Thinking of herbicide free weed management in conservation agriculture. The main purpose of residue retention under conservation agriculture is not only erosion reduction, weed suppression too. Can anyone share their views on the subject
Conservation agriculture is a set of soil management practices that minimize the disruption of the soil's structure, composition and natural biological diversity. Weeds in conservation agriculture can be controlled by adopting cultural and mechanical methods of weed control. Please check the following links for information on herbicide free conservation agriculture.
https://www.researchgate.net/post/How_do_you_control_weeds_in_conservation_agriculture_without_using_herbicides
https://croplife.org/case-study/importance-of-herbicides-for-conservation-agriculture-in-sub-saharan-africa/
Studies on physico chemical characteristics of different cultivars of litchi under west bengal region
There are alternative ways or practices for weed management without using herbicide. If correctly applied, these practices allow a sustainable use of herbicides in an integrated weed management programme and even completely non-chemical weed control is possible. so for known these practices please read enclosed file.
Thank You
regards
Nimit Kumar
Dear adyant,
I understand there are number of allelopathic plant species for weed suppression. We need a sustainable practice in CA. The practice should go hand in hand with the prevalent cropping system. We cant recommend farmer to bring something from outside. From my understanding if proper residue is maintained, weed may be managed.
Following the concept of ecosystem immunity could be a better solution for tropical agriculture in mountain areas since such landscapes are also blessed with higher native biodiversity.
This may be one of the best solutions for herbicide free integrated weed management.
Below references could be useful to you in this regard. # Weed Management in the Commercial Tea Industry: The Case of Hapugastenne Estate, Maskeliya # Diversity and Behaviour of the Naturally Regenerated ... http://114.242.223.200 › auto › detail # HERBICIDES FREE INTEGRATED WEED MANAGEMENT https://aslm.lk › 2018/08/15 › herbicidesfree-weedmana... # Ecosystem immunity: A climate smart solution to manage weeds in commercial tea.
Yes, because it drains the seeds on the surface of the soil and does not show storage on the surface of the soil until it loses its vitality
Conservation agriculture (CA) allows farmers to reduce costs and enhance soil health, but tends to increase weed infestation and associated crop yield loss, and/or herbicide use. Herbicide treatment frequency index (HTFI) averaged over rotation increased when tillage frequency decreased. Adoption of CA changes weed dynamics and communities and therefore necessitates adjusting weed control methods. No-till systems accumulate seeds near the soil surface where they are more likely to germinate but are also exposed to greater mortality risks through weather variability and predation. Assuming no seed input into the system, germinable seed banks under no-till decrease more rapidly than under conventional tillage. Reducing tillage may shift weed communities from annual dicots to grassy annuals and perennials. Surface residues lower average soil temperatures and may delay emergence of both crops and weeds. Germination and growth of small-seeded annuals will suffer from restricted light availability, physical growth barriers and potential allelopathic effects from surface residue.
Chemical herbicides cause more harm than good, it is well known.
Generally synthetic herbicides are designed to destroy living cells/block biological processes and kill plants. However, in addition to the intended task, herbicides do inactivate/suppress soil biological activity also ceasing/hindering the natural flow of Carbon, Nitrogen, Phosphorus and many other nutrient cycles, inhibiting the autonomous circulation of nutrients through soil and biological systems. Thus, understanding the concept of "Ecosystem Immunity" and apply same to control weeds and other pest species is a practically proven very effective and promising way in agriculture. Promoting ecosystem immunity based weed control methods such as Herbicid-free Integrated Weed Management (HFIWM) also improve the soil texture, structure, soil carbon and nutrient levels rapidly, establishing Climate Smart Agriculture Systems, reducing the cost of farm operations as well.
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