ABSTRACT

Intercropping medicinal plants with grain legumes provides an excellent opportunity for small-scale farmers to generate more income and move towards sustainable cropping systems. The effect of arbuscular mycorrhizal fungi (AMF) inoculation on yield, quality and nutrient uptake of isabgol and lentil, when grown as monocrops or in various intercropping ratios, were evaluated. Inoculation with AMF resulted in positive effects on AMF root colonisation, yield components and seed yields (significant for lentils only) of both crops, especially in the intercropping systems, as well as in the nutrient uptake in isabgol. The highest seed yields of isabgol (743 kg ha⁻¹) and lentil (684 kg ha⁻¹) were obtained when these species were grown as monocrops and inoculated with AMF. The highest mucilage content (20.9%) and swelling factor (16.9 ml) of the isabgol seeds were found when the two secies were grown in the intercropping ratio of 2I:2L (2 rows isabgol: 2 rows lentil) and treated with AMF. Regarding the composition of the isabgol seed mucilage, the highest concentrations of galacturonic acid (9.0%), galactose (11.8%), glucuronic acid (18.3%), and xylose (39.0%) were recorded in intercropping with AMF treatment. AMF inoculation also increased soil basic microbial respiration, soil substrate-induced respiration and soil microbial biomass carbon. Overall, the highest land equivalent ratio (LER = 1.67) was recorded in the 4I:2L intercropping pattern with AMF inoculation. The results indicated that intercropping of isabgol and lentil together with AMF inoculation was an effective system to increase the use efficiency of resources for smallholder farmers in semi-arid regions.

摘要

套种药用植物和豆类作物为小规模农民提供了绝佳的机会，以增加收入并迈向可持续的种植系统。评估了丛枝菌根真菌（AMF）种植单作作物或以不同的间作比例生长时，对伊莎糖和小扁豆的产量，品质和养分吸收的影响。接种AMF会对两种作物的AMF根部定植，产量成分和种子产量（仅对小扁豆有意义）产生积极影响，尤其是在间作系统中，以及对伊莎三醇的养分吸收方面。伊沙格尔（743 kg ha ^-1）和小扁豆（684 kg ha ^-1）的最高种子产量当这些物种作为单作作物生长并接种AMF时，获得）。当两段以2I：2L的间作比例（2行isabgol：2行小扁豆）生长并用AMF处理时，发现伊莎糖酚种子的最高粘液含量（20.9％）和溶胀因子（16.9 ml）。关于伊莎固酚种子粘液的组成，在通过AMF处理的间作中记录了最高浓度的半乳糖醛酸（9.0％），半乳糖（11.8％），葡萄糖醛酸（18.3％）和木糖（39.0％）。接种AMF还增加了土壤的基本微生物呼吸，土壤基质诱导的呼吸和土壤微生物生物量碳。总体而言，最高的土地当量比（LER = 1.67）记录在AIM接种的4I：2L间作模式中。