Dry Matter and Nutrient Accumulation Curve in Cabbage Crop

Abstract

Cabbage cultivars currently cultivated present high yield potential and may present differences regarding absorption and use of nutrients. Thus, studies quantifying plant growth and nutrient accumulation are the basis to improve fertilization efficiency and optimize yield. This study aimed to determine the dry matter and nutrient (N, P, K, Ca, Mg, S, Cu, Fe, Mn, and Zn) accumulation curve of cabbage cultivars during two growing seasons. Cultivars Astrus Plus and Green Valley were cultivated during summer-autumn crop season, while Astrus Plus and Fênix during the autumn-winter crop season. Plants were sampled after transplanting at 10-day intervals until harvest. Dry matter and nutrient accumulations are variable with growing season and cultivar. The highest dry matter and nutrient accumulation rates occur in the last ten days of the cycle. Fertilizations with N, P, K, Fe, and Zn should receive more attention due to higher harvest indices.

Effect of exogenous plant growth regulators on carbon-nitrogen metabolism and flower-pod abscission of relay strip intercropping soybean

“…花 荚脱 落率 , 决 定 大豆产 量构 成因素 和产 量的形 成 [1][2] ; 过高的花荚脱落率降低大豆单株有效荚数和 单株粒数, 是限制大豆发挥产量潜力的主要因素 [3] 。 研究表明, 大豆花荚的形成与脱落受植物内源激素 信号水平变化和同化物供应有效性的协同调控 [4][5] ; 碳、氮代谢是植物体内重要的代谢途径, 调控不同 时期的养分供应水平, 决定作物生长发育, 影响大 豆花荚形成与脱落 [6] 。栽培措施的优化和化控技术 的应用能促进植株生长、提高作物产量, 是发掘大 豆产量潜力的重要途径 [7][8][9] 。 调节剂能影响作物在不同生育时期的生长发育, 协调不同器官间的养分分配状况, 提高对环境的适 应性 [10][11][12] 。烯效唑(S3307)是一种能抑制赤霉素生物 合成的高效植物生长延缓剂 [8] ; 闫艳红等 [13] 发现, 叶面喷施 S3307 能通过改善大豆叶片碳氮代谢水平, 增加大豆的单株有效荚数与百粒重。2-N,N-二乙氨 基乙基乙酸酯(diethyl aminoethyl hexanoate, DTA-6) 作为一种新型的植物生长调节剂, 可有效提高作物 的品质和产量, 已广泛应用于玉米、大豆、花生等 作物 [14][15] 。6-苄基腺嘌呤(6-benzylaminopurine, 6-BA) 通过促进细胞分裂素的生物合成调节植物细胞的增 殖和分化 [16] , 具有延缓叶片衰老和保绿等作用 [17] 。 玉米-大豆带状套作模式是我国西南地区的主 推模式, 能提高复种指数和土地利用率, 实现对自 然资源的充分利用 [18] 。套作大豆因苗期受玉米荫蔽 影响处于生长劣势, 营养生长期间干物质积累不足, 营养生长与生殖生长之间的平衡被打破 [19] ; 养分供 应失衡加剧花、荚器官间养分竞争, 促使花败育与 荚脱落, 减少开花结荚数与单株有效荚数, 降低大 豆产量 [20][21][22]…”

Nutrient Uptake and Partitioning in Oriental Lilium

“…Nutrient accumulation through the growing season has been determined mainly for horticultural crops, including tomato [11], cabbage [12], onion [10] and potato [13], and for grain or cereal crops such as soybean [14][15][16], corn [17], dry bean [9] and sesame [18]. However, little information for nutrient accumulation in ornamental species has been published, although there are some studies that focus on poinsettia [19], chrysanthemum [20] and lisianthus [21].…”

Critical dilution curves for calcium, magnesium, and sulfur in potato (Solanum tuberosum L. Group Andigenum) cultivars Diacol Capiro and Pastusa Suprema

“…In order to improve our knowledge of the nutrition of potato with Ca-Mg-S, it is of interest to establish what type of relationship exists between these nutrients as the crop develops and to understand the accumulation dynamics in the harvest organs (Duarte et al, 2019;Naumann et al, 2020). The objectives of this research were to develop the critical dilution curves and harvest indices of Ca, Mg, and S in the potato (Solanum tuberosum L. Group Andigenum) and to analyze the relationships among these nutrients.…”