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Registros recuperados: 7
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DYNAMIC ECONOMIC ANALYSIS OF A RESIDUE MANAGEMENT SYSTEM IN COTTON AgEcon
Paudel, Krishna P.; Lohr, Luanne.
Residue management system (RMS), comprised of no till cultivation, a winter cover crop, and poultry litter, could be an alternative to existing management system in cotton production in the Georgian Piedmont. We compare the productivity and profitability of RMS with the current system over time, focusing on the role of organic matter. Using dynamic bioeconomic modelling technique, we show that the net return and land value difference between these two systems increase as the terminal period increases. We conclude that if financial and capital markets based on organic matter work efficiently, farmers will choose RMS in cotton production.
Tipo: Working or Discussion Paper Palavras-chave: Residue management; Organic matter; Productivity; Crop Production/Industries.
Ano: 1998 URL: http://purl.umn.edu/16677
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ECONOMIC EFFECT OF IMPERFECT INFORMATION ON CONSERVATION DECISIONS AgEcon
Paudel, Krishna P.; Lohr, Luanne.
Cotton farmers in the Piedmont region incorrectly believe conservation systems with winter cover crop and no-till cultivation yield less than conventional systems. We model the effect of organic matter on productivity and show how ignoring this effect causes returns to be underestimated. Farmers with imperfect information underinvest in residue management.
Tipo: Working or Discussion Paper Palavras-chave: Residue management; Organic matter; Productivity; Comparative statics; Farm Management; Land Economics/Use; Productivity Analysis.
Ano: 1996 URL: http://purl.umn.edu/16645
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Evaluation of no-till drill performance under various residue management methods in wheat cropping in the south of Iran CIGR Journal
Roozbeh, Majid.
Heavy crop residue on the soil surface impedes no-till drill performance and subsequent crop production in conservation tillage systems and therefore limit its adoption by farmers. Therefore, a field study was conducted to determine the effects of various residue management methods on no-till drill performance. The experimental design was a randomized complete block in five replications. The residue management systems were in four levels of leaving (R.M1), removing (R.M2), chopping (R.M3) and disking (R.M4). Factor analysis was used to group and identify the most effective indicators of drill performance. The results showed that various residue management methods had a significant effect on sowing depth, speed of emergence, effective field capacity, and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Direct drilling; Drill performance; Residue management; Wheat.
Ano: 2020 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5559
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Returning Winter Cover Crop Residue Influences Soil Aggregation and Humic Substances under Double-cropped Rice Fields Rev. Bras. Ciênc. Solo
Tang,Haiming; Xiao,Xiaoping; Tang,Wenguang; Wang,Ke; Li,Chao; Cheng,Kaikai.
ABSTRACT Residue management in cropping systems may improve soil quality. However, there are few studies on the effects of residue management on soil aggregation and carbon content in the humin (C-HUM), humic acid (C-HAF) and fulvic acid (C-FAF) fractions in South China. Therefore, the effects on soil aggregation and on the C-HUM, C-HAF, C-FAF from incorporating winter cover crop residues in a double-cropped rice (Oryza sativa L.) system in South China fields were studied. The experiment has been conducted since winter 2004. Five winter cropping systems were used: rice-rice-ryegrass (Ry-R-R), rice-rice-Chinese milk vetch (Mv-R-R), rice-rice-potato (Po-R-R), rice-rice-rape (Ra-R-R) and rice-rice with winter fallow (Fa-R-R). The results indicated that the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Paddy; Residue management; Soil aggregation; Soil carbon carbon.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100425
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Sustainable and Low Greenhouse Gas Emitting Rice Production in Latin America and the Caribbean: A Review on the Transition from Ideality to Reality. Repositório Alice
CHIRINDA, N.; ARENAS, L.; KATTO, M.; LOAIZA, S.; CORREA, F.; ISTHITANI, M.; LOBOGUERRERO, A. M.; MATÍNES-BORÓN, D.; GRATEROL, E.; JARAMILLO, S.; TORRES, C. F.; ARANGO, M.; GUSMÁN. M.; AVILA, I.; HUBE, S.; KURTZ, D. B.; ZORRILLA, G.; TERRA, J.; IRISARRI, P.; TARLERA, S.; LAHUE, G.; SCIVITTARO, W. B.; NOGUERA, A.; BAYER, C..
bitstream/item/173478/1/Walkyria-Sustainability-10-00671-versao-publicada.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Greenhouse gas emissions; Mitigation prospect; Nitrous oxide emission; Paddy fields; Residue management; Methane emission.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1088445
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ผลของการจัดการแปลงอ้อยระยะยาวต่อการกระจายตัวของราก และการให้ผลผลิตอ้อย Thai Agricultural
Ratchada Pratcharoenwanich; Taksina Sansayawichai; Kobkiet Paisanjaroen; Sureeporn Makrathok.
Tipo: PhysicalObject Palavras-chave: Sugarcane; U-thong 3 variety; Sugarcane production; Field management; Cultural practice management; Incorporate cane residue; Residue management; Burning cane residue; Ratoon cane; Root system; Root distribution; Cane yield; อ้อยตอ; พันธุ์อู่ทอง 3; การปลูกอ้อย; การจัดการแปลง; การเขตกรรม; การไถกลบใบอ้อย; การจัดการซากพืช; การเผาเศษซากอ้อย; ระบบราก; การแผ่กระจายราก; การหยั่งราก; การเจริญเติบโต; ผลผลิตอ้อย.
Ano: 2012 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5829
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植酸酵素基因轉殖馬鈴薯收穫田區之殘株管理-浸水處理評估 Taiwan Agricultural Research Institute
陳烈夫; 吳明哲; 呂秀英; Lit-Fu Chen; Min-TzeWu; Hsiu-Ying Lu.
[[abstract]]馬鈴薯 (Solanum tuberosum L.) 是世界上最重要的非禾穀類糧食作物。基因轉殖馬 鈴薯2-1 品系,是由‘克尼伯’ (Kennebec) 品種轉殖植酸酵素基因 (phytase gene) 所產生 的基因轉殖作物。為了探討浸水處理對基因轉殖馬鈴薯收穫田區之殘株管理的效果,本 研究在農業試驗所於2006 年秋作種植的收穫田區內進行相關試驗。試驗田間設計採兩 因子之裂區設計,三區集,以浸水或不浸水兩種處理為主區,轉殖和非轉殖兩品 (種) 系 為副區。浸水區在試驗期間一直保持水深淹過田面3 cm。浸水後第7、17、28、51、70 天分別自每小區內各逢機取出4 株,調查取樣植株上的殘留薯球總數,以進行差異性比 較。結果發現,浸水17 天起處理之間的殘留薯球數量即有顯著差異,浸水28 天以上, 轉殖與非轉殖馬鈴薯殘株皆可被完全清除。本試驗評估結果顯示浸水為清除轉殖馬鈴薯 土壤中殘薯的有效管理方法;此外,‘克尼伯’轉殖2-1 品系的田間棄置殘株產量明顯低 於‘克尼伯’,亦可供生物安全評估之參考。
Palavras-chave: 馬鈴薯 基因轉殖作物 植酸酵素基因 殘株管理 浸水 Potato; Solanum tuberosum; Genetically modified crops; Phytase gene; Residue management; Flooding [[classification]]1.
Ano: 2008
Registros recuperados: 7
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