Soil nutrients and enzyme activities based on millet continuous cropping obstacles

Area of Science:

• Agricultural Science
• Soil Science
• Agronomy

Background:

• Continuous cropping of a single crop, such as millet, can negatively impact soil health over time.
• Understanding these impacts is crucial for sustainable agricultural practices.

Purpose of the Study:

• To evaluate the effects of continuous millet cropping on soil nutrients, enzyme activities, and crop yield.
• To compare continuous cropping with rotational cropping systems.

Main Methods:

• Field experiment with four treatments: 2, 3, and 4 years of continuous millet cropping, and a control of rotational cropping.
• Analysis of soil nutrients (nitrogen, phosphorus, potassium), soil pH, soil enzyme activities (urease, alkaline phosphatase, sucrase, catalase), and millet yield.

Main Results:

• Millet yield significantly decreased with increased years of continuous cropping, showing a 37.60% reduction after 4 years compared to rotational cropping.
• Continuous cropping led to reduced soil nitrogen and phosphorus, increased soil pH, and a general decline in soil enzyme activities.
• Enzyme activity decline was more pronounced with longer periods of continuous cropping.

Conclusions:

• Continuous millet cropping degrades soil fertility and reduces yield.
• Implementing crop rotation with legumes and applying fertilizers are recommended strategies to improve soil health and millet productivity.