1 / 1

Sustainable Crop Production in Vertic Inceptisols System priorities 4A, 4C, 4D, 3A

Sustainable Crop Production in Vertic Inceptisols System priorities 4A, 4C, 4D, 3A. BW 7 Watershed at ICRISAT, Patancheru. Runoff and soil erosion. Introduction.

larissa
Télécharger la présentation

Sustainable Crop Production in Vertic Inceptisols System priorities 4A, 4C, 4D, 3A

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Sustainable Crop Production in Vertic Inceptisols System priorities 4A, 4C, 4D, 3A BW 7 Watershed at ICRISAT, Patancheru Runoff and soil erosion Introduction Improved management decreased surface runoff by 29%, soil loss by 47%, and nitrogen loss by 43% as compared to the traditional management Vertic Inceptisols occupy about 51 million ha in India, which are prone to land degradation. Soybean-based cropping systems are dominant with productivity below 1.0 t ha-1. Mean surface runoff, soil erosion and loss of nitrates with management practices (1995-2006) Distribution of black soils and soybean in India Treatments a) Land Management Systems 1. Improved system ‒ Broadbed and furrow system (BBF); Glyricidia on graded bunds + composted crop residue 2. Traditional system ‒ Sowing on flat with graded bunds b) Cropping Systems Changes in soil organic carbon (OC) and other nutrients Improved management retained 2 t ha-1 more OC than the traditional system; and SB/PP retained 2.4 to 6.4 t ha-1 more OC in the soil as compared to SB-CP. Soil organic carbon status in 2002 under cropping systems Soil organic carbon status in 1995 and 2002 in land management treatments Major constraints to crop production • Land degradation caused by high runoff and soil erosion, water logging, depletion of soil nutrients, organic matter and soil biota • Inappropriate land, water and crop management practices • Low cropping intensity Results Grain yield of cropping systems • Improved management system increased productivity by 7-21% over traditional system • Productivity of SB-CP and SB/PP was increased to 2.7 and 2.1 t ha-1,respectively • Productivity of legume-legume system decreased over years • Productivity of maize-safflower increased to 6.9 t ha-1 Total nitrogen, Olsen’s P, zinc, sulphur and boron contents of soil in 2002 The Approach • Enhance water use efficiency • Diversify systems with high-value crops (Vegetables & fruit trees) Conclusions Total grain yield of MZ-SF and SB/PP systems during 2004-06 BW 7 Watershed: Objectives Total grain yield of SB-CP and SB/PP systems during 1995-97 and 2001-03 • Catchment management and holistic IGNRM approach increased productivity of soybean-based systems up to 2.7 t ha-1, reduced runoff by 29%, soil loss by 47% and NO3-N loss by 43% as compared to farmers’ practice • Pigeonpea-based systems minimized soil C depletion and could help building soil C stocks in Vertic Inceptisols • Rainwater use efficiency substantially improved with improved management and through conjunctive use of groundwater. • Increase productivity of soybean-based cropping systems through adoption of improved soil, water, nutrient and crop management practices • Evaluate long-term effects of improved vs. traditional management on productivity of crops, natural resources and environment International Crops Research Institute for the Semi-arid Tropics, Patancheru, Andhra Pradesh, India

More Related