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DocumentSoil organic carbon and nutrient availability under Populus deltoides based agroforestry system in semi-arid region of North-West India
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.To achieve biological production on a sustainable basis through the addition of soil organic carbon (SOC) and check land degradation, Populus deltoides is a promising species recognized as an important tree component in agroforestry system (AFS) in the present changing climate. The soil is enriched through the addition of leaf litter in large quantities by this tree, which ultimately improves the fertility in terms of SOC, available N, P and K. However, scanty information is obtainable related to associations between soil properties and poplar based AFS. In this communication, the objective of this study to examine the effect of three old poplar based AFS on soil OC, available N, P and K. The site consisted of six different spacings: i.e. 3×3m, 4×3m, 5×3m, 6×3m, 7×3m and 8×3m of poplar were intercropped with winter wheat, and in adjacent agricultural control plot, where winter wheat was the sole crop (devoid of tree). We quantified soil properties such as soil SOC and available N, P and K at 0-15 cm depth and studied their spatial variability in relation to different spacings of poplar based AFS during 2018-2019. SOC accumulation rates increased with the decrease in tree spacing and were maximum (0.69%) under 3×3 m spacing. The available soil N, P and K increased significantly under different spacings of poplar based AFS in all the treatments from their initial values. The highest available soil N (233.5 kg ha –1 ), P (16.1 kg ha–1) and K (285.3 kg ha–1) were recorded under 3 × 3m spacing compared to 4×3m, 5×3m, 6×3m, 7×3m, 8×3m and sole cropping after harvesting of wheat crop. Keywords: Climate change, Adaptive and integrated management, Research, Agriculture, Deforestation and forest degradation ID: 3486112 -
Book (stand-alone)Agricultural Drainage Water Management in Arid and Semi-Arid Areas 2002
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No results found.This publication provides planners, decision-makers and engineers with guidelines to sustain irrigated agriculture and at the same time to protect water resources from the negative impacts of agricultural drainage water disposal. On the basis of case studies from Central Asia, Egypt, India, Pakistan and the United States of America, it distinguishes four broad groups of drainage water management: water conservation, drainage water reuse, drainage water disposal and drainage water treatment. All these options have certain potential impacts on the hydrology and water quality in an area, with interactions and trade-offs occurring when more than one is applied. This publication presents a framework to help make a selection from among the various drainage water management options and to evaluate their impact and contribution towards development goals. In addition, it presents technical background and guidelines on each of the options to enable improved assessment of their impacts and to fac ilitate the preparation of drainage water management plans and designs. -
Book (stand-alone)Agricultural Drainage Water Management in Arid and Semi-arid Areas
FAO Irrigation and Drainage Paper
2002Also available in:
No results found.This publication deals with the underlying concepts relating to drainage water management. It first discusses the adequate identification and definition of the problem for the selection and application of a combination of management options. It then presents technical considerations and details on the four groups of drainage management options. The second part of the publication contains the summaries of the case studies from the United States of America, Central Asia, Egypt, India and Pakista n. These case studies represent a cross-section of approaches to agricultural drainage water management. The factors affecting drainage water management include geomorphology, hydrology, climate conditions and the socio-economic and institutional environment.
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