نتایج جستجو برای: upland rice
تعداد نتایج: 75804 فیلتر نتایج به سال:
Although widely consumed as white rice, there are special rice cultivars that contain aromas, colors and nutrients reach market niches, constitute alternatives to vary the Brazilian menu farmer’s income. Most genotypes of have nutritional characteristics superior those with call for better health, which is a growing concern general population. Based on these assumptions, objective was evaluate ...
Correspondence analyses were used to explore the relationships between yield and populations of Pratylenchus zeae in an upland rice field and in a greenhouse experiment. Initial soil (Pi) and final root (Pf) population densities of P. zeae, and yield (Y) of rice cv. UPL Ri5 were determined at 490 spots in the field. Very low Y was linked to very high Pf. Low Y was linked to medium or high Pi an...
The parasitic weeds Striga asiatica and Striga hermonthica cause devastating yield losses to upland rice in Africa. Little is known about genetic variation in host resistance and tolerance across rice genotypes, in relation to virulence differences across Striga species and ecotypes. Diverse rice genotypes were phenotyped for the above traits in S. asiatica- (Tanzania) and S. hermonthica-infest...
Recent field studies in rice paddy fields in Japan and China have shown that N2O is emitted to the atmosphere not only after the application of nitrogen fertilisers under flooded conditions but also in a period from the final drainage to submergence in the following rice-growing season through nitrification or denitrification. Those results clearly indicate that CH4 and N2O emissions in rice pa...
Increasing numbers of studies suggest that farm trees and agroforestry practices improve household food security. Some have further speculated that poor farmers are responding to decreasing access to land and declining agricultural productivity by increasing farm tree and agroforestry activities because of the multiple benefits of trees, which are cash crops that demand relatively low levels of...
Shahbazi H, Tarang A, Padasht F, Hosseini Chaleshtari M, Allah-Gholipour M, Khoshkdaman M, Mousavi Qaleh Roudkhani SA, Nazari Tabak S, Asadollahi Sharifi F, Pourabbas Dolatabad M (2022) The reaction of 109 rice lines to blast disease. Plant Pathology Science 11(1):24-35. Doi: 10.2982/PPS.11.1.24. Introduction: Blast caused by Pyricularia oryzae is the most important fungal disease of ri...
We developed a new method of using seedling trays to evaluate root angle distribution in rice (Oryza sativa. L), and found a wide genetic variation among cultivars. The seedling tray method can be used to evaluate in detail the growth angles of rice crown roots at the seedling stage by allocating nine scores (10° to 90°). Unlike basket methods, it can handle large plant populations over a short...
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