinc (Zn). For both Fe‐tolerant and susceptible varieties, there were no differences in elemental composition of the whole plant rice tops, sampled at 30 and 60 days after transplanting rice seedlings, except for Fe. …”
Enlace del recurso

Response of potato crop to selected nutrients in central and eastern highlands of Kenya por Mugo, J., Karanja, N., Gachene, C.K.K., Dittert, K., Gitari, H.I., Schulte-Geldermann, Elmar

“…Stability analysis revealed that omission of N was more stable with a regression coefficient of 0.5; it was followed by P with a value of 1. Potassium, S and B were limiting nutrients only in some farms. …”
Enlace del recurso

Basal fertilizer effects on weed occurrence and rice yield in acid upland soil of West Africa at Bénin por Koné, B., Traoré, K., Touré, A.

“…Two years (2005 and 2006) fertilizer omission trial including nitrogen (N), potassium (K), phosphorus (P), calcium (Ca), magnesium (Mg) and zinc (Zn) was conducted in a randomized completed block design, with 4 replications at the Africa Rice Center experiment station, in Benin. …”
Enlace del recurso

Determinants pedologiques, climatiques et socioeconomiques sur le choix des agriculteurs de la Casamance et du Senegal oriental a cultiver le riz de plateau por Julien Diatta

“…These include climatic data (rainfall, relative humidity, maximum temperatures, minimum temperatures, radiation), soil data (hydrogen potential, phosphorus, potassium, nitrogen, sodium, iron, cation exchange capacity, carbon content, sand, silt, clay) and socio-economic data (social capital, land ownership, human capital, physical capital, choice of farming activities, geographical location) were collected by SODAGRI, ISRA BAME and CIRAD (funded by CRP RICE), and by the author for study validation purposes. …”
Enlace del recurso

Policies to promote environmentally sustainable fertilizer use and supply to 2020 por Bumb, Balu L., Baanante, Carlos A.

“…In the mid-1960s, when projections of global starvation were common, no one questioned the role of mineral fertilizer (plant nutrients, mainly nitrogen, phosphorus, and potassium from inorganic sources) in promoting food production in the food-deficit countries. …”
Enlace del recurso

Edaphic factors modulating phosphorus availability in lowland rice systems, Nigeria por Mesele, S.A., Ajiboye, G.A., Talbot, J.

“…The results show kaolinite, quartz, potassium(K)-feldspars, and mixed-layered smectite as the predominant minerals. …”
Enlace del recurso

Teff (Eragrostis tef Zucc) yield response to NPSB blend and KCl fertilizer application on Planosols por Biratu, Gizachew Kebede, Elias, Eyasu, Berecha, Gezahegn, Mamuye, Melkamu

“…This study reports the effect of different rates of NPS and its potassium and boron blend on teff yield. Eight treatments: no application (T1), 100 NPS (T2), 200 NPS (T3), 300 NPS (T4), 100 NPS + 50 KCl (T5), 200 NPS + 100 KCl (T6), 300 NPS + 150 KCl (T7), and 100 NPSB kg/ha (T8) were arranged in a randomized complete block design (RCBD) and replicated four times. …”
Enlace del recurso

PROGRESS REPORT: Developing Data‑Driven Agronomic Recommendations for Site‑Specific Nutrient Management on Rice in Cambodia por Mabilangan, Abigail, Mkuhlani, Siyabusa, Saito, Kazuki

“…Analyses reveal higher and more stable yields in the dry season than in the wet season; strong yield responses to nitrogen, a narrow -optimum for phosphorus, and potassium responses that peak at intermediate rates. …”
Enlace del recurso

Decomposition of and nutrient release from ruminant manure on acid sandy soils in the Sahelian zone of Niger, West Africa por Esse, P.C., Buerkert, Andreas, Hiernaux, Pierre H.Y., Assa, A.

“…The present research in south west Niger was undertaken to examine the role of micro organisms and meso fauna on in situ release rates of nitrogen (N), phosphorus (P) and potassium (K) from cattle and sheep goat manure collected from village corrals during the rainy season. …”
Enlace del recurso

Similarities in functional attributes and nutritional effects of magadi soda and bean debris-ash used in cooking African traditional dishes por Mamiro, P, Nygaya, M, Kimani, P.M., Mamiro, D, Jumbe, T, Macha, J., Chove, B

“…The results indicated that high concentrations of sodium ions (30.2%) and potassium ions (64.2%) were observed in magadi soda and bean debris-ash, respectively. …”
Enlace del recurso

Geochemical modelling of the effects of a proposed uranium tailings pond on groundwater quality. Technical article por Brindha, Karthikeyan, Elango, L.

“…Groundwater samples were collected from six dug wells in the Nalgonda district, Andhra Pradesh, in southern India, once every 2 months from March 2008 to January 2010, and analysed for calcium, magnesium, sodium, potassium, chloride, sulphate, carbonate, bicarbonate, and uranium. …”
Enlace del recurso

Relationship of phenotypic structures and allelochemical compounds of okra (Abelmoschus spp.) to resistance against Aphis gossypii Glover por Abang, A.F., Srinivasan, R., Kekeunou, S., Yeboah, M., Hanna, R., Lin, M.Y., Tenkouano, A., Bilong-Bilong, C.F.

“…Analysis of various phytochemicals in selected okra accessions revealed that higher nitrogen and potassium levels made the okra accessions susceptible to aphids during the reproductive stage of the plants. …”
Enlace del recurso

Reducing spatial variability of soybean response to rhizobia inoculants in farms of variable soil fertility in Siaya County of western Kenya por Thuita, Moses N., Vanlauwe, Bernard, Mutegi, E., Masso, C.

“…There was soil acidity and a widespread deficiency of potassium, nitrogen, and phosphorus. Inoculation and nutrient source led to increases in nodulation and nodule occupancy. …”
Enlace del recurso

Amelioration de la production de ligname a travers la fertilisation minerale en zone de savene de Cote dIvoire por Soro, D., Dao, D., Carsky, R.J., Asiedu, Robert, Assa, A., Girardin, O.

“…Then, while the amount of nitrogen is increased with both dose T1 and T2, potassium decreases with the highest dose (T2). Yield increase varies from 14 % to 71 % according to varieties with dose T1. …”
Enlace del recurso

Addition of food preservatives to hydroxypropyl methylcellulose-lipid edible coatings to control postharvest penicillium molds of citrus fruit por Valencia-Chamorro, Silvia A., Pérez-Gago, María B., Del-Río, Miguel A., Palou, Lluís

“…Film disks containing sodium salts of parabens, potassium sorbate (PS), or sodium benzoate (SB) were the most effective to inhibit in vitro the pathogens Penicillium digitatum and Penicillium italicum, the causal agents of citrus postharvest green and blue molds, respectively. …”
Enlace del recurso