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The Uptake of Phosphorous and Potassium of Rice as Affected by Different Water and Organic Manure Management
Sajal Roy,
Md. Abul Kashem,
Khan Towhid Osman
Issue:
Volume 6, Issue 2, April 2018
Pages:
31-40
Received:
8 March 2018
Accepted:
23 March 2018
Published:
24 April 2018
DOI:
10.11648/j.jps.20180602.11
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Abstract: The effects of two water regimes viz. continuous ponding (CP) and intermittent ponding (IP) along with three organic amendments such as cow manure (CM), poultry manure (PM) and rice husk (RH) on growth and yield of rice (Oryza sativa L.) was studied in this work. Rice was grown in pots having sandy loam soils in the Department of Soil Science, University of Chittagong, Bangladesh. Organic amendments generally improved yield and concentration as well as accumulation of phosphorus and potassium under both CP and IP conditions. The dry weight of grain and straw did not differ significantly among the organic amendments. The concentration and accumulation of phosphorus in different parts of rice plants was found higher in CP condition in comparison to IP under all organic amendments. However, the uptake of potassium was higher under IP condition in general, and the maximum concentration and accumulation was found when poultry manure was incorporated with soil under IP condition. Total accumulation of phosphorus followed the order of grain>shoot>root, and the sequence of potassium accumulation was found as shoot>grain>root. The results of the present experiment indicated that intermittent irrigation with organic amendments especially poultry manure could be one of the best approaches for maintaining better yield of rice and uptake of potassium with application of minimum irrigation water.
Abstract: The effects of two water regimes viz. continuous ponding (CP) and intermittent ponding (IP) along with three organic amendments such as cow manure (CM), poultry manure (PM) and rice husk (RH) on growth and yield of rice (Oryza sativa L.) was studied in this work. Rice was grown in pots having sandy loam soils in the Department of Soil Science, Univ...
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Effect of Sowing Date on Grain Endosperm Chalkiness of Different Rice Varieties
Dongyan Kong,
Bo Peng,
Yu Peng,
Xiaohua Song,
Juan Peng,
Chenhan Huang,
Yueyuan Wang,
Jinhe Li,
Yanfang Sun,
Ruihua Pang,
Huilong Li,
Jintiao Li,
Lin Liu,
Shizhi Song,
Qiying Zhou,
Bin Duan,
Tondi-Yacouba Nassirou,
Hongyu Yuan
Issue:
Volume 6, Issue 2, April 2018
Pages:
41-51
Received:
3 April 2018
Accepted:
24 April 2018
Published:
18 May 2018
DOI:
10.11648/j.jps.20180602.12
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Abstract: Grain chalkiness is a major cause of low quality in many rice-producing areas of the world. Though, little is known about the relationship between different sowing dates and the characters of grain chalkiness for grain quality improvement in rice. In this study, the grain chalkiness characters of twenty-one and seven rice varieties were investigated across four and six sowing dates in two years. The results showed a wide range variation of grain chalkiness in diverse varieties across sowing dates, and a positive correlation between chalkiness rate (CR) and the temperature during grain filling phase for all of the varieties. Slight correlation between grain chalkiness area (CA) and the temperature during grain filling phase was also observed for the test varieties in 2015. The chalkiness characters of some varieties were dramatically sensitive to heading dates, while other varieties had a low level of CA and CR across different sowing dates. Improvement of grain chalkiness could be realized by selecting optimum sowing dates in rice production and varieties with low and stable chalkiness could be considered as the elite parental lines in the artificial breeding of the new rice varieties. Therefore, our results have paved the way for the improvement of grain chalkiness in rice.
Abstract: Grain chalkiness is a major cause of low quality in many rice-producing areas of the world. Though, little is known about the relationship between different sowing dates and the characters of grain chalkiness for grain quality improvement in rice. In this study, the grain chalkiness characters of twenty-one and seven rice varieties were investigate...
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The Influence of the Dam Construction on Plant Types in Shiyang River
Wei Huaidong,
Li Jingjing,
Zhang Bo,
Li Ya
Issue:
Volume 6, Issue 2, April 2018
Pages:
52-61
Received:
19 June 2018
Published:
20 June 2018
DOI:
10.11648/j.jps.20180602.13
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Abstract: Shiyang River Basin, as the high extent of exploitation & utilization of its resources and severe ecological & environmental issues, has always received much attention from scholars at home and abroad. The research, with reference to previous scholars’ conclusion and field survey, showed that the dam construction has resulted in the radical changes of water resource distribution as well as water resource utilization mode, which eventually had a strong effect on plant species and community change along the middle and lower reaches of the Shiyang River. The mainly result include: 1) The vegetation area, vegetation cover and biomass all decreased, plant types had changed from wet series to xeric series, Tamarix ramosissima, Kalidium foliatum and Phragmites australis etc community had gradually decreased, the vegetation with more drought tolerance had gradually occupy the dominant position, mainly includes Nitraria tangutorum, Reaumuria soongarica, Lycium ruthenicum etc, especially Nitraria tangutorum had become constructive species in most of the place in the middle and lower reaches of the Shiyang River since 1950's. 2) In the middle and lower reaches of the Shiyang River, The vegetation formed various adaptive way and xeromorphic characteristics in order to adapt the adverse environment such as the serious sand storm, the higher difference of temperature between day and night, the lower precipitation and the higher evaporation etc. The ring gate types gradually became the main types of structure of leaf in the region of relatively severe of human disturbance, the full gate types plants and normal types plants gradually increased in the region of relatively less of human disturbance, the type of structure of leaf changed from the ring gate types and normal types to irregular molding in the region of sharply decreased of groundwater. The dam construction caused reclaiming wasteland for farming on a large scale, disproportionate use of water resource, groundwater overdraft of and deterioration of water quality etc, and this eventually lead to change of areas and types of vegetation.
Abstract: Shiyang River Basin, as the high extent of exploitation & utilization of its resources and severe ecological & environmental issues, has always received much attention from scholars at home and abroad. The research, with reference to previous scholars’ conclusion and field survey, showed that the dam construction has resulted in the radical changes...
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Utilization Value and Suggestions on the Development of Oil Peony
Yang Yuzhen,
Chen Gang,
Li Juan,
Pan Ting
Issue:
Volume 6, Issue 2, April 2018
Pages:
62-67
Received:
19 June 2018
Published:
20 June 2018
DOI:
10.11648/j.jps.20180602.14
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Abstract: Tree peony was widely cultivated for approximately 2,000 years, which originated in China. Oil Peony is peony varieties that can be used to produce seed oil as edible oil. In 2001, the Ministry of Health approved that seed oil made by pressing and decoloring could be used as a new resource food. It is an emerging woody oil crop, and has landscape, medicinal and ecological value. Nowadays, it has become an important means to promote targeted poverty alleviation. Oil peony industry is new industry with promising prospect. But at present, the fundamental research on oil peony industry is still very weak, the industry chain needs to be elongated. Oil peony industry is still in the situation of blind development and cultivation on the whole. Based on the issues of variety selection, high-yield cultivation techniques, base construction, and deep processing technology in the oil peony industry in China. This paper put forward the suggestions and thinking for the national relevant policy support, cultivating fine varieties, establish germplasm storehouses and achieving specialized production.
Abstract: Tree peony was widely cultivated for approximately 2,000 years, which originated in China. Oil Peony is peony varieties that can be used to produce seed oil as edible oil. In 2001, the Ministry of Health approved that seed oil made by pressing and decoloring could be used as a new resource food. It is an emerging woody oil crop, and has landscape, ...
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