ABSTRACT

Field experiments were conducted for two successive seasons July 2018 to November 2018 and July 2019 to November 2019 at the Fruit Instructional Farm, Department of Fruit Science, College of Horticulture and Forestry, Jhalawar district under Rajasthan state of India. The experiment consisted of different treatments of Azospirillum brasilense (AZS) and Vermicompost (V.C.). It was laid out in a Randomized Block Design with three replications. The 16 different treatment combinations of AZS and Vermicompost were applied to soil canopy of custard apple cv. Balanagar plants during first week of July 2018 and July 2019 in canopy rhizosphere of black vertisols in custard apple plants. Among different treatment combinations, T₁₀ treatment consisting of AZS @ 50 g + V.C. @10 kg/plant was found relatively better over all other treatments with respect to most of the plant growth characteristics, including soil health properties and microbial population density in soil availability in canopy of custard apple cv. Balanagar plants. The pooled results of two years revealed comparative better plant growth parameters viz. rootstock girth (74.20 mm), scion girth (61.52 mm), plant height attribute (3.46 m), number of nodes per shoot (13.00), number of nodes per branch (86.17), number of shoots per branch (26.00), number of shoots per plant (151.00) have shown augmenting response in improvement of plant growth parameters under T₁₀ treatment (AZS @ 50 g + V.C. @ 10 kg /plant) in custard apple cv. Balanagar plants. However, key soil parameters concerning bulk density (1.32 g/cm³), soil pH (7.39), and electrical conductivity (0.46 dS m⁻¹) reduced significantly under T₁₀ treatment over other treatments. The soil physico-chemical properties especially change in porosity (55.04%), organic carbon (0.55%), available nitrogen content (350.55 kg/ha), available phosphorous content (46.51 kg ha⁻¹) and available potassium content (322.34 kg ha⁻¹), bacterial population (26.67 cfu g⁻¹), fungi population (15.00 cfu g⁻¹) and actinomycetes population (10.00 cfu g⁻¹) have shown tremendous response in improvement of soil parameters under T₁₀ treatment (AZS @ 50 g + V.C. @ 10 kg /plant) with respect to overall soil health.

摘要

田间试验于 2018 年 7 月至 2018 年 11 月和 2019 年 7 月至 2019 年 11 月在印度拉贾斯坦邦贾拉瓦尔区园艺与林业学院水果科学系水果教学农场连续两个季节进行。实验由巴西固螺菌（AZS）和蚯蚓粪（VC）的不同处理组成。它以具有三个重复的随机区组设计布局。将 AZS 和 Vermicompost 的 16 种不同处理组合应用于奶油苹果品种的土壤冠层。Balanagar 植物在 2018 年 7 月和 2019 年 7 月的第一周在奶油苹果植物中的黑色叶绿素的冠层根际。在不同的治疗组合中，T ₁₀发现由 AZS @ 50 g + VC @10 kg/植物组成的处理在大多数植物生长特征方面比所有其他处理相对更好，包括土壤健康特性和在奶油苹果树冠中土壤可用性的微生物种群密度。巴拉那加植物。两年的汇总结果显示相对较好的植物生长参数，即。砧木周长（74.20 mm），接穗周长（61.52 mm），株高属性（3.46 m），每芽节数（13.00），每枝节数（86.17），每枝芽数（26.00），数量每株植物的芽数 (151.00) 在 T ₁₀下对改善植物生长参数的反应增强在奶油苹果 cv. 中处理（AZS @ 50 g + VC @ 10 kg / 植物）。巴拉那加植物。然而，与其他处理相比，在 T ₁₀处理下，关于容重 (1.32 g/cm ³ )、土壤 pH (7.39) 和电导率 (0.46 dS m ^-1 ) 的关键土壤参数显着降低。土壤理化性质特别是孔隙度 (55.04%)、有机碳 (0.55%)、有效氮含量 (350.55 kg/ha)、有效磷含量 (46.51 kg ha ^-1 ) 和有效钾含量 (322.34 kg ha) 发生变化^-1 )、细菌种群 (26.67 cfu g ^-1 )、真菌种群 (15.00 cfu g ^-1 ) 和放线菌种群 (10.00 cfu g ^{-1 )}) 在 T ₁₀处理下 (AZS @ 50 g + VC @ 10 kg / 植物)的土壤参数改善方面对整体土壤健康表现出巨大的响应。