Research in Herbosa Succession Process Based on Soil Fertility Evolution

Weed biodiversity is one of the indicators of farmland ecological environment and greatly affected by different fertilization patterns. This research program was to study weed community under different fertilization patterns in farmlands based on long term field experiments in Hubei, Anhui and Jiangxi provinces, and to explore evolution trend of weed community structure in the fields of rice, maize and wheat.

IPNI-2009-CHN-HB34

Ecological adaptation of plants is the mutual interaction result between the plants and their standing environment. It reflects not only adaptive ability and growth and development rule of plants, but also effects degree of environment to the plant community. In an agro-ecosystem, the soil condition changes that caused by long-term fertilization could bring about new pressure of natural selection for farmland weed. Read more


Year of initiation:2009
Year of completion:2015
Map:

Interpretive Summary

Weed biodiversity is one indicator of farmland ecology and it is greatly affected by fertilization practices. This research in Hubei and Jiangxi was aimed at studying the weed community under different fertilization patterns, and to investigate the evolution of weed community structure of late rice fields. The author studied the weed community structure and biodiversity within five long-term fertilization treatments for late rice by using the method of community ecology.

Fertilization can not only affect crop growth, but also impact selection pressures on weeds. Nutrient decisions can be regarded as an important component of an integrated weed management strategy. Previous studies have demonstrated that fertilization greatly affected weed species composition, abundance, density, and diversity. An understanding of the effect of nutrients on weed communities is important for making better management strategies for sustainable agricultural production.

Weeds compete with crops for abiotic factors affecting growth, and this competition can result in drastic declines in crop yield and quality. These factors also play an important role in nutrient cycling, soil preservation and other ecosystem functions. Fertilization can not only affect crop growth, but also impact selection pressures on weeds. Therefore fertilization is regarded as an important component of integrated weed management program.

Effect of Soil Fertility Evaluation on the Weed Succession Process, 2012 Weeds are one of the major constraints to crop production. However, as one of the primary producers within farming systems, weeds play an important role in the biological diversity of agro-ecosystems. We hypothesized that appropriate and suitable fertilization in the agro-ecosystems would not only maintain the biodiversity of weed communities but also provide desirable crop productivity.

Effect of Soil Fertility Evaluation on the Weed Succession Process, 2011 Ecological adaptation of plants is the result of mutual interaction between plants and their surrounding environment. It reflects not just the adaptive ability of plants, but also the effect of environment on the plant community. In agro-ecosystems, soil conditions tend to change under long-term fertilization that loads natural selection pressure on weeds.

Effect of Soil Fertility Evolution on the Weed Succession Process, 2009 The process of ecological adaptation of plants involves a mutual interaction between plants and their environment. In an agro-ecosystem, the changes caused by long-term fertilization can bring new selection pressures, particularly for weeds. These pressures affect the frequency of weed occurrence, weed community structure and diversity, and the soil weed seed bank.

↑ Show less ↑

Updates & Reports

2010

Project Description


Project Leader

Wan Kaiyuan, Chinese Academy of Sciences


Project Cooperators

Tao Yong, Wuhan Botanical Garden, CAS
Chen Shusen, Wuhan Botanical Garden, CAS
Pan Junfeng, Wuhan Botanical Garden, CAS


IPNI Staff

F. Chen


Location

Asia \ Eastern Asia \ CHN \ Hubei \ Wuhan


Topics

4r rate, 4r source, best management practices, environment

crabgrass

Carbon (C), Nitrogen (N), Phosphorus (P), Potassium (K)