chapter  8
32 Pages

Climate Change and Its Impact on Productivity and Bioactive Health Compounds of Vegetable Crops

Abstract ..................................................................................................118 8.1 Introduction ...................................................................................119 8.2 Emission of Greenhouse Gases .................................................... 120 8.3 Impacts of Climate Change on Agriculture ................................. 120 8.4 Cultural Management ................................................................... 139 Keywords .............................................................................................. 145 References ............................................................................................. 145

PRITAM KALIA1 and R. K. YADAV

ABSTRACT

Vegetable crops are playing pivotal role in ensuring food, nutritional and livelihood security due to their high production per unit area and time besides high level of biologically active compounds that impart health benefits beyond basic nutrients. High intake of vegetables has been associated with a lesser incidence of degenerative diseases. With the increasing health consciousness among masses, demand for these crops is rising day by day. In order to enhance their suitability beyond fresh, efforts are going on to develop bioactive compound rich varieties in respective crops so as to harness their industrial potential. These compounds have also been reported to enhance storability and delays senescence. Abrupt rise and fall in temperature due to Climate change will definitely pose a threat to production and productivity of perishable vegetable crops besides disturbing their endogenous biochemical level and taste. The cool season vegetables are more sensitive to adverse weather than warm season. Abiotic stresses like extreme temperature (low/high), soil salinity and drought are detrimental for vegetable production. Thus, high temperatures and limited soil moisture are the major causes of low yields in vegetables. The different development phases like vegetative growth, flowering and fruit development are significantly influenced by climatic vagaries. The effects of the elevated temperature, unpredictable and irregular precipitation can disrupt the normal growth and development of plant that ultimately affect the crop productivity. It is projected that Crop yields will decline in Asia by 2.510% from 2020 onwards and by 5-30% after 2050. However, this decline is further expected to compound in South and Central Asia.