Gatsios Anastasios, Ntatsi Georgia, Celi Luisella, Said-Pullicino Daniel, Tampakaki Anastasia, Savvas Dimitrios
Laboratory of Vegetable Crops, Department of Crop Science, Agricultural University of Athens, 11855 Athens, Greece.
Department of Agricultural, Forest and Food Sciences, University of Torino, 10095 Grugliasco, TO, Italy.
Plants (Basel). 2021 Nov 9;10(11):2419. doi: 10.3390/plants10112419.
Information about the availability of soil mineral nitrogen (N) in organic greenhouse tomatoes after the application of mobile green manure (MGM), and its impact on plant nutrient status and yield is scarce. Considering this knowledge gap, the effects of legume biomass from faba beans that are cultivated outdoors (FAB), or from feed-grade alfalfa pellets at two different doses (AAL = 330 g m; AAH = 660 g m) that were applied as MGM on the nutrition and yield of an organic greenhouse crop of tomatoes were evaluated. All of the MGM treatments increased the mineral N concentrations in the soil throughout the cropping period, and the total N concentration in tomato leaves when compared to the untreated control. FAB and AAH treatments had a stronger impact than AAL in all of the measured parameters. In addition, AAL, AAH, and FAB treatments increased the yield compared to the control by 19%, 33%, and 36%, respectively. The application of MGM, either as faba bean fresh biomass or as alfalfa dry pellets, in organic greenhouse tomatoes significantly increased the plant available soil N, improved N nutrition, and enhanced the fruit yield. However, the N mineralization rates after the MGM application were excessive during the initial cropping stages, followed by a marked decrease thereafter. This may impose an N deficiency during the late cropping period.
关于在有机温室番茄中施用流动性绿肥后土壤矿质氮（N）的有效性及其对植物养分状况和产量影响的信息很少。考虑到这一知识空白，评估了室外种植的蚕豆（FAB）或两种不同剂量（AAL = 330 g/m；AAH = 660 g/m）的饲料级苜蓿颗粒作为流动性绿肥对有机温室番茄作物营养和产量的影响。与未处理的对照相比，所有流动性绿肥处理在整个种植期都提高了土壤中的矿质氮浓度以及番茄叶片中的总氮浓度。在所有测量参数中，FAB和AAH处理的影响比AAL更强。此外，与对照相比，AAL、AAH和FAB处理的产量分别提高了19%、33%和36%。在有机温室番茄中施用流动性绿肥，无论是蚕豆鲜生物量还是苜蓿干颗粒，都显著增加了植物可利用的土壤氮，改善了氮营养，并提高了果实产量。然而，施用流动性绿肥后的氮矿化率在作物生长初期过高，随后显著下降。这可能会在作物生长后期造成氮缺乏。
