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Dynamics of solar radiation and soybean yield in agroforestry systems Anais da ABC (AABC)
CARON,BRAULIO O.; SGARBOSSA,JAQUELINE; SCHWERZ,FELIPE; ELLI,ELVIS F.; ELOY,ELDER; BEHLING,ALEXANDRE.
Abstract Soybean (Glycine max L.) monocropping have had a great socio-economic and environmental impact on the world and agroforestry systems has been considered an alternative for more sustainable production. The aim of this study was to evaluate the effect of different arrangements of agroforestry systems of the species E. urophylla x E. grandis and P. dubium and the pruning of the trees on the dynamics of solar radiation and soybean yield. A field experiment was conducted in Southern Brazil. In order to achieve the objective of the study, the solar radiation transmissivity and the productive performance of the soybean were evaluated. In this study, the soybean yield was determined by the arrangement of the agroforestry system and forest species...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Crop systems; Solar radiation transmissivity; Sustainable production; Tree pruning; Yield traits.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703799
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Genetic relationships of age at first calving, and reproductive traits of cows and yield traits for Holsteins in Hokkaido OAK
阿部, 隼人; 増田, 豊; 鈴木, 三義; MASUDA, Yutaka; SUZUKI, Mitsuyoshi.
初産分娩月齢と3産までの経産牛繁殖形質ならびに生産形質間について,AIREML法を用いた2形質アニマルモデルにより,遺伝的パラメータを推定した.記録は,(社)北海道酪農検定検査協会に集積された繁殖ならびに乳期記録,および(社)日本ホルスタイン登録協会北海道支局に集積された血統記録である.計算機の能力の制約からすべての記録を同時に分析することは困難であったため,牛群単位の無作為抽出により10万記録程度のサブセットを10個生成し,各サブセットに対し分析を行なった.遺伝率は,初産分娩月齢に対し0.22,経産牛繁殖形質に対し0.03~0.05と推定された.初産分娩月齢と経産牛繁殖形質との遺伝相関は絶対値で0.2を上回らなかった一方,生産形質との遺伝相関は2産以降で-0.3から-0.4と比較的高かった.2産以降の生産形質との好ましい関連から,初産分娩月齢の改良による長期的な生産性の向上の可能性が示された.
Palavras-chave: Age at first calving; Genetic correlation; Holstein; Reproductive traits of cows; Yield traits.
Ano: 2008 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3942
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Plant growth, radiation use efficiency and yield of sugarcane cultivated in agroforestry systems: An alternative for threatened ecosystems Anais da ABC (AABC)
SCHWERZ,FELIPE; MEDEIROS,SANDRO L.P.; ELLI,ELVIS F.; ELOY,ELDER; SGARBOSSA,JAQUELINE; CARON,BRAULIO O..
Abstract Sugarcane (Sacharum officinarum L.) monocropping has had a great socio-economic and environmental impact in Brazil, and agroforestry systems have been considered as an alternative for more sustainable production; however, there is a lack of field research under such conditions. The aim of this study was to evaluate the growth rates, radiation use efficiency and yield traits in sugarcane cultivated in the understory of Aleurites fordii, in two agroforestry arrangements and monocropping systems. A field experiment was conducted from July 2015 to June 2016 in the city of Frederico Westphalen, Rio Grande do Sul, Brazil. The radiation use efficiency, assimilate partitioning, leaf area index, absolute growth rate, net assimilation rate, number of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biomass partitioning; Crop systems; Growth rates; Sacharum officinarum; Yield traits.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703265
Registros recuperados: 3
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