Shallot growth and yield supported by irrigation and nitrogen application in utilizing dry land area in Mesuji, Lampung Province, Indonesia

IF 0.5 Q4 AGRONOMY
T. Manik, P. B. Timotiwu, Mua’ddin Mua’ddin
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引用次数: 0

Abstract

Lampung Province, Indonesia local government intended to extend shallot cultivation in Mesuji Regency, Lampung (-3.86, 105.43). Mesuji has 21,863.5 ha dry land area, with unproductive land of 10,325.6 ha which could be potential for growing shallot. However, horticulture crops such as shallot often face obstacles in dry land since dry land characterized with poor soil nutrient and limited water. The objective of this research are to analyze the effects of nitrogen fertilizer and different irrigation volumes on shallot growth and production, investigate shallot suitability to Mesuji agro-climate, and estimate shallot yield potential in Mesuji. The treatments on factorial split block were: without N, 80 kg N ha-1 , 160 kg N ha-1, and 240 kg N ha-1 and the irrigation levels: 25, 50, 75 and 100% of ETc; ETc is crops evapotranspiration. The Mesuji agro-climate was evaluated using standardized precipitation index (SPI) and the yield was simulated by Aquacrop model. The results showed that the effort of shallots production with a high fresh weight of bulbs and biomass in the Mesuji area requested water at least 75% ETc and N fertilizer doses of 160 kg N ha-1. The SPI indicated near normal condition was more than 65%, and drought existed in a small percentage in both places (a total of 16.9%  for Brebes the centre of shallot production  and 19.43% for Mesuji). The AquaCrop simulation gave a good yield estimation (simulated 19.451 ton ha-1 and observed 17.351 ton ha-1). There is a possibility that shallot will grow well in the Mesuji area even though the quality of the shallot should be further tested.
印尼楠榜省梅苏吉旱地灌溉和施氮对大葱生长和产量的支持
印度尼西亚楠榜省地方政府打算在楠榜省Mesuji Regency(-3.86, 105.43)推广大葱种植。Mesuji有21863.5公顷的旱地,10325.6公顷的非生产性土地可以种植葱。然而,由于旱地土壤养分差,水分有限,大葱等园艺作物在旱地往往面临障碍。本研究旨在分析氮肥施用和不同灌水量对梅苏集小葱生长和生产的影响,探讨梅苏集小葱对农业气候的适宜性,评估梅苏集小葱的产量潜力。析因分割块处理分别为:无氮、80 kg N ha-1、160 kg N ha-1和240 kg N ha-1,灌水量分别为25%、50%、75%和100% ETc;ETc是农作物的蒸散量。采用标准化降水指数(SPI)评价Mesuji农业气候,采用Aquacrop模型模拟产量。结果表明:在Mesuji地区,生产鳞茎高鲜重和生物量高的大葱,需水量不低于75% ETc,氮肥用量为160 kg N ha-1。SPI显示近正常状态超过65%,两地均存在小比例干旱(葱生产中心布里布和梅苏吉分别为16.9%和19.43%)。AquaCrop模拟给出了较好的产量估计(模拟产量为19.451 ton ha-1,观测产量为17.351 ton ha-1)。虽然大葱的质量还有待进一步检验,但在Mesuji地区大葱还是有可能长势良好的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Sains Tanah
Sains Tanah Environmental Science-Pollution
CiteScore
1.90
自引率
0.00%
发文量
16
审稿时长
8 weeks
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