Výsledky vyhledávání - "S. K. de Datta"

Effect of nitrogen fertilization on rice spikelet differentiation and survival

Autor: S. K. De Datta, N. Senanayake, R. E. L. Naylor

Publikováno v: The Journal of Agricultural Science. 127:303-309

SUMMARYExperiments were conducted in glasshouses at the Agronomy Department, International Rice Research Institute (IRRI), Philippines, in 1987 and 1988 to test the effects of small amounts of additional N applied at different times during the vegeta

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::431663e2291f82c3a9a7436b8033670d
https://doi.org/10.1017/s0021859600078461

Zobrazit plný text záznamu

Long-term Comparison of the Agronomic Efficiency and Residual Benefits of Organic and Inorganic Nitrogen Sources for Tropical Lowland Rice

Autor: Kenneth G. Cassman, M. A. Dizon, M. I. Samson, S. P. Liboon, S. K. De Datta, S. T. Amarante

Publikováno v: Experimental Agriculture. 32:427-444

SUMMARYNitrogen efficiency from Azolla microphylla or Sesbania rostrata green manure, rice straw, and inorganic fertilizer-N was compared in two long-term experiments with irrigated lowland rice (Oryza sativa L.). Treatments included a control and ea

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2de260ea823d24a0578497b157cce36d
https://doi.org/10.1017/s0014479700001514

Zobrazit plný text záznamu

Yield and nitrogen response of lowland rice (Oryza sativa L.) to Sesbania rostrata and Aeschynomene afraspera green manure in different marginally productive soils in the Philippines

Autor: K. H. Diekmann, S. K. De Datta, K. H. Dickmann, Johannes C. G. Ottow

Publikováno v: Biology and Fertility of Soils. 21:103-108

Organic-N fertilizers in the form of flood-tolerant, leguminous, stem-nodulating Sesbania rostrata and Aeschynomene afraspera may be useful alternatives to resource-poor rice farmers if applied as green manure. Therefore, the accumulation of N by the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bfb4e330612a8aa35f20a391bd51af1b
https://doi.org/10.1007/bf00336000

Zobrazit plný text záznamu

Phosphorus availability to irrigated lowland rice as affected by sources, application level and green manure

Autor: S. K. De Datta, D. N. Medhi

Publikováno v: Nutrient Cycling in Agroecosystems. 46:195-203

To evaluate alternative fertilizer phosphorus (P) sources in lowland rice, two field experiments were conducted under irrigated conditions in Quezon Province, Philippines during 1990–1991 crop year. In another field experiment fertilizer P recyclin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::df262d288b73a7fc11cd173e0b9229d3
https://doi.org/10.1007/bf00420554

Zobrazit plný text záznamu

Residual effect of fertilizer phosphorus in lowland rice

Autor: S. K. De Datta, D. N. Medhi

Publikováno v: Nutrient Cycling in Agroecosystems. 46:189-193

To evaluate residual recoveries of fertilizer phosphorus (P) two field experiments were conducted in Quezon Province, Philippines during 1991 dry season, under irrigated condition. Average grain yield increase was 0.50–0.9 t/ha due to residual effe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::88d924a91420a65b1f802c78b78361c7
https://doi.org/10.1007/bf00420553

Zobrazit plný text záznamu

Variation in development of contrasting rice cultivars

Autor: S. K. De Datta, R. E. L. Naylor, W. J. Thomson, N. Senanayake

Publikováno v: The Journal of Agricultural Science. 123:35-39

SummaryExperiments were conducted in glasshouses at IRRI, Philippines, during 1987 and 1988 to identify varietal differences in apical development using six rice cultivars having extreme characters; Jirasar 280 (early senescence), Neo-Dunghan 1 (late

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d7fbeaf29c091854477a3f7ef75ebb8f
https://doi.org/10.1017/s0021859600067745

Zobrazit plný text záznamu

Nitrogen losses in puddled soils as affected by timing of water deficit and nitrogen fertilization

Autor: S. K. De Datta, E. G. Castillo, R. J. Buresh

Publikováno v: Plant and Soil. 157:197-206

Erratic rainfall in rainfed lowlands and inadequate water supply in irrigated lowlands can results in alternate soil drying and flooding during a rice (Oryza sativa L.) cropping period. Effects of alternate soil drying and flooding on N loss by nitri

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2ed213b53b705a17c7f7b243a9c90f69
https://doi.org/10.1007/bf00011048

Zobrazit plný text záznamu

Development changes related to nitrogen-use efficiency in rice

Autor: S. K. De Datta, F. E. Broadbent

Publikováno v: Field Crops Research. 34:47-56

With limited new land available for rice ( Oryza sativa L.) production in Asia and the need to conserve fossil energy, technologies giving maximum grain yield per unit of available nitrogen applied should be explored. In this study we examine factors

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1b4360d44567ca6044bf48ed74091bc0
https://doi.org/10.1016/0378-4290(93)90110-9

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání