Kathbaruah Shiney, Bhattacharyya Badal, Borkataki Shimantini, Gogoi Bhabesh, Hatibarua Preeti, Gogoi Sailen, Bhairavi K Sindhura, Dutta Pranab
Assam Agricultural University, Jorhat, India.
CPGSAS, Central Agricultural University (Imphal), Umiam, India.
Front Microbiol. 2024 Jul 1;15:1387434. doi: 10.3389/fmicb.2024.1387434. eCollection 2024.
Termite mound soils are known to possess unique physico-chemical and biochemical properties, making them highly fertile. Considering their rich nutrient content, the objective of the current experiment is to assess the physico-chemical properties and enzyme activities of termite mound based potting media and evaluate theirperformance for further exploration in floriculture. Potting media consisting of termite mound soil (TS) of a subterranean termite, were prepared in 7 different combinations with garden soil (GS), sand (S) and farmyard manure (FYM) and a control (without termite mound soil), i.e., T (TS, GS, S, FYM (v:v:v:v /1:2:1:1)), T (TS, GS, S, FYM (v:v:v:v / 2:1:1:1)), T (TS, S, FYM (v:v:v / 2:1:1)), T (TS, GS, FYM (v:v:v / 2:1:1)), T (TS, GS, S (v:v:v / 2:1:1)), T (TS, S, FYM (v:v:v / 3:1:1)), T (TS, S, FYM (v:v:v / 1:1:2)) and control (GS, S, FYM (v:v:v / 2:1:1)). The samples were then analysed in laboratory. Experimental analysis on physico-chemical and biological parameters revealed superiority of T (TS, S, FYM (v:v:v / 1:1:2)) in terms of pH (7.15), organic carbon (2.13%), available nitrogen (526.02 kg ha), available phosphorus (56.60 kg ha), available potassium (708.19 kg ha), dehydrogenase activity (18.21 μg TTF g soil day), Phosphomonoesterase (PME) activity (46.68 54 μg p-nitrophenol/gsoil/h) and urease activity (3.39 μg NH-N g soil h). Whereas T (TS, GS, FYM (v:v:v /2:1:1)) registered superiority in terms of PME activity (50.54 μg p-nitrophenol/gsoil/h), Fluorescein diacetate (FDA) activity (11.01 μgfluorescein/gsoil/h) and Soil Microbial Biomass Carbon (SMBC) (262.25 μg/g). Subsequent to the laboratory analysis, two best potting mixtures (T & T) were selected and their performance was assessed by growing a test crop, cv. Inca Orange. Considering the growth parameters, the potting media: T was found to be significantly superior in terms of plant spread (39.64 cm), leaf area index (4.07), fresh weight (37.72 g), yield (317.81 g/plant), and diameter (9.38 cm) of flower over T & control. The Benefit:Cost (B:C) ratio meaning the ratio of net returns to total cost of cultivation was determined. The B:C ratio of raising marigold flower as potted plant in T was 1.10 whereas the B:C ratio of the potting mixture of T was 2.52. This shows that T potting media is also economically viable choice for commercial purposes.
已知白蚁丘土壤具有独特的物理化学和生化特性，使其肥力很高。考虑到其丰富的养分含量，当前实验的目的是评估基于白蚁丘的盆栽基质的物理化学性质和酶活性，并评估其在花卉栽培中进一步探索的性能。由地下白蚁的白蚁丘土壤（TS）与园土（GS）、沙子（S）和农家肥（FYM）按7种不同组合制备盆栽基质，并设一个对照（不含白蚁丘土壤），即T（TS、GS、S、FYM（体积比/1:2:1:1））、T（TS、GS、S、FYM（体积比/2:1:1:1））、T（TS、S、FYM（体积比/2:1:1））、T（TS、GS、FYM（体积比/2:1:1））、T（TS、GS、S（体积比/2:1:1））、T（TS、S、FYM（体积比/3:1:1））、T（TS、S、FYM（体积比/1:1:2））以及对照（GS、S、FYM（体积比/2:1:1））。然后将样品在实验室进行分析。对物理化学和生物学参数的实验分析表明，T（TS、S、FYM（体积比/1:1:2））在pH值（7.15）、有机碳（2.13%）、有效氮（526.02千克/公顷）、有效磷（56.60千克/公顷）、有效钾（708.19千克/公顷）、脱氢酶活性（18.21微克三苯基四氮唑氯化物/克土壤/天）、磷酸单酯酶（PME）活性（46.68 54微克对硝基苯酚/克土壤/小时）和脲酶活性（3.39微克铵态氮/克土壤/小时）方面表现优异。而T（TS、GS、FYM（体积比/2:1:1））在PME活性（50.54微克对硝基苯酚/克土壤/小时）、荧光素二乙酸酯（FDA）活性（11.01微克荧光素/克土壤/小时）和土壤微生物生物量碳（SMBC）（262.25微克/克）方面表现优异。实验室分析之后，选择了两种最佳盆栽混合物（T和T），并通过种植试验作物“印加橙”来评估其性能。考虑到生长参数，盆栽基质T在植株冠幅（39.64厘米）、叶面积指数（4.07）、鲜重（37.72克）、产量（317.81克/株）以及花朵直径（9.38厘米）方面显著优于T和对照。测定了效益成本（B:C）比，即净收益与总种植成本的比率。在T中作为盆栽植物种植万寿菊的B:C比为1.10，而T盆栽混合物的B:C比为2.52。这表明T盆栽基质在商业用途上也是经济可行的选择。
