Effect of tree rhizosphere properties on growth  of citrus (Citrus spp.) rootstocks

Pooja P  Deotale; Ommala D  Kuchanwar; R B Ghagare; Saroj Deshmukh; A S  Mailappa

doi:10.48165/

Authors

Pooja P Deotale Department of Soil Science and Agricultural Chemistry, College of Agriculture, Dr Panjabrao Krishi Vidyalaya, Nagpur 440 010, Maharashtra
Ommala D Kuchanwar Department of Soil Science and Agricultural Chemistry, College of Agriculture, Dr Panjabrao Krishi Vidyalaya, Nagpur 440 010, Maharashtra
R B Ghagare Department of Soil Science and Agricultural Chemistry, College of Agriculture, Dr Panjabrao Krishi Vidyalaya, Nagpur 440 010, Maharashtra
Saroj Deshmukh ICAR-Central Citrus Research Institute, Nagpur 440 033
A S Mailappa Department of Soil Science and Agricultural Chemistry, College of Horticulture and Forestry, Pashighat 791 102

DOI:

https://doi.org/10.48165/

Keywords:

Nutrient status, Soil properties, Rootstock growth, Rhizosphere soil, Phosphorus Olsen-P, Bacterial colonies

Abstract

The experiment was conducted to find out the effect of rhizosphre of different tree species on germination and growth of rough lemon and Rangpur lime rootstocks at Dr Panjabrao Krishi Vidyalaya, Nagpur, during 2014- 15. The rhizosphere properties of different trees showed maximum organic carbon in rhizosphere soil of banyan tree (Ficus benghalensis L.) soil (0.90%), while CaCO3 was maximum in mango (Mangifera indica L.) tree rhizosphere soil. The KMnO4-N (254.0 kg/ha), NH4OAc (369.6 kg/ha) and CaCl2-S (9.6 kg/ha) were found maximum in Nagpur mandarin tree rhizosphere soil. The available phosphorus Olsen-P was found maximum in banyan tree rhizosphere soil (15.3 kg/ha), in addition to NH4OAc -Ca and NH4OAc -Mg. The maximum bacterial colonies (42.4×10³ cfu/g) were observed in Nagpur mandarin (Citrus reticulate Blanco) tree rhizosphere soil. Fungal colonies on other hand, were found maximum in banyan tree rhizosphere soil (26.6×10³ cfu/g). The germination of rough lemon and Rangpur lime seeds was maximum in Nagpur mandarin rhizosphere soil than in bulk field soil. The growth parameters like plant height (3.90 cm) and number of leaves/seedling (2.00) were maximum in Nagpur mandarin tree rhizosphere soil due to presence of native homologous microorganisms in Nagpur mandarin tree rhizosphere soil.