International Journal of Chemical Studies
Vol. 5, Issue 6 (2017)
Soil treatments and rootstocks against apple replant problem
Author(s): Niranjan Singh and DP Sharma
Abstract: Apple orchards planted in late sixties in Himanchal Pradesh and North Western Himalayan region have shown symptoms of declining productivity as these plants have completed their economic life span. Due to limited land, choice of crops for different micro climatic niches and incomparable economic equivalence of other fruits with apple, orchardists are compelled to replant old apple orchard sites with apple only. There has been substantial increase in the proportion of declining orchards which need to be changed. Therefore, standardization of suitable agro-techniques to combat replant problem in apple for better field survival rate and productivity under replant conditions for sustainability of apple industry in the state. In present study there were 20 treatments comprising of four apple rootstocks i.e. Seedling, M.793, MM.111 and M.7 and five different soil management treatments i.e. control, soil fumigation, PGPR, biocontrol and combined (Soil fumigation + PGPR + Biocontrol) with three replications. The pooled data over the years 2015 and 2016 revealed that M.793 rootstock recorded significantly higher values of plant growth and vigour parameters, soil enzyme and biological activities. Among the treatments, highest growth and vigour parameters, soil enzymatic activities and microbial counts were recorded maximum in combined treatment. The interaction between rootstocks and treatments revealed that combinations of M.793 × combined treatment recorded maximum growth and vigour traits, enzymatic activities, bacterial counts, fungal counts and actinomycetes counts compared to other rootstocks and treatment combinations under replant situations.
Pages: 2164-2170 | 433 Views 15 Downloads
How to cite this article:
Niranjan Singh, DP Sharma. Soil treatments and rootstocks against apple replant problem. Int J Chem Stud 2017;5(6):2164-2170.